Integrated Taxonomic Information System - Taxon Author Search Results


Source: Reptile Database (2017), website (version 24-Dec-16)

ITIS records citing this source
 
 Kingdom Animalia
  Ablabes bistrigatus Günther, 1868 -- invalid
  Ablabes chinensis Günther, 1889 -- invalid
  Ablabes decemlineatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Ablabes decipiens Günther, 1893 -- invalid
  Ablabes gracilis Günther, 1872 -- invalid
  Ablabes hamptoni Boulenger, 1900 -- invalid
  Ablabes herminae Boettger, 1895 -- invalid
  Ablabes hildebrandtii Peters, 1878 -- invalid
  Ablabes longicaudus Peters, 1871 -- invalid
  Ablabes modestus semimaculata Boettger, 1876 -- invalid
  Ablabes multicinctus Roux, 1907 -- invalid
  Ablabes nicobariensis Stoliczka, 1870 -- invalid
  Ablabes olivaceus Beddome, 1863 -- invalid
  Ablabes periops Günther, 1872 -- invalid
  Ablabes periops praefrontalis Mocquard, 1890 -- invalid
  Ablabes philippinus Boettger, 1897 -- invalid
  Ablabes rappii Günther, 1860 -- invalid
  Ablabes rhodogaster mayottensis Peters, 1874 -- invalid
  Ablabes scriptus Theobald, 1868 -- invalid
  Ablabes stoliczkae Sclater, 1891 -- invalid
  Ablabophis whytei leleupi Laurent, 1950 -- invalid
  Acalyptus peronii A. M. C. Duméril, 1853 -- invalid
  Acanthocercus Fitzinger, 1843 -- valid -- Anderson's Rock Agama
  Acanthocercus adramitanus (Anderson, 1896) -- valid -- Anderson's Rock Agama
  Acanthocercus annectens (Blanford, 1879) -- valid -- Eritrean Rock Agama, Eritrean Ridgeback Agama
  Acanthocercus atricollis (A. Smith, 1849) -- valid -- Black-necked Agama, Southern Tree Agama, Blue-throated Agama, Ridgeback Agama
  Acanthocercus atricollis atricollis (A. Smith, 1849) -- valid -- Blue-throated Agama
  Acanthocercus atricollis gregorii (Klausewitz, 1957) -- valid -- Blue-throated Agama
  Acanthocercus atricollis kiwuensis (Klausewitz, 1957) -- valid -- Blue-throated Agama
  Acanthocercus atricollis loveridgei (Klausewitz, 1957) -- valid -- Blue-throated Agama
  Acanthocercus atricollis minutus (Klausewitz, 1957) -- valid -- Blue-throated Agama
  Acanthocercus atricollis ugandaensis (Klausewitz, 1957) -- valid -- Blue-throated Agama
  Acanthocercus branchi Wagner, Greenbaum and Bauer, 2012 -- valid -- Branch's Agama
  Acanthocercus cyanogaster (Rüppell, 1895) -- valid -- Blue-bellied Ridgeback Agama, Black-necked Tree Agama
  Acanthocercus guentherpetersi Largen and Spawls, 2006 -- valid -- Peter's Ridgeback Agama
  Acanthocercus phillipsii (Boulenger, 1895) -- valid -- Philipps' Ridgeback Agama
  Acanthocercus yemensis (Klausewitz, 1957) -- valid
  Acanthophis antarcticus (Shaw and Nodder, 1802) -- valid -- Common Death Adder
  Acanthophis antarcticus antarcticus (Shaw and Nodder, 1802) -- valid
  Acanthophis antarcticus rugosus Loveridge, 1948 -- invalid
  Acanthophis antarcticus schistos Wells and Wellington, 1985 -- valid
  Acanthophis cryptamydros Maddodk, Ellis, Doughty, A. Smith and Wüster, 2015 -- valid -- Kimberley Death Adder
  Acanthophis hawkei Wells and Wellington, 1985 -- valid
  Acanthophis laevis Macleay, 1878 -- valid
  Acanthophis praelongus Ramsay, 1877 -- valid -- Northern Death Adder
  Acanthophis pyrrhus Boulenger, 1898 -- valid -- Desert Death Adder
  Acanthophis rugosus Loveridge, 1948 -- valid
  Acanthophis wellsi Hoser, 1998 -- valid
  Acanthophis wellsi donnellani Hoser, 2002 -- valid
  Acanthophis wellsi wellsi Hoser, 1998 -- valid
  Acanthosaura Gray in Hardwicke, 1827 -- valid
  Acanthosaura armata (Gray in Hardwicke, 1827) -- valid -- Armored Pricklenape, Peninsular Horned Tree Lizard
  Acanthosaura bintangensis Wood, L. L. Grismer, J. L. Grismer, Ahmad, Onn and Bauer, 2009 -- valid -- Bukit Larut Mountain Horned Agamid, Bintang Horned Tree Lizard
  Acanthosaura brachypoda Ananjeva, Orlov, Nguyen and Ryabov, 2011 -- valid
  Acanthosaura capra Günther, 1861 -- valid -- Green Pricklenape
  Acanthosaura cardamomensis Wood, L. L. Grismer, J. L. Grismer, Neang, Chav and Holden, 2010 -- valid
  Acanthosaura coronata Günther, 1861 -- valid
  Acanthosaura crucigera Boulenger, 1885 -- valid -- Masked Horned Tree Lizard, Boulenger's Pricklenape
  Acanthosaura lepidogaster (Cuvier, 1829) -- valid -- Brown Pricklenape
  Acanthosaura nataliae Orlov, Truong and Sang, 2006 -- valid -- Natalia's Agama
  Acanthosaura phuketensis Pauwels, Sumontha, Kunya, Nitikul, Samphanthamit, Wood and L. L. Grismer, 2015 -- valid -- Phuket Horned Tree Agamid
  Acanthosaura titiwangsaensis Wood, L. L. Grismer, J. L. Grismer, Ahmad, Onn and Bauer, 2009 -- valid -- Malayan Mountain Horned Agamid, Titiwangsa Horned Tree Lizard
  Achalinopsis jinggangensis Zong and Ma, 1983 -- invalid
  Achalinus ater Bourret, 1937 -- valid -- Bourret's Odd-scaled Snake
  Achalinus formosanus Boulenger, 1908 -- valid -- Formosa Odd-scaled Snake
  Achalinus formosanus chigirai Ota and Toyama, 1989 -- valid
  Achalinus formosanus formosanus Boulenger, 1908 -- valid
  Achalinus hainanus Huang, 1975 -- valid -- Hainan Odd-scaled Snake
  Achalinus jinggangensis (Zong and Ma, 1983) -- valid -- Zong's Odd-scaled Snake
  Achalinus meiguensis Hu and Zhao, 1966 -- valid -- Szechwan Odd-scaled Snake
  Achalinus niger Maki, 1931 -- valid -- Black Odd-scaled Snake
  Achalinus rufescens Boulenger, 1888 -- valid -- Boulenger's Odd-scaled Snake
  Achalinus spinalis Peters, 1869 -- valid -- Peters' Odd-scaled Snake, Japanese Odd-scaled Snake
  Achalinus werneri Van Denburgh, 1912 -- valid -- Amami Odd-scaled Snake
  Acontiophis paradoxa Günther, 1875 -- invalid
  Acridophaga renardi eriwanensis Reuss, 1933 -- invalid
  Adelophis Dugès, 1879 -- valid
  Adelophis copei Dugès, 1879 -- valid -- Culebra-de vega de Cope, Cope's Mountain Meadow Snake
  Adelophis foxi Rossman and Blaney, 1968 -- valid -- Culebra-de vega de Fox, Fox's Mountain Meadow Snake
  Adelphicos daryi Campbell and Ford, 1982 -- valid -- Dary's Burrowing Snake
  Adelphicos eraepacis latifasciatus Lynch and H. M. Smith, 1966 -- invalid
  Adelphicos ibarrorum Campbell and Brodie, 1988 -- valid
  Adelphicos latifasciatum Lynch and H. M. Smith, 1966 -- valid -- Oaxacan Burrowing Snake
  Adelphicos newmanorum Taylor, 1950 -- valid
  Adelphicos nigrilatum H. M. Smith, 1942 -- valid -- Burrowing Snake
  Adelphicos quadrivirgatum Jan, 1862 -- valid -- Middle American Burrowing Snake
  Adelphicos quadrivirgatum newmanorum Taylor, 1950 -- invalid
  Adelphicos quadrivirgatum sargii (Fischer, 1885) -- invalid
  Adelphicos quadrivirgatum visoninus (Cope, 1866) -- invalid
  Adelphicos sargii (Fischer, 1885) -- valid -- Sargi's Earth Snake
  Adelphicos veraepacis Stuart, 1941 -- valid -- Stuart's Burrowing Snake
  Adelphicos visoninum (Cope, 1866) -- valid -- Middle American Burrowing Snake
  Aeluroglena cucullata Boulenger, 1898 -- valid -- Somali Snake
  Afronatrix Rossman and Eberle, 1977 -- valid
  Afronatrix anoscopus (Cope, 1861) -- valid -- African Brown Water Snake
  Agama aculeata Merrem, 1820 -- valid -- Ground Agama
  Agama aculeata aculeata Merrem, 1820 -- valid -- Ground Agama
  Agama aculeata distanti Boulenger, 1902 -- valid -- Ground Agama
  Agama africana (Hallowell, 1844) -- valid
  Agama agama (Linnaeus, 1758) -- valid -- Red-headed Agama, Common Agama, Rainbow Lizard
  Agama anchietae Bocage, 1896 -- valid -- Anchieta's Agama, Western Rock Agama
  Agama armata W. C. H. Peters, 1855 -- valid -- Peter's Ground Agama
  Agama atra Daudin, 1802 -- valid -- Southern Rock Agama
  Agama bocourti Rochebrune, 1884 -- valid -- Bocourt's Agama
  Agama boensis Monard, 1940 -- valid
  Agama bottegi Boulenger, 1897 -- valid -- Somali Agama
  Agama boueti Chabanaud, 1917 -- valid -- Mali Agama
  Agama boulengeri Lataste, 1886 -- valid -- Boulenger's Agama
  Agama caudospinosa Meek, 1910 -- valid -- Elmenteita Rock Agama
  Agama caudospinosa caudospinosa Meek, 1910 -- valid -- Insular Agama
  Agama caudospinosa spawlsi Wagner, 2010 -- valid -- Elmenteita Rock Agama
  Agama cristata Mocquard, 1905 -- valid -- Insular Agama
  Agama doriae Boulenger, 1885 -- valid -- Doria's Agama, Benoue Agama, Nigeria Agama
  Agama doriae benueensis Monard, 1951 -- valid
  Agama doriae doriae Boulenger, 1885 -- valid
  Agama etoshae Mclachlan, 1981 -- valid
  Agama finchi Böhme, Wagner, Malonza, Lötters and G. Köhler, 2005 -- valid -- Finch's Agama
  Agama finchi finchi Böhme, Wagner, Malonza, Lötters and G. Köhler, 2005 -- valid
  Agama finchi leucerythrolaema Wagner, Freund, Modrý, Schmitz and Böhme, 2011 -- valid
  Agama gracilimembris Chabanaud, 1918 -- valid -- Benin Agama
  Agama hartmanni W. C. H. Peters, 1869 -- valid -- Hartmann's Agama
  Agama hispida (Kaup, 1827) -- valid -- Common Spiny Agama, Southern Spiny Agama
  Agama hispida hispida (Kaup, 1827) -- valid -- Common Spiny Agama
  Agama hispida makarikarika FitzSimons, 1932 -- valid
  Agama hulbertorum Wagner, 2014 -- valid
  Agama impalearis Boettger, 1874 -- valid
  Agama insularis Chabanaud, 1918 -- valid -- Insular Agama
  Agama kaimosae Loveridge, 1935 -- valid
  Agama kirkii Boulenger, 1885 -- valid -- Kirk's Rock Agama
  Agama kirkii fitzsimonsi Loveridge, 1950 -- valid
  Agama kirkii kirkii Boulenger, 1885 -- valid
  Agama knobeli Boulenger and Power, 1921 -- valid -- Southern Rock Agama
  Agama lanzai Wagner, Leaché, Mazuch and Böhme, 2013 -- valid
  Agama lebretoni Wagner, Barej and Schmitz, 2009 -- valid
  Agama lionotus Boulenger, 1896 -- valid
  Agama lionotus dodomae Loveridge, 1923 -- valid
  Agama lionotus elgonis Lönnberg, 1922 -- valid
  Agama lionotus lionotus Boulenger, 1896 -- valid
  Agama lionotus ufipae Loveridge, 1932 -- valid
  Agama lucyae Wagner and Bauer, 2011 -- valid
  Agama montana Barbour and Loveridge, 1928 -- valid -- Montane Rock Agama
  Agama mossambica W. C. H. Peters, 1854 -- valid -- Mozambique Agama
  Agama mucosoensis Hellmich, 1957 -- valid -- Mucoso Agama
  Agama mwanzae Loveridge, 1923 -- valid -- Mwanza Flat-headed Agama
  Agama parafricana S. Trape, Mediannikov and J-F. Trape in Mediannikov, S. Trape and J-F. Trape, 2012 -- valid
  Agama paragama Grandison, 1968 -- valid -- False Agama
  Agama persimilis Parker, 1942 -- valid -- Painted Agama
  Agama planiceps W. C. H. Peters, 1862 -- valid -- Namib Rock Agama
  Agama robecchii Boulenger, 1891 -- valid -- Robecchi's Agama
  Agama rueppelli Vaillant in Révoil, 1882 -- valid -- Rüppell's Agama
  Agama rueppelli occidentalis Parker, 1932 -- valid
  Agama rueppelli rueppelli Vaillant in Révoil, 1882 -- valid
  Agama rueppelli septentrionalis Parker, 1932 -- valid
  Agama sankaranica Chabanaud, 1918 -- valid -- Senegal Agama
  Agama somalica Wagner, Leaché, Mazuch and Böhme, 2013 -- valid
  Agama spinosa Gray, 1831 -- valid -- Gray's Agama, Spiny Agama
  Agama sylvana MacDonald, 1981 -- valid
  Agama tassiliensis Geniez, Padial and Crochet, 2011 -- valid
  Agama turuensis Loveridge, 1932 -- valid
  Agama weidholzi Wettstein, 1932 -- valid -- Gambia Agama
  Agaminae -- valid
  Agkistrodon bilineatus Günther, 1863 -- valid -- Cantil enjaquimado, Mexican Moccasin
  Agkistrodon bilineatus howardgloydi Conant, 1984 -- invalid
  Agkistrodon blomhoffii brevicaudus Stejneger, 1907 -- invalid
  Agkistrodon blomhoffii dubitatus Gloyd, 1977 -- invalid
  Agkistrodon blomhoffii siniticus Gloyd, 1977 -- invalid
  Agkistrodon browni Shreve, 1938 -- invalid
  Agkistrodon contortrix (Linnaeus, 1766) -- valid -- Copperhead, Cantil cobrizo, Eastern Copperhead
  Agkistrodon contortrix contortrix (Linnaeus, 1766) -- valid -- Southern Copperhead
  Agkistrodon contortrix laticinctus Gloyd and Conant, 1934 -- invalid -- Broad-banded Copperhead
  Agkistrodon contortrix mokasen Palisot de Beauvois, 1799 -- valid -- Northern Copperhead
  Agkistrodon contortrix phaeogaster Gloyd, 1969 -- valid -- Osage Copperhead
  Agkistrodon contortrix pictigaster Gloyd and Conant, 1943 -- valid -- Trans-Pecos Copperhead
  Agkistrodon halys cognatus Gloyd, 1977 -- invalid
  Agkistrodon halys mogoi Bour, 1993 -- invalid
  Agkistrodon howardgloydi Conant, 1984 -- valid -- Gloyd's Moccasin
  Agkistrodon mokasen Palisot de Beauvois, 1799 -- invalid
  Agkistrodon piscivorus (Lacépède, 1789) -- valid -- Cottonmouth, Northern Cottonmouth
  Agkistrodon piscivorus conanti Gloyd, 1969 -- invalid -- Florida Cottonmouth
  Agkistrodon piscivorus leucostoma (Troost, 1836) -- valid -- Western Cottonmouth
  Agkistrodon piscivorus piscivorus (Lacépède, 1789) -- valid -- Eastern Cottonmouth, Northern Cottonmouth
  Agkistrodon russeolus Gloyd, 1972 -- valid -- Mexican Moccasin, Cantil
  Agkistrodon shedaoensis Zhao, 1979 -- invalid
  Agkistrodon taylori Burger and Robertson, 1951 -- valid -- Mexican Moccasin
  Agkistrodon tsushimaensis Isogawa, Moriya and Mitsui, 1994 -- invalid
  Agrophis sarasinorum Müller, 1895 -- invalid
  Agrophis saravacensis Shelford, 1901 -- invalid
  Ahaetulla caudolineata Gray, 1834 -- invalid
  Ahaetulla diplotropis Günther, 1872 -- invalid
  Ahaetulla dispar (Günther, 1864) -- valid -- Indian Bronzeback, Günther's Vine Snake
  Ahaetulla fasciolata (Fischer, 1885) -- valid -- Spotted Whipsnake, Speckle-headed Whipsnake
  Ahaetulla frenata Günther, 1865 -- invalid
  Ahaetulla fronticincta (Günther, 1858) -- valid -- Günther's Whipsnake, Burmese Vine Snake
  Ahaetulla heterolepidota Günther, 1863 -- invalid
  Ahaetulla hoplogaster Günther, 1863 -- invalid
  Ahaetulla modesta Günther, 1872 -- invalid
  Ahaetulla mycterizans (Linnaeus, 1758) -- valid -- Malayan Whipsnake
  Ahaetulla nasuta (Lacépède, 1789) -- valid -- Long-nosed Tree Snake, Green Vine Snake, Long-nosed Whip Snake
  Ahaetulla nigromarginata Günther, 1866 -- invalid
  Ahaetulla nitida Günther, 1863 -- invalid
  Ahaetulla occidentalis Günther, 1859 -- invalid
  Ahaetulla oliveri Taylor, 1950 -- invalid
  Ahaetulla perroteti (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Western Ghats Bronzeback
  Ahaetulla polylepis Peters, 1867 -- invalid
  Ahaetulla prasina (F. Boie, 1827) -- valid -- Gunther's Whip Snake, Jade Vine Snake, Oriental Whipsnake, Asian Vine Snake
  Ahaetulla prasina medioxima Lazell, 2002 -- valid
  Ahaetulla prasina prasina (F. Boie, 1827) -- valid
  Ahaetulla prasina preocularis (Taylor, 1922) -- valid
  Ahaetulla prasina suluensis Gaulke, 1994 -- valid
  Ahaetulla pulverulenta (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Brown-speckled Whipsnake
  Aipysurus apraefrontalis M. A. Smith, 1926 -- valid -- Short-nosed Seasnake, Sahul Reef Snake
  Aipysurus duboisii Bavay, 1869 -- valid -- Reef Shallows Seasnake
  Aipysurus eydouxii (Gray, 1849) -- valid -- Spine-tailed Seasnake
  Aipysurus foliosquama M. A. Smith, 1926 -- valid -- Leaf-scaled Seasnake
  Aipysurus fuscus (Tschudi, 1837) -- valid -- Dusky Seasnake, Timor Reef Snake
  Aipysurus laevis Lacépède, 1804 -- valid -- Olive-brown Seasnake
  Aipysurus laevis pooleorum L. A. Smith, 1974 -- invalid
  Aipysurus mosaicus Sanders, Rasmussen, Elmburg, Mumpuni, Guinea, Blias, Lee and Fry, 2012 -- valid
  Aipysurus pooleorum L. A. Smith, 1974 -- valid -- Shark Bay Seasnake
  Aipysurus tenuis Lönnberg and Andersson, 1913 -- valid -- Arafura Sea Snake
  Alecto bitorquata Jan, 1859 -- invalid
  Alecto labialis Jan, 1859 -- invalid
  Alecto rhodogaster Jan in Jan and Sordelli, 1873 -- invalid
  Alecto signata Jan, 1859 -- invalid
  Alleidophis worontzowi Prado, 1940 -- invalid
  Alluaudina bellyi Mocquard, 1894 -- valid
  Alluaudina mocquardi Angel, 1939 -- valid
  Alopecion fasciatum Günther, 1858 -- invalid
  Alopecion nigromaculatus Peters, 1863 -- invalid
  Alsophis angulifer caymanus Garman, 1887 -- invalid
  Alsophis angulifer ruttyi Grant, 1941 -- invalid
  Alsophis antiguae Parker, 1933 -- valid -- Antiguan Racer
  Alsophis antiguae sajdaki Henderson, 1990 -- invalid
  Alsophis antillensis (Schlegel, 1837) -- valid -- Antilles Racer, Leeward Racer
  Alsophis brooksi Barbour, 1914 -- invalid
  Alsophis bruesi Barbour, 1914 -- invalid
  Alsophis cantherigerus pepei Schwartz and Thomas, 1970 -- invalid
  Alsophis cantherigerus schwartzi Lando and Williams, 1969 -- invalid
  Alsophis danforthi Cochran, 1938 -- valid
  Alsophis funereus Cope, 1862 -- invalid
  Alsophis fuscicauda Garman, 1888 -- invalid
  Alsophis leucomelas antiguae Parker, 1933 -- invalid
  Alsophis leucomelas manselli Parker, 1933 -- invalid
  Alsophis manselli Parker, 1933 -- valid -- Montserrat Racer
  Alsophis portoricensis nicholsi Grant, 1937 -- invalid
  Alsophis rijgersmaei Cope, 1869 -- valid -- Leeward Islands Racer, Anguilla Racer, Antilles Racer
  Alsophis rufiventris (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Saba Racer, Orange-bellied Racer
  Alsophis sajdaki Henderson, 1990 -- valid
  Alsophis sanctonum Barbour, 1915 -- valid
  Alsophis sanctonum danforthi Cochran, 1938 -- invalid
  Alsophis sibonius Cope, 1879 -- valid -- Dominican Racer
  Alsophis variegatus Schmidt, 1926 -- invalid
  Alsophis vudii aterrimus Barbour and Shreve, 1935 -- invalid
  Alsophis vudii picticeps Conant, 1937 -- invalid
  Alsophis vudii raineyi Barbour and Shreve, 1935 -- invalid
  Alsophis vudii utowanae Barbour and Shreve, 1935 -- invalid
  Amastridium sapperi (Werner, 1903) -- valid
  Amastridium veliferum Cope, 1861 -- valid -- Culebra cabeza cobriza, Rustyhead Snake
  Amastridium veliferum sapperi (Werner, 1903) -- invalid
  Amblycephalus boa H. Boie, 1828 -- invalid
  Amblycephalus boulengeri Angel, 1920 -- invalid
  Amblycephalus carinatus H. Boie, 1828 -- invalid
  Amblycephalus carinatus unicolor Bourret, 1934 -- invalid
  Amblycephalus chinensis Barbour, 1912 -- invalid
  Amblycephalus formosensis Van Denburgh, 1909 -- invalid
  Amblycephalus formosensis iwasakii Maki, 1937 -- invalid
  Amblycephalus hamptoni Boulenger, 1905 -- invalid
  Amblycephalus komaii Maki, 1931 -- invalid
  Amblycephalus laevis F. Boie, 1827 -- invalid
  Amblycephalus nuchalis Boulenger, 1900 -- invalid
  Amblycephalus stanleyi Boulenger, 1914 -- invalid
  Amblycephalus tropidonotus Lidth de Jeude, 1923 -- invalid
  Amblycephalus vertebralis Boulenger, 1900 -- invalid
  Amblymetopon variegata Günther, 1858 -- invalid
  Amblyodipsas concolor (A. Smith, 1849) -- valid -- Natal Purple-glossed Snake
  Amblyodipsas dimidiata (Günther, 1888) -- valid -- Mpwapwa Purple-glossed Snake
  Amblyodipsas katangensis de Witte and Laurent, 1942 -- valid -- Katanga Purple-glossed Snake
  Amblyodipsas katangensis ionidesi Loveridge, 1951 -- valid
  Amblyodipsas katangensis katangensis de Witte and Laurent, 1942 -- valid
  Amblyodipsas microphthalma (Bianconi, 1852) -- valid -- Eastern Purple-glossed Snake
  Amblyodipsas microphthalma microphthalma (Bianconi, 1852) -- valid
  Amblyodipsas microphthalma nigra Jacobsen, 1986 -- valid
  Amblyodipsas polylepis (Bocage, 1873) -- valid -- Common Purple-glossed Snake
  Amblyodipsas polylepis hildebrandtii (Peters, 1877) -- valid -- Common Purple-glossed Snake
  Amblyodipsas polylepis polylepis (Bocage, 1873) -- valid -- Common Purple-glossed Snake
  Amblyodipsas rodhaini (de Witte, 1930) -- valid -- Rodhain's Purple-glossed Snake
  Amblyodipsas teitana Broadley, 1971 -- valid -- Teitana Purple-glossed Snake
  Amblyodipsas unicolor (Reinhardt, 1843) -- valid -- Dull Purple-glossed Snake, Western Purple-glossed Snake
  Amblyodipsas ventrimaculata (Roux, 1907) -- valid -- Kalahari Purple-glossed Snake
  Amblyrhynchus cristatus Bell, 1825 -- valid -- Marine Iguana
  Amblyrhynchus cristatus albemarlensis Eibl-Eibesfeldt, 1962 -- valid -- Isabela Marine Iguana
  Amblyrhynchus cristatus cristatus Bell, 1825 -- valid -- Fernandina Marine Iguana
  Amblyrhynchus cristatus hassi Eibl-Eibesfeldt, 1962 -- valid -- Santa Cruz Marine Iguana
  Amblyrhynchus cristatus mertensi Eibl-Eibesfeldt, 1962 -- valid -- San Cristóbal Marine Iguana
  Amblyrhynchus cristatus nanus Garman, 1892 -- valid -- Genovesa Marine Iguana
  Amblyrhynchus cristatus sielmanni Eibl-Eibesfeldt, 1962 -- valid -- Pinta Marine Iguana
  Amblyrhynchus cristatus venustissimus Eibl-Eibesfeldt, 1956 -- valid -- Española Marine Iguana
  Amnesteophis melanauchen (Jan, 1863) -- valid
  Amphibolurinae -- valid
  Amphibolurus Wagler, 1830 -- valid
  Amphibolurus burnsi (Wells and Wellington, 1985) -- valid
  Amphibolurus centralis (Loveridge, 1933) -- valid -- Centralian Lashtail
  Amphibolurus muricatus (White, 1790) -- valid -- Jacky Lashtail, Jacky Lizard
  Amphibolurus norrisi Witten and Coventry, 1984 -- valid -- Mallee Heath Lashtail
  Amphiesma A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid
  Amphiesma flaviceps A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Amphiesma stolatum (Linnaeus, 1758) -- valid -- Buff Striped Keelback
  Amphiesma vibakari danjoense Toriba, 1986 -- invalid
  Amphiesmoides Malnate, 1961 -- valid
  Amphiesmoides ornaticeps (Werner, 1924) -- valid -- Werner's Ornate Snake
  Amphiophis angolensis Bocage, 1872 -- invalid
  Amplorhinus multimaculatus A. Smith, 1847 -- valid -- Many-spotted Snake, Cape Reed Snake
  Ancistrodon annamensis Angel, 1933 -- invalid
  Ancistrodon blomhoffi monticola Werner, 1922 -- invalid
  Ancistrodon blomhoffi ussuriensis Emelianov, 1929 -- invalid
  Ancistrodon halys caucasicus Nikolsky, 1916 -- invalid
  Ancistrodon halys stejnegeri Rendahl, 1933 -- invalid
  Ancistrodon saxatilis Emelianov, 1937 -- invalid
  Ancistrodon strauchi Bedriaga, 1912 -- invalid
  Anguis mamillaris Daudin, 1803 -- invalid
  Anguis platura Linnaeus, 1766 -- invalid
  Anisolepis Boulenger, 1891 -- valid
  Anisolepis grilli Boulenger, 1891 -- valid -- Boulenger's Tree Lizard
  Anisolepis longicauda (Boulenger, 1891) -- valid -- Wiegmann's Tree Lizard
  Anisolepis undulatus (Wiegmann, 1834) -- valid -- Wiegmann's Tree Lizard
  Anolis Daudin, 1802 -- valid -- Anoles, Western Antillean Anoles
  Anolis acutus Hallowell, 1857 -- valid -- St. Croix Anole, Sharp Anole, Saint Croix's Anole
  Anolis aeneus Gray, 1840 -- valid -- Bronze Anole
  Anolis aequatorialis Werner, 1894 -- valid -- Equatorial Anole
  Anolis agassizi Stejneger, 1900 -- valid -- Agassiz's Anole
  Anolis agueroi (Díaz, Navarro and Garrido, 1998) -- valid -- Cabo Cruz Bearded Anole
  Anolis ahli Barbour, 1925 -- valid -- Ahl's Anole
  Anolis alayoni Estrada and Hedges, 1995 -- valid -- Guantanamo Twig Anole
  Anolis alfaroi Garrido and Hedges, 1992 -- valid -- Small-fanned Bush Anole
  Anolis aliniger Mertens, 1939 -- valid -- Northern Green Twig Anole, LaVega Anole
  Anolis allisoni Barbour, 1928 -- valid -- Allison's Anole
  Anolis allogus Barbour and Ramsden, 1919 -- valid -- Bueycito Anole
  Anolis alocomyos (G. Köhler, Vargas and Lotzkat, 2014) -- valid
  Anolis altae Dunn, 1930 -- valid -- High Anole
  Anolis altavelensis Noble and Hassler, 1933 -- valid -- Noble's Anole
  Anolis altitudinalis Garrido, 1985 -- valid -- Turquino Green-mottled Anole
  Anolis alumina Hertz, 1976 -- valid -- Shiny Anole
  Anolis alutaceus Cope, 1861 -- valid -- Monte Verde Anole, Blue-eyed Grass-bush Anole
  Anolis alvarezdeltoroi Nieto-Montes de Oca, 1996 -- valid -- Alvarez del Toro's Anole
  Anolis amplisquamosus (McCranie, Wilson and Williams, 1993) -- valid
  Anolis anatoloros Ugueto, Rivas, Barros, Sánchez-Pacheco and Gracía-Pérez, 2007 -- valid
  Anolis anchicayae Poe, Velasco, Miyata and Williams, 2009 -- valid
  Anolis anfiloquioi Garrido, 1980 -- valid -- Anfiodlul Anole
  Anolis angusticeps Hallowell, 1856 -- valid -- Cuban Twig Anole
  Anolis anisolepis H. M. Smith, Burley and Fritts, 1968 -- valid -- Anolis adornado, Chiapas Ornate Anole
  Anolis annectens Williams, 1974 -- valid -- Annex Anole
  Anolis anoriensis Velasco, Gutiérrez-Cárdenas and Quintero-Angel, 2010 -- valid
  Anolis antioquiae Williams, 1985 -- valid -- Antiodlula Anole
  Anolis antonii Boulenger, 1908 -- valid -- Anton's Anole
  Anolis apletolepis G. Köhler and Hedges, 2016 -- valid
  Anolis apletophallus G. Köhler and Sunyer, 2008 -- valid
  Anolis apollinaris Boulenger, 1919 -- valid -- Boulenger's Anole
  Anolis aquaticus Taylor, 1956 -- valid -- Water Anole
  Anolis argenteolus Cope, 1861 -- valid -- Guantanamo Anole
  Anolis argillaceus Cope, 1862 -- valid -- Bay Anole
  Anolis armouri (Cochran, 1934) -- valid -- Armoured Anole
  Anolis auratus Daudin, 1802 -- valid -- Grass Anole
  Anolis bahorucoensis Noble and Hassler, 1933 -- valid -- Bahoruco Long-snouted Anole
  Anolis bahorucoensis bahorucoensis Noble and Hassler, 1933 -- valid
  Anolis bahorucoensis southerlandi Schwartz, 1978 -- valid
  Anolis baleatus (Cope, 1864) -- valid -- Dominican Giant Anole, Puerto Plata Anole
  Anolis baleatus altager Schwartz, 1975 -- valid
  Anolis baleatus baleatus (Cope, 1864) -- valid
  Anolis baleatus caeruleolatus Schwartz, 1974 -- valid
  Anolis baleatus fraudator Schwartz, 1974 -- valid
  Anolis baleatus lineatacervix Schwartz, 1978 -- valid
  Anolis baleatus litorisilva Schwartz, 1974 -- valid
  Anolis baleatus multistruppus Schwartz, 1974 -- valid
  Anolis baleatus samanae Schwartz, 1974 -- valid
  Anolis baleatus scelestus Schwartz, 1974 -- valid
  Anolis baleatus sublimis Schwartz, 1974 -- valid
  Anolis baracoae Schwartz, 1964 -- valid -- Baracoa Anole
  Anolis barahonae Williams, 1962 -- valid -- Barahona Anole
  Anolis barahonae albocellatus Schwartz, 1974 -- valid
  Anolis barahonae barahonae Williams, 1962 -- valid
  Anolis barahonae ininquinatus Cullom and Schwartz, 1980 -- valid
  Anolis barahonae mulitus Cullom and Schwartz, 1980 -- valid
  Anolis barbatus (Garrido, 1982) -- valid -- Western Bearded Anole
  Anolis barbouri (K. P. Schmidt, 1919) -- valid -- Hispaniolan Hopping Anole
  Anolis barkeri K. P. Schmidt, 1939 -- valid -- Anolis de Barker, Barker's Anole
  Anolis bartschi (Cochran, 1928) -- valid -- West Cuban Anole, Western Cliff Anole
  Anolis beckeri Boulenger, 1881 -- valid -- Becker's Lichen Anole
  Anolis bellipeniculus (Myers and Donnelly, 1996) -- valid
  Anolis benedikti Lotzkat, Bienentreu, Hertz and G. Köhler, 2011 -- valid
  Anolis bicaorum (G. Köhler, 1996) -- valid
  Anolis bimaculatus (Sparrman, 1784) -- valid -- Panther Anole
  Anolis binotatus W. C. H. Peters, 1863 -- valid -- Two-marked Anole
  Anolis biporcatus (Wiegmann, 1834) -- valid -- Anolis verde neotropical, Giant Green Anole, Neotropical Green Anole
  Anolis birama Garrido, 1990 -- valid -- Branch Anole
  Anolis bitectus Cope, 1864 -- valid -- Roof Anole
  Anolis blanquillanus Hummelinck, 1940 -- valid -- Hummelinck's Anole
  Anolis boettgeri Boulenger, 1911 -- valid -- Boettger's Anole
  Anolis bombiceps Cope, 1875 -- valid -- Surprise Anole, Blue-lipped Forest Anole
  Anolis bonairensis Ruthven, 1923 -- valid -- Ruthven's Anole
  Anolis boulengerianus Thominot, 1887 -- valid -- Anolis tehuano, Tehuantepec Anole
  Anolis brasiliensis Vanzolini and Williams, 1970 -- valid -- Brazilian Anole
  Anolis bremeri Barbour, 1914 -- valid -- Herradura Anole
  Anolis bremeri bremeri Barbour, 1914 -- valid
  Anolis bremeri insulaepinorum Garrido, 1972 -- valid
  Anolis breslini Schwartz, 1980 -- valid
  Anolis brevirostris Bocourt, 1870 -- valid -- Desert Gracile Anole, Shortnose Anole
  Anolis brevirostris brevirostris Bocourt, 1870 -- valid
  Anolis brevirostris deserticola Arnold, 1980 -- valid
  Anolis brevirostris wetmorei Cochran, 1931 -- valid
  Anolis brunneus Cope, 1894 -- valid -- Crooked Island Anole
  Anolis calimae Ayala, Harris and Williams, 1983 -- valid -- Ayala's Anole
  Anolis campbelli (G. Köhler and E. N. Smith, 2008) -- valid
  Anolis capito W. C. H. Peters, 1863 -- valid -- Anolis jaspeado, Bighead Anole
  Anolis caquetae Williams, 1974 -- valid -- Caqueta Anole
  Anolis carlliebi G. Köhler, Gómez Trejo Pérez, Petersen and Méndez de La Cruz, 2014 -- valid -- Carl Lieb's Anole
  Anolis carlostoddi (Williams, Praderio and Gorzula, 1996) -- valid
  Anolis carolinensis Voigt in Cuvier and Voigt, 1832 -- valid -- Green Anole, Anolis verde, anole vert
  Anolis carolinensis carolinensis Voigt in Cuvier and Voigt, 1832 -- valid
  Anolis carolinensis seminolus Vance, 1991 -- valid
  Anolis carpenteri A. A. Echelle, A. F. Echelle and Fitch, 1971 -- valid -- Carpenter Anole
  Anolis casildae Arosemena, Ibáñez and de Sousa, 1991 -- valid -- Casilda's Anole
  Anolis caudalis Cochran, 1932 -- valid -- Cochran's Gianthead Anole
  Anolis centralis G. Peters, 1970 -- valid -- Central Anole
  Anolis chamaeleonides A. M. C. Duméril and Bibron, 1837 -- valid -- Short-bearded Anole
  Anolis charlesmyersi G. Köhler, 2010 -- valid
  Anolis chloris Boulenger, 1898 -- valid -- Boulenger's Green Anole
  Anolis chlorocyanus A. M. C. Duméril and Bibron, 1837 -- valid -- Hispaniolan Blue-green Anole, Hispaniolan Green Anole, Northern Hispaniolan Green Anole
  Anolis chlorodius G. Köhler and Hedges, 2016 -- valid
  Anolis chocorum Williams and Duellman, 1967 -- invalid
  Anolis christophei Williams, 1960 -- valid -- Big-fanned Trunk Anole, King Christophe Anole
  Anolis chrysolepis A. M. C. Duméril and Bibron, 1837 -- valid -- Goldenscale Anole
  Anolis chrysops Lazell, 1964 -- valid
  Anolis clivicola Barbour and Shreve, 1935 -- valid -- Mountain Anole
  Anolis cobanensis Stuart, 1942 -- valid -- Stuart's Anole
  Anolis coelestinus Cope, 1862 -- valid -- Hispaniolan Green Anole, Jeremie Anole
  Anolis compressicauda H. M. Smith and Kerster, 1955 -- invalid -- Malposo Scaly Anole
  Anolis concolor Cope, 1862 -- valid -- Isla San Andres Anole
  Anolis confusus Estrada and Garrido, 1991 -- valid -- Cabo Cruz Trunk Anole
  Anolis conspersus Garman, 1887 -- valid -- Grand Cayman Blue-fanned Anole, Grand Cayman Anole
  Anolis conspersus conspersus Garman, 1887 -- valid
  Anolis conspersus lewisi Grant, 1940 -- valid
  Anolis cooki Grant, 1931 -- valid -- Cook's Anole, Cook's Pallid Anole
  Anolis crassulus Cope, 1864 -- valid -- Anolis adornado, Ornate Anole
  Anolis cristatellus A. M. C. Duméril and Bibron, 1837 -- valid -- Crested Anole, Puerto Rican Crested Anole, Common Puerto Rican Anole
  Anolis cristatellus cristatellus A. M. C. Duméril and Bibron, 1837 -- valid
  Anolis cristatellus wileyae Grant, 1931 -- valid
  Anolis cristifer H. M. Smith, 1968 -- valid -- Crested Lichen Anole
  Anolis cryptolimifrons G. Köhler and Sunyer, 2008 -- valid
  Anolis cupeyalensis G. Peters, 1970 -- valid -- Cupeyal Anole
  Anolis cupreus Hallowell, 1860 -- valid -- Copper Anole
  Anolis cupreus cupreus Hallowell, 1860 -- valid
  Anolis cupreus dariense Fitch and Seigel, 1984 -- valid
  Anolis cupreus hoffmanni W. C. H. Peters, 1863 -- valid
  Anolis cupreus spilomelas Fitch, A. A. Echelle and A. E. Echelle, 1972 -- valid
  Anolis cuprinus H. M. Smith, 1964 -- valid -- Anolis chiapaneco, Copper Anole
  Anolis cuscoensis Poe, Yañez-Miranda and Lehr, 2008 -- valid
  Anolis cusuco (McCranie, G. Köhler and Wilson, 2000) -- valid
  Anolis cuvieri Merrem, 1820 -- valid -- Puerto Rican Giant Anole, Cuvier's Anole, Green Giant Anole
  Anolis cyanopleurus Cope, 1861 -- valid -- Yateras Anole
  Anolis cyanopleurus cyanopleurus Cope, 1861 -- valid
  Anolis cyanopleurus orientalis Garrido, 1975 -- valid
  Anolis cyanostictus Mertens, 1939 -- valid
  Anolis cybotes Cope, 1862 -- valid -- Large-headed Anole, Hispaniolan Stout Anole, Largehead Anole
  Anolis cybotes cybotes Cope, 1862 -- valid
  Anolis cybotes doris Barbour, 1925 -- valid
  Anolis cybotes ravifaux Schwartz and Henderson, 1982 -- valid
  Anolis cymbops Cope, 1864 -- valid -- Anolis veracruzano, Cope's Veracruz Anole
  Anolis damulus Cope, 1864 -- valid -- Cope's Smooth Anole
  Anolis danieli Williams, 1988 -- valid
  Anolis darlingtoni (Cochran, 1935) -- valid -- Darlington's Anole
  Anolis datzorum G. Köhler, Ponce, Sunyer and Batista, 2007 -- valid
  Anolis delafuentei Garrido, 1982 -- valid -- Guamuhaya Anole
  Anolis deltae Williams, 1974 -- valid -- Delta Anole
  Anolis demissus Schwartz, 1969 -- valid -- Île Grande Cayemite Green Anole
  Anolis desechensis Heatwole, 1976 -- valid -- Desecheo Anole, Heatwole's Anole
  Anolis desiradei Lazell, 1964 -- valid
  Anolis dissimilis Williams, 1965 -- valid -- Odd Anole
  Anolis distichus Cope, 1861 -- valid -- Bark Anole, Hispaniolan Gracile Anole
  Anolis distichus aurifer Schwartz, 1968 -- valid
  Anolis distichus biminiensis Oliver, 1948 -- valid
  Anolis distichus dapsilis Schwartz, 1968 -- valid
  Anolis distichus distichoides Rosén, 1911 -- valid
  Anolis distichus distichus Cope, 1861 -- valid
  Anolis distichus dominicensis Reinhardt and Lütken, 1863 -- valid
  Anolis distichus favillarum Schwartz, 1968 -- valid
  Anolis distichus floridanus H. M. Smith and McCauley, 1948 -- valid
  Anolis distichus ignigularis Mertens, 1939 -- valid
  Anolis distichus juliae Cochran, 1934 -- valid
  Anolis distichus ocior Schwartz, 1968 -- valid
  Anolis distichus patruelis Schwartz, 1968 -- valid
  Anolis distichus properus Schwartz, 1968 -- valid
  Anolis distichus ravitergum Schwartz, 1968 -- valid
  Anolis distichus sejunctus Schwartz, 1968 -- valid
  Anolis distichus suppar Schwartz, 1968 -- valid
  Anolis distichus tostus Schwartz, 1968 -- valid
  Anolis distichus vinosus Schwartz, 1968 -- valid
  Anolis divius G. Köhler and Hedges, 2016 -- valid
  Anolis dolichocephalus Williams, 1963 -- valid -- Place Negre Anole
  Anolis dolichocephalus dolichocephalus Williams, 1963 -- valid
  Anolis dolichocephalus portusalus Schwartz, 1978 -- valid
  Anolis dolichocephalus sarmenticola Schwartz, 1978 -- valid
  Anolis dollfusianus Bocourt, 1873 -- valid -- Anolis cafetalero, Coffee Anole
  Anolis duellmani Fitch and Henderson, 1973 -- valid -- Anolis de Duellman, Duellman's Pigmy Anole
  Anolis dunni H. M. Smith, 1936 -- valid -- Anolis de Dunn, Dunn's Anole
  Anolis eladioi G. Köhler and Hedges, 2016 -- valid
  Anolis elcopeensis Poe, Scarpetta and Schaad, 2015 -- valid
  Anolis equestris Merrem, 1820 -- valid -- Knight Anole
  Anolis equestris brujensis Garrido, 2001 -- valid
  Anolis equestris buidei Schwartz and Garrido, 1972 -- valid
  Anolis equestris cincoleguas Garrido, 1981 -- valid
  Anolis equestris cyaneus Garrido and Estrada, 2001 -- valid
  Anolis equestris equestris Merrem, 1820 -- valid
  Anolis equestris juraguensis Schwartz and Garrido, 1972 -- valid
  Anolis equestris persparsus Schwartz and Garrido, 1972 -- valid
  Anolis equestris potior Schwartz and Thomas, 1975 -- valid
  Anolis equestris sabinalensis Garrido and Moreno, 2001 -- valid
  Anolis equestris thomasi Schwartz, 1958 -- valid
  Anolis equestris verreonensis Schwartz and Garrido, 1972 -- valid
  Anolis ernestwilliamsi Lazell, 1983 -- valid -- Carrot Rock's Anole, Ernest's Anole
  Anolis etheridgei Williams, 1962 -- valid -- Etheridge's Anole, Montane Bush Anole
  Anolis eugenegrahami Schwartz, 1978 -- valid -- Eugene's Anole
  Anolis eulaemus Boulenger, 1908 -- valid -- Good Anole
  Anolis euskalerriari Barros, Williams and Viloria, 1996 -- valid
  Anolis evermanni Stejneger, 1904 -- valid -- Emerald Anole, Small Green Anole, Evermann's Anole
  Anolis extremus Garman, 1887 -- valid -- Barbados Anole
  Anolis fairchildi Barbour and Shreve, 1935 -- valid -- Cay Sal Anole
  Anolis fasciatus Boulenger, 1885 -- valid -- Banded Anole
  Anolis ferreus (Cope, 1864) -- valid -- Marie-Galante Sail-tailed Anole, Morne Constant Anole
  Anolis festae Peracca, 1904 -- valid -- Veronica's Anole
  Anolis fitchi Williams and Duellman, 1984 -- valid -- Fitch's Anole
  Anolis forresti Barbour, 1923 -- valid
  Anolis fortunensis Arosemena and Ibáñez, 1993 -- valid
  Anolis fowleri Schwartz, 1973 -- valid -- Fowler's Anole
  Anolis fraseri Günther, 1859 -- valid -- Fraser's Anole
  Anolis frenatus Cope, 1899 -- valid -- Bridled Anole
  Anolis fugitivus Garrido, 1975 -- valid -- Moa Anole
  Anolis fungosus Myers, 1971 -- valid -- Myers' Anole
  Anolis fuscoauratus d'Orbigny in A. M. C. Duméril and Bibron, 1837 -- valid -- Brown-eared Anole, Slender Anole
  Anolis gadovii Boulenger, 1905 -- valid -- Gadow's Anole
  Anolis gaigei Ruthven, 1916 -- valid -- Gaige's Anole
  Anolis garmani Stejneger, 1899 -- valid -- Jamaican Giant Anole, Jamaican Anole
  Anolis garridoi Díaz, Estrada and Moreno, 1996 -- valid -- Escambray Twig Anole
  Anolis gemmosus O'Shaughnessy, 1875 -- valid -- O'Shaughnessy's Anole
  Anolis gibbiceps Cope, 1864 -- valid -- Hook Anole
  Anolis ginaelisae (Lotzkat, Hertz, Bienentreu and G. Köhler, 2013) -- valid
  Anolis gingivinus Cope, 1864 -- valid -- Anguilla Bank Anole, Anguilla Anole
  Anolis gonavensis G. Köhler and Hedges, 2016 -- valid
  Anolis gorgonae Barbour, 1905 -- valid
  Anolis gracilipes Boulenger, 1898 -- valid -- Charm Anole
  Anolis grahami Gray, 1845 -- valid -- Graham's Anole
  Anolis grahami aquarum Underwood and Williams, 1959 -- valid
  Anolis grahami grahami Gray, 1845 -- valid
  Anolis granuliceps Boulenger, 1898 -- valid -- Granular Anole
  Anolis griseus Garman, 1887 -- valid -- Saint Vincent's Tree Anole
  Anolis gruuo G. Köhler, Ponce, Sunyer and Batista, 2007 -- valid
  Anolis guafe Estrada and Garrido, 1991 -- valid -- Cabo Cruz Banded Anole
  Anolis guamuhaya (Garrido, Pérez-Beato and Moreno, 1991) -- valid -- Escambray Bearded Anole
  Anolis guazuma Garrido, 1984 -- valid -- Sierra Anole
  Anolis gundlachi W. C. H. Peters, 1876 -- valid -- Yellow-chinned Anole, Gundlach's Anole, Yellow-bearded Anole
  Anolis haetianus Garman, 1887 -- valid -- Tiburon Anole
  Anolis haguei Stuart, 1942 -- valid -- Hague's Anole
  Anolis hendersoni Cochran, 1923 -- valid -- Henderson's Anole
  Anolis hendersoni hendersoni Cochran, 1923 -- valid
  Anolis hendersoni ravidormitans Schwartz, 1978 -- valid
  Anolis heterodermus A. H. A. Duméril, 1851 -- valid -- Flat Andes Anole
  Anolis hobartsmithi Nieto-Montes de Oca, 2001 -- valid -- Hobart Smith's Anole
  Anolis homolechis (Cope, 1864) -- valid -- Habana Anole
  Anolis homolechis homolechis (Cope, 1864) -- valid
  Anolis homolechis turquinensis Garrido, 1973 -- valid
  Anolis huilae Williams, 1982 -- valid -- Huila Anole
  Anolis humilis W. C. H. Peters, 1863 -- valid -- Humble Anole
  Anolis ibague Williams, 1975 -- valid -- Ibague Anole
  Anolis ibanezi Poe, Latella, Ryan and Schaad, 2009 -- valid
  Anolis imias Ruibal and Williams, 1961 -- valid -- Imias Anole
  Anolis immaculogularis G. Köhler, Gómez Trejo Pérez, Petersen and Méndez de La Cruz, 2014 -- valid
  Anolis impetigosus Cope, 1864 -- valid
  Anolis incredulus Garrido and Moreno, 1998 -- valid -- Turquino Emerald Anole
  Anolis inderenae (Rueda and Hernández-Camacho, 1998) -- valid
  Anolis inexpectatus Garrido and Estrada, 1989 -- valid -- Pineland Bush Anole
  Anolis insignis Cope, 1871 -- valid -- Decorated Anole
  Anolis insolitus Williams and Rand, 1969 -- valid -- La Palma Anole
  Anolis intermedius W. C. H. Peters, 1863 -- valid -- Intermediate Anole
  Anolis isolepis (Cope, 1861) -- valid -- Jatibonico Anole
  Anolis jacare Boulenger, 1903 -- valid -- Jacare Anole
  Anolis johnmeyeri Wilson and McCranie, 1982 -- valid -- Meyer's Anole
  Anolis juangundlachi Garrido, 1975 -- valid -- Finca Ceres Anole
  Anolis jubar Schwartz, 1968 -- valid -- Cubitas Anole
  Anolis jubar albertschwartzi Garrido, 1973 -- valid
  Anolis jubar balaenarum Schwartz, 1968 -- valid
  Anolis jubar cocoensis Estrada and Garrido, 1990 -- valid
  Anolis jubar cuneus Schwartz, 1968 -- valid
  Anolis jubar gibarensis Garrido, 1973 -- valid
  Anolis jubar jubar Schwartz, 1968 -- valid
  Anolis jubar maisiensis Schwartz, 1968 -- valid
  Anolis jubar oriens Schwartz, 1968 -- valid
  Anolis jubar santamariae Garrido, 1973 -- valid
  Anolis jubar yaguajayensis Garrido, 1973 -- valid
  Anolis kahouannensis Lazell, 1964 -- valid
  Anolis kemptoni Dunn, 1940 -- valid -- Kempton's Anole
  Anolis koopmani Rand, 1961 -- valid -- Koopmans Anole
  Anolis kreutzi (McCranie, G. Köhler and Wilson, 2000) -- valid
  Anolis krugi W. C. H. Peters, 1876 -- valid -- Upland Grass Anole, Olive Bush Anole, Krug's Anole, Orange Dewlap Anole
  Anolis kunayalae Hulebak, Poe, Ibáñez and Williams, 2007 -- valid
  Anolis laevis (Cope, 1875) -- valid -- Smooth Anole
  Anolis laeviventris (Wiegmann, 1834) -- valid -- Anolis blanco, White Anole
  Anolis lamari Williams, 1992 -- valid
  Anolis landestoyi Mahler, Lambert, Geneva, Ng, Hedges, Losos and Glor, 2016 -- valid
  Anolis latifrons Berthold, 1846 -- valid
  Anolis leachii A. M. C. Duméril and Bibron, 1837 -- valid -- Barbuda Bank Tree Anole, Panther Anole
  Anolis leditzigorum (G. Köhler, Vargas and Lotzkat, 2014) -- valid
  Anolis lemniscatus Boulenger, 1898 -- valid
  Anolis lemurinus Cope, 1861 -- valid -- Anolis fantasma, Ghost Anole
  Anolis leucodera G. Köhler and Hedges, 2016 -- valid
  Anolis limifrons Cope, 1862 -- valid -- Border Anole, Slender Anole
  Anolis limon Velasco and Hurtado-Gómez, 2014 -- valid
  Anolis lineatopus Gray, 1840 -- valid -- Stripefoot Anole
  Anolis lineatopus ahenobarbus Underwood and Williams, 1959 -- valid
  Anolis lineatopus lineatopus Gray, 1840 -- valid
  Anolis lineatopus merope Underwood and Williams, 1959 -- valid
  Anolis lineatopus neckeri Grant, 1940 -- valid
  Anolis lineatus Daudin, 1802 -- valid -- Striped Anole
  Anolis liogaster Boulenger, 1905 -- valid -- Anolis rojo, Guerreran Anole
  Anolis lionotus Cope, 1861 -- valid -- Lion Anole
  Anolis litoralis Garrido, 1975 -- valid -- Oriente Pallid Anole
  Anolis lividus Garman, 1887 -- valid -- Plymouth Anole
  Anolis longiceps K. P. Schmidt, 1919 -- valid -- Navassa Anole
  Anolis longitibialis Noble, 1923 -- valid -- Isla Beata Anole
  Anolis longitibialis longitibialis Noble, 1923 -- valid
  Anolis longitibialis specuum Schwartz, 1979 -- valid
  Anolis loveridgei K. P. Schmidt, 1936 -- valid -- Loveridge's Anole
  Anolis loysiana A. M. C. Duméril and Bibron, 1837 -- valid -- Peach Anole
  Anolis luciae Garman, 1887 -- valid -- Saint Lucian Anole, St. Lucia Anole
  Anolis lucius A. M. C. Duméril and Bibron, 1837 -- valid -- Cave Anole
  Anolis luteogularis Noble and Hassler, 1935 -- valid -- Western Giant Anole, White-throated Anole
  Anolis luteogularis calceus Schwartz and Garrido, 1972 -- valid
  Anolis luteogularis coctilis Schwartz and Garrido, 1972 -- valid
  Anolis luteogularis delacruzi Schwartz and Garrido, 1972 -- valid
  Anolis luteogularis hassleri Barbour and Shreve, 1935 -- valid
  Anolis luteogularis jaumei Schwartz and Garrido, 1972 -- valid
  Anolis luteogularis luteogularis Noble and Hassler, 1935 -- valid
  Anolis luteogularis nivevultus Schwartz and Garrido, 1972 -- valid
  Anolis luteogularis sanfelipensis Garrido, 1975 -- valid
  Anolis luteogularis sectilis Schwartz and Garrido, 1972 -- valid
  Anolis luteosignifer Garman, 1888 -- valid -- Cayman Brac Anole
  Anolis lynchi Miyata, 1985 -- valid -- Lynch's Anole
  Anolis lyra Poe, Velasco, Miyata and Williams, 2009 -- valid
  Anolis macilentus Garrido and Hedges, 1992 -- valid -- Black-cheeked Bush Anole
  Anolis macrinii H. M. Smith, 1968 -- valid -- Anolis de Macrinus, Macrinius' Anole
  Anolis macrolepis Boulenger, 1911 -- valid -- Big-scaled Anole
  Anolis macrophallus Werner, 1917 -- valid
  Anolis maculigula Williams, 1984 -- valid
  Anolis maculiventris Boulenger, 1898 -- valid -- Blotchbelly Anole
  Anolis magnaphallus Poe and Ibáñez, 2007 -- valid
  Anolis maia (Batista, Vesely, Mebert, Lotzkat and G. Köhler, 2015) -- valid
  Anolis marcanoi Williams, 1975 -- valid -- Red-fanned Stout Anole
  Anolis mariarum Barbour, 1932 -- valid -- Blemished Anole
  Anolis marmoratus A. M. C. Duméril and Bibron, 1837 -- valid -- Guadeloupean Anole, Leopard Anole
  Anolis marmoratus alliaceus Cope, 1864 -- valid
  Anolis marmoratus caryae Lazell, 1964 -- valid
  Anolis marmoratus girafus Lazell, 1964 -- valid
  Anolis marmoratus inornatus Lazell, 1964 -- valid
  Anolis marmoratus marmoratus A. M. C. Duméril and Bibron, 1837 -- valid
  Anolis marmoratus setosus Lazell, 1964 -- valid
  Anolis marmoratus speciosus Garman, 1887 -- valid
  Anolis marron Arnold, 1980 -- valid -- Jacmel Anole
  Anolis marsupialis Taylor, 1956 -- valid
  Anolis matudai H. M. Smith, 1956 -- valid -- Anolis de Matuda, Matuda's Anole
  Anolis maynardi Garman, 1888 -- valid -- Maynard's Anole
  Anolis mccraniei (G. Köhler, Townsend and Petersen, 2016) -- valid
  Anolis medemi Ayala and Williams, 1988 -- valid
  Anolis megalopithecus Rueda-Almonacid, 1989 -- valid -- Ruida's Anole
  Anolis megapholidotus H. M. Smith, 1933 -- valid -- Anolis de escamas grandes, Large-scaled Anole
  Anolis menta Ayala, Harris and Williams, 1984 -- valid -- Mixed Anole
  Anolis meridionalis Boettger, 1885 -- valid
  Anolis mestrei Barbour and Ramsden, 1916 -- valid -- Pinardel Rio Anole
  Anolis microlepidotus Davis, 1954 -- valid -- Anolis guerrerense, Guerreran Oak Anole
  Anolis microlepis Álvarez del Toro and H. M. Smith, 1956 -- valid -- Chiapas Smooth Anole
  Anolis microtus Cope, 1871 -- valid -- Tiny Anole
  Anolis milleri H. M. Smith in H. M. Smith and Taylor, 1950 -- valid -- Anolis de Miller, Miller's Anole
  Anolis mirus Williams, 1963 -- valid
  Anolis monensis Stejneger, 1904 -- valid -- Mona Anole
  Anolis monteverde G. Köhler, 2009 -- valid
  Anolis monticola Shreve, 1936 -- valid -- Foothill Anole
  Anolis monticola monticola Shreve, 1936 -- valid
  Anolis monticola quadrisartus Thomas and Schwartz, 1967 -- valid
  Anolis morazani Townsend and Wilson, 2009 -- valid
  Anolis muralla (G. Köhler, McCranie and Wilson, 1999) -- valid
  Anolis nasofrontalis Amaral, 1933 -- valid -- Nose Anole
  Anolis naufragus (Campbell, Hillis and Lamar, 1989) -- valid -- Anolis de Hidalgo, Hidalgo Anole
  Anolis neblininus (Myers, Williams and McDiarmid, 1993) -- valid
  Anolis nebuloides Bocourt, 1873 -- valid -- Anolis falso-pañuelo, False Clouded Anole
  Anolis nebulosus (Wiegmann, 1834) -- valid -- Anolis pañuelo, Clouded Anole
  Anolis nelsoni Barbour, 1914 -- valid -- Nelson's Anole
  Anolis nicefori Barbour, 1932 -- valid -- Niceforo's Andes Anole
  Anolis nietoi G. Köhler, Gómez Trejo Pérez, Petersen and Méndez de La Cruz, 2014 -- valid
  Anolis nigrolineatus Williams, 1965 -- valid
  Anolis noblei Barbour and Shreve, 1935 -- valid -- Holguin Anole
  Anolis notopholis Boulenger, 1896 -- valid -- Scalyback Anole
  Anolis nubilus Garman, 1887 -- valid -- Redonda Anole
  Anolis occultus Williams and Rivero, 1965 -- valid -- Pygmy Anole, Puerto Rican Twig Anole, Limestone Anole, Dwarf Anole
  Anolis ocelloscapularis (G. Köhler, McCranie and Wilson, 2001) -- valid
  Anolis oculatus (Cope, 1879) -- valid -- Dominican Anole, Eyed Anole
  Anolis oculatus cabritensis Lazell, 1962 -- valid
  Anolis oculatus montanus Lazell, 1962 -- valid
  Anolis oculatus oculatus (Cope, 1879) -- valid
  Anolis oculatus winstonorum Lazell, 1962 -- valid
  Anolis oligaspis Cope, 1894 -- valid -- Bahama Anole
  Anolis olssoni K. P. Schmidt, 1919 -- valid -- Desert Grass Anole, Monte Cristi Anole
  Anolis olssoni alienus Schwartz, 1981 -- valid
  Anolis olssoni dominigensis Schwartz, 1981 -- valid
  Anolis olssoni extentus Schwartz, 1981 -- valid
  Anolis olssoni ferrugicauda Schwartz, 1981 -- valid
  Anolis olssoni insulanus Schwartz, 1981 -- valid
  Anolis olssoni montivagus Schwartz, 1981 -- valid
  Anolis olssoni olssoni K. P. Schmidt, 1919 -- valid
  Anolis olssoni palloris Schwartz, 1981 -- valid
  Anolis omiltemanus Davis, 1954 -- valid -- Anolis de Omilteme, Omilteme Anole
  Anolis onca (O'Shaughnessy, 1875) -- valid -- Bulky Anole
  Anolis opalinus Gosse, 1850 -- valid -- Bluefields Anole
  Anolis ophiolepis Cope, 1861 -- valid -- Five-striped Grass Anole, Snakescale Anole
  Anolis oporinus Garrido and Hedges, 2001 -- valid -- Pimienta Green Anole
  Anolis orcesi (Lazell, 1969) -- valid -- Orces' Andes Anole
  Anolis ordinatus Cope, 1864 -- valid -- Bahaman Brown Anole
  Anolis ortonii Cope, 1868 -- valid -- Bark Anole, Orton's Anole
  Anolis osa G. Köhler, Dehling and J. Köhler, 2010 -- valid
  Anolis otongae Ayala-Varela and Velasco, 2010 -- valid
  Anolis oxylophus Cope, 1875 -- valid -- Stream Anole
  Anolis pachypus Cope, 1875 -- valid -- Thick Anole
  Anolis paravertebralis Bernal-Carlo and Roze, 2005 -- valid
  Anolis parilis Williams, 1975 -- valid -- Ecuador Anole
  Anolis parvicirculatus Álvarez del Toro and H. M. Smith, 1956 -- valid -- Anolis de Barriozabal, Berriozabal Anole
  Anolis paternus Hardy, 1967 -- valid -- Nueva Gerona Anole
  Anolis paternus paternus Hardy, 1967 -- valid
  Anolis paternus pinarensis Garrido, 1975 -- valid
  Anolis pecuarius Schwartz, 1969 -- valid -- Île-à-Vache Green Anole
  Anolis pentaprion Cope, 1863 -- valid -- Anolis liquen, Lichen Anole
  Anolis peraccae Boulenger, 1898 -- valid
  Anolis peruensis Poe, Latella, Ayala-Varela, Yañez-Miranda and Torres-Carvajal, 2015 -- valid
  Anolis petersii Bocourt, 1873 -- valid -- Peters' Anole
  Anolis peucephilus G. Köhler, Gómez Trejo Pérez, Petersen and Méndez de La Cruz, 2014 -- valid
  Anolis peynadoi Mertens, 1939 -- valid -- Northern Hispaniolan Green Anole, Hispaniolan Green Anole
  Anolis philopunctatus M. T. Rodrigues, 1988 -- invalid
  Anolis phyllorhinus G. S. Myers and Carvalho, 1945 -- valid -- Leaf-nosed Anole, Bat Anole
  Anolis pigmaequestris Garrido, 1975 -- valid -- Cayko Frances Anole
  Anolis pijolense (McCranie, Wilson and Williams, 1993) -- valid
  Anolis pinchoti Cochran, 1931 -- valid -- Crab Cay Anole
  Anolis placidus Hedges and Thomas, 1989 -- valid -- Placid Anole
  Anolis planiceps Troschel, 1848 -- valid -- Goldenscale Anole
  Anolis podocarpus Ayala-Varela and Torres-Carvajal, 2010 -- valid
  Anolis poecilopus Cope, 1862 -- valid -- Dappled Anole
  Anolis poei Ayala-Varela, Troya-Rodriguez, Talero-Rodriguez and Torres-Carvajal, 2014 -- valid -- Telimbela Anole
  Anolis pogus Lazell, 1972 -- valid -- Anguilla Bank Bush Anole, Watts' Anole
  Anolis polylepis W. C. H. Peters, 1874 -- valid -- Many-scaled Anole
  Anolis poncensis Stejneger, 1904 -- valid -- Dryland Grass Anole, Ponce Small-fanned Anole, Ponce Anole
  Anolis porcatus Gray, 1840 -- valid -- Cuban Green Anole
  Anolis porcatus aracelyae Pérez-Beato, 1996 -- valid
  Anolis porcatus porcatus Gray, 1840 -- valid
  Anolis porcus (Cope, 1864) -- valid -- Oriente Bearded Anole
  Anolis prasinorius G. Köhler and Hedges, 2016 -- valid
  Anolis princeps Boulenger, 1902 -- valid -- First Anole
  Anolis proboscis J. A. Peters and Orces, 1956 -- valid -- Horned Anole, Pinocchio Lizard
  Anolis propinquus Williams, 1984 -- valid
  Anolis pseudokemptoni G. Köhler, Ponce, Sunyer and Batista, 2007 -- valid
  Anolis pseudopachypus G. Köhler, Ponce, Sunyer and Batista, 2007 -- valid
  Anolis pseudotigrinus Amaral, 1933 -- valid -- False Tiger Anole
  Anolis pulchellus A. M. C. Duméril and Bibron, 1837 -- valid -- Common Grass Anole, Puerto Rican Anole, Puerto Rican Bush Anole, Snake Anole
  Anolis pumilus Garrido, 1988 -- valid -- Cuban Spiny-Plant Anole
  Anolis punctatus Daudin, 1802 -- valid -- Spotted Anole, Amazon Green Anole
  Anolis punctatus boulengeri O'Shaughnessy, 1881 -- valid
  Anolis punctatus punctatus Daudin, 1802 -- valid
  Anolis purpurescens Cope, 1899 -- valid -- Purple Anole
  Anolis purpurgularis (McCranie, Cruz and Holm, 1993) -- valid
  Anolis pygmaeus Álvarez del Toro and H. M. Smith, 1956 -- valid -- Anolis pigmeo-de Chiapas, Chiapas Pigmy Anole
  Anolis quadriocellifer Barbour and Ramsden, 1919 -- valid -- Peninsula Anole
  Anolis quaggulus Cope, 1885 -- valid
  Anolis quercorum Fitch, 1978 -- valid -- Anolis encinero, Oaxacan Oak Anole, Gray Anole
  Anolis radulinus Cope, 1862 -- valid
  Anolis reconditus Underwood and Williams, 1959 -- valid -- Blue Mountains Anole
  Anolis rejectus Garrido and Schwartz, 1972 -- valid -- Santiago Grass Anole
  Anolis rhombifer Boulenger, 1894 -- invalid
  Anolis richardii A. M. C. Duméril and Bibron, 1837 -- valid -- Cocoloba Lizard, Richard's Anole, Grenada Tree Anole
  Anolis ricordii A. M. C. Duméril and Bibron, 1837 -- valid -- Haitian Green Anole
  Anolis ricordii leberi Williams, 1965 -- valid
  Anolis ricordii ricordii A. M. C. Duméril and Bibron, 1837 -- valid
  Anolis ricordii subsolanus Schwartz, 1974 -- valid
  Anolis ricordii viculus Schwartz, 1974 -- valid
  Anolis rimarum Thomas and Schwartz, 1967 -- valid -- Marmelade Anole
  Anolis rivalis Williams, 1984 -- valid -- Neighbor Anole
  Anolis roatanensis (G. Köhler and McCranie, 2001) -- valid
  Anolis rodriquezii Bocourt, 1873 -- valid -- Anolis liso, Rodriguez's Anole
  Anolis roosevelti Grant, 1931 -- valid -- Culebra Island Giant Anole, Culebra Giant Anole
  Anolis roquet (Bonnaterre, 1879) -- valid -- Martinique's Anole, Savannah Anole
  Anolis roquet caracoli Lazell, 1972 -- valid
  Anolis roquet majolgris Lazell, 1972 -- valid
  Anolis roquet roquet (Bonnaterre, 1879) -- valid
  Anolis roquet salinei Lazell, 1972 -- valid
  Anolis roquet summus Lazell, 1972 -- valid
  Anolis roquet zebrilus Lazell, 1972 -- valid
  Anolis rubiginosus Bocourt, 1873 -- valid -- Sierra Juarez Anole
  Anolis rubribarbaris (G. Köhler, McCranie and Wilson, 1999) -- valid
  Anolis rubribarbus Barbour and Ramsden, 1919 -- valid -- Sagua de Tanamo Anole
  Anolis ruibali Navarro and Garrido, 2004 -- valid -- Cabo Cruz Pallid Anole
  Anolis ruizii Rueda and Williams, 1986 -- valid
  Anolis rupinae Williams and Webster, 1974 -- valid -- Castillon Anole
  Anolis sabanus Garman, 1887 -- valid -- Saban Anole
  Anolis sacamecatensis G. Köhler, Gómez Trejo Pérez, Petersen and Méndez de La Cruz, 2014 -- valid
  Anolis sagrei Cocteau in A. M. C. Duméril and Bibron, 1837 -- valid -- Brown Anole, Anolis café, Cuban Brown Anole
  Anolis sagrei greyi Barbour, 1914 -- valid
  Anolis sagrei mayensis H. M. Smith and Burger, 1949 -- valid
  Anolis sagrei sagrei Cocteau in A. M. C. Duméril and Bibron, 1837 -- valid
  Anolis salvini Boulenger, 1885 -- valid -- Salvin's Anole
  Anolis santamartae Willims, 1982 -- valid -- Santa Marta Anole
  Anolis scapularis Boulenger, 1908 -- valid
  Anolis schiedii (Wiegmann, 1834) -- valid -- Schiede's Anole
  Anolis schwartzi Lazell, 1972 -- valid -- Schwartz' Anole
  Anolis scriptus Garman, 1887 -- valid -- Silver Key Anole
  Anolis scriptus leucophaeus Garman, 1888 -- valid
  Anolis scriptus mariguanae Cochran, 1931 -- valid
  Anolis scriptus scriptus Garman, 1887 -- valid
  Anolis scriptus sularum Barbour and Shreve, 1935 -- valid
  Anolis scypheus Cope, 1864 -- valid -- Yellow-tongued Anole
  Anolis semilineatus Cope, 1864 -- valid -- Hispaniolan Grass Anole, Santo Domingo Anole
  Anolis sericeus Hallowell, 1856 -- valid -- Anolis sedoso, Silky Anole
  Anolis serranoi (G. Köhler, 1999) -- valid -- Serrano's Anole
  Anolis sheplani Schwartz, 1974 -- valid -- Cabral Anole
  Anolis shrevei (Cochran, 1939) -- valid -- Shreve's Anole
  Anolis sierramaestrae Holánová, Rehák and Frynta, 2012 -- valid
  Anolis singularis Williams, 1965 -- valid -- Porcupine Anole
  Anolis smallwoodi Schwartz, 1964 -- valid -- Smallwood's Anole
  Anolis smallwoodi palardis Schwartz, 1964 -- valid
  Anolis smallwoodi saxuliceps Schwartz, 1964 -- valid
  Anolis smallwoodi smallwoodi Schwartz, 1964 -- valid
  Anolis smaragdinus Barbour and Shreve, 1935 -- valid -- Bahamian Green Anole
  Anolis smaragdinus lerneri Oliver, 1948 -- valid
  Anolis smaragdinus smaragdinus Barbour and Shreve, 1935 -- valid
  Anolis sminthus Dunn and Emlen, 1932 -- valid -- Mouse Anole
  Anolis soinii Poe and Yañez-Miranda, 2008 -- valid
  Anolis solitarius Ruthven, 1916 -- valid -- Solitaire Anole
  Anolis spectrum W. C. H. Peters, 1863 -- valid -- Matanzas Anole
  Anolis spilorhipis (Álvarez del Toro and H. M. Smith, 1956) -- valid
  Anolis squamulatus W. C. H. Peters, 1863 -- valid -- Small-scaled Anole
  Anolis stevepoei G. Köhler, Gómez Trejo Pérez, Petersen and Méndez de La Cruz, 2014 -- valid
  Anolis strahmi Schwartz, 1979 -- valid -- Strahm's Anole
  Anolis strahmi abditus Schwartz, 1979 -- valid
  Anolis strahmi strahmi Schwartz, 1979 -- valid
  Anolis stratulus Cope, 1861 -- valid -- Barred Anole, Spotted Anole, St. Thomas Anole, Banded Anole
  Anolis subocularis Davis, 1954 -- valid -- Anolis del Pacífico, Pacific Anole
  Anolis sulcifrons Cope, 1899 -- valid -- Grooved Anole
  Anolis tandai Avila-Pires, 1995 -- valid -- Tandai's Anole
  Anolis taylori H. M. Smith and Spieler, 1945 -- valid -- Anolis de Taylor, Taylor's Anole
  Anolis tenorioensis G. Köhler, 2011 -- valid
  Anolis terraealtae Barbour, 1915 -- valid -- Les Saines Anole
  Anolis terueli Navarro, Fernández and Garrido, 2001 -- valid -- Yellow-fanned Pallid Anole
  Anolis tetarii (Barros, Williams and Viloria, 1996) -- valid
  Anolis tigrinus W. C. H. Peters, 1863 -- valid -- Tiger Anole
  Anolis toldo Fong and Garrido, 2000 -- valid -- Gray-banded Green Anole
  Anolis tolimensis Werner, 1916 -- valid
  Anolis townsendi Stejneger, 1900 -- valid -- Townsend's Anole
  Anolis trachyderma Cope, 1875 -- valid -- Roughskin Anole, Common Forest Anole
  Anolis transversalis A. H. A. Duméril, 1851 -- valid -- Transverse Anole, Banded Tree Anole
  Anolis trinitatis Reinhardt and Lütken, 1862 -- valid -- Saint Vincent's Bush Anole, Trinidad Anole
  Anolis triumphalis (Nicholson and G. Köhler, 2014) -- valid
  Anolis tropidogaster Hallowell, 1856 -- valid -- Tropical Anole
  Anolis tropidolepis Boulenger, 1885 -- valid -- Swift Anole
  Anolis tropidonotus W. C. H. Peters, 1863 -- valid -- Anolis escamoso-mayor, Greater Scaly Anole
  Anolis umbrivagus Bernal-Carlo and Roze, 2005 -- valid
  Anolis uniformis Cope, 1885 -- valid -- Anolis escamoso-menor, Lesser Scaly Anole
  Anolis unilobatus G. Köhler and Vesely, 2010 -- valid
  Anolis ustus Cope, 1864 -- valid
  Anolis utilensis (G. Köhler, 1996) -- valid -- Utila Anole
  Anolis valencienni A. M. C. Duméril and Bibron, 1837 -- valid -- Short-tail Anole
  Anolis vanidicus Garrido and Schwartz, 1972 -- valid -- Vanidicus Anole
  Anolis vanzolinii (Williams, Orces, Matheus and Bleiweiss, 1996) -- valid
  Anolis vaupesianus Williams, 1982 -- valid -- Williams' Anole
  Anolis ventrimaculatus Boulenger, 1911 -- valid -- Speckled Anole
  Anolis vermiculatus Cocteau in A. M. C. Duméril and Bibron, 1837 -- valid -- Vinales Anole
  Anolis vescus Garrido and Hedges, 1992 -- valid -- Purial Bush Anole
  Anolis vicarius Williams, 1986 -- valid
  Anolis villai Fitch and Henderson, 1976 -- valid -- Country Anole
  Anolis viridius G. Köhler and Hedges, 2016 -- valid
  Anolis vittigerus Cope, 1862 -- valid -- Garland Anole
  Anolis wampuensis (McCranie and G. Köhler, 2001) -- valid
  Anolis wattsii Boulenger, 1894 -- valid -- Watts' Anole
  Anolis websteri Arnold, 1980 -- valid -- Webster's Anole
  Anolis wellbornae Ahl, 1940 -- valid
  Anolis wermuthi (G. Köhler and Obermeier, 1998) -- valid -- Wermuth's Anole
  Anolis whitemani Williams, 1963 -- valid -- Pallid Stout Anole, Whiteman's Anole
  Anolis whitemani lapidosus Schwartz, 1980 -- valid
  Anolis whitemani whitemani Williams, 1963 -- valid
  Anolis williamsii Bocourt, 1870 -- valid
  Anolis williamsmittermeierorum Poe and Yañez-Miranda, 2007 -- valid -- Williams-Mittermeier Anole
  Anolis wilsoni (G. Köhler, Townsend and Petersen, 2016) -- valid
  Anolis woodi Dunn, 1940 -- valid -- Wood's Anole
  Anolis yoroensis McCranie, Nicholson and G. Köhler, 2001 -- valid
  Anolis zapotecorum G. Köhler, Gómez Trejo Pérez, Petersen and Méndez de La Cruz, 2014 -- valid
  Anolis zeus (G. Köhler and McCranie, 2001) -- valid
  Anoplodipsas viridis Peters, 1869 -- invalid
  Anoplohydrus Werner, 1909 -- valid
  Anoplohydrus aemulans Werner, 1909 -- valid
  Antaioserpens albiceps (Boulenger, 1898) -- valid -- North-eastern Plain-nosed Burrowing Snake, Robust Burrowing Snake
  Antaioserpens warro (De Vis, 1884) -- valid -- Warrego Burrowing Snake
  Aparallactinae Bourgeois, 1968 -- valid
  Aparallactus bocagii Boulenger, 1895 -- invalid
  Aparallactus capensis A. Smith, 1849 -- valid -- Cape Centipede Eater
  Aparallactus capensis bocagei Boulenger, 1895 -- valid
  Aparallactus capensis capensis A. Smith, 1849 -- valid
  Aparallactus capensis luebberti Sternfeld, 1910 -- invalid
  Aparallactus capensis punctatolineatus Boulenger, 1895 -- valid
  Aparallactus guentheri Boulenger, 1895 -- valid -- Black Centipede Eater
  Aparallactus jacksonii (Günther, 1888) -- valid -- Jackson's Centipede-eater
  Aparallactus lineatus (Peters, 1870) -- valid -- Lined Centipede-eater
  Aparallactus lunulatus (Peters, 1854) -- valid -- Plumbeous Centipede Eater, Reticulated Centipede Eater
  Aparallactus lunulatus lunulatus (Peters, 1854) -- valid
  Aparallactus lunulatus nigrocollaris Chabanaud, 1916 -- valid
  Aparallactus lunulatus scortecci Parker, 1949 -- valid
  Aparallactus modestus (Günther, 1859) -- valid -- Western Forest Centipede-eater
  Aparallactus modestus modestus (Günther, 1859) -- valid
  Aparallactus modestus ubangensis Boulenger, 1897 -- valid
  Aparallactus moeruensis de Witte and Laurent, 1943 -- valid -- Zaire Centipede-eater
  Aparallactus niger Boulenger, 1897 -- valid
  Aparallactus nigriceps (Peters, 1854) -- valid -- Mozambique Centipede Eater
  Aparallactus nigrocollaris Chabanaud, 1916 -- invalid
  Aparallactus punctatolineatus Boulenger, 1895 -- invalid
  Aparallactus turneri Loveridge, 1935 -- valid -- Malindi Centipede-eater
  Aparallactus ubangensis Boulenger, 1897 -- invalid
  Aparallactus werneri Boulenger, 1895 -- valid -- Usambara Centipede-eater
  Aphaniotis W. C. H. Peters, 1864 -- valid
  Aphaniotis acutirostris Modigliani, 1889 -- valid -- Indonesia Earless Agama
  Aphaniotis fusca (W. C. H. Peters, 1864) -- valid -- Dusky Earless Agama
  Aphaniotis ornata (Lidth de Jeude, 1893) -- valid -- Ornate Earless Agama
  Apistocalamus grandis Boulenger, 1914 -- invalid
  Apistocalamus loriae Boulenger, 1898 -- invalid
  Aplopeltura boa (H. Boie, 1828) -- valid -- Blunt-headed Slug Eating Snake, Blunthead Slug Snake
  Aporophis coralliventris Boulenger, 1894 -- invalid
  Aporophis cyanopleurus Cope, 1885 -- invalid
  Aporophis juliae Cope, 1879 -- invalid
  Aporophis lineatus meridionalis Schenkel, 1901 -- invalid
  Apostolepis albicollaris de Lema, 2002 -- valid
  Apostolepis ambiniger (Peters, 1869) -- valid
  Apostolepis ammodites Ferrarezzi, Erritto Barbo and España Albuquerque, 2005 -- valid
  Apostolepis arenaria Rodrigues, 1993 -- valid
  Apostolepis assimilis (Reinhardt, 1861) -- valid -- Reinhardt's Burrowing Snake
  Apostolepis borellii Peracca, 1904 -- valid
  Apostolepis breviceps Harvey, Gonzales and Scrocchi, 2001 -- valid
  Apostolepis cearensis Gomes, 1915 -- valid -- Gomes' Burrowing Snake
  Apostolepis cerradoensis de Lema, 2003 -- valid
  Apostolepis christineae de Lema, 2002 -- valid
  Apostolepis dimidiata (Jan, 1862) -- valid
  Apostolepis dorbignyi (Schlegel, 1837) -- valid -- Bolivian Burrowing Snake
  Apostolepis erythronotus lineatus Cope, 1887 -- invalid
  Apostolepis flavotorquata (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Central Burrowing Snake
  Apostolepis gaboi Rodrigues, 1993 -- valid
  Apostolepis gerardi Boulenger, 1913 -- invalid
  Apostolepis goiasensis Prado, 1942 -- valid -- Goias Burrowing Snake
  Apostolepis intermedia Koslowsky, 1898 -- valid -- Mato Grosso Burrowing Snake
  Apostolepis lineata Cope, 1887 -- valid
  Apostolepis longicaudata Gomes, 1921 -- valid -- Longhead Burrowing Snake
  Apostolepis multicincta Harvey, 1999 -- valid
  Apostolepis nelsonjorgei de Lema and Renner, 2004 -- valid
  Apostolepis niceforoi Amaral, 1935 -- valid -- Amazon Burrowing Snake
  Apostolepis nigrolineata (Peters, 1869) -- valid
  Apostolepis nigroterminata Boulenger, 1896 -- valid -- Peru Burrowing Snake
  Apostolepis phillipsae Harvey, 1999 -- valid
  Apostolepis polylepis Amaral, 1921 -- valid
  Apostolepis pymi Boulenger, 1903 -- valid
  Apostolepis quirogai Giraudo and Scrocchi, 1998 -- valid
  Apostolepis serrana de Lema and Renner, 2006 -- valid
  Apostolepis striata de Lema, 2004 -- valid
  Apostolepis tenuis Ruthven, 1927 -- valid -- Ruthven's Burrowing Snake
  Apostolepis tertulianobeui de Lema, 2004 -- valid
  Apostolepis vittata (Cope, 1887) -- valid
  Aprosdoketophis andreonei Wallach, Lanza and Nistri, 2010 -- valid
  Archaius Gray, 1865 -- valid
  Archaius tigris (Kuhl, 1820) -- valid
  Archelaphe bella (Stanley, 1917) -- valid -- Bella Rat Snake, Burmese Rat Snake
  Archelaphe bella bella (Stanley, 1917) -- valid
  Archelaphe bella chapaensis (Bourret, 1934) -- valid
  Argyrogena fasciolata (Shaw, 1802) -- valid -- Banded Racer
  Argyrogena vittacaudata (Blyth, 1854) -- valid
  Arizona elegans Kennicott in Baird, 1859 -- valid -- Glossy Snake, Culebra brillante
  Arizona elegans arenicola Dixon, 1960 -- valid -- Texas Glossy Snake
  Arizona elegans candida Klauber, 1946 -- valid -- Mojave Glossy Snake, Mohave Glossy Snake
  Arizona elegans eburnata Klauber, 1946 -- valid -- Desert Glossy Snake
  Arizona elegans elegans Kennicott in Baird, 1859 -- valid -- Kansas Glossy Snake, Eastern Glossy Snake
  Arizona elegans expolita Klauber, 1946 -- valid
  Arizona elegans noctivaga Klauber, 1946 -- valid -- Arizona Glossy Snake
  Arizona elegans occidentalis Blanchard, 1924 -- valid -- Western Glossy Snake, Painted Desert Glossy Snake, California Glossy Snake
  Arizona elegans philipi Klauber, 1946 -- valid -- Painted Desert Glossy Snake
  Arizona jani Cope, 1861 -- invalid
  Arizona lineaticollis Cope, 1861 -- invalid
  Arizona pacata Klauber, 1946 -- valid
  Arrhyton ainictum Schwartz and Garrido, 1981 -- valid -- Cuban Island Racer
  Arrhyton dolichura Werner, 1909 -- valid -- Habana Island Racer
  Arrhyton procerum Hedges and Garrido, 1992 -- valid -- Zapata Long-tailed Groundsnake
  Arrhyton redimitum (Cope, 1863) -- valid
  Arrhyton supernum Hedges and Garrido, 1992 -- valid -- Oriente Black Groundsnake
  Arrhyton taeniatum Günther, 1858 -- valid -- Günther's Island Racer
  Arrhyton tanyplectum Schwartz and Garrido, 1981 -- valid -- San Vincente Island Racer
  Arrhyton vittatum (Gundlach, 1861) -- valid -- Common Island Racer
  Aspidelaps lichtensteinii Jan, 1859 -- invalid
  Aspidelaps lubricus (Laurenti, 1768) -- valid -- Cape Coral Snake
  Aspidelaps lubricus cowlesi Bogert, 1940 -- valid -- Angolan Coral Snake
  Aspidelaps lubricus infuscatus Mertens, 1954 -- invalid -- Western Coral Snake
  Aspidelaps lubricus lubricus (Laurenti, 1768) -- valid -- Cape Coral Snake
  Aspidelaps scutatus (A. Smith, 1849) -- valid -- Shield-nose Snake
  Aspidelaps scutatus fulafulus (Bianconi, 1849) -- valid -- Eastern Shield Cobra, Eastern Shield-nose Snake
  Aspidelaps scutatus intermedius Broadley, 1968 -- valid -- Intermediate Shield-nose Snake
  Aspidelaps scutatus scutatus (A. Smith, 1849) -- valid -- Shield-nose Snake
  Aspidomorphus lineaticollis (Werner, 1903) -- valid -- Striped Crown Snake
  Aspidomorphus muelleri (Schlegel, 1837) -- valid -- Müller's Crown Snake
  Aspidomorphus muelleri interruptus Brongersma, 1934 -- valid
  Aspidomorphus muelleri lineatus Brongersma, 1934 -- valid
  Aspidomorphus muelleri muelleri (Schlegel, 1837) -- valid
  Aspidomorphus schlegelii (Günther, 1872) -- valid -- Schlegel's Crown Snake
  Aspidura Wagler, 1830 -- valid
  Aspidura brachyorrhos (F. Boie, 1827) -- valid -- Boie's Rough-sided Snake
  Aspidura ceylonensis (Günther, 1858) -- valid -- Ceylon Keelback
  Aspidura copei Günther, 1864 -- invalid
  Aspidura deraniyagalae Gans and Fetcho, 1982 -- valid -- Sri Lanka Rough-sided Snake
  Aspidura drummondhayi Boulenger, 1904 -- valid -- Drummond-Hay's Rough-sided Snake
  Aspidura guentheri Ferguson, 1876 -- valid -- Günther's Rough-sided Snake
  Aspidura trachyprocta Cope, 1860 -- valid -- Common Rough-sided Snake
  Aspis intestinalis Laurenti, 1768 -- invalid
  Asthenodipsas laevis (F. Boie, 1827) -- valid -- Smooth Slug Snake
  Asthenodipsas lasgalenensis Loredo, Wood, Quah, Anuar, Greer, Ahmad and Grismer, 2013 -- valid -- Mirkwood Forest Slug Snake
  Asthenodipsas malaccanus Peters, 1864 -- valid -- Malayan Slug Snake
  Asthenodipsas tropidonotus (Lidth de Jeude, 1923) -- valid -- Sumatra Slug Snake
  Asthenodipsas vertebralis (Boulenger, 1900) -- valid -- Asian Slug Snake, Mountain Snail Snake
  Asthenophis ruspolii Boulenger, 1896 -- invalid
  Atheris acuminata Broadley, 1998 -- valid -- Acuminate Bush Viper
  Atheris anisolepis Mocquard, 1887 -- valid -- Mayombe Bush-Viper
  Atheris barbouri Loveridge, 1930 -- valid -- Uzungwe Mountain Bush Viper
  Atheris broadleyi Lawson, 1999 -- valid
  Atheris ceratophora Werner, 1896 -- valid
  Atheris chlorechis (Pel, 1851) -- valid
  Atheris desaixi Ashe, 1968 -- valid -- Ashe's Bush Viper
  Atheris hirsuta Ernst and Rödel, 2002 -- valid
  Atheris hispida Laurent, 1955 -- valid -- African Hairy Bush Viper
  Atheris katangensis de Witte, 1953 -- valid -- Katanga Mountain Bush Viper
  Atheris mabuensis Branch and Bayliss, 2009 -- valid
  Atheris matildae Menegon, Davenport and Howell, 2011 -- valid -- Matilda's Horned Viper
  Atheris nitschei Tornier, 1902 -- valid -- Great Lakes Bush Viper
  Atheris nitschei rungweensis Bogert, 1940 -- invalid
  Atheris rungweensis Bogert, 1940 -- valid -- Mt. Rungwe Bush Viper
  Atheris squamigera (Hallowell, 1854) -- valid -- Variable Bush Viper, African Bush Viper, Rough-scaled Bush Viper
  Atheris squamigera robusta Laurent, 1956 -- invalid
  Atheris squamigera squamigera (Hallowell, 1854) -- invalid
  Atheris subocularis Fischer, 1888 -- valid
  Atractaspidinae Günther, 1858 -- valid
  Atractaspis andersonii Boulenger, 1905 -- valid -- Arabian Small-Scaled Burrowing Asp
  Atractaspis aterrima Günther, 1863 -- valid -- Slender Burrowing Asp, Mole Viper
  Atractaspis battersbyi de Witte, 1959 -- valid -- Battersby's Burrowing Asp, Battersby's Mole Viper
  Atractaspis bibronii A. Smith, 1849 -- valid -- Southern Burrowing Asp, Bibron's Burrowing Asp
  Atractaspis bibronii bibronii A. Smith, 1849 -- valid
  Atractaspis bibronii rostrata Günther, 1868 -- valid
  Atractaspis bipostocularis Boulenger, 1905 -- invalid
  Atractaspis boulengeri Mocquard, 1897 -- valid -- Mole Viper
  Atractaspis boulengeri boulengeri Mocquard, 1897 -- valid
  Atractaspis boulengeri matschiensis Werner, 1897 -- valid
  Atractaspis boulengeri mixta Laurent, 1945 -- valid
  Atractaspis boulengeri schmidti Laurent, 1945 -- valid
  Atractaspis boulengeri schultzei Sternfeld, 1917 -- valid
  Atractaspis boulengeri vanderborghti Laurent, 1956 -- valid
  Atractaspis congica Peters, 1877 -- valid -- Congo Stiletto Snake
  Atractaspis congica congica Peters, 1877 -- valid
  Atractaspis congica leleupi Laurent, 1950 -- valid
  Atractaspis congica orientalis Laurent, 1945 -- valid
  Atractaspis corpulenta (Hallowell, 1854) -- valid -- Mole Viper
  Atractaspis corpulenta corpulenta (Hallowell, 1854) -- valid
  Atractaspis corpulenta kivuensis Laurent, 1958 -- valid
  Atractaspis corpulenta leucura Mocquard, 1885 -- valid
  Atractaspis dahomeyensis Bocage, 1887 -- valid -- Mole Viper
  Atractaspis duerdeni Gough, 1907 -- valid -- Duerden's Asp, Beaked Burrowing Asp, Duerden's Burrowing Asp
  Atractaspis engaddensis Haas, 1950 -- valid -- Israeli Mole Viper
  Atractaspis engdahli Lönnberg and Andersson, 1913 -- valid -- Mole Viper
  Atractaspis fallax Peters, 1867 -- valid -- Peters' Burrowing Asp
  Atractaspis heterochilus Boulenger, 1901 -- invalid
  Atractaspis hildebrandtii Peters, 1877 -- invalid
  Atractaspis irregularis (Reinhardt, 1843) -- valid -- Variable Burrowing Asp
  Atractaspis irregularis angeli Laurent, 1950 -- valid
  Atractaspis irregularis bipostocularis Boulenger, 1905 -- valid
  Atractaspis irregularis irregularis (Reinhardt, 1843) -- valid
  Atractaspis irregularis parkeri Laurent, 1945 -- valid
  Atractaspis irregularis uelensis Laurent, 1945 -- valid
  Atractaspis leucomelas Boulenger, 1895 -- valid -- Ogaden Burrowing Asp
  Atractaspis leucura Mocquard, 1885 -- invalid
  Atractaspis magrettii Scortecci, 1928 -- valid -- Magretti's Burrowing Asp
  Atractaspis matschiensis Werner, 1897 -- invalid
  Atractaspis microlepidota Günther, 1866 -- valid -- Small-Scaled Burrowing Asp
  Atractaspis micropholis Günther, 1872 -- valid -- Sahelian Burrowing Asp
  Atractaspis phillipsi Barbour, 1913 -- valid -- Phillips' Burrowing Asp
  Atractaspis reticulata Sjöstedt, 1896 -- valid -- Mole Viper
  Atractaspis reticulata brieni Laurent, 1956 -- valid
  Atractaspis reticulata heterochilus Boulenger, 1901 -- valid
  Atractaspis reticulata reticulata Sjöstedt, 1896 -- valid
  Atractaspis schultzei Sternfeld, 1917 -- invalid
  Atractaspis scorteccii Parker, 1949 -- valid -- Somali Burrowing Asp
  Atractaspis watsoni Boulenger, 1908 -- valid -- Watson's Burrowing Asp
  Atractus acheronius Passos, Rivas and Barrio-Amorós, 2009 -- valid
  Atractus albuquerquei da Cunha and Nascimento, 1983 -- valid -- Albuquerque Ground Snake
  Atractus alphonsehogei da Cunha and Nascimento, 1983 -- valid -- Alphonse's Ground Snake
  Atractus altagratiae Passos and Fernandes, 2008 -- valid
  Atractus alytogrammus Köhler and Kieckbusch, 2014 -- valid
  Atractus andinus Prado, 1944 -- valid -- Andean Ground Snake
  Atractus apophis Passos and Lynch, 2010 -- valid
  Atractus arangoi Prado, 1939 -- valid
  Atractus atratus Passos and Lynch, 2010 -- valid
  Atractus attenuates Myers and Schargel, 2006 -- valid
  Atractus avernus Passos, Chiesse, Torres-Carvajal and Savage, 2009 -- valid
  Atractus ayeush Esqueda, 2011 -- valid
  Atractus badius (F. Boie, 1827) -- valid -- Boie's Ground Snake, French Guyana Ground Snake
  Atractus balzani Boulenger, 1898 -- valid -- Bolivian Ground Snake
  Atractus biseriatus Prado, 1941 -- valid -- Two-lined Ground Snake
  Atractus bocki Werner, 1909 -- valid -- Bock's Ground Snake
  Atractus bocourti Boulenger, 1894 -- valid -- Bocourt's Ground Snake
  Atractus boettgeri Boulenger, 1896 -- valid -- Boettger's Ground Snake
  Atractus boimirim Passos, Prudente and Lynch, 2016 -- valid
  Atractus boulengerii Peracca, 1896 -- valid
  Atractus caete Passos, Fernandes, Bérnils and Moura-Leite, 2010 -- valid
  Atractus careolepis Köhler and Kieckbusch, 2014 -- valid
  Atractus carrioni Parker, 1930 -- valid -- Parker's Ground Snake
  Atractus caxiuana Da Costa Prudente and Santos-Costa, 2006 -- valid
  Atractus charitoae Silva Haad, 2004 -- valid
  Atractus chthonius Passos and Lynch, 2010 -- valid
  Atractus clarki Dunn and Bailey, 1939 -- valid -- Clark's Ground Snake
  Atractus collaris Peracca, 1897 -- valid -- Collared Ground Snake
  Atractus crassicaudatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Thickhead Ground Snake
  Atractus darienensis Myers, 2003 -- valid
  Atractus depressiocellus Myers, 2003 -- valid
  Atractus duboisi (Boulenger, 1880) -- valid
  Atractus duidensis Roze, 1961 -- valid -- Venezuela Ground Snake
  Atractus dunni Savage, 1955 -- valid -- Dunn's Ground Snake
  Atractus echidna Passos, Mueses-Cisneros, Lynch and Fernandes, 2009 -- valid
  Atractus ecuadorensis Savage, 1955 -- valid -- Ecuadorean Ground Snake, Ecuadorian Ground Snake
  Atractus edioi Da Silva, Rodrigues Silva, Ribeiro, Souza and Do Amaral Souza, 2005 -- valid
  Atractus elaps (Günther, 1858) -- valid -- Black Ground Snake
  Atractus emigdioi Gonzales-Sponga, 1971 -- valid -- Emigdio's Ground Snake
  Atractus emmeli (Boettger, 1888) -- valid -- Emmel's Ground Snake
  Atractus eriki Esqueda, la Marca and Bazó, 2007 -- valid
  Atractus erythromelas Boulenger, 1903 -- valid -- Red-black Ground Snake
  Atractus favae (Filippi, 1840) -- valid -- Filippi's Ground Snake
  Atractus flammigerus (F. Boie, 1827) -- valid -- Flaming Ground Snake
  Atractus flammigerus snethlageae da Cunha and Nascimento, 1983 -- invalid
  Atractus franciscopaivai Silva Haad, 2004 -- valid
  Atractus francoi Passos, Fernandes, Bérnils and Moura-Leite, 2010 -- valid
  Atractus fuliginosus (Hallowell, 1845) -- valid -- Hallowell's Ground Snake
  Atractus gaigeae Savage, 1955 -- valid -- Gaige's Ground Snake
  Atractus gigas Myers and Schargel, 2006 -- valid
  Atractus guentheri (Wucherer, 1861) -- valid -- Günther's Ground Snake
  Atractus heliobelluomini Silva Haad, 2004 -- valid
  Atractus heyeri Esqueda and McDiarmid, 2015 -- valid
  Atractus hoogmoedi Prudente and Passos, 2010 -- valid
  Atractus hostilitractus Myers, 2003 -- valid
  Atractus imperfectus Myers, 2003 -- valid
  Atractus indistinctus Prado, 1940 -- valid -- Indistinct Ground Snake
  Atractus insipidus Roze, 1961 -- valid
  Atractus iridescens Peracca, 1896 -- valid -- Iridescent Ground Snake
  Atractus isthmicus Boulenger, 1894 -- invalid
  Atractus lancinii Roze, 1961 -- valid -- Lancini's Ground Snake
  Atractus lasallei Amaral, 1931 -- valid -- Lasalle's Ground Snake
  Atractus latifrons (Günther, 1868) -- valid -- Broadhead Ground Snake
  Atractus lehmanni Boettger, 1898 -- valid -- Lehmann's Ground Snake
  Atractus limitaneus (Amaral, 1935) -- valid -- Limitan Ground Snake
  Atractus loveridgei Amaral, 1930 -- valid -- Loveridge's Ground Snake
  Atractus macondo Passos, Lynch and Fernandes, 2009 -- valid
  Atractus maculatus (Günther, 1858) -- valid -- Spotted Ground Snake
  Atractus major Boulenger, 1894 -- valid -- Brown Ground Snake, Big Ground Snake
  Atractus manizalesensis Prado, 1940 -- valid
  Atractus mariselae Lancini, 1969 -- valid -- Marisela's Ground Snake
  Atractus matthewi Markezich and Barrio-Amorós, 2004 -- valid
  Atractus medusa Passos, Mueses-Cisneros, Lynch and Fernandes, 2009 -- valid
  Atractus melanogaster Werner, 1916 -- valid -- Blackbelly Ground Snake
  Atractus melas Boulenger, 1908 -- valid -- Dark Ground Snake
  Atractus meridensis Esqueda and la Marca, 2005 -- valid
  Atractus micheleae Esqueda and la Marca, 2005 -- valid
  Atractus microrhynchus (Cope, 1868) -- valid
  Atractus mijaresi Esqueda and la Marca, 2005 -- valid
  Atractus modestus Boulenger, 1894 -- valid -- Modest Ground Snake
  Atractus multicinctus (Jan, 1865) -- valid -- Banded Ground Snake
  Atractus multidentatus Passos, Rivas and Barrio-Amorós, 2009 -- valid
  Atractus nasutus Passos, Fernandes and Lynch, 2009 -- valid
  Atractus natans Hoogmoed and Prudente, 2003 -- valid
  Atractus nicefori Amaral, 1930 -- valid -- Northern Ground Snake
  Atractus nigricaudus Schmidt and Walker, 1943 -- valid -- Black-headed Ground Snake
  Atractus nigriventris Amaral, 1933 -- valid -- Black-ventered Ground Snake
  Atractus obesus Marx, 1960 -- valid -- Fat Ground Snake
  Atractus obtusirostris Werner, 1916 -- valid -- Bignose Ground Snake
  Atractus occidentalis Savage, 1955 -- valid -- Western Ground Snake
  Atractus occipitoalbus (Jan, 1862) -- valid -- Gray Ground Snake
  Atractus ochrosetrus Esqueda and la Marca, 2005 -- valid
  Atractus oculotemporalis Amaral, 1932 -- valid -- Hispanic Ground Snake
  Atractus orcesi Savage, 1955 -- valid
  Atractus paisa Passos, Fernandes and Lynch, 2009 -- valid
  Atractus pamplonensis Amaral, 1937 -- valid -- Pamplona Ground Snake
  Atractus pantostictus Fernandes and Puorto, 1993 -- valid
  Atractus paraguayensis Werner, 1924 -- valid
  Atractus paravertebralis Henle and Ehrl, 1991 -- valid
  Atractus paucidens Despax, 1910 -- valid -- Despax's Ground Snake
  Atractus pauciscutatus Schmidt and Walker, 1943 -- valid -- Little-scaled Ground Snake
  Atractus peruvianus (Jan, 1862) -- valid -- Peru Ground Snake
  Atractus poeppigi (Jan, 1862) -- valid -- Basin Ground Snake
  Atractus potschi Fernandes, 1995 -- valid
  Atractus punctiventris Amaral, 1933 -- valid -- Pointed Ground Snake
  Atractus resplendens Werner, 1901 -- valid -- Resplendent Ground Snake
  Atractus reticulatus (Boulenger, 1885) -- valid -- Reticulate Ground Snake
  Atractus reticulatus reticulatus (Boulenger, 1885) -- valid
  Atractus reticulatus scrocchii Alvarez, Rey and Cei, 1992 -- valid
  Atractus riveroi Roze, 1961 -- valid -- Rivero's Ground Snake
  Atractus ronnie Passos, Fernandes and Borges-Nojosa, 2007 -- valid
  Atractus roulei Despax, 1910 -- valid -- Roule's Ground Snake
  Atractus sanctaemartae Dunn, 1946 -- valid -- St. Marta's Ground Snake
  Atractus sanguineus Prado, 1944 -- valid -- Bloody Ground Snake
  Atractus savagei Salazar-Valenzuela, Torres-Carvajal and Passos, 2014 -- valid -- Savage's Groundsnake
  Atractus schach (F. Boie, 1827) -- valid -- Schach's Ground Snake
  Atractus serranus Amaral, 1930 -- valid -- Sao Paulo Ground Snake
  Atractus snethlageae da Cunha and Nascimento, 1983 -- valid
  Atractus spinalis Passos, Texeira Jr., Recoder, De Sena, Dal Vechio, De Arruda Pinto et al., 2013 -- valid
  Atractus steyermarki Roze, 1958 -- valid
  Atractus surucucu Prudente, 2008 -- valid
  Atractus taeniatus Griffin, 1916 -- valid
  Atractus tamaensis Esqueda and la Marca, 2005 -- valid
  Atractus tamessari Kok, 2006 -- valid
  Atractus taphorni Schargel and García-Pérez, 2002 -- valid
  Atractus tartarus Passos, Prudente and Lynch, 2016 -- valid
  Atractus thalesdelemai Passos, Fernandes and Zanella, 2005 -- valid
  Atractus titanicus Passos, Fernandes and Lynch, 2009 -- valid
  Atractus torquatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Neckband Ground Snake
  Atractus torquatus resplendens Werner, 1901 -- invalid
  Atractus touzeti Schargel, Lamar, Passos, Valencia, Cisneros-Hereda and Campbell, 2013 -- valid
  Atractus trihedrurus Amaral, 1926 -- valid -- Southern Ground Snake
  Atractus trilineatus Wagler, 1828 -- valid -- Three-lined Ground Snake
  Atractus trivittatus Amaral, 1933 -- valid -- Three-banded Ground Snake
  Atractus turikensis Barros, 2000 -- valid
  Atractus typhon Passos, Mueses-Cisneros, Lynch and Fernandes, 2009 -- valid
  Atractus variegatus Prado, 1942 -- valid -- Variegated Ground Snake
  Atractus ventrimaculatus Boulenger, 1905 -- valid -- Speckled Ground Snake
  Atractus vertebralis Boulenger, 1904 -- valid -- Vertebral Ground Snake
  Atractus vertebrolineatus Prado, 1941 -- valid -- Striped Ground Snake
  Atractus vittatus Boulenger, 1894 -- valid
  Atractus wagleri Prado, 1945 -- valid -- Wagler's Ground Snake
  Atractus werneri Peracca, 1912 -- valid -- Werner's Ground Snake
  Atractus zebrinus (Jan, 1862) -- valid
  Atractus zidoki Gasc and Rodrigues, 1979 -- valid -- Zidok's Ground Snake
  Atretium Cope, 1861 -- valid
  Atretium schistosum (Daudin, 1803) -- valid -- Split Keelback, Olive Keelback Wart Snake
  Atretium yunnanensis Anderson, 1879 -- valid -- Yunnan Olive Keelback
  Atropoides indomitus E. N. Smith and Ferrari-Castro, 2008 -- valid
  Atropoides mexicanus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Central American Jumping Pit Viper
  Atropoides nummifer (Rüppell, 1845) -- valid -- Nauyaca o nayaraca saltadora, Jumping Pit Viper
  Atropoides occiduus (Hoge, 1966) -- valid
  Atropoides olmec (Perez-Higareda, H. M. Smith and Julia-Zertuche, 1985) -- valid -- Nauyaca de Los Tuxtlas, Olmecan Pit Viper
  Atropoides picadoi (Dunn, 1939) -- valid -- Picado's Pit Viper
  Atropophis borneensis Peters, 1872 -- invalid
  Atropos mexicanus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Atropos nummifer Rüppell, 1845 -- invalid
  Aturia belcheri Gray, 1849 -- invalid
  Aturia elegans Gray, 1842 -- invalid
  Aturia lapemoides Gray, 1849 -- invalid
  Aturia ornata Gray, 1842 -- invalid
  Austrelaps labialis (Jan, 1859) -- valid -- Pygmy Copperhead
  Austrelaps ramsayi (Krefft, 1864) -- valid -- Highlands Copperhead
  Austrelaps superbus (Günther, 1858) -- valid -- Lowlands Copperhead, Copperhead Snake
  Azemiops feae Boulenger, 1888 -- valid -- Fea Viper, Black-headed Burmese Viper
  Azemiops kharini Orlov, Ryabov and T. T. Nguyen, 2013 -- valid -- White-headed Fea Viper, White-headed Burmese Viper
  Balanophis H. M. Smith, 1938 -- valid
  Balanophis ceylonensis (Günther, 1858) -- valid -- Sri Lankan Keelback Blossom Krait
  Bamanophis dorri (Lataste, 1888) -- valid
  Barbourina equatoriana Amaral, 1924 -- invalid
  Bascanion anthonyi Stejneger, 1901 -- invalid
  Bascanion foxii Baird and Girard, 1853 -- invalid
  Basiliscus basiliscus (Linnaeus, 1758) -- valid -- Common Basilisk
  Basiliscus basiliscus barbouri Ruthven, 1914 -- valid
  Basiliscus basiliscus basiliscus (Linnaeus, 1758) -- valid
  Basiliscus galeritus A. M. C. Duméril and A. H. A. Duméril, 1851 -- valid -- Western Basilisk
  Basiliscus plumifrons Cope, 1875 -- valid -- Green Basilisk
  Basiliscus vittatus Wiegmann, 1828 -- valid -- Brown Basilisk, Basilisco rayado
  Bergenia mexicana Steindachner, 1867 -- invalid
  Bitis albanica Hewitt, 1937 -- valid -- Albany Adder
  Bitis arietans (Merrem, 1820) -- valid -- Puff Adder
  Bitis arietans arietans (Merrem, 1820) -- valid
  Bitis arietans somalica Parker, 1949 -- valid
  Bitis armata (A. Smith, 1826) -- valid
  Bitis atropos (Linnaeus, 1758) -- valid -- Mountain Adder
  Bitis atropos atropos (Linnaeus, 1758) -- valid
  Bitis atropos unicolor Fitzsimons, 1959 -- valid
  Bitis caudalis (A. Smith, 1839) -- valid -- Horned Adder
  Bitis cornuta (Daudin, 1803) -- valid -- Many-horned Adder
  Bitis gabonica (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Gaboon Adder, Gaboon Viper
  Bitis heraldica (Bocage, 1889) -- valid -- Angolan Adder, Bocage's Horned Adder
  Bitis inornata (A. Smith, 1838) -- valid -- Plain Mountain Adder, Hornless Adder
  Bitis lachesis somalica Parker, 1949 -- invalid
  Bitis nasicornis (Shaw, 1802) -- valid -- Rhinoceros Viper
  Bitis parviocula Böhme, 1976 -- valid -- Bale Mountains Adder
  Bitis peringueyi (Boulenger, 1888) -- valid -- Dwarf Puff Adder, Peringuey's Adder
  Bitis rhinoceros (Schlegel, 1855) -- valid
  Bitis rubida Branch, 1997 -- valid
  Bitis schneideri (Boettger, 1886) -- valid -- Namaqua Dwarf Adder, Namaqua Puff Adder
  Bitis worthingtoni Parker, 1932 -- valid -- Kenya Horned Viper
  Bitis xeropaga Haacke, 1975 -- valid -- Desert Mountain Adder
  Blythia Theobold, 1868 -- valid
  Blythia reticulata (Blyth, 1854) -- valid -- Blyth's Reticulate Snake
  Boa antarctica Shaw and Nodder, 1802 -- invalid
  Boaedon capensis A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Brown House Snake
  Boaedon fuliginosus (F. Boie, 1827) -- valid -- Brown House Snake, African House Snake
  Boaedon fuliginosus fuliginosus (F. Boie, 1827) -- valid
  Boaedon fuliginosus mentalis Günther, 1888 -- valid
  Boaedon lemniscatum A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Boaedon lineatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Striped House Snake
  Boaedon littoralis Trape and Mediannikov, 2016 -- valid -- Coastal House Snake
  Boaedon longilineatus Trape and Mediannikov, 2016 -- valid -- Long-lined House Snake
  Boaedon maculatus Parker, 1932 -- valid -- Dotted House Snake, Somali House Snake
  Boaedon mentalis Günther, 1888 -- invalid
  Boaedon olivaceus (A. H. A. Duméril, 1856) -- valid -- Olive House Snake
  Boaedon paralineatus Trape and Mediannikov, 2016 -- valid -- Central-African Lined House Snake
  Boaedon perisilvestris Trape and Mediannikov, 2016 -- valid
  Boaedon radfordi Greenbaum, Portillo, Jackson and Kusamba, 2015 -- valid -- Radford's House Snake
  Boaedon subflavus Trape and Mediannikov, 2016 -- valid -- Yellow House Snake
  Boaedon upembae (Laurent, 1954) -- valid -- Eastern Congo White-bellied Water-Snake, Lined Water Snake
  Boaedon virgatus (Hallowell, 1854) -- valid -- Dark-bellied House Snake, Hallowell's House Snake
  Bogertophis rosaliae (Mocquard, 1899) -- valid -- Baja California Rat Snake, Baja California Ratsnake, Culebra-ratonera de Baja California
  Bogertophis subocularis (Brown, 1901) -- valid -- Trans-Pecos Rat Snake, Culebra-ratonera de Transpecos, Trans-Pecos Ratsnake
  Bogertophis subocularis amplinotus Webb, 1990 -- valid
  Bogertophis subocularis subocularis (Brown, 1901) -- valid -- Trans-Pecos Rat Snake, Northern Trans-Pecos Ratsnake
  Boiga andamanensis (Wall, 1909) -- valid -- Andaman Cat Snake
  Boiga angulata (W. C. H. Peters, 1861) -- valid -- Philippine Blunt-headed Cat Snake, Leyte Cat Snake
  Boiga barnesii (Günther, 1869) -- valid
  Boiga beddomei (Wall, 1909) -- valid -- Beddome's Cat Snake
  Boiga bengkuluensis Orlov, Kudryavtzev, Ryabov and Shumakov, 2003 -- valid
  Boiga bourreti Tillack, Ziegler and Khac Quyet, 2004 -- valid -- Bourret's Cat Snake
  Boiga ceylonensis (Günther, 1858) -- valid -- Sri Lanka Cat Snake
  Boiga cyanea (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Green Cat Snake
  Boiga cynodon (F. Boie, 1827) -- valid -- Dog-toothed Cat Snake
  Boiga dendrophila (F. Boie, 1827) -- valid -- Gold-ringed Cat Snake
  Boiga dendrophila annectens (Boulenger, 1896) -- valid
  Boiga dendrophila dendrophila (F. Boie, 1827) -- valid
  Boiga dendrophila divergens Taylor, 1922 -- valid
  Boiga dendrophila gemmicincta (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid
  Boiga dendrophila latifasciata (Boulenger, 1896) -- valid
  Boiga dendrophila levitoni Gaulke, Demegillo and Vogel, 2005 -- valid
  Boiga dendrophila melanota (Boulenger, 1896) -- valid
  Boiga dendrophila multicincta (Boulenger, 1896) -- valid
  Boiga dendrophila occidentalis Brongersma, 1934 -- valid
  Boiga dightoni (Boulenger, 1894) -- valid -- Pirmad Cat Snake
  Boiga drapiezii (H. Boie in F. Boie, 1827) -- valid -- White-spotted Cat Snake, Drapiez's Cat Snake
  Boiga flaviviridis Vogel and Ganesh, 2013 -- valid
  Boiga forsteni (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Forsten's Cat Snake
  Boiga gokool (Gray, 1835) -- valid -- Arrowback Tree Snake
  Boiga guangxiensis Wen, 1998 -- valid
  Boiga hoeseli Ramadhan, Iskandar and Subasri, 2010 -- valid -- Lesser Sundas Cat Snake
  Boiga irregularis (Bechstein, 1802) -- valid -- Brown Tree Snake, Brown Treesnake, Brown Cat Snake
  Boiga jaspidea (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Jasper Cat Snake
  Boiga kraepelini Stejneger, 1902 -- valid -- Kelung Cat Snake
  Boiga multifasciata (Blyth, 1861) -- valid -- Many-banded Tree Snake
  Boiga multomaculata (F. Boie, 1827) -- valid -- Many-spotted Cat Snake
  Boiga nigriceps (Günther, 1863) -- valid -- Black-headed Cat Snake
  Boiga nigriceps brevicauda M. A. Smith, 1926 -- valid
  Boiga nigriceps nigriceps (Günther, 1863) -- valid
  Boiga nuchalis (Günther, 1875) -- valid -- Collared Catsnake, Collared Cat Snake
  Boiga ochracea (Theobald, 1868) -- valid -- Tawny Cat Snake
  Boiga ochracea ochracea (Theobald, 1868) -- valid
  Boiga ochracea stoliczkae (Wall, 1909) -- valid
  Boiga ochracea walli M. A. Smith, 1943 -- valid
  Boiga philippina (Peters, 1867) -- valid -- Philippine Cat Snake
  Boiga quincunciata (Wall, 1908) -- valid
  Boiga saengsomi Nutaphand, 1985 -- valid -- Banded Cat Snake
  Boiga schultzei Taylor, 1923 -- valid -- Schultz's Blunt-headed Tree Snake
  Boiga siamensis Nutaphand, 1971 -- valid -- Eyed Cat Snake, Gray Cat Snake
  Boiga tanahjampeana Orlov and Ryabov, 2002 -- valid -- Tanahjampea Cat Snake
  Boiga trigonata (Schneider, 1802) -- valid -- Indian Gamma Snake, Common Cat Snake
  Boiga trigonata melanocephala (Annandale, 1904) -- valid
  Boiga trigonata trigonata (Schneider, 1802) -- valid
  Boiga wallachi Das, 1998 -- valid -- Nicobar Cat Snake
  Boiruna maculata (Boulenger, 1896) -- valid -- Mussurana
  Boiruna sertaneja Zaher, 1996 -- valid
  Boodon A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Boodon erlangeri Sternfeld, 1908 -- invalid
  Boodon mentalis Günther, 1888 -- invalid
  Borikenophis portoricensis (Reinhardt and Lütken, 1862) -- valid -- Puerto Rican Racer
  Borikenophis portoricensis anegadae (Barbour, 1917) -- valid
  Borikenophis portoricensis aphantus (Schwartz, 1966) -- valid
  Borikenophis portoricensis nicholsi (Grant, 1937) -- valid
  Borikenophis portoricensis portoricensis (Reinhardt and Lütken, 1862) -- valid
  Borikenophis portoricensis prymnus (Schwartz, 1966) -- valid
  Borikenophis portoricensis richardi (Grant, 1946) -- valid
  Borikenophis sanctaecrucis (Cope, 1862) -- invalid
  Borikenophis variegatus (Schmidt, 1926) -- valid -- Puerto Rican Racer
  Bothriechis aurifer (Salvin, 1860) -- valid -- Nauyaca-de árbol manchas amarillas, Yellow-blotched Palm Pit Viper
  Bothriechis bicolor (Bocourt, 1868) -- valid -- Nauyaca-de árbol bicolor, Guatemala Palm Pit Viper
  Bothriechis godmanni Günther, 1863 -- invalid
  Bothriechis guifarroi Townsend, Medina-Flores, Wilson, Jadin and Austin, 2013 -- valid
  Bothriechis lateralis Peters, 1862 -- valid -- Coffee Palm Viper
  Bothriechis marchi (Barbour and Loveridge, 1929) -- valid -- March's Palm Pit Viper
  Bothriechis nigroviridis Peters, 1859 -- valid -- Black-speckled Palm Pit Viper
  Bothriechis nubestris Doan, Mason, Castoe, Sasa and Parkinson, 2016 -- valid -- Talamancan Palm-Pitviper
  Bothriechis rowleyi (Bogert, 1968) -- valid -- Nauyaca-de árbol de Rowley, Rowley's Palm Pit Viper
  Bothriechis schlegelii (Berthold, 1846) -- valid -- Eyelash Viper
  Bothriechis supraciliaris (Taylor, 1954) -- valid -- Blotched Palm-pitviper
  Bothriechis thalassinus Campbell and H. M. Smith, 2000 -- valid
  Bothriopsis Peters, 1861 -- invalid
  Bothriopsis chloromelas (Boulenger, 1912) -- invalid
  Bothriopsis peruviana (Boulenger, 1903) -- invalid -- Peru Forest Pit Viper
  Bothrocophias andianus (Amaral, 1923) -- valid -- Andean Lancehead
  Bothrocophias campbelli (Freire-Lascano, 1991) -- valid
  Bothrocophias colombianus (Rendahl and Vestergren, 1940) -- valid -- Colombian Lancehead, Munchique's Rufous Lancehead
  Bothrocophias hyoprora (Amaral, 1935) -- valid -- Hognose Lancehead
  Bothrocophias microphthalmus (Cope, 1875) -- valid
  Bothrocophias myersi Gutberlet and Campbell, 2001 -- valid
  Bothrolycus ater Günther, 1874 -- valid -- Günther's Black Snake
  Bothrophthalmus brunneus Günther, 1863 -- valid
  Bothrophthalmus lineatus (Peters, 1863) -- valid -- Red-black Striped Snake
  Bothrops acrochordus Garcia, 1896 -- invalid
  Bothrops alcatraz Marques, Martins and Sazima, 2002 -- valid -- Alcatrazes Lancehead
  Bothrops alternatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Urutu
  Bothrops ammodytoides Leybold, 1873 -- valid -- Yararanata
  Bothrops asper (Garman, 1883) -- valid -- Nauyaca-terciopelo real, Terciopelo, Terciopelo
  Bothrops atrox (Linnaeus, 1758) -- valid -- Fer-de-Lance, Common Lancehead, Barba Amarilla
  Bothrops ayerbei Folleco-Fernandez, 2010 -- valid -- Ayerbe's Lancehead
  Bothrops barnetti Parker, 1938 -- valid -- Barnett's Lancehead
  Bothrops bicolor Bocourt, 1868 -- invalid
  Bothrops bilineatus (Wied-Neuwied, 1821) -- valid -- Green Jararaca
  Bothrops bilineatus bilineatus (Wied-Neuwied, 1821) -- valid
  Bothrops bilineatus smaragdinus Hoge, 1966 -- valid
  Bothrops brazili Hoge, 1954 -- valid -- Brazil's Lancehead
  Bothrops caribbaeus (Garman, 1887) -- valid -- Saint Lucia Viper
  Bothrops chloromelas (Boulenger, 1912) -- valid
  Bothrops cotiara (Gomes, 1913) -- valid
  Bothrops diporus Cope, 1862 -- valid
  Bothrops erythromelas Amaral, 1923 -- valid -- Caatinga Lancehead
  Bothrops flavoviridis Hallowell, 1861 -- invalid
  Bothrops fonsecai Hoge and Belluomini, 1959 -- valid -- Fonseca's Lancehead
  Bothrops hageni Van Lidth de Jeude, 1886 -- invalid
  Bothrops hesperis Campbell, 1976 -- invalid
  Bothrops insularis (Amaral, 1921) -- valid -- Golden Lancehead
  Bothrops isabelae Sandner-Montilla, 1979 -- invalid
  Bothrops itapetiningae (Boulenger, 1907) -- valid -- Sao Paulo Lancehead
  Bothrops jararaca (Wied-Neuwied, 1824) -- valid
  Bothrops jararacussu Lacerda, 1884 -- valid
  Bothrops jonathani Harvey, 1994 -- valid -- Jonathan's Lancehead
  Bothrops lanceolatus (Bonnaterre, 1790) -- valid -- Martinique Lancehead
  Bothrops lansbergi hutmanni Sandner-Montilla, 1989 -- invalid
  Bothrops lansbergii rozei Peters, 1968 -- invalid
  Bothrops leucurus Wagler, 1824 -- valid -- Whitetail Lancehead
  Bothrops lichenosa Roze, 1958 -- invalid
  Bothrops lojanus Parker, 1930 -- valid -- Lojan Lancehead
  Bothrops lutzi (Miranda-Ribeiro, 1915) -- valid
  Bothrops marajoensis Hoge, 1966 -- valid -- Marajó Lancehead
  Bothrops marmoratus da Silva and Rodrigues, 2008 -- valid -- Marbled lancehead
  Bothrops matogrossensis Amaral, 1925 -- valid
  Bothrops medusa (Sternfeld, 1920) -- valid -- Venezuela Forest Pit Viper
  Bothrops microphthalmus colombianus Rendahl and Vestergren, 1940 -- invalid
  Bothrops moojeni Hoge, 1966 -- valid -- Brazilian Lancehead
  Bothrops muriciensis Ferrarezzi and Freire, 2001 -- valid
  Bothrops neuwiedi Wagler, 1824 -- valid -- Jararaca Pintada
  Bothrops neuwiedi matogrossensis Amaral, 1925 -- invalid
  Bothrops nigroviridis marchi Barbour and Loveridge, 1929 -- invalid
  Bothrops nummifer occiduus Hoge, 1966 -- invalid
  Bothrops oligolepis (Werner, 1901) -- valid -- Inca Forest Pit Viper
  Bothrops osbornei Freire-Lascano, 1991 -- valid
  Bothrops otavioi Barbo, Grazziotin, Sazima, Martins and Sawaya, 2012 -- valid
  Bothrops pauloensis Amaral, 1925 -- valid
  Bothrops pictus (Tschudi, 1845) -- valid -- Desert Lancehead
  Bothrops pirajai Amaral, 1923 -- valid -- Piraja's Lancehead
  Bothrops pradoi (Hoge, 1948) -- invalid
  Bothrops pubescens (Cope, 1870) -- valid
  Bothrops pulchra (Peters, 1862) -- valid
  Bothrops punctatus (Garcia, 1896) -- valid -- Golden Lancehead, Chocoan Forest Pit Viper
  Bothrops rhombeatus Garcia, 1896 -- valid -- Cat Lancehead, Cauca Valley Yellow Lancehead
  Bothrops rowleyi Bogert, 1968 -- invalid
  Bothrops sanctaecrucis Hoge, 1966 -- valid -- Bolivian Lancehead
  Bothrops schlegelii supraciliaris Taylor, 1954 -- invalid
  Bothrops sphenophrys H. M. Smith, 1960 -- invalid
  Bothrops taeniatus Wagler, 1824 -- valid -- Speckled Forest Pit Viper
  Bothrops taeniatus lichenosa Roze, 1958 -- valid
  Bothrops taeniatus taeniatus Wagler, 1824 -- valid
  Bothrops tzotzilorum Campbell, 1985 -- invalid
  Bothrops venezuelensis Sandner-Montilla, 1952 -- valid
  Boulengerina christyi Boulenger, 1904 -- invalid
  Boulengerina stormsi Dollo, 1886 -- invalid
  Brachyaspis atriceps Storr, 1980 -- invalid
  Brachycranion corpulentum Hallowell, 1854 -- invalid
  Brachylophus Cuvier in Guérin-Méneville, 1829 -- valid -- Melanesian Iguanas
  Brachylophus bulabula Fisher, Harlow, Edwards and Keogh in Keogh, Edwards, Fisher and Harlow, 2008 -- valid -- Central Fijian Banded Iguana
  Brachylophus fasciatus (Brongniart, 1800) -- valid -- Fiji Banded Iguana, Lau Banded Iguana
  Brachylophus vitiensis Gibbons, 1981 -- valid -- Fiji Crested Iguana, Fijian Crested Iguana
  Brachyophis revoili Mocquard, 1888 -- valid -- Revoil's Short Snake
  Brachyophis revoili cornii Scortecci, 1932 -- valid
  Brachyophis revoili krameri Lanza, 1966 -- valid
  Brachyophis revoili revoili Mocquard, 1888 -- valid
  Brachyorrhos badius F. Boie, 1827 -- invalid
  Brachyorrhos flammigerus F. Boie, 1827 -- invalid
  Brachyorrhos schach F. Boie, 1827 -- invalid
  Brachyurophis approximans (Glauert, 1954) -- valid -- North-western Shovel-nosed Snake
  Brachyurophis australis (Krefft, 1864) -- valid -- Eastern Shovel-nosed Snake, Coral Snake, Australian Coral Snake
  Brachyurophis campbelli (Kinghorn, 1929) -- valid
  Brachyurophis fasciolatus (Günther, 1872) -- valid -- Narrow-banded Burrowing Snake, Narrow-banded Shovel-nosed Snake
  Brachyurophis fasciolatus fasciatus (Stirling and Zietz, 1893) -- valid
  Brachyurophis fasciolatus fasciolatus (Günther, 1872) -- valid
  Brachyurophis incinctus (Storr, 1968) -- valid -- Unbanded Shovel-nosed Snake
  Brachyurophis morrisi (Horner, 1998) -- valid
  Brachyurophis roperi (Kinghorn, 1931) -- valid -- Northern Shovel-nosed Snake
  Brachyurophis semifasciatus Günther, 1863 -- valid -- Southern Shovel-nosed Snake, Half-girdled Snake
  Brachyurophis semifasciatus semifasciatus Günther, 1863 -- valid -- Southern Shovel-nosed Snake, Half-girdled Snake
  Brachyurophis semifasciatus woodjonesii (Thomson, 1934) -- valid -- Cape York Shovel-nosed Snake
  Bradypodion atromontanum Branch, Tolley and Tilbury, 2006 -- valid
  Bradypodion caeruleogula Raw and Brothers, 2008 -- valid -- Dhlinza Dwarf Chameleon, Eshowe Dwarf Chameleon
  Bradypodion caffer (Boettger, 1889) -- valid -- Transkei Dwarf Chameleon
  Bradypodion damaranum (Boulenger, 1887) -- valid -- Knysna Dwarf Chameleon
  Bradypodion dracomontanum Raw, 1976 -- valid -- Drakensberg Dwarf Chameleon
  Bradypodion gutturale (A. Smith, 1849) -- valid -- Robertson's Dwarf Chameleon
  Bradypodion kentanicum (Hewitt, 1935) -- valid -- Kentani Dwarf Chameleon
  Bradypodion melanocephalum (Gray, 1865) -- valid -- Black-headed Dwarf Chameleon
  Bradypodion nemorale Raw, 1978 -- valid -- Zululand Dwarf Chameleon, Qudeni Dwarf Chameleon
  Bradypodion ngomeense Tilbury and Tolley, 2009 -- valid -- Ngome Dwarf Chameleon
  Bradypodion occidentale (Hewitt, 1935) -- valid
  Bradypodion pumilum (J. F. Gmelin, 1789) -- valid -- Cape Dwarf Chameleon
  Bradypodion setaroi Raw, 1976 -- valid -- Setaro's Dwarf Chameleon
  Bradypodion taeniabronchum (A. Smith, 1831) -- valid -- Smith's Dwarf Chameleon
  Bradypodion thamnobates Raw, 1976 -- valid -- Natal Midlands Dwarf Chameleon
  Bradypodion transvaalense (FitzSimons, 1930) -- valid -- Transvaal Dwarf Chameleon
  Bradypodion ventrale (Gray, 1845) -- valid -- Southern Dwarf Chameleon
  Bronchocela Kaup, 1827 -- valid
  Bronchocela burmana Blanford, 1878 -- valid -- Green Crested Lizard
  Bronchocela celebensis Gray, 1845 -- valid -- Sulawesi Bloodsucker
  Bronchocela cristatella (Kuhl, 1920) -- valid -- Green Crested Lizard
  Bronchocela danieli (Tiwari and Biswas, 1973) -- valid -- Daniel's Forest Lizard
  Bronchocela hayeki (L. Müller, 1928) -- valid -- Sumatra Bloodsucker
  Bronchocela jubata A. M. C. Duméril and Bibron, 1837 -- valid -- Maned Forest Lizard
  Bronchocela marmorata Gray, 1845 -- valid -- Marbled Bloodsucker
  Bronchocela orlovi Hallermann, 2004 -- valid -- Orlov's Forest Lizard
  Bronchocela rayaensis L. L. Grismer, Wood, Lee, Quah, Anuar, Ngadi and Sites, 2015 -- valid -- Gunung Raya Green-crested Lizard
  Bronchocela rubrigularis Hallermann, 2009 -- valid
  Bronchocela shenlong L. L. Grismer, Wood, Lee, Quah, Anuar, Ngadi and Sites, 2015 -- valid
  Bronchocela smaragdina Günther, 1864 -- valid -- Günther's Bloodsucker
  Bronchocela vietnamensis Hallermann and Orlov, 2005 -- valid
  Brookesia Gray, 1865 -- valid
  Brookesia ambreensis Raxworthy and Nussbaum, 1995 -- valid
  Brookesia antakarana Raxworthy and Nussbaum, 1995 -- valid
  Brookesia bekolosy Raxworthy and Nussbaum, 1995 -- valid
  Brookesia betschi Brygoo, Blanc and Domergue, 1974 -- valid
  Brookesia bonsi Ramanantsoa, 1980 -- valid
  Brookesia brunoi Crottini, Miralles, Glaw, Harris, Lima and Vences, 2012 -- valid
  Brookesia brygooi Raxworthy and Nussbaum, 1995 -- valid
  Brookesia confidens Glaw, G. Köhler, Townsend and Vences, 2012 -- valid
  Brookesia decaryi Angel, 1939 -- valid -- Spiny Leaf Chameleon
  Brookesia dentata Mocquard, 1900 -- valid -- Toothed Leaf Chameleon
  Brookesia desperata Glaw, G. Köhler, Townsend and Vences, 2012 -- valid
  Brookesia ebenaui (Boettger, 1880) -- valid -- Northem Leaf Chameleon
  Brookesia exarmata Schimmenti and Jesu, 1996 -- valid
  Brookesia griveaudi Brygoo, Blanc and Domergue, 1974 -- valid -- Marojejy Leaf Chameleon
  Brookesia karchei Brygoo, Blanc and Domergue, 1970 -- valid
  Brookesia lambertoni Brygoo and Domergue, 1970 -- valid -- Fito Leaf Chameleon
  Brookesia lineata Raxworthy and Nussbaum, 1995 -- valid
  Brookesia lolontany Raxworthy and Nussbaum, 1995 -- invalid
  Brookesia micra Glaw, G. Köhler, Townsend and Vences, 2012 -- valid
  Brookesia minima Boettger, 1893 -- valid -- Minute Leaf Chameleon
  Brookesia nasus Boulenger, 1887 -- invalid
  Brookesia perarmata (Angel, 1933) -- valid -- Antsingy Leaf Chameleon
  Brookesia peyrierasi Brygoo and Domergue, 1974 -- valid
  Brookesia ramanantsoai Brygoo and Domergue, 1975 -- valid
  Brookesia stumpffi Boettger, 1894 -- valid -- Plated Leaf Chameleon
  Brookesia superciliaris (Kuhl, 1820) -- valid -- Brown Leaf Chameleon
  Brookesia therezieni Brygoo and Domergue, 1970 -- valid -- Permet Leaf Chameleon
  Brookesia thieli Brygoo and Domergue, 1969 -- valid -- Domergue's Leaf Chameleon
  Brookesia tristis Glaw, G. Köhler, Townsend and Vences, 2012 -- valid
  Brookesia tuberculata Mocquard, 1894 -- valid -- Mount d'Ambre Leaf Chameleon
  Brookesia vadoni Brygoo and Domergue, 1968 -- valid -- Iaraka River Leaf Chameleon
  Brookesia valerieae Raxworthy, 1991 -- valid
  Brookesiinae -- valid
  Brygophis coulangesi (Domergue, 1988) -- valid
  Bucephalus typus A. Smith, 1828 -- invalid
  Bufoniceps Arnold, 1992 -- valid
  Bufoniceps laungwalaensis (Sharma, 1978) -- valid -- Rajasthan Toad-headed lizard, Laungwala Long-headed Lizard
  Buhoma depressiceps (Werner, 1897) -- valid -- Pale-headed Forest Snake
  Buhoma depressiceps depressiceps (Werner, 1897) -- valid
  Buhoma depressiceps marlieri (Laurent, 1956) -- valid
  Buhoma procterae (Loveridge, 1922) -- valid -- Uluguru Forest Snake
  Buhoma vauerocegae (Tornier, 1902) -- valid -- Usambara Forest Snake
  Bungarus andamanensis Biswas and Sanyal, 1978 -- valid -- South Andaman Krait
  Bungarus bungaroides (Cantor, 1839) -- valid -- Northeastern Hill Krait
  Bungarus caeruleus (Schneider, 1801) -- valid -- Indian Krait, Common Krait
  Bungarus caeruleus magnimaculata Wall and Evans, 1901 -- invalid
  Bungarus caeruleus sindanus Boulenger, 1897 -- invalid
  Bungarus candidus (Linnaeus, 1758) -- valid -- Blue Krait
  Bungarus ceylonicus Günther, 1864 -- valid -- Ceylon Krait
  Bungarus ceylonicus ceylonicus Günther, 1864 -- valid
  Bungarus ceylonicus karavala Deraniyagala, 1955 -- valid
  Bungarus fasciatus (Schneider, 1801) -- valid -- Banded Krait
  Bungarus flaviceps Reinhardt, 1843 -- valid -- Red-headed Krait
  Bungarus flaviceps baluensis Loveridge, 1938 -- valid
  Bungarus flaviceps flaviceps Reinhardt, 1843 -- valid
  Bungarus lividus Cantor, 1839 -- valid -- Lesser Black Krait
  Bungarus magnimaculatus Wall and Evans, 1901 -- valid -- Burmese Krait
  Bungarus multicinctus Blyth, 1861 -- valid -- Many-banded Krait
  Bungarus multicinctus multicinctus Blyth, 1861 -- valid
  Bungarus multicinctus wanghaotingi Pope, 1928 -- valid
  Bungarus niger Wall, 1908 -- valid -- Greater Black Krait
  Bungarus persicus Abtin, Nilson, Mobaraki, Hosseini and Dehgannejhad, 2014 -- valid
  Bungarus sindanus Boulenger, 1897 -- valid -- Sind Krait
  Bungarus sindanus walli Wall, 1907 -- invalid
  Bungarus slowinskii Kuch, Kizirian, T. Q. Nguyen, Lawson, Donnelly and Mebs, 2005 -- valid -- Red River Krait
  Bungarus walli Wall, 1907 -- valid -- Sind Krait
  Bungarus wanghaotingi Pope, 1928 -- invalid
  Caaeteboia amarali (Wettstein, 1930) -- valid -- Amaral's Ground Snake
  Cacophis churchilli Wells and Wellington, 1985 -- valid
  Cacophis harriettae Krefft, 1869 -- valid -- White-crowned Snake, White-naped Snake
  Cacophis krefftii Günther, 1863 -- valid -- Krefft's Dwarf Snake, Dwarf Crowned Snake
  Cacophis modesta Günther, 1872 -- invalid
  Cacophis squamulosus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Golden Crowned Snake
  Cacophis warro De Vis, 1884 -- invalid
  Calamaria H. Boie in F. Boie, 1827 -- valid
  Calamaria abramovi Orlov, 2009 -- valid
  Calamaria abstrusa Inger and Marx, 1965 -- valid
  Calamaria acutirostris Boulenger, 1896 -- valid -- Pointed Snout Reed Snake
  Calamaria albiventer (Gray, 1835) -- valid -- White-bellied Reed Snake
  Calamaria alidae Boulenger, 1920 -- valid
  Calamaria annulata Gray in Gray, 1841 -- invalid
  Calamaria apraeocularis M. A. Smith, 1927 -- valid -- Apreocular Reed Snake
  Calamaria atrocincta Schlegel, 1837 -- invalid
  Calamaria banggaiensis Koch, Arida, McGuire, Iskandar and Böhme, 2009 -- valid -- Banggai Reed Snake
  Calamaria battersbyi Inger and Marx, 1965 -- valid
  Calamaria bicolor A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Two-colored Dwarf Snake
  Calamaria bitorques Peters, 1872 -- valid -- Luzon Dwarf Snake
  Calamaria boesemani Inger and Marx, 1965 -- valid -- Boeseman's Reed Snake
  Calamaria borneensis Bleeker, 1860 -- valid
  Calamaria brongersmai Inger and Marx, 1965 -- valid -- Brongersma's Reed Snake
  Calamaria buchi Marx and Inger, 1955 -- valid -- Dalat Dwarf Snake
  Calamaria butonensis Howard and Gillespie, 2007 -- valid
  Calamaria catenata Blyth, 1854 -- invalid
  Calamaria ceramensis de Rooij, 1913 -- valid
  Calamaria concolor Orlov, T. Q. Nguyen, T. T. Nguyen, Ananjeva and Cuc Thu Ho, 2010 -- valid
  Calamaria coronata Schlegel, 1837 -- invalid
  Calamaria coronella Schlegel, 1837 -- invalid
  Calamaria crassa Lidth de Jeude, 1922 -- valid
  Calamaria curta Boulenger, 1896 -- valid -- Dark-bellied Reed Snake
  Calamaria cuvieri Jan, 1862 -- invalid
  Calamaria degenhardtii Berthold, 1846 -- invalid
  Calamaria diadema Schlegel, 1837 -- invalid
  Calamaria doederleini Gough, 1902 -- valid
  Calamaria dorbignyi Schlegel, 1837 -- invalid
  Calamaria dumerilii Bibron, 1840 -- invalid
  Calamaria eiselti Inger and Marx, 1965 -- valid
  Calamaria everetti Boulenger, 1893 -- valid
  Calamaria favae Filippi, 1840 -- invalid
  Calamaria forcarti Inger and Marx, 1965 -- valid
  Calamaria gervaisii A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Gervais' Reed Snake, Philippine Dwarf Snake
  Calamaria gialaiensis Ziegler, Nguyen Van Sang and T. Q. Nguyen, 2009 -- valid -- Gia LaiReed Snake, Gia Lai Reed Snake
  Calamaria gimlettii Boulenger, 1905 -- invalid
  Calamaria grabowskyi Fischer, 1885 -- valid
  Calamaria gracillima (Günther, 1872) -- valid
  Calamaria griswoldi Loveridge, 1938 -- valid
  Calamaria hilleniusi Inger and Marx, 1965 -- valid
  Calamaria ingeri Grismer, Kaiser and Yaakob, 2004 -- valid
  Calamaria javanica Boulenger, 1891 -- valid
  Calamaria javanica javanica Boulenger, 1891 -- valid
  Calamaria javanica lineata Brongersma, 1928 -- valid
  Calamaria joloensis Taylor, 1922 -- valid -- Jolo Worm Snake
  Calamaria lateralis Mocquard, 1890 -- valid
  Calamaria lautensis de Rooij, 1917 -- valid
  Calamaria leucogaster Bleeker, 1860 -- valid -- Ampat Lawang Dwarf Snake
  Calamaria linnaei H. Boie in F. Boie, 1827 -- valid -- Linne's Dwarf Snake
  Calamaria linnaei melanota Jan, 1862 -- invalid
  Calamaria longiceps Cantor, 1847 -- invalid
  Calamaria longirostris Howard and Gillespie, 2007 -- valid
  Calamaria lovii Boulenger, 1887 -- valid -- Lovi's Reed Snake
  Calamaria lovii gimletti Boulenger, 1905 -- valid
  Calamaria lovii ingermarxorum Darevsky and Orlov, 1992 -- valid
  Calamaria lovii lovii Boulenger, 1887 -- valid
  Calamaria lovii wermuthi Inger and Marx, 1965 -- valid
  Calamaria lumbricoidea H. Boie in F. Boie, 1827 -- valid -- Variable Reed Snake
  Calamaria lumbricoidea griswoldi Loveridge, 1938 -- invalid
  Calamaria lumholtzi Andersson, 1923 -- valid
  Calamaria margaritophora Bleeker, 1860 -- valid -- Bleeker's Dwarf Snake
  Calamaria mecheli Schenkel, 1901 -- valid
  Calamaria melanota Jan, 1862 -- valid
  Calamaria meleagris Reinhardt, 1843 -- invalid
  Calamaria microphthalma Bianconi, 1852 -- invalid
  Calamaria modesta A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid
  Calamaria monticola Cantor, 1839 -- invalid
  Calamaria muelleri Boulenger, 1896 -- valid -- Mueller's Reed Snake
  Calamaria nuchalis Boulenger, 1896 -- valid -- Narrow-headed Reed Snake
  Calamaria obscurostriata Blyth, 1854 -- invalid
  Calamaria palawanensis Inger and Marx, 1965 -- valid -- Palawan Worm Snake
  Calamaria pavimentata A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Collared Reed Snake
  Calamaria pavimentata miyarai Takara, 1962 -- valid
  Calamaria pavimentata pavimentata A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid
  Calamaria pfefferi Stejneger, 1901 -- valid -- Pfeffer's Reed Snake
  Calamaria prakkei Lidth de Jeude, 1893 -- valid -- Prakke's Reed Snake
  Calamaria rebentischi Bleeker, 1860 -- valid
  Calamaria reticulata Blyth, 1854 -- invalid
  Calamaria sagittaria Cantor, 1839 -- invalid
  Calamaria sangi T. Q. Nguyen, Koch and Ziegler, 2009 -- valid -- Sang's Reed Snake
  Calamaria schlegeli A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Pink-headed Reed Snake, White-headed Reed Snake
  Calamaria schlegeli cuvieri Jan, 1862 -- valid
  Calamaria schlegeli schlegeli A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid
  Calamaria schmidti Marx and Inger, 1955 -- valid -- Schmidt's Reed Snake
  Calamaria septentrionalis Boulenger, 1890 -- valid -- Hong Kong Dwarf Snake
  Calamaria suluensis Taylor, 1922 -- valid
  Calamaria sumatrana Edeling, 1870 -- valid -- Sumatra Dwarf Snake
  Calamaria thanhi Ziegler and Quyet, 2005 -- valid -- Thanh's Reed Snake
  Calamaria ulmeri Sackett, 1940 -- valid
  Calamaria unicolor Reinhardt, 1843 -- invalid
  Calamaria virgulata H. Boie in F. Boie, 1827 -- valid -- Boie's Dwarf Snake
  Calamaria yunnanensis Chernov, 1962 -- valid
  Calamelaps polylepis Bocage, 1873 -- invalid
  Calamodon paucidens Amaral, 1936 -- invalid
  Calamodontophis paucidens (Amaral, 1936) -- valid -- Tropical Forest Snake
  Calamodontophis ronaldoi Franco, de Carvalho Cintra and de Lema, 2006 -- valid
  Calamohydrus andersonii Boulenger, 1888 -- invalid
  Calamorhabdium Boettger, 1898 -- valid
  Calamorhabdium acuticeps Ahl, 1933 -- valid -- Sulawesi Iridescent Snake
  Calamorhabdium kuekenthali Boettger, 1898 -- valid -- Batjan Iridescent Snake
  Calliophis beddomei M. A. Smith, 1943 -- valid -- Beddome's Coral Snake
  Calliophis bibroni (Jan, 1858) -- valid -- Bibron's Coral Snake
  Calliophis bivirgata (F. Boie, 1827) -- invalid
  Calliophis bivirgatus (F. Boie, 1827) -- valid -- Blue Malaysian Coral Snake
  Calliophis bivirgatus bivirgatus (F. Boie, 1827) -- valid
  Calliophis bivirgatus flaviceps (Cantor, 1839) -- valid
  Calliophis bivirgatus tetrataenius (Bleeker, 1859) -- valid
  Calliophis boettgeri Fritze, 1894 -- invalid
  Calliophis castoe E. N. Smith, Ogale, Deepak and Giri, 2012 -- valid -- Castoe's Coralsnake
  Calliophis gracilis Gray in Gray and Hardwicke, 1835 -- valid -- Gray Coral Snake, Spotted Coral Snake
  Calliophis haematoetron E. N. Smith, Manamendra-Arachchi and Somaweera, 2008 -- valid -- Blood-bellied Coralsnake
  Calliophis hatori Takahashi, 1930 -- invalid
  Calliophis intestinalis (Laurenti, 1768) -- valid -- Banded Malaysian Coral Snake, Striped Coral Snake
  Calliophis intestinalis bilineata W. C. H. Peters, 1881 -- invalid
  Calliophis intestinalis bilineatus W. C. H. Peters, 1881 -- valid
  Calliophis intestinalis everetti (Boulenger, 1896) -- valid
  Calliophis intestinalis intestinalis (Laurenti, 1768) -- valid
  Calliophis intestinalis lineata (Gray in Gray and Hardwicke, 1835) -- invalid
  Calliophis intestinalis lineatus (Gray in Gray and Hardwicke, 1835) -- valid
  Calliophis intestinalis philippina Günther, 1864 -- invalid
  Calliophis intestinalis philippinus Günther, 1864 -- valid
  Calliophis intestinalis suluensis Steindachner, 1891 -- valid
  Calliophis intestinalis thepassi (Bleeker, 1859) -- valid
  Calliophis iwasakii Maki, 1935 -- invalid
  Calliophis maculiceps (Günther, 1858) -- valid -- Small-spotted Coral Snake, Speckled Coral Snake
  Calliophis maculiceps atrofrontalis (Sauvage, 1877) -- valid
  Calliophis maculiceps hughi Cochran, 1927 -- valid
  Calliophis maculiceps maculiceps (Günther, 1858) -- valid
  Calliophis maculiceps michaelis Deuve, 1961 -- valid
  Calliophis maculiceps smithi Klemmer, 1963 -- valid
  Calliophis melanurus (Shaw, 1802) -- valid -- Indian Coral Snake, Slender Coral Snake
  Calliophis melanurus melanurus (Shaw, 1802) -- valid
  Calliophis melanurus sinhaleyus Deraniyagala, 1951 -- valid
  Calliophis nigrescens Günther, 1862 -- valid -- Black Coral Snake
  Calliophis sauteri (Steindachner, 1913) -- invalid
  Calliophis swinhoei Van Denburgh, 1912 -- invalid
  Callirhinus patagoniensis Girard, 1858 -- invalid
  Callisaurus Blainville, 1835 -- valid -- Zebra-tailed Lizards
  Callisaurus draconoides Blainville, 1835 -- valid -- Zebra-tailed Lizard, Lagartija cachora
  Callisaurus draconoides bogerti Martin del Campo, 1943 -- valid
  Callisaurus draconoides brevipes Bogert and Dorson, 1942 -- valid
  Callisaurus draconoides carmenensis Dickerson, 1919 -- valid
  Callisaurus draconoides crinitus Cope, 1896 -- valid
  Callisaurus draconoides draconoides Blainville, 1835 -- valid -- Zebra-tailed Lizard, Common Zebra-tailed Lizard
  Callisaurus draconoides inusitatus Dickerson, 1919 -- valid
  Callisaurus draconoides myurus Richardson, 1915 -- valid -- Nevada Gridiron-tailed Lizard, Northern Zebra-tailed Lizard, Nevada Zebratail Lizard
  Callisaurus draconoides rhodostictus Cope, 1896 -- valid -- Mojave Zebra-tailed Lizard, Western Zebratail Lizard, Mojave Zebratail Lizard
  Callisaurus draconoides ventralis (Hallowell, 1852) -- valid -- Arizona Gridiron-tailed Lizard, Arizona Zebra-tailed Lizard, Eastern Zebratail Lizard, Arizona Zebratail Lizard
  Callopeltis longissimus lineata Camerano, 1891 -- invalid
  Callophis bilineatus W. C. H. Peters, 1881 -- invalid
  Callophis hughi Cochran, 1927 -- invalid
  Callophis japonicus Günther, 1868 -- invalid
  Calloselasma rhodostoma (Kuhl, 1824) -- valid -- Malayan Pit Viper
  Calloselasma rhodostoma annamensis (Angel, 1933) -- valid
  Calloselasma rhodostoma rhodostoma (Kuhl, 1824) -- valid
  Calotes Cuvier, 1817 -- valid -- Calotes
  Calotes aurantolabium Krishnan, 2008 -- valid -- Orange-lipped Forest Lizard
  Calotes bachae Hartmann, Geissler, Poyarkov, Ihlow, Galoyan, Rödder and Böhme, 2013 -- valid
  Calotes bhutanensis Biswas, 1975 -- valid
  Calotes calotes (Linnaeus, 1758) -- valid -- Common Green Forest Lizard
  Calotes ceylonensis F. Müller, 1887 -- valid -- Ceylon Bloodsucker
  Calotes chincollium Vindum, 2003 -- valid
  Calotes desilvai Bahir and Maduwage, 2005 -- valid
  Calotes ellioti Günther, 1864 -- valid -- Elliot's Forest Lizard
  Calotes ellioti amarambalamensis Murthy, 1978 -- valid
  Calotes ellioti ellioti Günther, 1864 -- valid
  Calotes emma Gray, 1845 -- valid -- Forest Garden Lizard
  Calotes emma alticristatus Schmidt, 1925 -- valid -- Emma Gray's Forest Lizard
  Calotes emma emma Gray, 1845 -- valid
  Calotes grandisquamis Günther, 1875 -- valid -- Large Scaled Forest Lizard
  Calotes htunwini Zug and Vindum, 2006 -- valid
  Calotes irawadi Zug, Brown, Schulte and Vindum, 2006 -- valid
  Calotes jerdoni Günther, 1870 -- valid -- Jerdon's Forest Lizard
  Calotes liocephalus Günther, 1872 -- valid -- Crestless Lizard
  Calotes liolepis Boulenger, 1885 -- valid -- SriLanka Agama
  Calotes manamendrai A. A. Amarasinghe and Karunarathna in Amarasinghe et al., 2014 -- valid -- Manamendra-Arachchi's Whistling Lizard
  Calotes maria Gray, 1845 -- valid -- Khasi Hills Forest Lizard
  Calotes medogensis E. Zhao and Li, 1984 -- valid -- Medog Bloodsucker
  Calotes minor (Hardwicke and Gray, 1827) -- valid -- Dwarf Rock Agama, Hardwicke's Bloodsucker
  Calotes mystaceus A. M. C. Duméril and Bibron, 1837 -- valid -- White-lipped Calotes, Indo-Chinese Forest Lizard, Blue-crested Lizard
  Calotes nemoricola Jerdon, 1853 -- valid -- Nilgiri Forest Lizard
  Calotes nigrilabris W. C. H. Peters, 1860 -- valid -- Black-cheek lizard
  Calotes nigriplicatus Hallermann, 2000 -- valid
  Calotes pethiyagodai A. A. Amarasinghe, Karunarathna and Hallermann, 2014 -- valid -- Pethiyagoda's Crestless Lizard
  Calotes rouxii A. M. C. Duméril and Bibron, 1837 -- valid -- Roux's Forest Lizard, Forest Blood Sucker
  Calotes versicolor (Daudin, 1802) -- valid -- Eastern Garden Lizard
  Calotes versicolor farooqi Auffenberg and Rehmann, 1995 -- valid
  Calotes versicolor versicolor (Daudin, 1802) -- valid
  Calumma amber Raxworthy and Nussbaum, 2006 -- valid -- Amber Chameleon
  Calumma ambreense (Ramanantsoa, 1974) -- valid
  Calumma andringitraense (Brygoo, Blanc and Domergue, 1972) -- valid
  Calumma boettgeri (Boulenger, 1888) -- valid
  Calumma brevicorne (Günther, 1879) -- valid
  Calumma brevicorne tsarafidyi (Brygoo and Domergue, 1970) -- invalid
  Calumma capuroni (Brygoo, Blanc and Domergue, 1972) -- valid
  Calumma crypticum Raxworthy and Nussbaum, 2006 -- valid -- Cryptic Chameleon
  Calumma cucullatum (Gray, 1831) -- valid
  Calumma fallax (Mocquard, 1900) -- valid
  Calumma furcifer (Vailland and Grandidier, 1880) -- valid
  Calumma gallus (Günther, 1877) -- valid
  Calumma gastrotaenia (Boulenger, 1888) -- invalid
  Calumma glawi Böhme, 1997 -- valid
  Calumma globifer (Günther, 1879) -- valid
  Calumma guibei (Hillenius, 1959) -- valid
  Calumma guillaumeti (Brygoo, Blanc and Domergue, 1974) -- valid
  Calumma hafahafa Raxworthy and Nussbaum, 2006 -- valid -- Bizarre-Nosed Chameleon
  Calumma hilleniusi (Brygoo, Blanc and Domergue, 1973) -- valid
  Calumma jejy Raxworthy and Nussbaum, 2006 -- valid -- Marojejy Peak Chameleon
  Calumma linotum (L. Müller, 1924) -- valid
  Calumma malthe (Günther, 1879) -- valid
  Calumma marojezense (Brygoo, Blanc and Domergue, 1970) -- valid
  Calumma nasutum (A. M. C. Duméril and Bibron, 1836) -- valid
  Calumma oshaughnessyi (Günther, 1881) -- valid
  Calumma parsonii (Cuvier, 1824) -- valid -- Parson's Chameleon
  Calumma parsonii cristifer (Methuen and Hewitt, 1913) -- valid
  Calumma parsonii parsonii (Cuvier, 1824) -- valid
  Calumma peltierorum Raxworthy and Nussbaum, 2006 -- valid -- Peltiers' Chameleon
  Calumma peyrierasi (Brygoo, Blanc and Domergue, 1974) -- valid
  Calumma tarzan Gehring, Pabijan, Ratsoavina, J. Köhler, Vences and Glaw, 2010 -- valid
  Calumma tsaratananense (Brygoo and Domergue, 1967) -- valid
  Calumma tsycorne Raxworthy and Nussbaum, 2006 -- valid -- Blunt-Nosed Chameleon
  Calumma vatosoa Andreone, Mattioli, Jesu and Randrianirina, 2001 -- valid
  Calumma vencesi Andreone, Mattioli, Jesu and Randrianirina, 2001 -- valid
  Calumma vohibola Gehring, Ratsoavina, Vences and Glaw, 2011 -- valid
  Cannia weigeli Wells and Wellington, 1987 -- invalid
  Caraiba andreae (Reinhardt and Lütken, 1862) -- valid -- Black and White Racer
  Caraiba andreae andreae (Reinhardt and Lütken, 1862) -- valid
  Caraiba andreae melopyrrha (Thomas and Garrido, 1967) -- valid
  Caraiba andreae morenoi (Garrido, 1973) -- valid
  Caraiba andreae nebulatus (Barbour, 1916) -- valid
  Caraiba andreae orientalis (Barbour and Ramsden, 1919) -- valid
  Caraiba andreae peninsulae (Schwartz and Thomas, 1960) -- valid
  Carphophis amoenus (Say, 1825) -- valid -- Eastern Worm Snake, Eastern Wormsnake, Common Wormsnake
  Carphophis amoenus amoenus (Say, 1825) -- valid -- Eastern Worm Snake, Eastern Wormsnake
  Carphophis amoenus helenae (Kennicott, 1859) -- valid -- Midwest Worm Snake, Midwestern Wormsnake
  Carphophis vermis (Kennicott, 1859) -- valid -- Western Wormsnake, Western Worm Snake
  Catostoma chalybeum Wagler, 1830 -- invalid
  Catostoma nasale Cope, 1868 -- invalid
  Catostoma psephotum Cope, 1875 -- invalid
  Caudisona basilisca Cope, 1864 -- invalid
  Caudisona enyo Cope, 1861 -- invalid
  Caudisona polysticta Cope, 1865 -- invalid
  Caudisona terrifica Laurenti, 1768 -- invalid
  Causus bilineatus Boulenger, 1905 -- valid -- Two-Striped Night Adder, Two-lined Night Adder
  Causus defilippii (Jan, 1863) -- valid -- Snouted Night Adder
  Causus lichtensteinii (Jan, 1859) -- valid -- Forest Night Adder
  Causus maculatus (Hallowell, 1842) -- valid -- Spotted Night Adder, West-African Night Adder
  Causus rasmusseni Broadley, 2014 -- valid
  Causus resimus (Peters, 1862) -- valid -- Green Night Adder
  Causus rhombeatus (Lichtenstein, 1823) -- valid -- Rhombic Night Adder, Common Night Adder
  Cemophora coccinea (Blumenbach, 1788) -- valid -- Scarlet Snake, Scarletsnake
  Cemophora coccinea coccinea (Blumenbach, 1788) -- valid -- Florida Scarlet Snake, Florida Scarletsnake
  Cemophora coccinea copei Jan, 1863 -- valid -- Northern Scarlet Snake, Northern Scarletsnake
  Cemophora coccinea lineri Williams, Brown and Wilson, 1966 -- invalid -- Texas Scarlet Snake
  Cemophora copei Jan, 1863 -- invalid
  Cerastes boehmei Wagner and Wilms, 2010 -- valid
  Cerastes cerastes (Linnaeus, 1758) -- valid -- Desert Horned Viper
  Cerastes cerastes cerastes (Linnaeus, 1758) -- valid
  Cerastes cerastes gasperettii Leviton and S. C. Anderson, 1967 -- invalid
  Cerastes cerastes hoofieni Werner, Sivan, Kushnir and Motro in Joger, 1999 -- valid
  Cerastes gasperettii Leviton and S. C. Anderson, 1967 -- valid
  Cerastes gasperettii gasperettii Leviton and S. C. Anderson, 1967 -- valid
  Cerastes gasperettii mendelssohni Werner, Sivan, Kushnir and Motro in Joger, 1999 -- valid
  Cerastes persicus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Cerastes vipera (Linnaeus, 1758) -- valid -- Sahara Sand Viper
  Cerates mexicanus Laurenti, 1768 -- invalid
  Ceratophora Gray, 1834 -- valid
  Ceratophora aspera Günther, 1864 -- valid -- Sri Lanka Horned Agama
  Ceratophora erdeleni Pethiyagoda & Manamendra-Arachchi, 1998 -- valid
  Ceratophora karu Pethiyagoda & Manamendra-Arachchi, 1998 -- valid
  Ceratophora stoddartii Gray, 1834 -- valid -- Mountain Horned Agama, Rhino-horned Lizard
  Ceratophora tennentii Günther, 1861 -- valid -- Rhinoceros Agama
  Cercaspis travancoricus Beddome, 1870 -- invalid
  Cercophis auratus (Schlegel, 1837) -- valid -- Schlegel's Golden Snake
  Cerrophidion godmani (Günther, 1863) -- valid -- Nauyaca-de montaña de Godman, Godman's Montane Pit Viper
  Cerrophidion petlalcalensis Lopéz-Luna, Vogt and Torre-Loranca, 1999 -- valid
  Cerrophidion sasai Jadin, Townsend, Castoe and Campbell, 2012 -- valid -- Costa Rica Montane Pitviper
  Cerrophidion tzotzilorum (Campbell, 1985) -- valid -- Nauyaca-de montaña tzotzil, Tzotzil Montane Pit Viper
  Cerrophidion wilsoni Jadin, Townsend, Castoe and Campbell, 2012 -- valid -- Honduras Montane Pitviper
  Chalarodon madagascariensis W. C. H. Peters, 1854 -- valid -- Madagascar Iguana
  Chalarodon steinkampi Miralles, Glaw, Ratsoavina and Vences, 2015 -- valid -- Steinkamp's Madagascar Iguana
  Chamaeleo africanus Laurenti, 1768 -- valid -- African Chameleon
  Chamaeleo anchietae Bocage, 1872 -- valid -- Double-scaled Chameleon
  Chamaeleo arabicus Matschie, 1893 -- valid -- Arabian Chameleon
  Chamaeleo brevicornis tsarafidyi Brygoo and Domergue, 1970 -- invalid
  Chamaeleo calcaricarens Böhme, 1985 -- valid
  Chamaeleo calyptratus A. M. C. Duméril and A. H. A. Duméril, 1851 -- valid -- Cone-headed Chameleon, Veiled Chameleon, Yemen Chameleon
  Chamaeleo calyptratus calcarifer W. C. H. Peters, 1871 -- valid
  Chamaeleo calyptratus calyptratus A. M. C. Duméril and A. H. A. Duméril, 1851 -- valid
  Chamaeleo chamaeleon (Linnaeus, 1758) -- valid
  Chamaeleo chamaeleon chamaeleon (Linnaeus, 1758) -- valid
  Chamaeleo chamaeleon musae Steindachner, 1901 -- valid
  Chamaeleo chamaeleon orientalis Parker, 1938 -- valid
  Chamaeleo chamaeleon recticrista Boettger, 1880 -- valid
  Chamaeleo dilepis Leach, 1819 -- valid -- Flap-neck Chameleon, Flapneck Chameleon
  Chamaeleo dilepis dilepis Leach, 1819 -- valid
  Chamaeleo dilepis idjwiensis Loveridge, 1942 -- valid
  Chamaeleo dilepis isabellinus Günther, 1893 -- valid
  Chamaeleo dilepis martensi Mertens, 1964 -- valid
  Chamaeleo dilepis petersii Gray, 1865 -- valid
  Chamaeleo dilepis quilensis Bocage, 1866 -- valid -- Bocage's Chameleon
  Chamaeleo dilepis roperi Boulenger, 1890 -- valid
  Chamaeleo dilepis ruspolii Boettger, 1893 -- valid
  Chamaeleo furcifer Vailland and Grandidier, 1880 -- invalid
  Chamaeleo gracilis Hallowell, 1842 -- valid -- Graceful Chameleon
  Chamaeleo gracilis etiennei K. P. Schmidt, 1919 -- valid
  Chamaeleo gracilis gracilis Hallowell, 1842 -- valid
  Chamaeleo laevigatus Gray, 1863 -- valid -- Smooth Chameleon
  Chamaeleo monachus Gray, 1865 -- valid -- Socotra Chameleon
  Chamaeleo namaquensis A. Smith, 1831 -- valid -- Namaqua Chameleon
  Chamaeleo necasi Ullenbruch, Krause and Böhme, 2007 -- valid
  Chamaeleo rudis sternfeldi Rand, 1963 -- invalid
  Chamaeleo senegalensis Daudin, 1802 -- valid -- Senegal Chameleon
  Chamaeleo zeylanicus Laurenti, 1768 -- valid -- Indian Chameleon
  Chamaeleon globifer Günther, 1879 -- invalid
  Chamaeleoninae -- valid
  Chamaelycus christyi Boulenger, 1919 -- valid -- Christy's Banded Snake
  Chamaelycus fasciatus (Günther, 1858) -- valid -- African Banded Snake
  Chamaelycus parkeri (Angel, 1934) -- valid -- Parker's Banded Snake
  Chamaelycus werneri (Mocquard, 1902) -- valid
  Chamaetortus aulicus Günther, 1864 -- invalid
  Chamaetortus aulicus flavidus Broadley and Stevens, 1971 -- invalid
  Changulia albiventer Gray, 1835 -- invalid
  Chapinophis xanthocheilus Campbell and E. N. Smith, 1998 -- valid
  Chelosania Gray, 1845 -- valid
  Chelosania brunnea Gray, 1945 -- valid -- Chameleon Dragon
  Chersodromus liebmanni Reinhardt, 1861 -- valid -- Culebra-corredora de Liebmann, Liebmann's Earth Runner
  Chersodromus rubriventris (Taylor, 1949) -- valid -- Culebra-corredora vientre rojo, Redbelly Earth Runner
  Chilomeniscus savagei Cliff, 1954 -- valid -- Culebra-arenera de Cerralvo, Savage's Sand Snake
  Chilomeniscus stramineus Cope, 1860 -- valid -- Variable Sandsnake, Culebra-arenera manchada
  Chilomeniscus stramineus esterensis Hoard, 1939 -- valid
  Chilomeniscus stramineus stramineus Cope, 1860 -- valid
  Chilopoma rufipunctatum Cope, 1875 -- invalid
  Chilorhinophis butleri Werner, 1907 -- valid -- Butler's Two-headed Snake
  Chilorhinophis carpenteri carpenteri (Parker, 1927) -- invalid
  Chilorhinophis carpenteri liwalensis Loveridge, 1951 -- invalid
  Chilorhinophis gerardi (Boulenger, 1913) -- valid -- Congo Two-headed Snake, Gerard's Black and Yellow Burrowing Snake
  Chilorhinophis gerardi gerardi (Boulenger, 1913) -- valid
  Chilorhinophis gerardi tanganyikae Loveridge, 1951 -- valid -- Western Tanganyika Two-headed Snake
  Chionactis annulata (Baird, 1859) -- valid -- Colorado Desert Shovelnose Snake, Colorado Desert Shovel-nosed Snake, Resplendent Desert Shovel-nosed Snake
  Chionactis annulata annulata (Baird, 1859) -- valid -- Colorado Desert Shovelnose Snake, Colorado Desert Shovel-nosed Snake
  Chionactis annulata klauberi (Stickel, 1941) -- valid -- Tucson Shovel-nosed Snake
  Chionactis occipitalis (Hallowell, 1854) -- valid -- Western Shovel-nosed Snake, Culebra-nariz de pala del oeste, Western Shovelnose Snake, Mojave Shovelnose Snake, Mohave Shovel-nosed Snake
  Chionactis occipitalis annulata (Baird, 1859) -- invalid
  Chionactis occipitalis klauberi (Stickel, 1941) -- invalid -- Tucson Shovel-nosed Snake
  Chionactis occipitalis occipitalis (Hallowell, 1854) -- invalid -- Mojave Shovelnose Snake
  Chionactis occipitalis talpina Klauber, 1951 -- invalid -- Nevada Shovelnose Snake
  Chionactis palarostris (Klauber, 1937) -- valid -- Sonoran Shovel-nosed Snake, Culebra-nariz de pala sonorense, Sonoran Shovelnose Snake
  Chionactis palarostris organica Klauber, 1951 -- valid -- Organ Pipe Shovelnose Snake, Organ Pipe Shovel-nosed Snake
  Chionactis palarostris palarostris (Klauber, 1937) -- valid -- Sonoran Shovelnose Snake
  Chironius bicarinatus (Wied-Neuwied, 1820) -- valid -- Two-headed Sipo
  Chironius brazili Hamdan and Fernandes, 2015 -- valid
  Chironius carinatus (Linnaeus, 1758) -- valid -- Sipo
  Chironius carinatus flavopictus (Werner, 1909) -- invalid
  Chironius carinatus spixii (Hallowell, 1845) -- invalid
  Chironius challenger Kok, 2010 -- valid
  Chironius diamantina Fernandes and Hamdan, 2014 -- valid
  Chironius exoletus (Linnaeus, 1758) -- valid -- Linnaeus' Sipo
  Chironius flavolineatus (Jan, 1863) -- valid -- Boettger's Sipo
  Chironius flavopictus (Werner, 1909) -- valid -- Sipo
  Chironius foveatus Bailey, 1955 -- valid -- South American Sipo
  Chironius fuscus (Linnaeus, 1758) -- valid -- Brown Sipo
  Chironius fuscus leucometapus Dixon, Wiest and Cei, 1993 -- invalid
  Chironius grandisquamis (Peters, 1869) -- valid -- Ecuador Sipo
  Chironius laevicollis (Wied-Neuwied, 1824) -- valid -- Brazilian Sipo
  Chironius laurenti Dixon, Wiest and Cei, 1993 -- valid
  Chironius leucometapus Dixon, Wiest and Cei, 1993 -- valid -- Yellow-headed Sipo
  Chironius maculoventris Dixon, Wiest and Cei, 1993 -- valid
  Chironius monticola Roze, 1952 -- valid -- Mountain Sipo
  Chironius multiventris K. P. Schmidt and Walker, 1943 -- valid -- South American Sipo
  Chironius quadricarinatus (F. Boie, 1827) -- valid -- Central Sipo
  Chironius quadricarinatus maculoventris Dixon, Wiest and Cei, 1993 -- invalid
  Chironius scurrulus (Wagler, 1824) -- valid -- Wagler's Sipo
  Chironius septentrionalis Dixon, Wiest and Cei, 1993 -- valid -- South American Sipo
  Chironius spixii (Hallowell, 1845) -- valid -- Sipo
  Chironius vincenti (Boulenger, 1891) -- valid -- Saint Vincent Racer
  Chitulia inornata Gray, 1849 -- invalid
  Chlamydosaurus kingii Gray, 1825 -- valid -- Frilled Lizard
  Chlorophis bequaerti Schmidt, 1923 -- invalid
  Chlorophis carinatus Andersson, 1901 -- invalid
  Chlorophis heterodermus Hallowell, 1857 -- invalid
  Chlorophis heterodermus pobeguini Chabanaud, 1916 -- invalid
  Chlorosoma arnaldoi Amaral, 1932 -- invalid
  Choristodon concolor A. Smith, 1849 -- invalid
  Chrysopelea ornata (Shaw, 1802) -- valid -- Golden Flying Snake
  Chrysopelea ornata ornata (Shaw, 1802) -- valid
  Chrysopelea ornata ornatissima Werner, 1925 -- valid -- Golden Tree Snake
  Chrysopelea ornata sinhaleya Deraniyagala, 1945 -- valid
  Chrysopelea paradisi H. Boie in F. Boie, 1827 -- valid -- Paradise Tree Snake, Paradise Flying Snake
  Chrysopelea paradisi celebensis Mertens, 1968 -- valid
  Chrysopelea paradisi paradisi H. Boie in F. Boie, 1827 -- valid
  Chrysopelea paradisi variabilis Mertens, 1968 -- valid
  Chrysopelea pelias (Linnaeus, 1758) -- valid -- Banded Flying Snake, Twin-barred Tree Snake
  Chrysopelea rhodopleuron F. Boie, 1827 -- valid -- Moluccan Flying Snake
  Chrysopelea rhodopleuron rhodopleuron F. Boie, 1827 -- valid
  Chrysopelea rhodopleuron viridis Fischer, 1880 -- valid
  Chrysopelea taprobanica M. A. Smith, 1943 -- valid -- Indian Flying Snake
  Chrysopelea viridis Fischer, 1880 -- invalid
  Clelia clelia (Daudin, 1803) -- valid -- Culebra-viborera común
  Clelia clelia clelia (Daudin, 1803) -- valid
  Clelia clelia groomei Greer, 1965 -- valid
  Clelia clelia immaculata H. M. Smith, 1942 -- invalid
  Clelia equatoriana (Amaral, 1924) -- valid -- Equatorial Mussurana
  Clelia errabunda Underwood, 1993 -- valid -- Underwood's Mussurana
  Clelia hussami Morato, Franco and Sanches, 2003 -- valid
  Clelia langeri Reichle and Embert, 2005 -- valid
  Clelia montana Franco, Marques and Puorto, 1997 -- invalid
  Clelia plumbea (Wied-Neuwied, 1820) -- valid
  Clelia quimi Franco, Marques and Puorto, 1997 -- invalid
  Clelia scytalina (Cope, 1867) -- valid -- Culebra-viborera mexicana, Mexican Snake Eater
  Cloelia anomala Jan, 1863 -- invalid
  Clonophis Cope, 1889 -- valid -- Kirtland's Snakes
  Clonophis kirtlandii (Kennicott, 1856) -- valid -- Kirtland's Snake
  Clotho mauritanica Gray, 1849 -- invalid
  Cochliophagus mikanii neuwiedi Ihering, 1911 -- invalid
  Coelognathus enganensis (Vinciguerra, 1892) -- valid -- Enggano Rat Snake
  Coelognathus erythrurus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Reddish Rat Snake
  Coelognathus erythrurus celebensis (Jan, 1863) -- valid
  Coelognathus erythrurus erythrurus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid
  Coelognathus erythrurus manillensis Jan, 1863 -- valid
  Coelognathus erythrurus psephenourus (Leviton, 1979) -- valid
  Coelognathus flavolineatus (Schlegel, 1837) -- valid -- Black Copper Rat Snake, Yellow Striped Snake
  Coelognathus helena (Daudin, 1803) -- valid -- Trinket Snake
  Coelognathus helena helena (Daudin, 1803) -- valid
  Coelognathus helena monticollaris (Schulz, 1992) -- valid
  Coelognathus helena nigriangularis Mohapatra, Schulz, Helfenberger, Hofmann and Dutta, 2016 -- valid
  Coelognathus philippinus (Griffin, 1909) -- valid -- Reddish Rat Snake
  Coelognathus radiatus (F. Boie, 1827) -- valid -- Radiated Ratsnake, Copperhead Rat Snake, Copper-headed Trinket Snake
  Coelognathus subradiatus (Schlegel, 1837) -- valid -- Sunda Rat Snake
  Coelopeltis virgata Hallowell, 1854 -- invalid
  Collorhabdium Smedley, 1932 -- valid
  Collorhabdium williamsoni Smedley, 1932 -- valid -- Williamson's Reed Snake, Mountain Dwarf Snake
  Colobognathus brachycephalus Cope, 1871 -- invalid
  Colobognathus hoffmanni Peters, 1859 -- invalid
  Colophrys rhodogaster Cope, 1868 -- invalid
  Colorhogia redimita Cope, 1863 -- invalid
  Coluber aesculapii Linnaeus, 1758 -- invalid
  Coluber agilis Linnaeus, 1758 -- invalid
  Coluber ahaetulla Linnaeus, 1758 -- invalid
  Coluber algirus intermedius Werner, 1929 -- invalid
  Coluber alleghaniensis Holbrook, 1836 -- invalid
  Coluber ammodytes Linnaeus, 1758 -- invalid
  Coluber angulatus Linnaeus, 1758 -- invalid
  Coluber annulatus Linnaeus, 1758 -- invalid
  Coluber anomalus Boulenger, 1916 -- invalid
  Coluber anthonyi (Stejneger, 1901) -- valid -- Clarion Island Whip Snake, Culebra-chirriadora de Isla Clarion
  Coluber argenteus Daudin, 1803 -- invalid
  Coluber arnensis Shaw, 1802 -- invalid
  Coluber ashmeadii Hallowell, 1845 -- invalid
  Coluber aspis Linnaeus, 1758 -- invalid
  Coluber atayevi Tuniyev and Shammakov, 1993 -- invalid
  Coluber atratus Hallowell, 1845 -- invalid
  Coluber atropos Linnaeus, 1758 -- invalid
  Coluber atrox Linnaeus, 1758 -- invalid
  Coluber aulicus Linnaeus, 1758 -- invalid
  Coluber aurigulus (Cope, 1861) -- valid -- Baja California Striped Whip Snake, Culebra-chirriadora de Baja California
  Coluber aurigulus barbouri Van Denburgh and Slevin, 1921 -- invalid
  Coluber aurora Linnaeus, 1758 -- invalid
  Coluber bairdi Yarrow, 1880 -- invalid
  Coluber barbouri Van Denburgh and Slevin, 1921 -- valid -- Baja California Striped Whip Snake
  Coluber berus Linnaeus, 1758 -- invalid
  Coluber bholanathi Sharma, 1976 -- invalid
  Coluber bicarinatus Wied-Neuwied, 1820 -- invalid
  Coluber bicinctus Hermann, 1804 -- invalid
  Coluber bifossatus Raddi, 1820 -- invalid
  Coluber bilineatus (Jan, 1863) -- valid -- Sonoran Whipsnake, Culebra-chirriadora sonorense
  Coluber bilineatus slevini (Lowe and Norris, 1955) -- invalid
  Coluber boddaerti Sentzen, 1796 -- invalid
  Coluber bucephalus Shaw, 1802 -- invalid
  Coluber calamarius Linnaeus, 1758 -- invalid
  Coluber californiae Blainville, 1835 -- invalid
  Coluber candidus Linnaeus, 1758 -- invalid
  Coluber cantherigerus Bibron, 1840 -- invalid
  Coluber cantoris Boulenger, 1894 -- invalid
  Coluber canus Linnaeus, 1758 -- invalid
  Coluber carinatus Linnaeus, 1758 -- invalid
  Coluber carinicaudus Wied-Neuwied, 1825 -- invalid
  Coluber caspius Gmelin, 1789 -- invalid
  Coluber caspius eiselti Zinner, 1972 -- invalid
  Coluber catesbyi Sentzen, 1796 -- invalid
  Coluber cenchoa Linnaeus, 1758 -- invalid
  Coluber cerastes Linnaeus, 1758 -- invalid
  Coluber chesneii Martin, 1838 -- invalid
  Coluber clelia Daudin, 1803 -- invalid
  Coluber cliffordi Schlegel, 1837 -- invalid
  Coluber climacophorus H. Boie, 1826 -- invalid
  Coluber cobella Linnaeus, 1758 -- invalid
  Coluber collaris Ménétries, 1832 -- invalid
  Coluber compressus Daudin, 1803 -- invalid
  Coluber condanarus Merrem, 1820 -- invalid
  Coluber conspicillatus H. Boie, 1826 -- invalid
  Coluber constrictor Linnaeus, 1758 -- valid -- Racer, Culebra-corredora constrictor, Eastern Racer, North American Racer
  Coluber constrictor anthicus (Cope, 1862) -- valid -- Buttermilk Snake, Buttermilk Racer
  Coluber constrictor constrictor Linnaeus, 1758 -- valid -- Northern Black Racer
  Coluber constrictor etheridgei Wilson, 1970 -- valid -- Tan Racer
  Coluber constrictor flaviventris Say in James, 1823 -- valid -- Eastern Yellowbelly Racer, Yellowbelly Racer, Eastern Yellow-bellied Racer
  Coluber constrictor foxii (Baird and Girard, 1853) -- valid -- Blue Racer
  Coluber constrictor helvigularis Auffenberg, 1955 -- valid -- Brown Chin Racer, Brown-chinned Racer
  Coluber constrictor latrunculus Wilson, 1970 -- valid -- Black-masked Racer, Blackmask Racer
  Coluber constrictor mormon Baird and Girard, 1852 -- valid -- Western Yellow-bellied Racer
  Coluber constrictor oaxaca (Jan, 1863) -- valid -- Mexican Racer
  Coluber constrictor paludicola Auffenberg and Babitt, 1953 -- valid -- Everglades Racer
  Coluber constrictor priapus Dunn and Wood, 1939 -- valid -- Southern Black Racer
  Coluber crucifer Daudin, 1803 -- invalid
  Coluber cucullatus Geoffroy de St-Hilaire, 1827 -- invalid
  Coluber cursor Lacépède, 1789 -- invalid
  Coluber cypriensis Schätti, 1985 -- invalid
  Coluber dahlii Schinz, 1833 -- invalid
  Coluber dhara Forskal, 1775 -- invalid
  Coluber dhumnades Cantor, 1842 -- invalid
  Coluber diadema Schlegel, 1837 -- invalid
  Coluber digitalis Reuss, 1834 -- invalid
  Coluber dione Pallas, 1773 -- invalid
  Coluber edwardsii Merrem, 1820 -- invalid
  Coluber elegans Shaw, 1802 -- invalid
  Coluber enganensis Vinciguerra, 1892 -- invalid
  Coluber eques Reuss, 1834 -- invalid
  Coluber exoletus Linnaeus, 1758 -- invalid
  Coluber fasciolatus Shaw, 1802 -- invalid
  Coluber flagellum Shaw, 1802 -- valid -- Coachwhip, Culebra-chirriadora común
  Coluber flagellum cingulum (Lowe and Woodin, 1954) -- valid -- Sonoran Coachwhip
  Coluber flagellum flagellum Shaw, 1802 -- valid -- Eastern Coachwhip
  Coluber flagellum lineatulus (H. M. Smith, 1941) -- valid -- Lined Coachwhip
  Coluber flagellum piceus (Cope, 1892) -- valid -- Red Coachwhip, Red Racer
  Coluber flagellum ruddocki (Brattstrom and Warren, 1953) -- valid -- San Joaquin Coachwhip
  Coluber flagellum testaceus Say in James, 1823 -- valid -- Western Coachwhip
  Coluber flavirufus Cope, 1867 -- invalid
  Coluber flavolineatus Schlegel, 1837 -- invalid
  Coluber florulentus Geoffroy de St-Hilaire, 1827 -- invalid
  Coluber florulentus perreti Schätti, 1988 -- invalid
  Coluber formosus Wied-Neuwied, 1820 -- invalid
  Coluber fulgidus Daudin, 1803 -- invalid
  Coluber fuliginosus (Cope, 1895) -- valid -- Baja California Coachwhip
  Coluber fuliginosus Hallowell, 1845 -- invalid
  Coluber fulvius Linnaeus, 1766 -- invalid
  Coluber fuscus Linnaeus, 1758 -- invalid
  Coluber geminatus H. Boie, 1826 -- invalid
  Coluber getulus Linnaeus, 1766 -- invalid
  Coluber girondicus Daudin, 1803 -- invalid
  Coluber gramineus Shaw, 1802 -- invalid
  Coluber haemachates Bonnaterre, 1790 -- invalid
  Coluber haje Linnaeus, 1758 -- invalid
  Coluber halys Pallas, 1776 -- invalid
  Coluber helena Daudin, 1803 -- invalid
  Coluber helveticus Lacépède, 1789 -- invalid
  Coluber herbeus Wied-Neuwied, 1825 -- invalid
  Coluber hexagonotus Cantor, 1847 -- invalid
  Coluber hippocrepis Linnaeus, 1758 -- invalid
  Coluber hippocrepis nigrescens Cattaneo, 1985 -- invalid
  Coluber hohenackeri Strauch, 1873 -- invalid
  Coluber ikaheca Lesson in Duperrey, 1829 -- invalid
  Coluber insignitus Geoffroy de St-Hilaire, 1809 -- invalid
  Coluber insulanus Mertens, 1965 -- invalid
  Coluber irregularis Bechstein, 1802 -- invalid
  Coluber irregularis Leach, 1819 -- invalid
  Coluber irroratus Leach, 1819 -- invalid
  Coluber jara Shaw, 1802 -- invalid
  Coluber jugularis Linnaeus, 1758 -- invalid
  Coluber jugularis cypriacus Zinner, 1972 -- invalid
  Coluber karelini Brandt, 1838 -- invalid
  Coluber karelini mintonorum Mertens, 1969 -- invalid
  Coluber keniensis Parker, 1932 -- invalid
  Coluber korros Schlegel, 1837 -- invalid
  Coluber lacteus Linnaeus, 1758 -- invalid
  Coluber laevicollis Wied-Neuwied, 1824 -- invalid
  Coluber lanceolatus Bonnaterre, 1790 -- invalid
  Coluber largeni Schätti, 2001 -- invalid
  Coluber lateralis (Hallowell, 1853) -- valid -- Culebra-chirriadora rayada, Striped Racer
  Coluber lateralis euryxanthus (Riemer, 1954) -- valid -- Alameda Striped Racer
  Coluber lateralis lateralis (Hallowell, 1853) -- valid -- California Striped Racer
  Coluber laticaudatus Linnaeus, 1758 -- invalid
  Coluber lebetinus Linnaeus, 1758 -- invalid
  Coluber lemniscatus Linnaeus, 1758 -- invalid
  Coluber lentiginosus Scopoli, 1785 -- invalid
  Coluber lineatus Linnaeus, 1758 -- invalid
  Coluber lineolatus Brandt, 1838 -- invalid
  Coluber liocercus Wied-Neuwied, 1824 -- invalid
  Coluber longissimus persica Werner, 1913 -- invalid
  Coluber lutrix Linnaeus, 1758 -- invalid
  Coluber mandarinus Cantor, 1842 -- invalid
  Coluber manseri Leviton, 1986 -- invalid
  Coluber maurus Linnaeus, 1758 -- invalid
  Coluber melanocephalus Linnaeus, 1758 -- invalid
  Coluber melanotus Shaw, 1802 -- invalid
  Coluber melanurus Shaw, 1802 -- invalid
  Coluber mentovarius (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Culebra-chirriadora neotropical, Neotropical Whip Snake
  Coluber mentovarius centralis Roze, 1953 -- valid
  Coluber mentovarius mentovarius (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid
  Coluber mentovarius striolatus Mertens, 1934 -- valid
  Coluber mentovarius suborbitalis (Peters, 1869) -- valid
  Coluber mentovarius variolosus (H. M. Smith, 1943) -- valid
  Coluber merremii Wied-Neuwied, 1821 -- invalid
  Coluber messanai Schätti and Lanza, 1989 -- invalid
  Coluber miliaris Linnaeus, 1758 -- invalid
  Coluber miniatus Schlegel, 1837 -- invalid
  Coluber moilensis Reuss, 1834 -- invalid
  Coluber monspessulanus Hermann, 1804 -- invalid
  Coluber mucosus Linnaeus, 1758 -- invalid
  Coluber mutabilis Cope, 1885 -- invalid
  Coluber mycterizans Linnaeus, 1758 -- invalid
  Coluber naja Linnaeus, 1758 -- invalid
  Coluber najadum albitemporalis Darevsky and Orlov, 1994 -- invalid
  Coluber najadum kalymnensis B. Schneider, 1979 -- invalid
  Coluber nasicornis Shaw, 1802 -- invalid
  Coluber nasutus Lacépède, 1789 -- invalid
  Coluber natrix Linnaeus, 1758 -- invalid
  Coluber nebulatus Linnaeus, 1758 -- invalid
  Coluber nepa Laurenti, 1768 -- invalid
  Coluber nigromarginatus Blyth, 1854 -- invalid
  Coluber niveus Linnaeus, 1758 -- invalid
  Coluber nummifer Reuss, 1834 -- invalid
  Coluber nympha Daudin, 1803 -- invalid
  Coluber obtusus Reuss, 1834 -- invalid
  Coluber olfersii Lichtenstein, 1823 -- invalid
  Coluber ornatus Shaw, 1802 -- invalid
  Coluber oxycephalus F. Boie, 1827 -- invalid
  Coluber pallidus Linnaeus, 1758 -- invalid
  Coluber palmarum Leach, 1818 -- invalid
  Coluber pelias Linnaeus, 1758 -- invalid
  Coluber persa Pallas, 1814 -- invalid
  Coluber petola Linnaeus, 1758 -- invalid
  Coluber petolarius Linnaeus, 1758 -- invalid
  Coluber phillipsii Hallowell, 1844 -- invalid
  Coluber pictus Gmelin, 1789 -- invalid
  Coluber planiceps Blainville, 1835 -- invalid
  Coluber plicatilis Linnaeus, 1758 -- invalid
  Coluber plumbea Wied-Neuwied, 1820 -- invalid
  Coluber poecilogyrus Wied-Neuwied, 1825 -- invalid
  Coluber porphyraceus Cantor, 1839 -- invalid
  Coluber porphyriacus Shaw, 1794 -- invalid
  Coluber prasinus Blyth, 1854 -- invalid
  Coluber proximus Say in James, 1823 -- invalid
  Coluber pulcher Raddi, 1820 -- invalid
  Coluber pullatas Linnaeus, 1758 -- invalid
  Coluber punctatus Linnaeus, 1766 -- invalid
  Coluber quadrivirgatus H. Boie, 1826 -- invalid
  Coluber quatuorlineatus Bonnaterre, 1790 -- invalid
  Coluber quinquelineatus Raddi, 1820 -- invalid
  Coluber rabdocephalus Wied-Neuwied, 1824 -- invalid
  Coluber radiatus F. Boie, 1827 -- invalid
  Coluber ravergieri Ménétries, 1832 -- invalid
  Coluber ravergieri cernovi Mertens, 1952 -- invalid
  Coluber reginae Linnaeus, 1758 -- invalid
  Coluber rhombeatus Linnaeus, 1758 -- invalid
  Coluber rosaliae Mocquard, 1899 -- invalid
  Coluber rufulus Lichtenstein, 1823 -- invalid
  Coluber russelii Shaw and Nodder, 1797 -- invalid
  Coluber saurita Linnaeus, 1766 -- invalid
  Coluber sauromates Pallas, 1811 -- invalid
  Coluber sayi Schlegel, 1837 -- invalid
  Coluber scaber Linnaeus, 1758 -- invalid
  Coluber scalaris Schinz, 1822 -- invalid
  Coluber schistosus Daudin, 1803 -- invalid
  Coluber schmackeri Boettger, 1895 -- invalid
  Coluber schmidti Nikolsky, 1909 -- invalid
  Coluber schmidtleri Schätti and McCarthy, 2001 -- invalid
  Coluber schokari Forskal, 1775 -- invalid
  Coluber schotti (Baird and Girard, 1853) -- valid -- Schott's Whipsnake
  Coluber schotti ruthveni (Ortenburger, 1923) -- valid -- Ruthven's Whipsnake
  Coluber schotti schotti (Baird and Girard, 1853) -- valid -- Schott's Whipsnake
  Coluber scortecci Lanza, 1963 -- invalid
  Coluber scutatus Pallas, 1771 -- invalid
  Coluber severus Linnaeus, 1758 -- invalid
  Coluber sibilans Linnaeus, 1758 -- invalid
  Coluber siculus Cuvier, 1829 -- invalid
  Coluber sinai (Schmidt and Marx, 1956) -- invalid
  Coluber situla Linnaeus, 1758 -- invalid
  Coluber slevini (Lowe and Norris, 1955) -- valid
  Coluber smithii Leach, 1818 -- invalid
  Coluber smythii Leach, 1818 -- invalid
  Coluber spixii Hallowell, 1845 -- invalid
  Coluber stolatus Linnaeus, 1758 -- invalid
  Coluber striatulus Linnaeus, 1766 -- invalid
  Coluber striatus Shaw, 1802 -- invalid
  Coluber striolatus Mertens, 1934 -- invalid
  Coluber subradiatus Schlegel, 1837 -- invalid
  Coluber sumatranus Raffles, 1822 -- invalid
  Coluber taeniatus (Hallowell, 1852) -- valid -- Culebra-chirriadora adornada, Striped Whipsnake
  Coluber taeniatus girardi Stejneger and Barbour, 1917 -- valid -- Central Texas Whipsnake
  Coluber taeniatus taeniatus (Hallowell, 1852) -- valid -- Desert Striped Whipsnake
  Coluber taeniurus friesi Werner, 1927 -- invalid
  Coluber taeniurus ridleyi Butler, 1899 -- invalid
  Coluber tauricus Werner, 1898 -- invalid
  Coluber taxispilotus Holbrook, 1838 -- invalid
  Coluber taylori Parker, 1949 -- invalid
  Coluber thomasi Parker, 1931 -- invalid
  Coluber trigonatus Schneider, 1802 -- invalid
  Coluber triscalis Linnaeus, 1758 -- invalid
  Coluber tristis Daudin, 1803 -- invalid
  Coluber typhlus Linnaeus, 1758 -- invalid
  Coluber undulatus Wied-Neuwied, 1824 -- invalid
  Coluber ventromaculatus Gray, 1834 -- invalid
  Coluber venustissimus Wied-Neuwied, 1821 -- invalid
  Coluber vertebralis Blainville, 1835 -- invalid
  Coluber vipera Linnaeus, 1758 -- invalid
  Coluber viridiflavus carbonarius Bonaparte, 1833 -- invalid
  Coluber viridissimus Linnaeus, 1758 -- invalid
  Coluber vittacaudatus Blyth, 1854 -- invalid
  Coluber vittatus Linnaeus, 1758 -- invalid
  Coluber zebrinus Broadley and Schätti, 2000 -- invalid
  Colubrinae Oppel, 1811 -- valid
  Colubroelaps nguyenvansangi Orlov, Kharin, Ananjeva, T. T. Nguyen and T. Q. Nguyen, 2009 -- valid -- Nguyenvansang's Snake
  Complicitus Manthey and Grossmann, 1997 -- valid
  Complicitus nigrigularis (Ota and Hikida, 1991) -- valid -- Blackthroated Bloodsucker
  Compsophis albiventris Mocquard, 1894 -- valid -- Madagascar Bighead Snake
  Compsophis boulengeri (Peracca, 1892) -- valid -- Boulenger's Forest Snake
  Compsophis fatsibe (Mercurio and Andreone, 2005) -- valid
  Compsophis infralineatus (Günther, 1882) -- valid -- Lined Forest Snake
  Compsophis laphystius (Cadle, 1996) -- valid
  Compsophis vinckei (Domergue, 1988) -- valid
  Compsophis zeny (Cadle, 1996) -- valid
  Coniophanes alvarezi Campbell, 1989 -- valid -- Culebra sin rayas-chiapaneca, Chiapan Stripeless Snake
  Coniophanes andresensis Bailey, 1937 -- valid -- San Andres Snake
  Coniophanes bipunctatus (Günther, 1858) -- valid -- Culebra dos puntos, Two-spotted Snake
  Coniophanes bipunctatus bipunctatus (Günther, 1858) -- valid
  Coniophanes bipunctatus biseriatus H. M. Smith, 1940 -- valid
  Coniophanes dromiciformis (Peters, 1863) -- valid -- Peters' Running Snake
  Coniophanes fissidens (Günther, 1858) -- valid -- Culebra vientre amarillo, Yellowbelly Snake
  Coniophanes fissidens andresensis Bailey, 1937 -- invalid
  Coniophanes fissidens convergens Shannon and H. M. Smith, 1950 -- valid
  Coniophanes fissidens dispersus H. M. Smith, 1941 -- valid
  Coniophanes fissidens fissidens (Günther, 1858) -- valid
  Coniophanes fissidens proterops Cope, 1860 -- valid
  Coniophanes fissidens punctigularis Cope, 1860 -- valid
  Coniophanes frangivirgatus Peters, 1950 -- invalid
  Coniophanes imperialis (Kennicott in Baird, 1859) -- valid -- Regal Black-striped Snake, Culebra rayas negras, Black-striped Snake
  Coniophanes imperialis clavatus (Peters, 1864) -- valid
  Coniophanes imperialis copei Hartweg and Oliver, 1938 -- valid
  Coniophanes imperialis imperialis (Kennicott in Baird, 1859) -- valid -- Tamaulipan Black-striped Snake
  Coniophanes joanae Myers, 1966 -- valid
  Coniophanes lateritius Cope, 1862 -- valid -- Culebra sin rayas, Stripeless Snake
  Coniophanes longinquus Cadle, 1989 -- valid
  Coniophanes melanocephalus (Peters, 1869) -- valid
  Coniophanes meridanus Schmidt and Andrews, 1936 -- valid -- Culebra sin rayas-peninsular, Peninsula Stripeless Snake
  Coniophanes michoacanensis Flores-Villela and E. N. Smith, 2009 -- valid
  Coniophanes piceivittis Cope, 1869 -- valid -- Culebra rayada-de Cope, Cope's Black-striped Snake
  Coniophanes piceivittis frangivirgatus Peters, 1950 -- valid
  Coniophanes piceivittis piceivittis Cope, 1869 -- valid
  Coniophanes proterops Cope, 1860 -- invalid
  Coniophanes punctigularis Cope, 1860 -- invalid
  Coniophanes quinquevittatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Culebra rayada-escofinada, Fife-striped Snake
  Coniophanes sarae Ponce-Campos and H. M. Smith, 2001 -- valid
  Coniophanes schmidti Bailey, 1937 -- valid -- Faded Black-striped Snake
  Coniophanes taylori Hall, 1951 -- valid
  Conolophus marthae Gentile and Snell, 2009 -- valid -- Pink Land Iguana, Galapagos Pink Land Iguana
  Conolophus pallidus Heller, 1903 -- valid -- Barrington Island Iguana, Barrington Land Iguana, Santa Fe Land Iguana
  Conolophus subcristatus (Gray, 1831) -- valid -- Galapagos Land Iguana
  Conophis biserialis Taylor and H. M. Smith, 1942 -- invalid
  Conophis concolor Cope, 1867 -- invalid
  Conophis lineatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Culebra-guardacaminos lineada, Road Guarder
  Conophis lineatus concolor Cope, 1867 -- valid
  Conophis lineatus dunni H. M. Smith, 1942 -- invalid
  Conophis lineatus lineatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid
  Conophis morai Perez-Higareda, Lopez-Luna and H. M. Smith, 2002 -- valid
  Conophis nevermanni Dunn, 1937 -- invalid
  Conophis vittatus Peters, 1860 -- valid -- Culebra-guardacaminos rayada, Striped Road Guarder
  Conophis vittatus viduus (Cope, 1876) -- invalid
  Conopsis acuta (Cope, 1886) -- valid
  Conopsis amphisticha (H. M. Smith and Laufe, 1945) -- valid -- Twin-spotted Tolucan Ground Snake, Culebra-toluqueña manchas gemelas
  Conopsis biserialis (Taylor and H. M. Smith, 1942) -- valid -- Culebra-terrestre dos líneas, Two-lined Mexican Earth Snake
  Conopsis lineata (Kennicott, 1859) -- valid -- Culebra-toluqueña lineada, Lined Tolucan Ground Snake, Lined Tolucan Earthsnake
  Conopsis megalodon (Taylor and H. M. Smith, 1942) -- valid -- San Felipe Ground Snake, Culebra-toluqueña de San Felipe
  Conopsis nasus Günther, 1858 -- valid -- Culebra-terrestre narigona, Largenose Earth Snake
  Conopsis nasus labialis Tanner, 1961 -- valid
  Conopsis nasus nasus Günther, 1858 -- valid
  Contia africana Boulenger, 1914 -- invalid
  Contia bicolor Nikolsky, 1903 -- invalid
  Contia calligaster Cope, 1876 -- invalid
  Contia collaris aurolineata Venzmer, 1919 -- invalid
  Contia collaris macrospilota Werner, 1904 -- invalid
  Contia condoni Boulenger, 1920 -- invalid
  Contia longicaudae Feldman and Hoyer, 2010 -- invalid -- Forest Sharp-tailed Snake
  Contia meda Chernov, 1940 -- invalid
  Contia michoacanensis Dugès, 1884 -- invalid
  Contia pachyura Cope, 1875 -- invalid
  Contia persica nigrofasciata Nikolsky, 1907 -- invalid
  Contia satunini Nikolsky, 1899 -- invalid
  Contia taylori Boulenger, 1894 -- invalid
  Contia tenuis (Baird and Girard, 1852) -- valid -- Sharp-tailed Snake, Sharptail Snake, Common Sharp-tailed Snake
  Cophias bilineatus Wied-Neuwied, 1821 -- invalid
  Cophias hypnale Merrem, 1820 -- invalid
  Cophias jararaca Wied-Neuwied, 1824 -- invalid
  Cophias punicea F. Boie, 1827 -- invalid
  Cophias wagleri F. Boie, 1827 -- invalid
  Cophosaurus Troschel, 1852 -- valid -- Greater Earless Lizards
  Cophosaurus texanus Troschel, 1852 -- valid -- Greater Earless Lizard, Lagartija-sorda mayor, Texas Greater Earless Lizard
  Cophosaurus texanus reticulatus (J. A. Peters, 1951) -- valid
  Cophosaurus texanus scitulus (J. A. Peters, 1951) -- valid -- Southwestern Earless Lizard, Chihuahuan Greater Earless Lizard
  Cophosaurus texanus texanus Troschel, 1852 -- valid -- Texas Earless Lizard
  Cophotis ceylanica W. C. H. Peters, 1861 -- valid -- Ceylon Deaf Agama
  Cophotis dumbara Samarawickrama, Ranawana, Rajapaksha, Ananjeva, Orlov, Ranasinghe and Samarawickrama, 2006 -- valid -- Dumbara Agama
  Coronelaps lepidus (Reinhardt, 1861) -- valid -- Minas Gerais Snake, Crowned Burrowing Snake
  Coronella albocincta Cantor, 1839 -- invalid
  Coronella anomala Günther, 1858 -- invalid
  Coronella austriaca Laurenti, 1768 -- valid -- Smooth Snake
  Coronella austriaca acutirostris Malkmus, 1995 -- valid
  Coronella austriaca austriaca Laurenti, 1768 -- valid
  Coronella bachmanni Weyenberg, 1876 -- invalid
  Coronella baliodeira F. Boie, 1827 -- invalid
  Coronella bella Stanley, 1917 -- invalid
  Coronella bipunctatus Günther, 1858 -- invalid
  Coronella brachyura (Günther, 1866) -- valid -- Indian Smooth Snake
  Coronella brevis Günther, 1862 -- invalid
  Coronella cervina Laurenti, 1768 -- invalid
  Coronella chamissonis Wiegmann, 1835 -- invalid
  Coronella chilensis Schlegel, 1837 -- invalid
  Coronella cyclura Cantor, 1839 -- invalid
  Coronella decorata Günther, 1858 -- invalid
  Coronella fissidens Günther, 1858 -- invalid
  Coronella formosa abnorma Bocourt, 1886 -- invalid
  Coronella fuliginoides Günther, 1858 -- invalid
  Coronella girondica (Daudin, 1803) -- valid -- Southern Smooth Snake
  Coronella girondica amaliae (Boettger, 1881) -- valid
  Coronella girondica girondica (Daudin, 1803) -- valid
  Coronella hotamboeia Laurenti, 1768 -- invalid
  Coronella jaegeri Günther, 1858 -- invalid
  Coronella modesta Martin, 1838 -- invalid
  Coronella multimaculata A. Smith, 1847 -- invalid
  Coronella nototaenia Günther, 1864 -- invalid
  Coronella olivacea Peters, 1854 -- invalid
  Coronella plumbiceps Boettger, 1893 -- invalid
  Coronella semiornata Peters, 1854 -- invalid
  Coronella taeniolata Jerdon, 1853 -- invalid
  Coronella tessellata Laurenti, 1768 -- invalid
  Coronella torquata Boulenger, 1888 -- invalid
  Coryphodon alternatus Bocourt, 1884 -- invalid
  Coryphodon carinatus Günther, 1858 -- invalid
  Coryphodon fuscus Günther, 1858 -- invalid
  Coryphodon mentovarius A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Coryphodon oaxaca Jan, 1863 -- invalid
  Coryphodon rhombifer Günther, 1860 -- invalid
  Coryphophylax Fitzinger, 1867 -- valid
  Coryphophylax brevicaudus Harikrishnan, Vasudevan, Chandramouli, Choudhury, Dutta and Das, 2012 -- valid -- Short-tailed Bay Island forest lizard
  Coryphophylax subcristatus (Blyth, 1860) -- valid -- Short-crested Bay Island Forest Lizard
  Corytophanes F. Boie in Schlegel, 1826 -- valid
  Corytophanes cristatus (Merrem, 1821) -- valid -- Turipache cabeza lisa, Smooth Helmeted Iguana
  Corytophanes hernandesii (Wiegmann, 1831) -- valid -- Hernandez's Helmeted Basilisk, Turipache de Montaña
  Corytophanes percarinatus A. H. A. Duméril, 1856 -- valid -- Turipache aquillado, Keeled Helmeted Iguana, Keeled Helmeted Basilisk
  Craspedocephalus elegans Gray, 1849 -- invalid
  Crisantophis nevermanni (Dunn, 1937) -- valid -- Dunn's Road Guarder
  Crotalinus viridis Rafinesque, 1818 -- invalid
  Crotalus adamanteus Palisot de Beauvois, 1799 -- valid -- Eastern Diamondback Rattlesnake, Eastern Diamond-backed Rattlesnake
  Crotalus angelensis Klauber, 1963 -- valid -- Isla Angel Rattlesnake
  Crotalus aquilus Klauber, 1952 -- valid -- Queretaran Dusky Rattlesnake
  Crotalus armstrongi Campbell, 1979 -- valid -- Mexican Dusky Rattlesnake
  Crotalus atrox Baird and Girard, 1853 -- valid -- Western Diamondback Rattlesnake, Western Diamond-backed Rattlesnake, Víbora-cascabel de diamantes
  Crotalus basiliscus (Cope, 1864) -- valid -- Víbora-cascabel de Saye
  Crotalus basiliscus oaxacus Gloyd, 1948 -- invalid
  Crotalus campbelli Bryson Jr, Linkem, Dorcas, Lathrop, Jones, Alvarado-Díaz, Grünwald and Murphy, 2014 -- valid
  Crotalus catalinensis Cliff, 1954 -- valid -- Víbora-cascabel muda
  Crotalus cerastes Hallowell, 1854 -- valid -- Sidewinder, Víbora-cascabel cornuda
  Crotalus cerastes cerastes Hallowell, 1854 -- valid -- Mojave Desert Sidewinder, Mohave Desert Sidewinder
  Crotalus cerastes cercobombus Savage and Cliff, 1953 -- valid -- Sonoran Sidewinder, Sonoran Desert Sidewinder
  Crotalus cerastes laterorepens Klauber, 1944 -- valid -- Colorado Desert Sidewinder
  Crotalus cerberus (Coues in Wheeler, 1875) -- valid -- Arizona Black Rattlesnake
  Crotalus culminatus Klauber, 1952 -- valid -- Northwestern Neotropical Rattlesnake
  Crotalus cumanensis Humboldt, 1811 -- invalid
  Crotalus durissus Linnaeus, 1758 -- valid -- South American Rattlesnake, Víbora-cascabel tropical, Cascabel Rattlesnake, Central American Rattlesnake
  Crotalus durissus cumanensis Humboldt, 1811 -- valid
  Crotalus durissus durissus Linnaeus, 1758 -- valid
  Crotalus durissus marajoensis Hoge, 1966 -- valid
  Crotalus durissus ruruima Hoge, 1966 -- valid
  Crotalus durissus terrificus (Laurenti, 1768) -- valid
  Crotalus durissus trigonicus Harris and Simmons, 1978 -- valid -- Rupununi Savanna Rattlesnake
  Crotalus durissus unicolor Van Lidth de Jeude, 1887 -- valid -- Aruba Island Rattlesnake
  Crotalus durissus vegrandis Klauber, 1941 -- invalid
  Crotalus enyo (Cope, 1861) -- valid -- Víbora-cascabel bajacaliforniana, Baja California Rattlesnake, Lower California Rattlesnake
  Crotalus enyo cerralvensis Cliff, 1954 -- valid -- Cerralvo Rattlesnake
  Crotalus enyo enyo (Cope, 1861) -- valid -- Baja California Rattlesnake
  Crotalus enyo furvus Lowe and Norris, 1954 -- valid -- Rosario Rattlesnake
  Crotalus ericsmithi Campbell and Flores-Villela, 2008 -- valid -- Guerreran Long-tailed Rattlesnake
  Crotalus horridus Linnaeus, 1758 -- valid -- Timber Rattlesnake, crotale des bois
  Crotalus intermedius Troschel, 1865 -- valid -- Víbora-cascabel enana, Mexican Smallhead Rattlesnake
  Crotalus intermedius gloydi Taylor, 1941 -- valid
  Crotalus intermedius intermedius Troschel in Müller, 1865 -- valid
  Crotalus intermedius omiltemanus Günther, 1895 -- valid
  Crotalus lannomi Tanner, 1966 -- valid -- Víbora-cascabel de Autlán, Autlán Long-tailed Rattlesnake, Manantlán Long-tailed Rattlesnake
  Crotalus lepidus (Kennicott, 1861) -- valid -- Rock Rattlesnake, Víbora-cascabel variable
  Crotalus lepidus klauberi Gloyd, 1936 -- valid -- Banded Rock Rattlesnake
  Crotalus lepidus lepidus (Kennicott, 1861) -- valid -- Mottled Rock Rattlesnake
  Crotalus lepidus maculosus Tanner, Dixon and Harris, 1972 -- valid -- Durangan Rock Rattlesnake
  Crotalus lepidus morulus Klauber, 1952 -- invalid
  Crotalus lorenzoensis Radcliffe and Maslin, 1975 -- valid -- San Lorenzo Island Rattlesnake
  Crotalus lucasensis Van Denburgh, 1920 -- invalid
  Crotalus mitchellii (Cope, 1861) -- valid -- Speckled Rattlesnake
  Crotalus mitchellii angelensis Klauber, 1963 -- invalid
  Crotalus mitchellii mitchellii (Cope, 1861) -- invalid -- Speckled Rattlesnake
  Crotalus mitchellii muertensis Klauber, 1949 -- invalid
  Crotalus mitchellii pyrrhus (Cope, 1867) -- invalid -- Southwestern Speckled Rattlesnake
  Crotalus molossus Baird and Girard, 1853 -- valid -- Black-tailed Rattlesnake, Víbora-cascabel cola negra, Western Black-tailed Rattlesnake
  Crotalus molossus estebanensis Klauber, 1949 -- valid
  Crotalus molossus molossus Baird and Girard, 1853 -- valid -- Black-tailed Rattlesnake
  Crotalus molossus nigrescens Gloyd, 1936 -- valid -- Mexican Black-tailed Rattlesnake
  Crotalus molossus oaxacus Gloyd, 1948 -- valid -- Oaxacan Black-tailed Rattlesnake
  Crotalus morulus Klauber, 1952 -- valid -- Tamaulipan Rock Rattlesnake
  Crotalus mutus Linnaeus, 1766 -- invalid
  Crotalus omiltemanus Günther, 1895 -- invalid
  Crotalus oreganus Holbrook, 1840 -- valid -- Western Rattlesnake, Northern Pacific Rattlesnake
  Crotalus oreganus abyssus Klauber, 1930 -- valid -- Grand Canyon Rattlesnake
  Crotalus oreganus caliginis Klauber, 1949 -- valid
  Crotalus oreganus concolor Woodbury, 1929 -- valid -- Midget Faded Rattlesnake
  Crotalus oreganus helleri Meek, 1905 -- valid -- Southern Pacific Rattlesnake
  Crotalus oreganus lutosus Klauber, 1930 -- valid -- Great Basin Rattlesnake
  Crotalus oreganus oreganus Holbrook, 1840 -- valid -- Northern Pacific Rattlesnake
  Crotalus ornatus Hallowell, 1854 -- valid -- Eastern Black-tailed Rattlesnake
  Crotalus polystictus (Cope, 1865) -- valid -- Víbora-cascabel ocelada, Mexican Lancehead Rattlesnake
  Crotalus pricei Van Denburgh, 1895 -- valid -- Twin-spotted Rattlesnake, Víbora-cascabel motas gemelas
  Crotalus pricei miquihuanus Gloyd, 1940 -- valid -- Eastern Twin Spotted Rattlesnake
  Crotalus pricei pricei Van Denburgh, 1895 -- valid -- Western Twin Spotted Rattlesnake, Arizona Twin Spotted Rattlesnake, Western Twin-spotted Rattlesnake
  Crotalus pusillus Klauber, 1952 -- valid -- Víbora-cascabel de Tancítaro, Tancitaran Dusky Rattlesnake
  Crotalus pyrrhus (Cope, 1867) -- valid -- Southwestern Speckled Rattlesnake
  Crotalus ravus Cope, 1865 -- valid -- Víbora-cascabel pigmea-mexicana, Mexican Pygmy Rattlesnake
  Crotalus ravus brunneus Harris and Simmons, 1978 -- valid -- Oaxacan Pygmy Rattlesnake
  Crotalus ravus exiguus (Campbell and Armstrong, 1979) -- valid -- Guerreran Pygmy Rattlesnake
  Crotalus ravus ravus Cope, 1865 -- valid -- Central Plateau Pygmy Rattlesnake
  Crotalus ruber Cope, 1892 -- valid -- Red Diamond Rattlesnake, Víbora-cascabel colorada
  Crotalus ruber exsul Garman, 1884 -- valid -- Cedros Island Rattlesnake, Víbora-cascabel de Isla Cedros, Red Diamond Rattlesnake
  Crotalus ruber lorenzoensis Radcliffe and Maslin, 1975 -- invalid
  Crotalus ruber lucasensis Van Denburgh, 1920 -- valid -- San Lucan Rattlesnake
  Crotalus ruber ruber Cope, 1892 -- valid -- Red Diamond Rattlesnake
  Crotalus salvini Günther, 1895 -- invalid
  Crotalus scutulatus (Kennicott, 1861) -- valid -- Mojave Rattlesnake, Mohave Rattlesnake, Víbora-cascabel del Altiplano, Green Rattlesnake
  Crotalus scutulatus salvini Günther, 1895 -- valid -- Huamantlan Rattlesnake
  Crotalus scutulatus scutulatus (Kennicott, 1861) -- valid -- Mojave Rattlesnake, Northern Mohave Rattlesnake
  Crotalus simus Latreille in Sonnini and Latreille, 1801 -- valid -- Middle American Rattlesnake
  Crotalus stejnegeri Dunn, 1919 -- valid -- Víbora-cascabel cola larga, Sinaloan Long-tailed Rattlesnake
  Crotalus stephensi Klauber, 1930 -- valid -- Panamint Rattlesnake
  Crotalus tancitarensis Alvarado-Díaz and Campbell, 2004 -- valid
  Crotalus tigris Kennicott, 1859 -- valid -- Tiger Rattlesnake, Víbora-cascabel tigre
  Crotalus tlaloci Bryson Jr, Linkem, Dorcas, Lathrop, Jones, Alvarado-Díaz, Grünwald and Murphy, 2014 -- valid
  Crotalus tortugensis Van Denburgh and Slevin, 1921 -- invalid -- Víbora-cascabel de Isla Tortuga, Tortuga Island Rattlesnake
  Crotalus totonacus Gloyd and Kauffeld, 1940 -- valid -- Totonacan Rattlesnake
  Crotalus transversus Taylor, 1944 -- valid -- Víbora-cascabel bandas cruzadas, Cross-banded Mountain Rattlesnake
  Crotalus triseriatus (Wagler, 1830) -- valid -- Víbora-cascabel transvolcánica, Western Dusky Rattlesnake, Central Plateau Dusky Rattlesnake
  Crotalus triseriatus aquilus Klauber, 1952 -- invalid
  Crotalus triseriatus armstrongi Campbell, 1979 -- invalid
  Crotalus triseriatus gloydi Taylor, 1941 -- invalid
  Crotalus triseriatus miquihuanus Gloyd, 1940 -- invalid
  Crotalus triseriatus triseriatus (Wagler, 1830) -- invalid
  Crotalus tzabcan Klauber, 1952 -- valid -- Yucatan Neotropical Rattlesnake
  Crotalus vegrandis Klauber, 1941 -- valid -- Uracoan Rattlesnake
  Crotalus viridis (Rafinesque, 1818) -- valid -- Western Rattlesnake, Prairie Rattlesnake, Víbora-cascabel occidental
  Crotalus viridis nuntius Klauber, 1935 -- valid -- Hopi Rattlesnake
  Crotalus viridis viridis (Rafinesque, 1818) -- valid -- Prairie Rattlesnake
  Crotalus willardi Meek, 1905 -- valid -- Ridge-nosed Rattlesnake, Víbora-cascabel bigotuda
  Crotalus willardi amabilis J. D. Anderson, 1962 -- valid -- Del Nido Ridge-nosed Rattlesnake
  Crotalus willardi meridionalis Klauber, 1949 -- valid -- Southern Ridge-nosed Rattlesnake
  Crotalus willardi obscurus Harris and Simmons, 1974 -- valid -- Animas Ridge-nosed Rattlesnake, New Mexico Ridgenose Rattlesnake, New Mexico Ridge-Nosed Rattlesnake
  Crotalus willardi silus Klauber, 1949 -- valid -- Western Chihuahuan Ridge-nosed Rattlesnake
  Crotalus willardi willardi Meek, 1905 -- valid -- Arizona Ridgenose Rattlesnake, Arizona Ridge-Nosed Rattlesnake
  Crotaphopeltis barotseensis Broadley, 1968 -- valid -- Barotse Water Snake
  Crotaphopeltis braestrupi Rasmussen, 1985 -- valid
  Crotaphopeltis degeni (Boulenger, 1906) -- valid -- Degen's Herald Snake, Yellow-flanked Snake
  Crotaphopeltis hippocrepis (Reinhardt, 1843) -- valid
  Crotaphopeltis hotamboeia (Laurenti, 1768) -- valid -- Red-lipped Snake, White-lipped Herald Snake
  Crotaphopeltis hotamboiea kageleri Uthmöller, 1939 -- invalid
  Crotaphopeltis punctata Peters, 1866 -- invalid
  Crotaphopeltis shrevei Loveridge, 1932 -- invalid
  Crotaphopeltis tornieri (Werner, 1908) -- valid -- Werner's Water Snake
  Crotaphytus antiquus R. W. Axtell and Webb, 1995 -- valid
  Crotaphytus bicinctores N. M. Smith and Tanner, 1972 -- valid -- Great Basin Collared Lizard, Mojave Black-collared Lizard, Desert Collared Lizard
  Crotaphytus collaris (Say in James, 1823) -- valid -- Collared Lizard, Eastern Collared Lizard, Lagartija-de collar común
  Crotaphytus collaris auriceps Fitch and Tanner, 1951 -- valid -- Yellow-headed Collared Lizard
  Crotaphytus collaris baileyi Stejneger, 1890 -- valid -- Western Collared Lizard
  Crotaphytus collaris collaris (Say in James, 1823) -- valid -- Eastern Collared Lizard
  Crotaphytus collaris fuscus Ingram and Tanner, 1971 -- valid -- Chihuahuan Collared Lizard
  Crotaphytus collaris melanomaculatus Axtell and Webb, 1995 -- valid
  Crotaphytus dickersonae K. P. Schmidt, 1922 -- valid
  Crotaphytus insularis Van Denburgh and Slevin, 1921 -- valid -- Black-collared Lizard, Desert Collared Lizard, Lagartija-de collar negra, Eastern Collared Lizard
  Crotaphytus nebrius R. W. Axtell and Montanucci, 1977 -- valid -- Sonoran Collared Lizard
  Crotaphytus reticulatus Baird, 1859 -- valid -- Reticulate Collared Lizard, Lagartija-de collar reticulada
  Crotaphytus vestigium N. M. Smith and Tanner, 1972 -- valid -- Baja California Collared Lizard, Baja Black-collared Lizard
  Cryophis hallbergi Bogert and Duellman, 1963 -- valid -- Culebra-de nebklina de Hallberg, Hallberg's Cloud Forest Snake
  Cryptagama Witten, 1984 -- valid
  Cryptagama aurita (Storr, 1981) -- valid -- Gravel Dragon
  Cryptelytrops cardamomensis Malhotra, Thorpe, Mrinalini and Stuart, 2011 -- invalid
  Cryptelytrops honsonensis L. L. Grismer, Ngo and J. L. Grismer, 2008 -- invalid
  Cryptelytrops rubeus Malhotra, Thorpe, Mrinalini and Stuart, 2011 -- invalid
  Cryptodacus vittatus Gundlach, 1861 -- invalid
  Cryptolycus nanus Broadley, 1958 -- invalid
  Cryptophis Worrell, 1961 -- valid
  Cryptophis boschmai (Brongersma and Knaap-van Meeuwen, 1964) -- valid -- Carpentaria Whip Snake
  Cryptophis incredibilis (Wells and Wellington, 1985) -- valid
  Cryptophis nigrescens (Günther, 1862) -- valid -- Eastern Small-eyed Snake, Small-eyed Snake, Short-tailed Snake
  Cryptophis nigrostriatus (Krefft, 1864) -- valid -- Black-striped Snake
  Cryptophis pallidiceps (Günther, 1858) -- valid -- Western Carpentaria Snake, Northern Small-eyed Snake
  Ctenoblepharys Tschudi, 1845 -- valid
  Ctenoblepharys adspersa Tschudi, 1845 -- valid
  Ctenophorus Fitzinger, 1843 -- valid
  Ctenophorus adelaidensis (Gray, 1841) -- valid -- Western Heath Dragon
  Ctenophorus butleri (Storr, 1977) -- invalid
  Ctenophorus butlerorum (Storr, 1977) -- valid
  Ctenophorus caudicinctus (Günther, 1875) -- valid -- Ring-tailed Bicycle-dragon, Ring-tailed Dragon
  Ctenophorus caudicinctus caudicinctus (Günther, 1875) -- valid
  Ctenophorus caudicinctus graafi (Storr, 1967) -- valid
  Ctenophorus caudicinctus infans (Storr, 1967) -- valid
  Ctenophorus caudicinctus macropus (Storr, 1967) -- valid
  Ctenophorus caudicinctus mensarum (Storr, 1967) -- valid
  Ctenophorus caudicinctus slateri (Storr, 1967) -- valid
  Ctenophorus chapmani (Storr, 1977) -- valid -- Bight Heath Dragon
  Ctenophorus clayi (Storr, 1967) -- valid -- Black-shouldered Ground-dragon
  Ctenophorus cristatus (Gray, 1841) -- valid -- Crested Bicycle-dragon, Crested Dragon
  Ctenophorus decresii (A. M. C. Duméril and Bibron, 1837) -- valid -- Tawny Dragon, Tawny Crevice-dragon
  Ctenophorus femoralis (Storr, 1965) -- valid -- Long-tailed Sand-dragon
  Ctenophorus fionni (Proctor, 1923) -- valid -- Peninsula Crevice-dragon, Peninsula Dragon
  Ctenophorus fordi (Storr, 1965) -- valid -- Mallee Dragon, Mallee Sand-dragon
  Ctenophorus gibba (Houston, 1974) -- valid -- Bulldust Ground-dragon
  Ctenophorus isolepis (Fischer, 1881) -- valid -- Military Sand-dragon, Military Dragon
  Ctenophorus isolepis citrinus (Storr, 1965) -- valid
  Ctenophorus isolepis gularis (Sternfeld, 1925) -- valid
  Ctenophorus isolepis isolepis (Fischer, 1881) -- valid
  Ctenophorus maculatus (Gray, 1831) -- valid -- Spotted Dragon, Spotted Sand-dragon
  Ctenophorus maculatus badius (Storr, 1965) -- valid
  Ctenophorus maculatus dualis (Storr, 1965) -- valid
  Ctenophorus maculatus griseus (Storr, 1965) -- valid
  Ctenophorus maculatus maculatus (Gray, 1831) -- valid
  Ctenophorus maculosus (Mitchell, 1948) -- valid -- Salt-Lake Ground-dragon, Lake Eyre Dragon
  Ctenophorus mckenziei (Storr, 1981) -- valid -- Dwarf Bicycle-dragon
  Ctenophorus mirrityana McLean, Moussalli, Saas and Stuart-Fox, 2013 -- valid -- Barrier Range Dragon
  Ctenophorus nguyarna Doughty, Maryan, Melville and Austin, 2007 -- valid -- Lake Disappointment Dragon
  Ctenophorus nuchalis (De Vis, 1884) -- valid -- Central Netted Ground-dragon, Central Netted Dragon
  Ctenophorus ornatus (Gray, 1845) -- valid -- Ornate Dragon, Ornate Crevice-dragon
  Ctenophorus parviceps (Storr, 1964) -- valid -- Gnaraloo Heath Dragon
  Ctenophorus pictus (W. C. H. Peters, 1866) -- valid -- Painted Ground-dragon, Painted Dragon
  Ctenophorus reticulatus (Gray, 1845) -- valid -- Western Netted Dragon, Western Netted Ground-dragon
  Ctenophorus rubens (Storr, 1965) -- valid -- Reddening Sand-dragon
  Ctenophorus rufescens (Stirling and Zietz, 1893) -- valid -- Rusty Crevice-dragon
  Ctenophorus salinarum (Storr, 1966) -- valid -- Saltpan Ground-dragon
  Ctenophorus scutulatus (Stirling and Zietz, 1893) -- valid -- Lozenge-marked Bicycle-dragon, Lozenge-marked Dragon
  Ctenophorus tjantjalka Johnston, 1992 -- valid
  Ctenophorus vadnappa Houston, 1974 -- valid -- Red-barred Crevice-dragon
  Ctenophorus yinnietharra (Storr, 1981) -- valid -- Yinnietharra Crevice-dragon
  Ctenosaura acanthura (Shaw, 1802) -- valid -- Iguana-espinosa del Golfo, Northeastern Spinytail Iguana, Veracruz Spiny-tailed Iguana
  Ctenosaura alfredschmidti G. Köhler, 1995 -- valid -- Campeche Spiny-tailed Iguana
  Ctenosaura bakeri Stejneger, 1901 -- valid -- Útila Spiny-tailed Iguana, Baker's Spinytail Iguana
  Ctenosaura clarki Bailey, 1928 -- valid -- Garrobo del Balsas, Balsas Spiny-tailed Iguana, Balsas Armed Lizard
  Ctenosaura conspicuosa Dickerson, 1919 -- valid -- San Esteban Spiny-tailed Iguana, San Esteban Spinytail Iguana
  Ctenosaura defensor (Cope, 1866) -- valid -- Yucatán Spinytail Iguana, Yucatán Spiny-tailed Iguana, Garrobo yucateco
  Ctenosaura flavidorsalis G. Köhler and Klemmer, 1994 -- valid -- Yellow-backed Spiny-tailed Iguana
  Ctenosaura hemilopha (Cope, 1863) -- valid -- Iguana-espinosa de Sonora, Short-crested Spiny-tailed Iguana, Baja California Spiny-tailed Iguana, Cape Spinytail Iguana
  Ctenosaura insulana Dickerson, 1919 -- invalid
  Ctenosaura macrolopha H. M. Smith, 1972 -- valid -- Sonoran Spiny-tailed Iguana
  Ctenosaura melanosterna Buckley, 1997 -- valid -- Black-chested Spiny-tailed Iguana
  Ctenosaura nolascensis H. M. Smith, 1972 -- valid -- Nolasco Spiny-tailed Iguana, San Pedro Nolasco Spinytail Iguana
  Ctenosaura oaxacana G. Köhler and Hasbun, 2001 -- valid -- Oaxaca Spiny-tailed Iguana
  Ctenosaura oedirhina de Queiroz, 1987 -- valid -- Roatán Spiny-tailed Iguana, Roatán Spinytail Iguana
  Ctenosaura palearis Stejneger, 1899 -- valid -- Motagua Spiny-tailed Iguana
  Ctenosaura pectinata (Wiegmann, 1834) -- valid -- Mexican Spiny-tailed Iguana, Iguana-espinosa mexicana, Spiny-tailed Iguana, Western Spiny-tailed Iguana, Guerreran Spiny-tailed Iguana
  Ctenosaura praeocularis Hasbun and G. Köhler, 2009 -- invalid -- Southern Honduran Spiny-tailed Iguana
  Ctenosaura quinquecarinata (Gray, 1842) -- valid -- Five-keeled Spiny-tailed Iguana, Garrobo oaxaqueño, Oaxacan Spinytail Iguana
  Ctenosaura similis (Gray, 1831) -- valid -- Black Spiny-tailed Iguana, Iguana-espinosa rayada, Common Spiny-tailed Iguana, Black Iguana
  Ctenosaura similis multipunctata Barbour and Shreve, 1934 -- valid -- Providence Spiny-tailed Iguana
  Ctenosaura similis similis (Gray, 1831) -- valid -- Common Spiny-tailed Iguana
  Cubophis brooksi (Barbour, 1914) -- valid -- Swan Island Racer
  Cubophis cantherigerus (Bibron, 1840) -- valid -- Cuban Racer
  Cubophis cantherigerus adspersus (Gundlach and Peters, 1864) -- valid
  Cubophis cantherigerus brooksi (Barbour, 1914) -- invalid
  Cubophis cantherigerus cantherigerus (Bibron, 1840) -- valid
  Cubophis cantherigerus pepei (Schwartz and Thomas, 1970) -- valid
  Cubophis cantherigerus schwartzi (Lando and Williams, 1969) -- valid
  Cubophis caymanus (Garman, 1887) -- valid -- Black Snake
  Cubophis fuscicauda (Garman, 1888) -- valid
  Cubophis ruttyi (Grant, 1941) -- valid
  Cubophis vudii (Cope, 1862) -- valid -- Bahamian Racer
  Cubophis vudii aterrimus (Barbour and Shreve, 1935) -- valid
  Cubophis vudii picticeps (Conant, 1937) -- valid
  Cubophis vudii raineyi (Barbour and Shreve, 1935) -- valid
  Cubophis vudii utowanae (Barbour and Shreve, 1935) -- valid
  Cubophis vudii vudii (Cope, 1862) -- valid
  Cyclocorus A. M. C. Duméril, 1853 -- valid
  Cyclocorus lineatus (Reinhardt, 1843) -- valid -- Reinhardt's Lined Snake
  Cyclocorus lineatus alcalai Leviton, 1967 -- valid
  Cyclocorus lineatus lineatus (Reinhardt, 1843) -- valid
  Cyclocorus nuchalis Taylor, 1923 -- valid -- Southern Triangle-spotted Snake
  Cyclocorus nuchalis nuchalis Taylor, 1923 -- valid
  Cyclocorus nuchalis taylori Leviton, 1967 -- valid
  Cyclophiops doriae Boulenger, 1888 -- valid -- Doria's Green Snake
  Cyclophiops hamptoni (Boulenger, 1900) -- valid -- Hampton's Green Snake
  Cyclophiops herminae (Boettger, 1895) -- valid -- Sakishima Green Snake
  Cyclophiops major (Günther, 1858) -- valid -- Chinese Green Snake
  Cyclophiops multicinctus (Roux, 1907) -- valid -- Many-banded Green Snake, North China Green Snake
  Cyclophiops semicarinatus (Hallowell, 1861) -- valid -- Ryukyu Green Snake
  Cyclophis calamaria Günther, 1858 -- invalid
  Cyclophis frenatus Günther, 1858 -- invalid
  Cyclophis major Günther, 1858 -- invalid
  Cyclophis modestus punctatolineata Boettger, 1892 -- invalid
  Cyclophis persicus Anderson, 1872 -- invalid
  Cyclura carinata Harlan, 1825 -- valid -- Turks and Caicos Rock Iguana, Turks Island Iguana
  Cyclura collei Gray, 1845 -- valid -- Jamaican Iguana, Jamaican Rock Iguana, Jamaica Iguana
  Cyclura cornuta (Bonnaterre, 1789) -- valid -- Horned Ground Iguana, Hispaniolan Rhinoceros Iguana, Rhinoceros Iguana
  Cyclura cornuta cornuta (Bonnaterre, 1789) -- valid
  Cyclura cornuta onchiopsis Cope, 1885 -- valid
  Cyclura cornuta stejnegeri Barbour and Noble, 1916 -- valid -- Mona Rhinoceros Iguana, Mona Island Iguana, Mona Ground Iguana
  Cyclura cychlura (Cuvier, 1829) -- valid -- Northern Bahamian Rock Iguana, Andros Island Iguana
  Cyclura cychlura cychlura (Cuvier, 1829) -- valid -- Andros Island Ground Iguana, Andros Island Iguana, Andros Rock Iguana
  Cyclura cychlura figginsi Barbour, 1923 -- valid -- Exuma Island Iguana, Exuma Rock Iguana
  Cyclura cychlura inornata Barbour and Noble, 1916 -- valid -- Allen's Cay Iguana, Allen Cays Rock Iguana, Allen's Island Iguana
  Cyclura lewisi Grant, 1940 -- valid -- Grand Cayman Ground Iguana, Grand Cayman Blue Iguana, Grand Cayman Blue Rock Iguana
  Cyclura nigerrima Cope, 1885 -- invalid -- Navassa Island Ground Iguana
  Cyclura nubila (Gray, 1831) -- valid -- Cuban Ground Iguana, Clouded Rock Iguana, Cayman Islands Ground Iguana, Cuban Iguana
  Cyclura nubila caymanensis Barbour and Noble, 1916 -- valid -- Cayman Brac Ground Lizard, Lesser Cayman's Iguana, Sister Island Rock Iguana
  Cyclura nubila lewisi Grant, 1940 -- invalid -- Grand Cayman Ground Iguana
  Cyclura nubila nubila (Gray, 1831) -- valid -- Cuban Ground Iguana, Cuban Rock Iguana, Cuban Iguana, Cayman Islands Ground Iguana
  Cyclura pinguis Barbour, 1917 -- valid -- Anegada Ground Iguana, Anegada Rock Iguana
  Cyclura ricordii (A. M. C. Duméril and Bibron, 1837) -- valid -- Ricord's Rock Iguana, Ricord's Ground Iguana
  Cyclura rileyi Stejneger, 1903 -- valid -- Central Bahamian Rock Iguana, White Cay Ground Iguana
  Cyclura rileyi cristata K. P. Schmidt, 1920 -- valid -- White Cay Ground Iguana, White Cay Iguana, Sandy Cay Rock Iguana
  Cyclura rileyi nuchalis Barbour and Noble, 1916 -- valid -- Alkins Ground Iguana, Acklins Rock Iguana, Acklins Iguana
  Cyclura rileyi rileyi Stejneger, 1903 -- valid -- Watling Island Ground Iguana, San Salvador Iguana, San Salvador Rock Iguana
  Cynophis moellendorffi Boettger, 1886 -- invalid
  Cyrtophis scutatus A. Smith, 1849 -- invalid
  Daboia deserti (Anderson, 1892) -- invalid
  Daboia mauritanica (Gray, 1849) -- valid -- Moorish Viper
  Daboia palaestinae (Werner, 1938) -- valid -- Palestine Viper
  Daboia russelii (Shaw and Nodder, 1797) -- valid -- Russel's Viper
  Daboia siamensis (M. A. Smith, 1917) -- valid -- Eastern Russel's Viper
  Daboia xanthina Gray, 1849 -- invalid
  Dactyloa extremus (Garman, 1887) -- invalid -- Barbados Anole
  Dactyloa richardii (A. M. C. Duméril and Bibron, 1837) -- invalid
  Dactyloidae -- valid
  Dasypeltis abyssina (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Ethiopian Egg Eater
  Dasypeltis atra Sternfeld, 1912 -- valid -- African Egg-eating Snake, Montane Egg-eater
  Dasypeltis confusa Trape and Mané, 2006 -- valid -- Confusing Egg Eater
  Dasypeltis fasciata A. Smith, 1849 -- valid -- Western Forest Eggeater, Central African Egg-eating Snake
  Dasypeltis gansi Trape and Mané, 2006 -- valid -- Gans' Egg Eater
  Dasypeltis inornata A. Smith, 1849 -- valid -- Southern Brown Egg Eater
  Dasypeltis latericia Trape and Mané, 2006 -- valid
  Dasypeltis medici (Bianconi, 1859) -- valid -- East African Egg Eater
  Dasypeltis medici lamuensis Gans, 1957 -- valid
  Dasypeltis medici medici (Bianconi, 1859) -- valid
  Dasypeltis palmarum (Leach, 1818) -- valid -- Palm Egg Eater
  Dasypeltis parascabra Trape, Mediannikov and Trape, 2012 -- valid
  Dasypeltis sahelensis Trape and Mané, 2006 -- valid -- Sahel Egg Eater
  Dasypeltis scabra (Linnaeus, 1758) -- valid -- Common Egg Eater, Rhombic Egg Eater
  Dasypeltis scabra atra Sternfeld, 1912 -- invalid
  Dasypeltis scabra loveridgei Mertens, 1954 -- valid
  Dasypeltis scabra scabra (Linnaeus, 1758) -- valid
  Deinagkistrodon acutus (Günther, 1888) -- valid -- Chinese Moccasin, Hundred-pace Viper, Five-pacer Viper
  Demansia angusticeps (Macleay, 1888) -- valid
  Demansia calodera Storr, 1978 -- valid -- Black-necked Whipsnake
  Demansia flagellatio Wells and Wellington, 1985 -- valid
  Demansia guttata Parker, 1926 -- invalid
  Demansia olivacea (Gray, 1842) -- valid -- Olive Whipsnake, Marble-headed Whip Snake
  Demansia olivacea calodera Storr, 1978 -- invalid
  Demansia olivacea rufescens Storr, 1978 -- invalid
  Demansia papuensis (Macleay, 1877) -- valid -- Papuan Whip Snake
  Demansia papuensis melaena Storr, 1978 -- valid
  Demansia papuensis papuensis (Macleay, 1877) -- valid
  Demansia psammophis (Schlegel, 1837) -- valid -- Yellow-faced Whipsnake, Yellow-faced Whip Snake
  Demansia psammophis cupreiceps Storr, 1978 -- valid
  Demansia psammophis psammophis (Schlegel, 1837) -- valid
  Demansia quaesitor Shea in Shea and Scanlon, 2007 -- valid
  Demansia reticulata (Gray, 1842) -- valid -- Yellow-faced Whip Snake, Yellow-faced Whipsnake
  Demansia reticulata cupreiceps Storr, 1978 -- invalid
  Demansia rimicola Scanlon in Shea and Scanlon, 2007 -- valid
  Demansia rufescens Storr, 1978 -- valid -- Rufous Whipsnake
  Demansia shinei Shea in Shea and Scanlon, 2007 -- valid
  Demansia simplex Storr, 1978 -- valid -- Grey Whipsnake
  Demansia textilis inframacula Waite, 1925 -- invalid
  Demansia torquata (Günther, 1862) -- valid -- Collared Whipsnake, Collared Whip Snake
  Demansia vestigiata (De Vis, 1884) -- valid -- Black Whip Snake
  Dendorophis pictus striata Cohn, 1905 -- invalid
  Dendragama Doria, 1888 -- valid
  Dendragama boulengeri Doria, 1888 -- valid -- Boulenger's Tree Agama
  Dendrelaphis andamanensis (Anderson, 1871) -- valid -- Andaman Bronze-back
  Dendrelaphis ashoki Vogel and Van Rooijen, 2011 -- valid -- Ashok's Bronzeback Tree Snake
  Dendrelaphis bifrenalis (Boulenger, 1890) -- valid -- Boulenger's Bronzeback
  Dendrelaphis biloreatus Wall, 1908 -- valid -- Gore's Bronzeback
  Dendrelaphis calligaster (Günther, 1867) -- valid -- Green Treesnake, Nothern Tree Snake
  Dendrelaphis caudolineatus (Gray, 1834) -- valid -- Striped Bronzeback, Gray Bronzeback
  Dendrelaphis caudolineatus flavescens Gaulke, 1994 -- invalid
  Dendrelaphis caudolineatus luzonensis Leviton, 1961 -- invalid
  Dendrelaphis caudolineolatus (Günther, 1869) -- valid
  Dendrelaphis chairecacos (F. Boie, 1827) -- valid
  Dendrelaphis cyanochloris (Wall, 1921) -- valid -- Wall's Bronzeback
  Dendrelaphis flavescens Gaulke, 1994 -- valid -- Sulu Bronzeback
  Dendrelaphis formosus (F. Boie, 1827) -- valid -- Elegant Bronzeback
  Dendrelaphis fuliginosus Griffin, 1909 -- valid
  Dendrelaphis gastrostictus (Boulenger, 1894) -- valid -- Montane Treesnake
  Dendrelaphis girii Vogel and Van Rooijen, 2011 -- valid
  Dendrelaphis grandoculis (Boulenger, 1890) -- valid -- Southern Bronzeback
  Dendrelaphis grismeri Vogel and Van Rooijen, 2008 -- valid
  Dendrelaphis haasi Van Rooijen and Vogel, 2008 -- valid -- Haas's Bronzeback Snake
  Dendrelaphis hollinrakei Lazell, 2002 -- valid
  Dendrelaphis humayuni Tiwari and Biswas, 1973 -- valid -- Tiwar's Bronzeback
  Dendrelaphis inornatus Boulenger, 1897 -- valid -- Lesser Sundas Bronzeback
  Dendrelaphis inornatus timorensis M. A. Smith, 1927 -- invalid -- Eastern Sundas Bronzeback
  Dendrelaphis keiensis (Mertens, 1926) -- valid -- Kei Treesnake
  Dendrelaphis kopsteini Vogel and Van Rooijen, 2007 -- valid -- Kopstein's Bronzeback Snake
  Dendrelaphis levitoni Van Rooijen and Vogel, 2012 -- valid
  Dendrelaphis lineolatus (Jacquinot and Guichenot, 1853) -- valid
  Dendrelaphis lorentzii (Lidth de Jeude, 1911) -- valid -- Lorentz River Treesnake
  Dendrelaphis luzonensis Leviton, 1961 -- valid
  Dendrelaphis macrops (Günther, 1877) -- valid
  Dendrelaphis marenae Vogel and Van Rooijen, 2008 -- valid -- Maren's Bronzeback
  Dendrelaphis modestus Boulenger, 1894 -- valid -- Gray Bronzeback, Striped Bronzeback
  Dendrelaphis ngansonensis (Bourret, 1935) -- valid -- Nganson Bronzeback
  Dendrelaphis nigroserratus Vogel, Van Rooijen and Hauser, 2012 -- valid -- Saw-tooth-necked Bronzeback
  Dendrelaphis oliveri (Taylor, 1950) -- valid -- Oliver's Bronzeback
  Dendrelaphis papuensis Boulenger, 1895 -- valid -- Papuan Treesnake
  Dendrelaphis philippinensis (Günther, 1879) -- valid
  Dendrelaphis pictus (Gmelin, 1789) -- valid -- Common Bronze-back, Indonesian Bronze-back, Painted Bronzeback
  Dendrelaphis punctulatus (Gray, 1826) -- valid -- Green Tree Snake, Common Bronzeback, Common Tree Snake
  Dendrelaphis punctulatus striolatus (Peters, 1867) -- invalid
  Dendrelaphis salomonis (Günther, 1872) -- invalid
  Dendrelaphis schokari (Kuhl, 1820) -- valid
  Dendrelaphis striatus (Cohn, 1905) -- valid -- Banded Bronzeback
  Dendrelaphis striolatus (Peters, 1867) -- valid
  Dendrelaphis subocularis (Boulenger, 1888) -- valid -- Mountain Bronzeback, Burmese Bronzeback
  Dendrelaphis terrificus (Peters, 1872) -- valid -- Terrific Bronzeback
  Dendrelaphis tristis (Daudin, 1803) -- valid -- Common Bronzeback Tree Snake, Daudin's Bronzeback
  Dendrelaphis underwoodi Van Rooijen and Vogel, 2008 -- valid -- Underwood's Bronzeback Snake
  Dendrelaphis walli Vogel and Van Rooijen, 2011 -- valid
  Dendroaspis angusticeps (A. Smith, 1849) -- valid -- Green Mamba
  Dendroaspis jamesoni (Traill in Schlegel, 1843) -- valid -- Jameson's Mamba
  Dendroaspis jamesoni jamesoni (Traill in Schlegel, 1843) -- valid
  Dendroaspis jamesoni kaimosae Loveridge, 1936 -- valid
  Dendroaspis polylepis Günther, 1864 -- valid -- Black Mamba
  Dendroaspis viridis (Hallowell, 1844) -- valid -- Western Green Mamba
  Dendrolycus elapoides (Günther, 1874) -- valid -- Cameroon Rainforest Snake
  Dendrolycus elapoides angusticinctus (Laurent, 1952) -- valid
  Dendrolycus elapoides elapoides (Günther, 1874) -- valid
  Dendrophidion apharocybe Cadle, 2012 -- valid
  Dendrophidion atlantica Freire, Caramaschi and Gonçalves, 2010 -- valid -- Atlantic Forest Racer
  Dendrophidion bivittatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Forest Racer
  Dendrophidion boshelli Dunn, 1944 -- valid -- Hoshell's Forest Racer
  Dendrophidion brunneum (Günther, 1858) -- valid -- Günther's Forest Racer
  Dendrophidion chloroticum Cope, 1886 -- invalid
  Dendrophidion clarkii Dunn, 1933 -- valid -- Clark's Forest Racer
  Dendrophidion crybelum Cadle, 2012 -- valid
  Dendrophidion dendrophis (Schlegel, 1837) -- valid -- Olive Forest Racer
  Dendrophidion graciliverpa Cadle, 2012 -- valid
  Dendrophidion nuchale (Peters, 1863) -- valid -- Peters' Forest Racer
  Dendrophidion paucicarinatum (Cope, 1894) -- valid -- Cope's Forest Racer
  Dendrophidion percarinatum (Cope, 1893) -- valid -- South American Forest Racer
  Dendrophidion prolixum Cadle, 2012 -- valid
  Dendrophidion rufiterminorum Cadle and Savage, 2012 -- valid
  Dendrophidion vinitor H. M. Smith, 1941 -- valid -- Culebra-corredora barrada, Barred Forest Racer
  Dendrophidium melanotropis Cope, 1876 -- invalid
  Dendrophis aurata Schlegel, 1837 -- invalid
  Dendrophis bifrenalis Boulenger, 1890 -- invalid
  Dendrophis calligastra Günther, 1867 -- invalid
  Dendrophis calligastra keiensis Mertens, 1926 -- invalid
  Dendrophis catesbyi Schlegel, 1837 -- invalid
  Dendrophis caudolineolatus Günther, 1869 -- invalid
  Dendrophis chairecacos F. Boie, 1827 -- invalid
  Dendrophis flavigularis Hallowell, 1852 -- invalid
  Dendrophis formosa F. Boie, 1827 -- invalid
  Dendrophis gastrostictus Boulenger, 1894 -- invalid
  Dendrophis grandoculis Boulenger, 1890 -- invalid
  Dendrophis lineolata Jacquinot and Guichenot, 1853 -- invalid
  Dendrophis lorentzii Lidth de Jeude, 1911 -- invalid
  Dendrophis macrops Günther, 1877 -- invalid
  Dendrophis natalensis A. Smith, 1848 -- invalid
  Dendrophis philippinensis Günther, 1879 -- invalid
  Dendrophis picta andamanensis Anderson, 1871 -- invalid
  Dendrophis pictus cyanochloris Wall, 1921 -- invalid
  Dendrophis pictus ngansonensis Bourret, 1935 -- invalid
  Dendrophis praeornatus Schlegel, 1837 -- invalid
  Dendrophis semivariegata A. Smith, 1840 -- invalid
  Dendrophis smaragdina Schlegel, 1837 -- invalid
  Dendrophis striolatus Peters, 1867 -- invalid
  Dendrophis subocularis Boulenger, 1888 -- invalid
  Dendrophis terrificus Peters, 1872 -- invalid
  Denisonia boschmai Brongersma and Knaap-van Meeuwen, 1964 -- invalid
  Denisonia devisi Waite and Longman, 1920 -- valid -- De Vis's Banded Snake, De Vis Banded Snake
  Denisonia dwyeri Worrell, 1956 -- invalid
  Denisonia fasciata Rosén, 1905 -- invalid
  Denisonia maculata (Steindachner, 1867) -- valid -- Ornamental Snake
  Denisonia maculata devisi Waite and Longman, 1920 -- invalid
  Denisonia monachus Storr, 1964 -- invalid
  Denisonia ordensis Storr, 1984 -- invalid
  Denisonia punctata Boulenger, 1896 -- invalid
  Diadophis amabilis occidentalis Blanchard, 1923 -- invalid
  Diadophis amabilis similis Blanchard, 1923 -- invalid
  Diadophis amabilis vandenburgii Blanchard, 1923 -- invalid
  Diadophis arnyi Kennicott, 1859 -- invalid
  Diadophis punctatus (Linnaeus, 1766) -- valid -- Ring-necked Snake, Culebra de collar, Ringneck Snake, couleuvre à collier
  Diadophis punctatus acricus Paulson, 1966 -- valid -- Key Ringneck Snake, Key Ring-Necked Snake
  Diadophis punctatus amabilis Baird and Girard, 1853 -- valid -- Pacific Ringneck Snake, Pacific Ring-Necked Snake
  Diadophis punctatus arnyi Kennicott, 1859 -- valid -- Prairie Ringneck Snake, Prairie Ring-Necked Snake
  Diadophis punctatus dugesii Villada, 1875 -- valid
  Diadophis punctatus edwardsii (Merrem, 1820) -- valid -- Northern Ringneck Snake, Northern Ring-Necked Snake
  Diadophis punctatus modestus Bobourt, 1866 -- valid -- San Bernardino Ringneck Snake, San Bernardino Ring-Necked Snake
  Diadophis punctatus occidentalis Blanchard, 1923 -- valid -- Northwestern Ringneck Snake, Northwestern Ring-Necked Snake
  Diadophis punctatus pulchellus Baird and Girard, 1853 -- valid -- Coralbelly Ringneck Snake, Coral-Bellied Ring-Necked Snake
  Diadophis punctatus punctatus (Linnaeus, 1766) -- valid -- Southern Ringneck Snake, Southern Ring-Necked Snake
  Diadophis punctatus regalis Baird and Girard, 1853 -- valid -- Regal Ringsnake Snake, Regal Ring-Necked Snake
  Diadophis punctatus similis Blanchard, 1923 -- valid -- San Diego Ringneck Snake, San Diego Ring-Necked Snake
  Diadophis punctatus stictogenys Cope, 1860 -- valid -- Mississippi Ringneck Snake, Mississippi Ring-Necked Snake
  Diadophis punctatus vandenburgii Blanchard, 1923 -- valid -- Monterey Ringneck Snake, Monterey Ring-Necked Snake
  Diadophis regalis Baird and Girard, 1853 -- invalid
  Diaphorolepis laevis Werner, 1923 -- valid -- Colombian Frog-eating Snake
  Diaphorolepis lasallei Nicéforo-María, 1950 -- invalid
  Diaphorolepis wagneri Jan, 1863 -- valid -- Ecuador Frog-eating Snake
  Diemansia torquata Günther, 1862 -- invalid
  Diemenia angusticeps Macleay, 1888 -- invalid
  Diemenia aspidorhyncha McCoy, 1879 -- invalid
  Diemenia ingrami Boulenger, 1908 -- invalid
  Diemenia microlepidota McCoy, 1879 -- invalid
  Diemenia papuensis Macleay, 1877 -- invalid
  Diemenia schlegelii Günther, 1872 -- invalid
  Dinodon flavozonatum Pope, 1928 -- invalid
  Dinodon futsingensis Pope, 1928 -- invalid
  Dinodon rosozonatum Hu and Zhao, 1972 -- invalid
  Dinodon rufozonatum walli Stejneger, 1907 -- invalid
  Dinodon septentrionale multifasciatum Maki, 1931 -- invalid
  Diplolaemus Bell in Darwin, 1843 -- valid
  Diplolaemus bibronii Bell, 1843 -- valid -- Bibron's Iguana
  Diplolaemus darwinii Bell, 1843 -- valid -- Darwin's Iguana
  Diplolaemus leopardinus (Werner, 1898) -- valid -- Leopard Iguana
  Diplolaemus sexcinctus Cei, Scolaro and Videla, 2003 -- valid
  Diporiphora Gray, 1842 -- valid
  Diporiphora adductus Doughty, Kealley and Melville, 2012 -- valid -- Carnarvon Dragon
  Diporiphora albilabris Storr, 1974 -- valid -- Tar Tar Lizard, White-lipped Two-line Dragon
  Diporiphora albilabris albilabris Storr, 1974 -- valid
  Diporiphora albilabris sobria Storr, 1974 -- valid
  Diporiphora ameliae Emmott, Couper, Melville and Chapple, 2012 -- valid
  Diporiphora amphiboluroides Lucas and Frost, 1902 -- valid -- Mulga Dragon
  Diporiphora arnhemica Storr, 1974 -- valid -- Arnhem Land Two-line Dragon
  Diporiphora australis (Steindachner, 1867) -- valid -- Eastern Two-line Dragon
  Diporiphora bennettii (Gray, 1845) -- valid -- Robust Two-line Dragon
  Diporiphora bilineata Gray, 1842 -- valid -- Northern Two-line Dragon, Two-lined Dragon
  Diporiphora convergens Storr, 1974 -- valid -- Crystal Creek Two-line Dragon
  Diporiphora lalliae Storr, 1974 -- valid -- Lally's Two-line Dragon
  Diporiphora linga Houston, 1977 -- valid -- Pink Two-line Dragon
  Diporiphora magna Storr, 1974 -- valid -- Yellow-sided Two-line Dragon
  Diporiphora margaretae Storr, 1974 -- valid
  Diporiphora nobbi (Witten, 1972) -- valid -- Nobbi Lashtail, Nobbi
  Diporiphora paraconvergens Doughty, Kealley and Melville, 2012 -- valid -- Grey-striped Western Desert Dragon
  Diporiphora phaeospinosa Edwards and Melville, 2011 -- valid
  Diporiphora pindan Storr, 1980 -- valid -- Pindan Dragon, Pindan Two-line Dragon
  Diporiphora reginae Glauert, 1959 -- valid -- Plain-backed Two-line Dragon
  Diporiphora superba Storr, 1974 -- valid -- Superb Two-line Dragon
  Diporiphora valens Storr, 1980 -- valid -- Southern Pilbara Spinifex Dragon, Southern Pilbara Tree Dragon, Pilbara Two-line Dragon
  Diporiphora vescus Doughty, Kealley and Melville, 2012 -- valid -- Northern Pilbara Tree Dragon
  Diporiphora winneckei Lucas and Frost, 1896 -- valid -- Cane Grass Dragon, Cane Grass Two-line Dragon
  Dipsadoboa aulica (Günther, 1864) -- valid -- Marbled Tree Snake, Cross-barred Snake
  Dipsadoboa brevirostris (Sternfeld, 1908) -- valid
  Dipsadoboa duchesnii (Boulenger, 1901) -- valid
  Dipsadoboa flavida (Broadley and Stevens, 1971) -- valid
  Dipsadoboa flavida broadleyi Rasmussen, 1989 -- valid -- Cross-barred Tree Snake
  Dipsadoboa flavida flavida (Broadley and Stevens, 1971) -- valid
  Dipsadoboa maculata Günther, 1858 -- invalid
  Dipsadoboa shrevei (Loveridge, 1932) -- valid -- Nocturnal Tree Snake, Shreve's Tree Snake
  Dipsadoboa shrevei kageleri (Uthmöller, 1939) -- valid
  Dipsadoboa shrevei shrevei (Loveridge, 1932) -- valid
  Dipsadoboa underwoodi Rasmussen, 1993 -- valid
  Dipsadoboa unicolor Günther, 1858 -- valid -- Günther's Green Tree Snake
  Dipsadoboa viridis (Peters, 1869) -- valid
  Dipsadoboa viridis gracilis Laurent, 1956 -- valid
  Dipsadoboa viridis viridis (Peters, 1869) -- valid
  Dipsadoboa weileri (Lindholm, 1905) -- valid
  Dipsadoboa werneri (Boulenger, 1897) -- valid -- Werner's Green Tree Snake
  Dipsadomorphus andamanensis Wall, 1909 -- invalid
  Dipsadomorphus beddomei Wall, 1909 -- invalid
  Dipsadomorphus brevirostris Sternfeld, 1908 -- invalid
  Dipsadomorphus ceylonensis Günther, 1858 -- invalid
  Dipsadomorphus quincunciata Wall, 1908 -- invalid
  Dipsadomorphus stoliczkae Wall, 1909 -- invalid
  Dipsadomorphus trigonata melanocephalus Annandale, 1904 -- invalid
  Dipsadophidium weileri Lindholm, 1905 -- invalid
  Dipsas albifrons (Sauvage, 1884) -- valid -- Sauvage's Snail-eater
  Dipsas alternans (Fischer, 1885) -- valid -- Jan's Snail-eater
  Dipsas andiana (Boulenger, 1896) -- valid
  Dipsas angulata W. C. H. Peters, 1861 -- invalid
  Dipsas articulata (Cope, 1868) -- valid -- American Snail-eater
  Dipsas baliomelas Harvey, 2008 -- valid
  Dipsas barnesii Günther, 1869 -- invalid
  Dipsas betsileana Günther, 1880 -- invalid
  Dipsas bicolor (Günther, 1895) -- valid -- Two-colored Snail-eater
  Dipsas biscutata latifascia Peters, 1870 -- invalid
  Dipsas biscutatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Dipsas blandingii Hallowell, 1844 -- invalid
  Dipsas brevifacies (Cope, 1866) -- valid -- Culebra-caracolera chata, Snail-eating Thirst Snake
  Dipsas bucephala (Shaw, 1802) -- valid -- Neotropical Snail-eater
  Dipsas bucephala bucephala (Shaw, 1802) -- valid
  Dipsas bucephala cisticeps (Boettger, 1885) -- valid
  Dipsas catesbyi (Sentzen, 1796) -- valid -- Catesby's Snail-eater
  Dipsas chaparensis Reynolds and Foster, 1992 -- valid
  Dipsas colubrina Schlegel, 1837 -- invalid
  Dipsas copei (Günther, 1872) -- valid
  Dipsas cynodon F. Boie, 1827 -- invalid
  Dipsas dendrophila F. Boie, 1827 -- invalid
  Dipsas dieperinkii Schlegel, 1837 -- invalid
  Dipsas dightoni Boulenger, 1894 -- invalid
  Dipsas drapiezii H. Boie in F. Boie, 1827 -- invalid
  Dipsas elegans (Boulenger, 1896) -- valid
  Dipsas ellipsifera (Boulenger, 1898) -- valid
  Dipsas gaigeae (Oliver, 1937) -- valid -- Culebra-caracolera de Gaige, Gaige's Thirst Snail-eater
  Dipsas gaimardi granuliceps Boettger, 1877 -- invalid
  Dipsas gaimardii Schlegel, 1837 -- invalid
  Dipsas gaimardii comorensis Peters, 1874 -- invalid
  Dipsas gemmistrata latistrata Cope, 1887 -- invalid
  Dipsas gokool Gray, 1835 -- invalid
  Dipsas gracilis (Boulenger, 1902) -- valid -- Graceful Snail-eater
  Dipsas gracillima Günther, 1895 -- invalid
  Dipsas hippocrepis Reinhardt, 1843 -- invalid
  Dipsas incerta (Jan, 1863) -- valid -- Jan's Snail-eater
  Dipsas indica Laurenti, 1768 -- valid -- Neotropical Snail-eater
  Dipsas indica ecuadoriensis Peters, 1960 -- valid
  Dipsas indica indica Laurenti, 1768 -- valid
  Dipsas indica petersi Hoge, 1975 -- valid
  Dipsas infrenalis Rosen, 1905 -- invalid
  Dipsas maxillaris (Werner, 1910) -- valid -- Werner's Thirst Snake
  Dipsas medici Bianconi, 1859 -- invalid
  Dipsas mikanii Schlegel, 1837 -- invalid
  Dipsas monticola Cantor, 1839 -- invalid
  Dipsas multifasciata Blyth, 1861 -- invalid
  Dipsas multomaculata F. Boie, 1827 -- invalid
  Dipsas nicholsi (Dunn, 1933) -- valid
  Dipsas nigriceps Günther, 1863 -- invalid
  Dipsas nuchalis Günther, 1875 -- invalid
  Dipsas ochracea Theobald, 1868 -- invalid
  Dipsas oreas (Cope, 1868) -- valid -- Ecuador Snail-eater
  Dipsas pakaraima MacCulloch and Lathrop, 2004 -- valid
  Dipsas pavonina Schlegel, 1837 -- valid -- Northern Snail-eater
  Dipsas peruana (Boettger, 1898) -- valid -- Peru Snail-eater
  Dipsas philippina Peters, 1867 -- invalid
  Dipsas praeornata (Werner, 1909) -- valid
  Dipsas pratti (Boulenger, 1897) -- valid -- Pratt's Snail-eater
  Dipsas pulverulenta Fischer, 1856 -- invalid
  Dipsas rhinopoma Blanford, 1874 -- invalid
  Dipsas rubescens Gray, 1835 -- invalid
  Dipsas sanctijoannis (Boulenger, 1911) -- valid -- Tropical Snail-eater
  Dipsas sazimai Fernandes, Marques and Argôlo, 2010 -- valid
  Dipsas schokari Kuhl, 1820 -- invalid
  Dipsas schunkii (Boulenger, 1908) -- valid -- Schunk's Snail-eater
  Dipsas splendida Günther, 1895 -- invalid
  Dipsas temporalis (Werner, 1909) -- valid -- Temporal Snail-eater
  Dipsas tenuissima Taylor, 1954 -- valid -- Taylor's Snail-eater
  Dipsas trinitatis Parker, 1926 -- valid -- Trinidad Snail-eater
  Dipsas variegata Reinhardt, 1843 -- invalid
  Dipsas variegata (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Variegated Snail-eater
  Dipsas variegata trinitatis Parker, 1926 -- invalid
  Dipsas vermiculata Peters, 1960 -- valid -- Vermiculate Snail-eater
  Dipsas viguieri (Bocourt, 1884) -- valid -- Bocourt's Snail-eater
  Dipsina multimaculata (A. Smith, 1847) -- valid -- Dwarf Beaked Snake, Western Beaked Snake
  Dipsina rubropunctata Fischer, 1884 -- invalid
  Dipsodomorus albifrons Sauvage, 1884 -- invalid
  Dipsosaurus catalinensis Van Denburgh, 1922 -- valid -- Santa Catalina Desert Iguana
  Dipsosaurus dorsalis (Baird and Girard, 1852) -- valid -- Desert Iguana, Iguana de desierto, Common Desert Iguana
  Dipsosaurus dorsalis catalinensis Van Denburgh, 1922 -- invalid
  Dipsosaurus dorsalis dorsalis (Baird and Girard, 1852) -- valid -- Desert Iguana, Western Desert Iguana, Northern Desert Iguana
  Dipsosaurus dorsalis lucasensis Van Denburgh, 1920 -- invalid
  Dipsosaurus dorsalis sonoriensis Allen, 1933 -- valid -- Sonoran Desert Iguana
  Dispholidus typus (A. Smith, 1828) -- valid -- Boomslang
  Dispholidus typus kivuensis Laurent, 1955 -- valid
  Dispholidus typus punctatus Laurent, 1955 -- valid
  Dispholidus typus typus (A. Smith, 1828) -- valid
  Distichurus maculatus Hallowell, 1842 -- invalid
  Distira annandalei Laidlaw, 1901 -- invalid
  Distira hendersoni Boulenger, 1903 -- invalid
  Distira mertoni Roux, 1910 -- invalid
  Ditaxodon taeniatus (Peters in Hensel, 1868) -- valid -- Hensel's Snake
  Ditypophis vivax Günther, 1881 -- valid -- Günther's Racer
  Dolichophis caspius (Gmelin, 1789) -- valid
  Dolichophis caspius caspius (Gmelin, 1789) -- valid
  Dolichophis caspius eiselti (Zinner, 1972) -- valid
  Dolichophis cypriensis (Schätti, 1985) -- valid
  Dolichophis jugularis (Linnaeus, 1758) -- valid -- Large Whip Snake
  Dolichophis jugularis asianus (Boettger, 1880) -- valid
  Dolichophis jugularis cypriacus (Zinner, 1972) -- valid
  Dolichophis jugularis jugularis (Linnaeus, 1758) -- valid
  Dolichophis schmidti (Nikolsky, 1909) -- valid
  Doliophis intestinalis everetti Boulenger, 1896 -- invalid
  Draco abbreviatus Hardwicke and Gray, 1827 -- valid -- Singapore Flying Dragon
  Draco beccarii W. C. H. Peters and Doria, 1878 -- valid
  Draco biaro Lazell, 1987 -- valid -- Lazell's Flying Dragon
  Draco bimaculatus Günther, 1864 -- valid -- Two-spotted Flying Lizard
  Draco blanfordii Boulenger, 1885 -- valid -- Blanford's Flying Lizard
  Draco boschmai Henning, 1936 -- valid
  Draco bourouniensis Lesson, 1834 -- valid
  Draco caerulhians Lazell, 1992 -- valid
  Draco cornutus Günther, 1864 -- valid
  Draco cristatellus Günther, 1872 -- valid -- Crested Flying Dragon
  Draco cyanopterus W. C. H. Peters, 1867 -- valid
  Draco dussumieri A. M. C. Duméril and Bibron, 1837 -- valid -- Western Ghats Flying Lizard, Southern Flying Lizard
  Draco fimbriatus Kuhl, 1820 -- valid -- Fringed Flying Dragon
  Draco fimbriatus fimbriatus Kuhl, 1820 -- valid
  Draco fimbriatus punctatus Boulenger, 1900 -- valid
  Draco formosus Boulenger, 1900 -- valid -- Dusky Gliding Lizard
  Draco guentheri Boulenger, 1885 -- valid -- Guenther's Flying Lizard
  Draco haematopogon Gray, 1831 -- valid -- Red-barbed Flying Dragon
  Draco indochinensis M. A. Smith, 1928 -- valid -- Indochinese Flying Lizard
  Draco iskandari McGuire, Brown, Mumpuni, Riyanto and Andayani, 2007 -- valid
  Draco jareckii Lazell, 1992 -- valid
  Draco lineatus Daudin, 1802 -- valid -- Lined Flying Dragon
  Draco lineatus lineatus Daudin, 1802 -- valid
  Draco lineatus ochropterus Werner, 1910 -- valid
  Draco maculatus (Gray, 1825) -- valid -- Spotted Flying Dragon
  Draco maculatus divergens Taylor, 1934 -- valid
  Draco maculatus haasei Boettger, 1893 -- valid
  Draco maculatus maculatus (Gray, 1845) -- valid
  Draco maculatus whiteheadi Boulenger, 1900 -- valid
  Draco maximus Boulenger, 1893 -- valid -- Great Flying Dragon
  Draco melanopogon Boulenger, 1887 -- valid -- Black-barbed Flying Dragon
  Draco melanopogon melanopogon Boulenger, 1887 -- valid
  Draco melanopogon nigriappendiculatus Bartlett, 1894 -- valid
  Draco mindanensis Stejneger, 1908 -- valid -- Mindanao Flying Lizard
  Draco modiglianii Vinciguerra, 1892 -- valid -- Lined Flying Dragon
  Draco norvillii Alcock, 1895 -- valid -- Norvill's Flying Lizard
  Draco obscurus Boulenger, 1887 -- valid -- Dusky Gliding Lizard
  Draco obscurus laetepictus Henning, 1936 -- valid
  Draco obscurus obscurus Boulenger, 1887 -- valid
  Draco ornatus (Gray, 1845) -- valid -- White-spotted Flying Lizard
  Draco palawanensis McGuire and Alcala, 2000 -- valid
  Draco quadrasi Boettger, 1893 -- valid -- Quadras' Flying Lizard
  Draco quinquefasciatus Hardwicke and Gray, 1827 -- valid -- Five-lined Flying Dragon
  Draco reticulatus Günther, 1864 -- valid
  Draco rhytisma Musters, 1983 -- valid
  Draco spilonotus Günther, 1872 -- valid
  Draco spilopterus (Wiegmann in Meyen, 1834) -- valid -- Philippine FlyingDragon
  Draco sumatranus Schlegel, 1844 -- valid -- Common Gliding Lizard
  Draco supriatnai McGuire, Brown, Mumpuni, Riyanto and Andayani, 2007 -- valid
  Draco taeniopterus Günther, 1861 -- valid -- Thai Flying Dragon
  Draco timorensis Kuhl, 1820 -- valid -- Timor Flying Dragon
  Draco volans Linnaeus, 1758 -- valid -- Common Flying Dragon
  Draco walkeri Boulenger, 1891 -- valid
  Draconinae -- valid
  Drepanodon erdisii Barbour, 1913 -- invalid
  Drepanoides anomalus (Jan, 1863) -- valid -- Black-collared Snake
  Dromicodryas bernieri (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Bernier's Striped Snake
  Dromicodryas quadrilineatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Four-striped Snake
  Dromicus affinis Günther, 1858 -- invalid
  Dromicus amazonicus Dunn, 1922 -- invalid
  Dromicus angulifer adspersus Gundlach and Peters, 1864 -- invalid
  Dromicus biserialis eibli Mertens, 1960 -- invalid
  Dromicus boursieri Jan, 1867 -- invalid
  Dromicus brevirostris Peters, 1863 -- invalid
  Dromicus chamissonis dorsalis Steindachner, 1876 -- invalid
  Dromicus clavatus Peters, 1864 -- invalid
  Dromicus dolicocercus Peracca, 1892 -- invalid
  Dromicus exiguum subspadix Schwartz, 1967 -- invalid
  Dromicus exiguus Cope, 1863 -- invalid
  Dromicus godmani Günther, 1865 -- invalid
  Dromicus hoodensis Van Denburgh, 1912 -- invalid
  Dromicus juliae copeae Parker, 1936 -- invalid
  Dromicus laureatus Günther, 1868 -- invalid
  Dromicus multilineatus Peters, 1863 -- invalid
  Dromicus occidentalis Van Denburgh, 1912 -- invalid
  Dromicus omiltemanus Günther, 1894 -- invalid
  Dromicus ornatus Garman, 1887 -- invalid
  Dromicus parvifrons Cope, 1862 -- invalid
  Dromicus parvifrons paraniger Thomas and Schwartz, 1965 -- invalid
  Dromicus parvifrons rosamondae Cochran, 1934 -- invalid
  Dromicus parvifrons stygius Thomas and Schwartz, 1965 -- invalid
  Dromicus polylepis Buden, 1966 -- invalid
  Dromicus protenus Jan, 1867 -- invalid
  Dromicus putnami Jan, 1863 -- invalid
  Dromicus rufiventris A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Dromicus rufodorsatus Günther, 1858 -- invalid
  Dromicus sexlineatus Günther, 1882 -- invalid
  Dromicus slevini Van Denburgh, 1912 -- invalid
  Dromicus steindachneri Van Denburgh, 1912 -- invalid
  Dromicus stumpffi Boettger, 1881 -- invalid
  Dromicus tachymenoides Schmidt and Walker, 1943 -- invalid
  Dromicus taeniatus Peters, 1863 -- invalid
  Dromophis praeornatus gribinguiensis Angel, 1921 -- invalid
  Dryadophis melanolomus stuarti H. M. Smith, 1943 -- invalid
  Dryadophis melanolomus tehuanae H. M. Smith, 1943 -- invalid
  Dryadophis pleei A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Dryinus pulverulentus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Dryiophis kirtlandii mossambicana Bocage, 1895 -- invalid
  Dryiophis oatesi Günther, 1881 -- invalid
  Drymarchon caudomaculatus Wüster, Yrausquin and Mijares-Urrutia, 2001 -- valid
  Drymarchon corais (F. Boie, 1827) -- valid -- Indigo Snake, Yellow-tail Cribo
  Drymarchon corais corais (F. Boie, 1827) -- invalid -- Indigo Snake, Yellow-tailed Cribo
  Drymarchon corais orizabensis (Dugès, 1905) -- invalid
  Drymarchon corais rubidus H. M. Smith, 1941 -- invalid
  Drymarchon corais unicolor H. M. Smith, 1941 -- invalid
  Drymarchon couperi (Holbrook, 1842) -- valid -- Eastern Indigo Snake, Blue Indigo Snake, Blue Bull Snake
  Drymarchon kolpobasileus Krysko, Granatosky, Nuñez and D. J. Smith, 2016 -- valid -- Gulf Coast Indigo Snake
  Drymarchon margaritae Roze, 1959 -- valid -- Margarita Indigo Snake
  Drymarchon melanurus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Middle American Indigo Snake, Blacktail Cribo, Central American Indigo Snake
  Drymarchon melanurus erebennus (Cope, 1860) -- valid -- Texas Indigo Snake
  Drymarchon melanurus melanurus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid
  Drymarchon melanurus orizabensis (Dugès, 1905) -- valid
  Drymarchon melanurus rubidus H. M. Smith, 1941 -- valid
  Drymarchon melanurus unicolor H. M. Smith, 1941 -- valid
  Drymobius aurigulus Cope, 1861 -- invalid
  Drymobius bifossatus striatus Amaral, 1931 -- invalid
  Drymobius bifossatus triseriatus Amaral, 1931 -- invalid
  Drymobius brazilii Gomes, 1918 -- invalid
  Drymobius chloroticus (Cope, 1886) -- valid -- Culebra-corredora verdosa, Green Highland Racer
  Drymobius dorsalis Bocourt, 1890 -- invalid
  Drymobius heathii Cope, 1876 -- invalid
  Drymobius lemniscatus Cope, 1895 -- invalid
  Drymobius margaritiferus (Schlegel, 1837) -- valid -- Central American Speckled Racer, Culebra-corredora de Petatillos, Speckled Racer
  Drymobius margaritiferus fistulosus H. M. Smith, 1942 -- valid
  Drymobius margaritiferus margaritiferus (Schlegel, 1837) -- valid -- Speckled Racer, Northern Speckled Racer
  Drymobius margaritiferus maydis Villa, 1968 -- valid
  Drymobius margaritiferus occidentalis Bocourt, 1890 -- valid
  Drymobius melanotropis (Cope, 1876) -- valid -- Black Forest Racer
  Drymobius paucicarinatus Cope, 1894 -- invalid
  Drymobius percarinatus Cope, 1893 -- invalid
  Drymobius rhombifer (Günther, 1860) -- valid -- Esmarald Racer
  Drymoluber apurimacensis Lehr, Carrillo and Hocking, 2004 -- valid -- Apurímac Woodland Racer
  Drymoluber brazili (Gomes, 1918) -- valid -- Brazilian Woodland Racer
  Drymoluber dichrous (Peters, 1863) -- valid -- Northern Woodland Racer
  Dryocalamus davisonii (Blanford, 1878) -- valid -- Bridle Snake, Blanford's Bridle Snake
  Dryocalamus gracilis (Günther, 1864) -- valid -- Scarce Bridal Snake
  Dryocalamus nympha (Daudin, 1803) -- valid -- Vellore Bridal Snake
  Dryocalamus philippinus Griffin, 1909 -- valid -- Philippine Dryocalamus
  Dryocalamus subannulatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Malayan Bridal Snake, Southern Bridle Snake
  Dryocalamus tristrigatus Günther, 1858 -- valid
  Dryophiops philippina Boulenger, 1896 -- valid -- Philippine Whip Snake
  Dryophiops rubescens (Gray, 1835) -- valid -- Red Whip Snake, Brown Whip Snake
  Dryophis brevirostris Cope, 1861 -- invalid
  Dryophis fronticinctus Günther, 1858 -- invalid
  Dryophis prasinus F. Boie, 1827 -- invalid
  Dryophis preocularis Taylor, 1922 -- invalid
  Dryophylax aestivus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Dryophylax lineatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Dryophylax rutilus Prado, 1942 -- invalid
  Drysdalia coronoides (Günther, 1858) -- valid -- White-lipped Snake
  Drysdalia mastersii (Krefft, 1866) -- valid -- Masters' Snake
  Drysdalia rhodogaster (Jan in Jan and Sordelli, 1873) -- valid -- Mustard-bellied Snake
  Duberria lutrix (Linnaeus, 1758) -- valid -- Common Slug Eater
  Duberria lutrix abyssinica (Boulenger, 1894) -- valid
  Duberria lutrix atriventris (Sternfeld, 1912) -- valid
  Duberria lutrix basilewskyi Skelton-Bourgeois, 1961 -- valid
  Duberria lutrix currylindahli Laurent, 1956 -- valid
  Duberria lutrix lutrix (Linnaeus, 1758) -- valid
  Duberria lutrix rhodesiana Broadley, 1958 -- invalid
  Duberria rhodesiana Broadley, 1958 -- valid -- Zimbabwean Slug Eater
  Duberria shirana (Boulenger, 1894) -- valid -- Shire Slug Eater
  Duberria variegata (Peters, 1854) -- valid -- Variegated Slug Eater, Spotted Slug Eater
  Echidna gabonica A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Echidna inornata A. Smith, 1838 -- invalid
  Echidna mauritanica A. M. C. Duméril and Bibron, 1848 -- invalid
  Echinanthera amoena (Jan, 1863) -- valid
  Echinanthera cephalomaculata Di Bernardo, 1994 -- valid
  Echinanthera cephalostriata Di Bernardo, 1996 -- valid
  Echinanthera cyanopleura (Cope, 1885) -- valid
  Echinanthera melanostigma (Wagler, 1824) -- valid
  Echinanthera undulata (Wied-Neuwied, 1824) -- valid
  Echiopsis curta (Schlegel, 1837) -- valid -- Bardick
  Echis borkini Cherlin, 1990 -- valid
  Echis carinatus (Schneider, 1801) -- valid -- Saw-scaled Viper, Phoorsa
  Echis carinatus carinatus (Schneider, 1801) -- valid
  Echis carinatus leakeyi Stemmler and Sochurek, 1969 -- invalid
  Echis carinatus sochureki Stemmler, 1969 -- valid
  Echis coloratus Günther, 1878 -- valid -- Palestine Saw-scaled Viper
  Echis coloratus coloratus Günther, 1878 -- valid
  Echis coloratus terraesanctae Babocsay, 2003 -- valid
  Echis hughesi Cherlin, 1990 -- valid -- Hughes' Saw-scaled Viper
  Echis jogeri Cherlin, 1990 -- valid -- Joger's Saw-scaled Viper
  Echis khosatzkii Cherlin, 1990 -- valid
  Echis leucogaster Roman, 1972 -- valid -- Roman's Saw-scaled Viper
  Echis megalocephalus Cherlin, 1990 -- valid -- Cherlin's Saw-scaled Viper, Large-headed Carpet Viper
  Echis ocellatus Stemmler, 1970 -- valid -- African Saw-scaled Viper, West African Carpet Viper
  Echis omanensis Babocsay, 2004 -- valid -- Oman Saw-scaled Viper
  Echis pyramidum (Geoffroy de St-Hilaire in Savigny, 1827) -- valid -- Egyptian Saw-scaled Viper, North-East African Carpet Viper
  Echis pyramidum leakeyi Stemmler and Sochurek, 1969 -- valid
  Echis pyramidum lucidus Cherlin, 1990 -- valid
  Echis pyramidum pyramidum (Geoffroy de St-Hilaire in Savigny, 1827) -- valid
  Echis squamigera Hallowell, 1854 -- invalid
  Eirenis africanus (Boulenger, 1914) -- valid -- African Dwarf Snake
  Eirenis agassizii Jan, 1863 -- invalid
  Eirenis aurolineatus (Venzmer, 1919) -- valid
  Eirenis barani Schmidtler, 1988 -- valid -- Baran Dwarf Racer
  Eirenis barani barani Schmidtler, 1988 -- valid
  Eirenis barani bischofforum Schmidtler, 1997 -- valid
  Eirenis collaris (Ménétries, 1832) -- valid -- Collared Dwarf Racer
  Eirenis collaris collaris (Ménétriés, 1832) -- valid
  Eirenis collaris macrospilotus (Werner, 1904) -- valid
  Eirenis coronella (Schlegel, 1837) -- valid -- Crowned Dwarf Racer
  Eirenis coronella coronella (Schlegel, 1837) -- valid
  Eirenis coronella fennelli Arnold, 1982 -- valid
  Eirenis coronella ibrahimi Sivan and Werner, 2003 -- valid
  Eirenis coronelloides (Jan, 1862) -- valid
  Eirenis decemlineatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid
  Eirenis eiselti Schmidtler, 1978 -- valid -- Eiselt's Dwarf Racer
  Eirenis hakkariensis Schmidtler and Eiselt, 1991 -- valid
  Eirenis kermanensis Rajabizadeh, Schmidtler, Orlov and Soleimani, 2012 -- valid
  Eirenis levantinus Schmidtler, 1993 -- valid
  Eirenis lineomaculatus Schmidt, 1939 -- valid
  Eirenis medus (Chernov, 1940) -- valid
  Eirenis modestus (Martin, 1838) -- valid -- Asia Minor Dwarf Racer
  Eirenis modestus cilicius Schmidtler, 1993 -- valid
  Eirenis modestus modestus (Martin, 1838) -- valid
  Eirenis modestus semimaculatus (Boettger, 1876) -- valid
  Eirenis occidentalis Rajabizadeh, Nagy, Adriaens, Avci, Masroor, Schmidtler, Nazarov, Esmaeili and Christiaens, 2015 -- valid
  Eirenis persicus (Anderson, 1872) -- valid -- Dark-headed Dwarf Racer
  Eirenis persicus nigrofasciatus (Nikolsky, 1907) -- valid
  Eirenis persicus persicus (Anderson, 1872) -- valid
  Eirenis punctatolineatus (Boettger, 1892) -- valid -- Dotted Dwarf Racer
  Eirenis punctatolineatus condoni (Boulenger, 1920) -- valid
  Eirenis punctatolineatus punctatolineatus (Boettger, 1892) -- valid
  Eirenis rechingeri Eiselt, 1971 -- valid -- Rechinger's Dwarf Racer
  Eirenis rothii Jan, 1863 -- valid -- Roth's Dwarf Racer
  Eirenis thospitis Schmidtler and Lanza, 1990 -- valid
  Elachistodon westermanni Reinhardt, 1863 -- valid -- Indian Egg-eating Snake
  Elapechis duttoni Boulenger, 1904 -- invalid
  Elapechis laticinctus Werner, 1919 -- invalid
  Elapechis moebiusi Werner, 1897 -- invalid
  Elaphe anomala (Boulenger, 1916) -- valid
  Elaphe bimaculata Schmidt, 1925 -- valid -- Chinese Leopard Snake
  Elaphe carinata (Günther, 1864) -- valid -- Taiwan Stink Snake
  Elaphe carinata carinata (Günther, 1864) -- valid
  Elaphe carinata yonaguniensis Takara, 1962 -- valid
  Elaphe climacophora (H. Boie, 1826) -- valid -- Japanese Ratsnake
  Elaphe davidi (Sauvage, 1884) -- valid -- Pere David's Rat Snake
  Elaphe dione (Pallas, 1773) -- valid -- Steppes Ratsnake
  Elaphe erythrura psephenoura Leviton, 1979 -- invalid
  Elaphe flavirufa matudai H. M. Smith, 1941 -- invalid
  Elaphe flavirufa phaescens Dowling, 1952 -- invalid
  Elaphe gloydi Conant, 1940 -- invalid -- Eastern Foxsnake
  Elaphe helena monticollaris Schulz, 1992 -- invalid
  Elaphe hodgsoni (Günther, 1860) -- invalid
  Elaphe janseni Bleeker, 1859 -- invalid
  Elaphe leonardi chapaensis Bourret, 1934 -- invalid
  Elaphe moellendorffi (Boettger, 1886) -- invalid
  Elaphe perlacea Stejneger, 1929 -- invalid
  Elaphe philippina Griffin, 1909 -- invalid
  Elaphe porphyracea coxi Schulz and Helfenberger, 1998 -- invalid
  Elaphe porphyracea laticincta Schulz and Helfenberger, 1998 -- invalid
  Elaphe porphyracea pulchra Schmidt, 1925 -- invalid
  Elaphe quadrivirgata (H. Boie, 1826) -- valid -- Japanese Four-lined Ratsnake
  Elaphe quatuorlineata (Bonnaterre, 1790) -- valid -- Four-lined Ratsnake
  Elaphe quatuorlineata muenteri (Bedriaga, 1882) -- valid
  Elaphe quatuorlineata parensis Cattaneo, 1999 -- valid
  Elaphe quatuorlineata quatuorlineata (Bonnaterre, 1790) -- valid
  Elaphe quatuorlineata scyrensis Cattaneo, 1999 -- valid
  Elaphe sauromates (Pallas, 1811) -- valid -- East-Four-lined Ratsnake
  Elaphe schrenckii Strauch, 1873 -- valid -- Amur Ratsnake, Siberian Ratsnake
  Elaphe taeniura mocquardi Schulz, 1996 -- invalid
  Elaphe taeniura yunnanensis Anderson, 1879 -- invalid
  Elaphe taeniurus Cope, 1861 -- invalid
  Elaphe zoigeensis Huang, Ding, Burbrink, Yang, Huang, Ling, Chen and Zhang, 2012 -- valid -- Zoige Ratsnake
  Elaphis deppei A. M. C. Duméril, 1853 -- invalid
  Elaphis grabowskyi Fischer, 1885 -- invalid
  Elaphis lineatus Peters, 1863 -- invalid
  Elaphis pardalinus Peters, 1869 -- invalid
  Elaphis sauromates muenteri Bedriaga, 1882 -- invalid
  Elaphis spiloides A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Elapidae F. Boie, 1827 -- valid -- Cobras, Coral Snakes, Elapids, Kraits, Coralsnakes
  Elapinae F. Boie, 1827 -- valid
  Elapocalamus gracilis Boulenger, 1911 -- invalid
  Elapognathus coronatus (Schlegel, 1837) -- valid -- Crowned Snake
  Elapognathus minor (Günther, 1863) -- valid -- Short-nosed Snake, Little Brown Snake
  Elapoides rostralis Jan, 1865 -- invalid
  Elapoides sieboldii Jan, 1862 -- invalid
  Elapoidis H. Boie in F. Boie, 1827 -- valid
  Elapoidis fusca F. Boie in H. Boie, 1827 -- valid
  Elapomojus dimidiatus Jan, 1862 -- invalid
  Elapomorphus assimilis Reinhardt, 1861 -- invalid
  Elapomorphus bilineatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Elapomorphus flavotorquatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Elapomorphus gabonensis A. H. A. Duméril, 1856 -- invalid
  Elapomorphus iheringi Strauch, 1884 -- invalid
  Elapomorphus lemniscatus divittatus de Lema, 1984 -- invalid
  Elapomorphus nigrolineatus Peters, 1869 -- invalid
  Elapomorphus quinquelineatus (Raddi, 1820) -- valid -- Raddi's Lizard-eating Snake
  Elapomorphus reticulatus Peters, 1860 -- invalid
  Elapomorphus scalaris Wucherer, 1861 -- invalid
  Elapomorphus spegazzinii Boulenger, 1913 -- invalid
  Elapomorphus spegazzinii suspectus Amaral, 1924 -- invalid
  Elapomorphus suspectus Amaral, 1924 -- invalid
  Elapomorphus trilineatus Boulenger, 1889 -- invalid
  Elapomorphus wuchereri Günther, 1861 -- valid -- Wucherer's Lizard-eating Snake
  Elapops modestus Günther, 1859 -- invalid
  Elaposchema vaillanti Mocquard, 1888 -- invalid
  Elapotinus picteti Jan, 1862 -- valid
  Elaps affinis Jan, 1858 -- invalid
  Elaps aglaeope Cope, 1860 -- invalid
  Elaps alienus Werner, 1903 -- invalid
  Elaps altirostris Cope, 1860 -- invalid
  Elaps annellatus W. C. H. Peters, 1871 -- invalid
  Elaps anomalus Boulenger, 1896 -- invalid
  Elaps apiatus Jan, 1858 -- invalid
  Elaps atrofrontalis Sauvage, 1877 -- invalid
  Elaps baliocoryphus Cope, 1860 -- invalid
  Elaps bernadi Cope, 1887 -- invalid
  Elaps bertholdi Jan, 1859 -- invalid
  Elaps bibroni Jan, 1858 -- invalid
  Elaps bivirgatus F. Boie, 1827 -- invalid
  Elaps bocourti Jan in Jan and Sordelli, 1872 -- invalid
  Elaps bungaroides Cantor, 1839 -- invalid
  Elaps circinalis A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Elaps collaris Schlegel, 1837 -- invalid
  Elaps colombianus Griffin, 1916 -- invalid
  Elaps corallinus Merrem, 1820 -- invalid
  Elaps corallinus obscura Jan in Jan and Sordelli, 1872 -- invalid
  Elaps coronatus Schlegel, 1837 -- invalid
  Elaps decoratus Jan, 1858 -- invalid
  Elaps decussatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Elaps diastema A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Elaps diastema michoacanensis Dugès, 1891 -- invalid
  Elaps dissoleucus Cope, 1860 -- invalid
  Elaps distans Kennicott, 1860 -- invalid
  Elaps divaricatus Hallowell, 1855 -- invalid
  Elaps dorsalis A. Smith, 1849 -- invalid
  Elaps dorsalis Gray and Hardwicke, 1835 -- invalid
  Elaps dumerilii Jan, 1858 -- invalid
  Elaps elegans Jan, 1858 -- invalid
  Elaps ephippifer Cope, 1886 -- invalid
  Elaps euryxanthus Kennicott, 1860 -- invalid
  Elaps filiformis Günther, 1859 -- invalid
  Elaps fitzingeri Jan, 1858 -- invalid
  Elaps flaviceps Cantor, 1839 -- invalid
  Elaps frontalis A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Elaps frontifasciatus Werner, 1927 -- invalid
  Elaps fulvius sapperi Werner, 1903 -- invalid
  Elaps gouldii Gray, 1841 -- invalid
  Elaps hemprichii Jan, 1858 -- invalid
  Elaps hertwigi Werner, 1896 -- invalid
  Elaps hippocrepis W. C. H. Peters, 1862 -- invalid
  Elaps ibiboboca Merrem, 1820 -- invalid
  Elaps irregularis Reinhardt, 1843 -- invalid
  Elaps isozonus Cope, 1860 -- invalid
  Elaps jamesoni Traill in Schlegel, 1843 -- invalid
  Elaps langsdorffi Wagler, 1824 -- invalid
  Elaps macclellandi Reinhardt, 1844 -- invalid
  Elaps macgravii ancoralis Jan in Jan and Sordelli, 1872 -- invalid
  Elaps macgravii laticollaris W. C. H. Peters, 1870 -- invalid
  Elaps maculiceps Günther, 1858 -- invalid
  Elaps martii Wagler, 1824 -- invalid
  Elaps melanogenys Cope, 1860 -- invalid
  Elaps melanotus W. C. H. Peters, 1881 -- invalid
  Elaps mipartitus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Elaps muelleri Schlegel, 1837 -- invalid
  Elaps multifasciatus Jan, 1858 -- invalid
  Elaps narduccii Jan, 1863 -- invalid
  Elaps nigrocinctus Girard, 1854 -- invalid
  Elaps octolineatus Schneider, 1801 -- invalid
  Elaps ornatissimus Jan, 1858 -- invalid
  Elaps ornatus Gray, 1842 -- invalid
  Elaps psammophis Schlegel, 1837 -- invalid
  Elaps pyrrhocryptus Cope, 1862 -- invalid
  Elaps ruatanus Günther, 1895 -- invalid
  Elaps scutiventris Cope, 1870 -- invalid
  Elaps spurrelli Boulenger, 1914 -- invalid
  Elaps steindachneri Werner, 1901 -- invalid
  Elaps sunderwallii A. Smith, 1848 -- invalid
  Elaps sundevallii A. Smith, 1848 -- invalid
  Elaps surinamensis Cuvier, 1817 -- invalid
  Elaps tenere Baird and Girard, 1853 -- invalid
  Elaps tetrataenia Bleeker, 1859 -- invalid
  Elaps thepassi Bleeker, 1859 -- invalid
  Elaps triangularis Wagler, 1824 -- invalid
  Elaps tschudii Jan, 1858 -- invalid
  Elaps univirgatus Günther, 1858 -- invalid
  Elapsoidea boulengeri Boettger, 1895 -- valid -- Boulenger's Garter Snake
  Elapsoidea broadleyi Jakobsen, 1997 -- valid
  Elapsoidea chelazzii Lanza, 1979 -- invalid
  Elapsoidea chelazziorum Lanza, 1979 -- valid -- Somali Garter Snake
  Elapsoidea decosteri Boulenger, 1888 -- invalid
  Elapsoidea decosteri colleti Laurent, 1956 -- invalid
  Elapsoidea decosteri multicincta Laurent, 1956 -- invalid
  Elapsoidea guentherii Bocage, 1866 -- valid -- Günther's Garter Snake
  Elapsoidea laticincta (Werner, 1919) -- valid -- Werner's Garter Snake
  Elapsoidea loveridgei Parker, 1949 -- valid -- Loveridge's Garter Snake, East African Garter Snake
  Elapsoidea loveridgei colleti Laurent, 1956 -- valid
  Elapsoidea loveridgei loveridgei Parker, 1949 -- valid
  Elapsoidea loveridgei multicincta Laurent, 1956 -- valid
  Elapsoidea nigra Günther, 1888 -- valid -- Black Garter Snake
  Elapsoidea semiannulata Bocage, 1882 -- valid -- Angolan Garter Snake
  Elapsoidea semiannulata moebiusi (Werner, 1897) -- valid
  Elapsoidea semiannulata semiannulata Bocage, 1882 -- valid
  Elapsoidea sunderwallii fitzsimonsi Loveridge, 1944 -- invalid
  Elapsoidea sunderwallii longicauda Broadley, 1971 -- invalid
  Elapsoidea sunderwallii media Broadley, 1971 -- invalid
  Elapsoidea sunderwallii sunderwallii (A. Smith, 1848) -- invalid
  Elapsoidea sundevallii (A. Smith, 1848) -- valid -- African Garter Snake
  Elapsoidea sundevallii decosteri Boulenger, 1888 -- valid
  Elapsoidea sundevallii fitzsimonsi Loveridge, 1944 -- valid
  Elapsoidea sundevallii longicauda Broadley, 1971 -- valid
  Elapsoidea sundevallii loveridgei Parker, 1949 -- invalid
  Elapsoidea sundevallii media Broadley, 1971 -- valid
  Elapsoidea sundevallii sundevallii (A. Smith, 1848) -- valid
  Elapsoidea trapei Mane, 1999 -- valid
  Emmochliophis fugleri Fritts and H. M. Smith, 1969 -- valid -- Pinchinda Snake
  Emmochliophis miops (Boulenger, 1898) -- valid
  Emydocephalus annulatus Krefft, 1869 -- valid -- Turtle-headed Seasnake, Egg-eating Sea Snake
  Emydocephalus ijimae Stejneger, 1898 -- valid -- Turtlehead Sea Snake
  Emydocephalus szczerbaki Dotsenko, 2011 -- valid
  Enicognathus amoenus Jan, 1863 -- invalid
  Enicognathus annulatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Enicognathus bilineatus Fischer, 1885 -- invalid
  Enicognathus joberti Sauvage, 1884 -- invalid
  Enicognathus melanauchen Jan, 1863 -- invalid
  Enicognathus occipitalis Jan, 1863 -- invalid
  Enuliophis sclateri (Boulenger, 1894) -- valid -- Colombian Longtail Snake
  Enulius bifoveatus McCranie and Köhler, 1999 -- valid
  Enulius flavitorques (Cope, 1868) -- valid -- Culebra-cola larga del Pacífico, Pacific Longtail Snake
  Enulius flavitorques flavitorques (Cope, 1868) -- valid
  Enulius flavitorques sumichrasti Bocourt, 1883 -- valid
  Enulius flavitorques unicolor (Fischer, 1881) -- valid
  Enulius oligostichus H. M. Smith, Arndt and Sherbrook, 1967 -- valid -- Culebra-cola larga mexicana, Mexican Longtail Snake
  Enulius roatanensis McCranie and Köhler, 1999 -- valid
  Enulius sumichrasti Bocourt, 1883 -- invalid
  Enyaliinae -- valid
  Enyalioides Boulenger, 1885 -- valid
  Enyalioides altotambo Torres-Carvajal, Venegas and de Queiroz, 2015 -- valid -- Alto Tambo Woodlizard
  Enyalioides anisolepis Torres-Carvajal, Venegas and de Queiroz, 2015 -- valid -- Rough-scaled Woodlizard
  Enyalioides azulae Venegas, Torres-Carvajal, Duran and de Queiroz, 2013 -- valid
  Enyalioides binzayedi Venegas, Torres-Carvajal, Duran and de Queiroz, 2013 -- valid
  Enyalioides cofanorum Duellman, 1973 -- valid -- Cofan Woodlizard, Duellman's Dwarf Iguana
  Enyalioides heterolepis (Bocourt, 1874) -- valid -- Bocourt's Dwarf Iguana
  Enyalioides laticeps (Guichenot, 1855) -- valid -- Broad-headed Woodlizard, Guichenot's Dwarf Iguana
  Enyalioides microlepis (O'Shaughnessy, 1881) -- valid -- Tiny-scale Dwarf Iguana, Small-scaled Woodlizard
  Enyalioides oshaughnessyi (Boulenger, 1881) -- valid -- Red-eyed Woodlizard, O'Shaughnessy's Dwarf Iguana
  Enyalioides palpebralis (Boulenger, 1883) -- valid -- Boulenger's Dwarf Iguana, Horned Woodlizard
  Enyalioides praestabilis (O'Shaughnessy, 1881) -- valid -- Canelos Woodlizard, Dwarf Iguana
  Enyalioides rubrigularis Torres-Carvajal, de Queiroz and Etheridge, 2009 -- valid -- Red-throated Woodlizard
  Enyalioides rudolfarndti Venegas, Duran, Landauro and Lujan, 2011 -- valid
  Enyalioides sophiarothschildae Torres-Carvajal, Venegas and de Queiroz, 2015 -- valid -- Rothschild's Woodlizard
  Enyalioides touzeti Torres-Carvajal, Almendáriz, Valencia, Yúnez-Muños and Reyes, 2008 -- valid -- Touzet's Woodlizard
  Enyalius Wagler, 1830 -- valid
  Enyalius bibronii Boulenger, 1885 -- valid
  Enyalius bilineatus (A. M. C. Duméril and Bibron, 1837) -- valid -- Two-lined Fathead Anole
  Enyalius boulengeri Etheridge, 1969 -- valid -- Brazilian Fathead Anole
  Enyalius brasiliensis (Lesson, 1830) -- valid -- Brazilian Fathead Anole
  Enyalius catenatus (Wied-Neuwied, 1821) -- valid -- Wied's Fathead Anole
  Enyalius erythroceneus M. T. Rodrigues, de Freitas, Santos Silva and Viña Bertolotto, 2006 -- valid
  Enyalius iheringii Boulenger, 1885 -- valid -- Ihering's Fathead Anole
  Enyalius leechii (Boulenger, 1885) -- valid -- Leeh's Fathead Anole
  Enyalius perditus Jackson, 1978 -- valid
  Enyalius pictus (Schinz, 1822) -- valid
  Ephalophis greyae M. A. Smith, 1931 -- valid -- North-western Mangrove Seasnake
  Eristicophis macmahonii Alcock and Finn, 1897 -- valid -- McMahons Desert Viper, Asian Sand Viper
  Erpetodryas quadricarinatus F. Boie, 1827 -- invalid
  Erythrolamprus aesculapii (Linnaeus, 1758) -- valid -- Aesculapian False Coral Snake, False Coral Snake
  Erythrolamprus aesculapii aesculapii (Linnaeus, 1758) -- valid
  Erythrolamprus aesculapii monozona Jan, 1863 -- valid
  Erythrolamprus aesculapii tetrazona Jan, 1863 -- valid
  Erythrolamprus aesculapii venustissimus (Wied-Neuwied, 1821) -- valid
  Erythrolamprus albertguentheri Grazziotin, Zaher, Murphy, Scrocchi, Benavides, Zhang and Bonatto, 2012 -- valid -- Günther's Green Liophis, Günther's Green Liophis
  Erythrolamprus almadensis (Wagler, 1824) -- valid -- Almaden Ground Snake
  Erythrolamprus andinus (Dixon, 1983) -- valid
  Erythrolamprus atraventer (Dixon and Thomas, 1985) -- valid -- Dixon's Ground Snake
  Erythrolamprus bizona Jan, 1863 -- valid -- False Coral Snake
  Erythrolamprus breviceps (Cope, 1860) -- valid -- Short Ground Snake
  Erythrolamprus breviceps breviceps (Cope, 1860) -- invalid
  Erythrolamprus breviceps canaima (Roze, 1955) -- invalid
  Erythrolamprus carajasensis (da Cunha, Nascimento and Avila-Pires, 1985) -- valid
  Erythrolamprus ceii (Dixon, 1991) -- valid
  Erythrolamprus cobella (Linnaeus, 1758) -- valid -- Mangrove Snake
  Erythrolamprus cursor (Lacépède, 1789) -- valid -- Lacépède's Ground Snake
  Erythrolamprus dorsocorallinus (Esqueda, Natera, la Marca and Ilija-Fistar, 2007) -- valid
  Erythrolamprus epinephelus (Cope, 1862) -- valid
  Erythrolamprus epinephelus albiventris (Jan, 1863) -- valid
  Erythrolamprus epinephelus bimaculatus (Cope, 1899) -- valid
  Erythrolamprus epinephelus epinephelus (Cope, 1862) -- valid
  Erythrolamprus epinephelus fraseri (Boulenger, 1894) -- valid
  Erythrolamprus epinephelus juvenalis (Dunn, 1937) -- valid
  Erythrolamprus epinephelus kogiorum (Bernal-Carlo, 1994) -- valid
  Erythrolamprus epinephelus lamonae (Dunn, 1944) -- valid
  Erythrolamprus epinephelus opisthotaenius (Boulenger, 1908) -- valid
  Erythrolamprus epinephelus pseudocobella (Peracca, 1914) -- valid
  Erythrolamprus festae (Peracca, 1897) -- valid -- Drab Ground Snake
  Erythrolamprus frenatus (Werner, 1909) -- valid -- Swamp Liophis
  Erythrolamprus guentheri Garman, 1883 -- valid -- Günther's False Coral Snake
  Erythrolamprus ingeri (Roze, 1958) -- valid
  Erythrolamprus jaegeri (Günther, 1858) -- valid -- Jaeger's Ground Snake
  Erythrolamprus jaegeri coralliventris (Boulenger, 1894) -- valid
  Erythrolamprus jaegeri jaegeri (Günther, 1858) -- valid
  Erythrolamprus janaleeae (Dixon, 2000) -- valid
  Erythrolamprus juliae (Cope, 1879) -- valid -- Julia's Ground Snake
  Erythrolamprus juliae copeae (Parker, 1936) -- valid
  Erythrolamprus juliae juliae (Cope, 1879) -- valid
  Erythrolamprus longiventris (Amaral, 1925) -- valid -- Long Ground Snake
  Erythrolamprus maryellenae (Dixon, 1985) -- valid -- Maryellen's Ground Snake
  Erythrolamprus melanotus (Shaw, 1802) -- valid -- Shaw's Black-backed Snake, Shaw's Dark Ground Snake
  Erythrolamprus melanotus lamari (Dixon and Michaud, 1992) -- valid
  Erythrolamprus melanotus melanotus (Shaw, 1802) -- valid
  Erythrolamprus melanotus nesos (Dixon and Michaud, 1992) -- valid
  Erythrolamprus mertensi (Roze, 1964) -- valid -- Mertens' Tropical Forest Snake
  Erythrolamprus miliaris (Linnaeus, 1758) -- valid -- Military Ground Snake
  Erythrolamprus miliaris amazonicus (Dunn, 1922) -- valid
  Erythrolamprus miliaris chrysostomus (Cope, 1868) -- valid
  Erythrolamprus miliaris kogiorum (Bernal-Carlo, 1994) -- invalid
  Erythrolamprus miliaris merremi (Wied-Neuwied, 1821) -- valid
  Erythrolamprus miliaris miliaris (Linnaeus, 1758) -- valid
  Erythrolamprus miliaris orinus (Griffin, 1916) -- valid
  Erythrolamprus mimus (Cope, 1868) -- valid -- Mimic False Coral Snake
  Erythrolamprus mimus micrurus Dunn and Bailey, 1939 -- valid
  Erythrolamprus mimus mimus (Cope, 1868) -- valid
  Erythrolamprus mossoroensis (Hoge and Lima-Verde, 1973) -- valid
  Erythrolamprus ocellatus Peters, 1869 -- valid -- Tobago False Coral Snake, Red Snake
  Erythrolamprus oligolepis (Boulenger, 1905) -- valid
  Erythrolamprus ornatus (Garman, 1887) -- valid -- Saint Lucia Racer
  Erythrolamprus perfuscus (Cope, 1863) -- valid -- Tan Ground Snake
  Erythrolamprus poecilogyrus (Wied-Neuwied, 1825) -- valid
  Erythrolamprus poecilogyrus caesius (Cope, 1862) -- valid
  Erythrolamprus poecilogyrus poecilogyrus (Wied-Neuwied, 1825) -- valid
  Erythrolamprus poecilogyrus reticulatus (Parker, 1931) -- invalid
  Erythrolamprus poecilogyrus schotti (Schlegel, 1837) -- valid
  Erythrolamprus poecilogyrus sublineatus (Cope, 1860) -- valid
  Erythrolamprus problematicus (Myers, 1986) -- valid -- Problem Ground Snake
  Erythrolamprus pseudocorallus Roze, 1959 -- valid -- False Coral Snake
  Erythrolamprus pyburni (Markezich and Dixon, 1979) -- valid -- Pyburn's Tropical Forest Snake
  Erythrolamprus pygmaeus (Cope, 1868) -- valid -- Amazon Tropical Forest Snake
  Erythrolamprus reginae (Linnaeus, 1758) -- valid -- Royal Ground Snake
  Erythrolamprus reginae macrosoma (Amaral, 1936) -- valid
  Erythrolamprus reginae reginae (Linnaeus, 1758) -- valid
  Erythrolamprus reginae semilineatus (Wagler, 1824) -- valid
  Erythrolamprus reginae zweifeli (Roze, 1959) -- invalid
  Erythrolamprus sagittifer (Jan, 1863) -- valid -- Arrow Ground Snake
  Erythrolamprus sagittifer modestus (Koslowsky, 1896) -- valid
  Erythrolamprus sagittifer sagittifer (Jan, 1863) -- valid
  Erythrolamprus semiaureus (Cope, 1862) -- valid
  Erythrolamprus subocularis (Boulenger, 1902) -- valid
  Erythrolamprus taeniogaster (Jan, 1866) -- valid
  Erythrolamprus taeniurus (Tschudi, 1845) -- valid -- Thin Ground Snake
  Erythrolamprus torrenicola (Donnelly and Myers, 1991) -- valid -- Velvety Swamp Snake
  Erythrolamprus trebbaui (Roze, 1958) -- valid
  Erythrolamprus triscalis (Linnaeus, 1758) -- valid -- Three-scaled Ground Snake
  Erythrolamprus typhlus (Linnaeus, 1758) -- valid -- Blind Ground Snake, Velvet Swampsnake
  Erythrolamprus typhlus brachyurus (Cope, 1887) -- valid
  Erythrolamprus typhlus elaeoides (Griffin, 1916) -- valid
  Erythrolamprus typhlus typhlus (Linnaeus, 1758) -- valid
  Erythrolamprus viridis (Günther, 1862) -- valid -- Crown Ground Snake
  Erythrolamprus viridis prasinus (Jan and Sordelli, 1866) -- valid
  Erythrolamprus viridis viridis (Günther, 1862) -- valid
  Erythrolamprus vitti (Dixon, 2000) -- valid
  Erythrolamprus williamsi (Roze, 1958) -- valid -- Williams' Ground Snake
  Erythrolamprus zweifeli (Roze, 1959) -- valid -- Zweifel's Ground Snake
  Eteirodipsas colubrina citrina Boettger, 1877 -- invalid
  Etheridgeum Wallach, 1988 -- valid
  Etheridgeum pulchrum (Werner, 1924) -- valid -- Sumatra Etheridge Snake
  Eudryas amarali Stuart, 1938 -- invalid
  Eudryas slevini Stuart, 1933 -- invalid
  Eumesodon semicarinatus Cope, 1860 -- invalid
  Euprepiophis conspicillata (H. Boie, 1826) -- valid -- Burrowing Ratsnake, Japanese Woodsnake
  Euprepiophis mandarinus (Cantor, 1842) -- valid -- Mandarin Ratsnake
  Euprepiophis perlacea (Stejneger, 1929) -- valid -- Szechwan Rat Snake, Pearl-banded Rat Snake
  Eurolophosaurus Frost, Etheridge, Janies and Titus, 2001 -- valid
  Eurolophosaurus amathites (M. T. Rodrigues, 1984) -- valid -- Amathites Lava Lizard
  Eurolophosaurus divaricatus (M. T. Rodrigues, 1986) -- valid
  Eurolophosaurus nanuzae (M. T. Rodrigues, 1981) -- valid -- Rodrigues' Lava Lizard
  Eurypholis mayae Gaige, 1936 -- invalid
  Eurypholis semicarinatus Hallowell, 1861 -- invalid
  Eutaenia atrata Kennicott in Cooper, 1860 -- invalid
  Eutaenia biscutata Cope, 1883 -- invalid
  Eutaenia chrysocephala Cope, 1885 -- invalid
  Eutaenia couchii Kennicott in Baird, 1859 -- invalid
  Eutaenia cyrtopsis Kennicott, 1860 -- invalid
  Eutaenia cyrtopsis fulvus Bocourt, 1893 -- invalid
  Eutaenia cyrtopsis ocellata Cope, 1880 -- invalid
  Eutaenia dorsalis Baird and Girard, 1853 -- invalid
  Eutaenia elegans Baird and Girard, 1853 -- invalid
  Eutaenia elegans lineolata Cope, 1892 -- invalid
  Eutaenia marcianus Baird and Girard, 1853 -- invalid
  Eutaenia megalops Kennicott, 1860 -- invalid
  Eutaenia praeocularis Bocourt, 1892 -- invalid
  Eutaenia pulchrilatus Cope, 1885 -- invalid
  Eutaenia rutiloris Cope, 1885 -- invalid
  Eutaenia sackenii Kennicott, 1859 -- invalid
  Eutaenia sirtalis semifasciatus Cope, 1892 -- invalid
  Eutaenia sumichrasti Cope, 1867 -- invalid
  Eutaenia vagrans Baird and Girard, 1853 -- invalid
  Eutrachelophis bassleri Myers and McDowell, 2014 -- valid
  Eutrachelophis steinbachi (Boulenger, 1905) -- valid
  Farancia abacura (Holbrook, 1836) -- valid -- Mud Snake, Mudsnake, Red-bellied Mudsnake
  Farancia abacura abacura (Holbrook, 1836) -- valid -- Eastern Mud Snake, Eastern Mudsnake
  Farancia abacura reinwardtii (Schlegel, 1837) -- valid -- Western Mud Snake, Western Mudsnake
  Farancia erytrogramma (Palisot de Beauvois, 1801) -- valid -- Rainbow Snake
  Farancia erytrogramma erytrogramma (Palisot de Beauvois, 1801) -- valid -- Rainbow Snake, Common Rainbow Snake
  Farancia erytrogramma seminola Neill, 1964 -- valid -- South Florida Rainbow Snake
  Ficimia hardyi Mendoza-Quijano and H. M. Smith, 1993 -- valid
  Ficimia olivacea Gray, 1849 -- valid -- Culebra-naricilla huasteca
  Ficimia publia Cope, 1866 -- valid -- Culebra-naricilla manchada, Blotched Hooknose Snake
  Ficimia publia publia Cope, 1866 -- valid
  Ficimia publia taylori H. M. Smith, 1947 -- valid
  Ficimia quadrangularis Günther, 1893 -- invalid
  Ficimia ramirezi H. M. Smith and Langebartel, 1949 -- valid -- Culebra-naricilla de Ramírez, Ramirez's Hooknose Snake
  Ficimia ruspator H. M. Smith and Taylor, 1941 -- valid -- Culebra-naricilla guerrerense, Guerreran Hooknose Snake
  Ficimia streckeri Taylor, 1931 -- valid -- Mexican Hook-nosed Snake, Tamaulipan Hook-nosed Snake, Culebra-naricilla mexicana, Tamaulipan Hooknose Snake, Mexican Hooknose Snake
  Ficimia variegata (Günther, 1858) -- valid -- Culebra-naricilla de Tehuantepec, Tehuantepec Hooknose Snake
  Fimbrios klossi M. A. Smith, 1921 -- valid -- Bearded Snake
  Fimbrios smithi Ziegler, David, Miralles, Van Kien and T. Q. Nguyen, 2008 -- valid
  Furcifer angeli (Brygoo and Domergue, 1968) -- valid
  Furcifer antimena (Grandidier, 1872) -- valid
  Furcifer balteatus (A. M. C. Duméril and Bibron, 1851) -- valid
  Furcifer belalandaensis (Brygoo and Domergue, 1970) -- valid
  Furcifer bifidus (Brongniart, 1800) -- valid
  Furcifer campani (Grandidier, 1872) -- valid
  Furcifer cephalolepis (Günther, 1880) -- valid
  Furcifer labordi (Grandidier, 1872) -- valid -- Labord's Chameleon
  Furcifer lateralis (Gray, 1831) -- valid -- Carpet Chameleon
  Furcifer major (Brygoo, 1971) -- valid -- Carpet Chameleon
  Furcifer minor (Günther, 1879) -- valid -- Lesser Chameleon
  Furcifer nicosiai Jesu, Mattioli and Schimmenti, 1999 -- valid
  Furcifer oustaleti (Mocquard, 1894) -- valid
  Furcifer pardalis (Cuvier, 1829) -- valid
  Furcifer petteri (Brygoo and Domergue, 1966) -- valid
  Furcifer polleni (W. C. H. Peters, 1874) -- valid
  Furcifer rhinoceratus (Gray, 1845) -- valid
  Furcifer timoni Glaw, G. Köhler and Vences, 2009 -- valid
  Furcifer tuzetae (Brygoo, Bourgat and Domergue, 1972) -- valid
  Furcifer verrucosus (Cuvier, 1829) -- valid
  Furcifer verrucosus semicristatus (Boettger, 1894) -- valid
  Furcifer verrucosus verrucosus (Cuvier, 1829) -- valid
  Furcifer viridis Florio, Ingram, Rakotondravony, Louis and Raxworthy, 2012 -- valid
  Furcifer willsii (Günther, 1890) -- valid
  Furina barnardi (Kinghorn, 1939) -- valid -- Yellow-naped Snake
  Furina bimaculata A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Furina calonotos A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Furina diadema (Schlegel, 1837) -- valid -- Red-naped Snake
  Furina dunmalli (Worrell, 1955) -- valid -- Dunmall's Snake
  Furina multifasciata Longman, 1915 -- invalid
  Furina ornata (Gray, 1842) -- valid -- Orange-naped Snake
  Furina textilis A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Furina tristis (Günther, 1858) -- valid -- Brown-headed, Grey-naped Snake
  Gambelia copeii (Yarrow, 1882) -- valid -- Cope's Leopard Lizard
  Gambelia sila (Stejneger, 1890) -- valid -- Blunt-nosed Leopard Lizard, Bluntnose Leopard Lizard, San Joaquin Leopard Lizard
  Gambelia wislizenii (Baird and Girard, 1852) -- valid -- Long-nosed Leopard Lizard, Lagartija-leopardo narigona, Longnose Leopard Lizard
  Gambelia wislizenii maculosa (Tanner and Banta, 1977) -- valid -- Lahontan Basin Leopard Lizard
  Gambelia wislizenii punctata (Tanner and Banta, 1963) -- valid -- Pale Leopard Lizard
  Gambelia wislizenii wislizenii (Baird and Girard, 1852) -- valid -- Long-nosed Leopard Lizard
  Garthius chaseni (M. A. Smith, 1931) -- valid -- Mount Kinabalu Pit Viper, Chasen's Mountain Pitviper
  Gastropyxis principis Boulenger, 1906 -- invalid
  Geagras redimitus Cope, 1876 -- valid -- Culebra-minera de Tehuantepec, Tehuantepec Striped Snake
  Geodipsas depressiceps marlieri Laurent, 1956 -- invalid
  Geodipsas fatsibe Mercurio and Andreone, 2005 -- invalid
  Geodipsas laphystia Cadle, 1996 -- invalid
  Geodipsas procterae Loveridge, 1922 -- invalid
  Geodipsas vauerocegae Tornier, 1902 -- invalid
  Geodipsas vinckei Domergue, 1988 -- invalid
  Geodipsas zeny Cadle, 1996 -- invalid
  Geophidium dubium Peters, 1861 -- invalid
  Geophis albonuchalis Günther, 1896 -- invalid
  Geophis anocularis Dunn, 1920 -- valid -- Culebra-minera de Sierra Mije, Sierra Mije Earth Snake
  Geophis aquilonaris Legler, 1959 -- invalid
  Geophis bellus Myers, 2003 -- valid
  Geophis betaniensis Restrepo and Wright, 1987 -- valid -- Betanien Earth Snake
  Geophis bicolor Günther, 1868 -- valid -- Culebra-minera del Altiplano, Mexican Plateau Earth Snake
  Geophis blanchardi Taylor and H. M. Smith, 1939 -- valid -- Culebra-minera de Blanchard, Blanchard's Earth Snake
  Geophis brachycephalus (Cope, 1871) -- valid -- Colombian Earth Snake
  Geophis cancellatus H. M. Smith, 1941 -- valid -- Culebra-minera de Chiapas, Chiapas Earth Snake
  Geophis carinosus Stuart, 1941 -- valid -- Culebra-minera aquillada, Keeled Earth Snake
  Geophis chalybeus (Wagler, 1830) -- valid -- Culebra-minera veracruzana, Veracruz Earth Snake
  Geophis championi Boulenger, 1894 -- valid -- Panamenian Earth Snake
  Geophis damiani Wilson, McCranie and Williams, 1998 -- valid
  Geophis downsi Savage, 1981 -- valid -- Savage's Earth Snake
  Geophis dubius (Peters, 1861) -- valid -- Culebra-minera de la Mesa del Sur, Mesa del Sur Earth Snake
  Geophis duellmani H. M. Smith and Holland, 1969 -- valid -- Culebra-minera de Sierra de Juárez, Sierra Juarez Earth Snake
  Geophis dugesii Bocourt, 1883 -- valid -- Dugès' Earth Snake
  Geophis dugesii aquilonaris Legler, 1959 -- valid
  Geophis dugesii dugesii Bocourt, 1883 -- valid
  Geophis dunni Schmidt, 1932 -- valid -- Dunn's Earth Snake
  Geophis emmeli Boettger, 1888 -- invalid
  Geophis fulvoguttatus Mertens, 1952 -- valid -- Mertens' Earth Snake
  Geophis godmani Boulenger, 1894 -- valid -- Godman's Earth Snake
  Geophis guentheri Wucherer, 1861 -- invalid
  Geophis hoffmanni (Peters, 1859) -- valid -- Hoffmann's Earth Snake
  Geophis immaculatus Downs, 1967 -- valid -- Culebra-minera inmaculada, Downs' Earth Snake
  Geophis incomptus Duellman, 1959 -- valid -- Culebra-minera de Sierra Coacolman, Sierra Coalcoman Earth Snake
  Geophis isthmicus (Boulenger, 1894) -- valid -- Culebra-minera de Tehuantepec, Isthmian Earth Snake
  Geophis juarezi Nieto-Montes de Oca, 2003 -- valid
  Geophis juliai Pérez-Higareda, H. M. Smith and López-Luna, 2001 -- valid
  Geophis laticinctus H. M. Smith and Williams, 1963 -- valid -- Culebra-minera de la Mesa Central, Mesa Central Earth Snake
  Geophis laticollaris H. M. Smith, Lynch and Altig, 1965 -- valid -- Widecollar Earth Snake
  Geophis latifrons Günther, 1868 -- invalid
  Geophis latifrontalis Garman, 1883 -- valid -- Culebra-minera potosina, Potosí Earth Snake
  Geophis latifrontalis latifrontalis Garman, 1883 -- valid
  Geophis latifrontalis semiannulatus H. M. Smith, 1941 -- valid
  Geophis lorancai Canesco-Márquez, Pavón-Vázquez, López-Luna and Nieto-Mondes de Oca, 2016 -- valid
  Geophis maculiferus Taylor, 1941 -- valid -- Culebra-minera michoacana, Michoacán Earth Snake
  Geophis mutitorques (Cope, 1885) -- valid -- Culebra-minera de tierras altas, Highland Earth Snake
  Geophis nasalis (Cope, 1868) -- valid -- culeba-minera del café, Coffee Earth Snake
  Geophis nephodrymus Townsend and Wilson, 2006 -- valid
  Geophis nigroalbus Boulenger, 1908 -- valid
  Geophis nigrocinctus Duellman, 1959 -- valid -- Culebra-minera rayas negras, Black-banded Earth Snake
  Geophis occabus Pavón-Vázquez, García-Vázquez, Blancas-Hernández and Nieto-Montes de Oca, 2011 -- valid
  Geophis omiltemanus Günther, 1893 -- valid -- Culebra-minera guerrerense, Guerreran Earth Snake
  Geophis petersii Boulenger, 1894 -- valid -- Peters' Earth Snake
  Geophis pyburni Campbell and Murphy, 1977 -- valid -- Culebra-minadora de Pyburn, Pyburn's Earth Snake
  Geophis reticulatus Boulenger, 1885 -- invalid
  Geophis rhodogaster (Cope, 1868) -- valid -- Rosebelly Earth Snake
  Geophis rostralis (Jan, 1865) -- valid
  Geophis russatus H. M. Smith and Williams, 1966 -- valid -- Culebra-minadora roja, Red Earth Snake
  Geophis ruthveni Werner, 1925 -- valid -- Ruthven's Earth Snake
  Geophis sallaei Boulenger, 1894 -- valid -- Culebra-minadora de Salle, Sallae's Earth Snake
  Geophis semiannulatus H. M. Smith, 1941 -- invalid
  Geophis semidoliatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Culebra-minadora coralillo, Coral Earth Snake
  Geophis sieboldi (Jan, 1862) -- valid -- Culebra-miandora de Siebold, Siebold's Earth Snake
  Geophis stenorhynchus Günther, 1875 -- invalid
  Geophis talamancae Lips and Savage, 1994 -- valid
  Geophis tarascae Hartweg, 1959 -- valid -- Culebra-miandora tarasca, Tarascan Earth Snake
  Geophis tectus Savage and Watling, 2008 -- valid
  Geophis turbidus Pavón-Vázquez, Canseco-Márquez and Nieto-Montes de Oca, 2013 -- valid
  Geophis unicolor Fischer, 1881 -- invalid
  Geophis zeledoni Taylor, 1954 -- valid
  Gloydius blomhoffii (H. Boie, 1826) -- valid -- Mamushi
  Gloydius blomhoffii blomhoffii (H. Boie, 1826) -- valid
  Gloydius blomhoffii dubitatus (Gloyd, 1977) -- valid
  Gloydius brevicaudus (Stejneger, 1907) -- valid
  Gloydius brevicaudus brevicaudus (Stejneger, 1907) -- valid
  Gloydius brevicaudus siniticus (Gloyd, 1977) -- valid
  Gloydius halys (Pallas, 1776) -- valid -- Halys Pit Viper
  Gloydius halys affinis (Gray, 1849) -- valid
  Gloydius halys boehmei (Nilson, 1983) -- valid -- Böhme's Pitviper
  Gloydius halys caraganus (Eichwald, 1831) -- valid -- Karaganda Pitviper
  Gloydius halys caucasicus (Nikolsky, 1916) -- valid -- Caucasian Pitviper
  Gloydius halys cognatus (Gloyd, 1977) -- valid -- Alashan Pitviper
  Gloydius halys halys (Pallas, 1776) -- valid -- Siberian Pit Viper
  Gloydius halys mogoi (Bour, 1993) -- valid
  Gloydius halys stejnegeri (Rendahl, 1933) -- valid -- Gobi Pitviper
  Gloydius himalayanus (Günther, 1864) -- valid -- Himalayan Pitviper
  Gloydius intermedius (Strauch, 1868) -- valid -- Central Asian Pitviper
  Gloydius lijianlii Jiang and Zhao, 2009 -- valid
  Gloydius liupanensis Liu, Song and Luo, 1989 -- valid
  Gloydius monticola (Werner, 1922) -- valid -- Likiang Pitviper
  Gloydius saxatilis (Emelianov, 1937) -- valid
  Gloydius saxatilis changdaoensis Li, 1999 -- valid
  Gloydius saxatilis saxatilis (Emelianov, 1937) -- valid
  Gloydius shedaoensis (Zhao, 1979) -- valid -- Shedao Island Pitviper
  Gloydius shedaoensis qianshanensis Li, 1999 -- valid
  Gloydius shedaoensis shedaoensis (Zhao, 1979) -- valid
  Gloydius strauchi (Bedriaga, 1912) -- valid -- Strauch's Pitviper
  Gloydius tsushimaensis (Isogawa, Moriya and Mitsui, 1994) -- valid -- Tsushima Island Pitviper
  Gloydius ussuriensis (Emelianov, 1929) -- valid -- Ussuri Mamushi
  Glyphodon barnardi Kinghorn, 1939 -- invalid
  Glyphodon dunmalli Worrell, 1955 -- invalid
  Glyphodon tristis Günther, 1858 -- invalid
  Glypholycus bicolor Günther, 1893 -- invalid
  Glypholycus whytii Boulenger, 1897 -- invalid
  Gomesophis brasiliensis (Gomes, 1918) -- valid -- Brazilian Burrowing Snake
  Gongylosoma Fitzinger, 1843 -- valid
  Gongylosoma baliodeirus (F. Boie, 1827) -- valid -- Boie's Smooth Snake, Striped Ringneck
  Gongylosoma baliodeirus baliodeirus (F. Boie, 1827) -- valid
  Gongylosoma baliodeirus cochranae (Taylor, 1962) -- valid
  Gongylosoma longicaudum (Peters, 1871) -- valid -- Long-tailed Ringneck, Peters' Smooth Snake
  Gongylosoma mukutense Grismer, Das and Leong, 2003 -- valid -- Mukut Smooth Snake
  Gongylosoma nicobariensis (Stoliczka, 1870) -- valid
  Gongylosoma scriptum (Theobald, 1868) -- valid -- Common Ringneck
  Gonionotophis brussauxi (Mocquard, 1889) -- valid -- Mocquard's African Ground Snake
  Gonionotophis brussauxi brussauxi (Mocquard, 1889) -- valid
  Gonionotophis brussauxi prigoginei Laurent, 1956 -- valid
  Gonionotophis capensis (A. Smith, 1847) -- valid -- Cape File Snake
  Gonionotophis chanleri (Stejneger, 1893) -- valid -- Unicolor File Snake
  Gonionotophis crossi (Boulenger, 1895) -- valid -- Crosse's File Snake, African File Snake
  Gonionotophis egbensis (Dunger, 1966) -- valid -- Dunger's File Snake
  Gonionotophis gabouensis (Trape and Mané, 2005) -- valid -- Gabou File Snake
  Gonionotophis grantii (Günther, 1863) -- valid -- Savanna Lesser File Snake
  Gonionotophis guirali (Mocquard, 1887) -- valid -- Mocquard's File Snake
  Gonionotophis klingi Matschie, 1893 -- valid -- Matschie's African Ground Snake
  Gonionotophis laurenti (de Witte, 1959) -- valid
  Gonionotophis nyassae (Günther, 1888) -- valid -- Dwarf File Snake, Black File Snake
  Gonionotophis poensis (A. Smith, 1849) -- valid -- Western Forest File Snake
  Gonionotophis savorgnani (Mocquard, 1887) -- valid -- Congo File Snake
  Gonionotophis stenophthalmus (Mocquard, 1887) -- valid -- Small-eyed File Snake
  Gonionotophis vernayi (Bogert, 1940) -- valid -- Angola File Snake
  Gonionotus brussauxi Mocquard, 1889 -- invalid
  Gonocephalus Kaup, 1825 -- valid
  Gonocephalus abbotti Cochran, 1922 -- valid -- Abbott's Anglehead Lizard
  Gonocephalus bellii (A. M. C. Duméril and Bibron, 1837) -- valid -- Bell's Forest Dragon
  Gonocephalus beyschlagi Boettger, 1892 -- valid -- Sumatra Forest Dragon
  Gonocephalus bornensis (Schlegel, 1851) -- valid -- Borneo Forest Dragon
  Gonocephalus chamaeleontinus (Laurenti, 1768) -- valid -- Chameleon Forest Dragon
  Gonocephalus doriae W. C. H. Peters, 1871 -- valid -- Peters' Forest Dragon
  Gonocephalus grandis (Gray, 1845) -- valid -- Giant Forest Dragon
  Gonocephalus interruptus Boulenger, 1885 -- valid -- Boulenger's Forest Dragon, Mindoro Anglehead
  Gonocephalus klossi Boulenger, 1920 -- valid -- Kloss' Forest Dragon
  Gonocephalus kuhlii (Schlegel, 1851) -- valid
  Gonocephalus lacunosus Manthey and Denzer, 1991 -- valid -- Manthey's Forest Dragon
  Gonocephalus liogaster (Günther, 1872) -- valid -- Tropical Forest Dragon
  Gonocephalus megalepis (Bleeker, 1860) -- valid -- Bleeker's Forest Dragon
  Gonocephalus mjobergi M. A. Smith, 1925 -- valid
  Gonocephalus semperi (W. C. H. Peters, 1867) -- valid -- Mindoro Forest Dragon
  Gonocephalus sophiae (Gray, 1845) -- valid -- Negros Forest Dragon
  Gonyophis margaritatus (Peters, 1871) -- invalid
  Gonyosoma boulengeri (Mocquard, 1897) -- valid -- Rhinoceros Snake, Rhino Rat Snake
  Gonyosoma frenatum (Gray, 1853) -- valid
  Gonyosoma jansenii (Bleeker, 1859) -- valid -- Celebes Black-tailed Ratsnake
  Gonyosoma margaritatum Peters, 1871 -- valid -- Rainbow Tree Snake
  Gonyosoma oxycephalum (F. Boie, 1827) -- valid -- Red-tailed Green Ratsnake
  Gonyosoma prasinum (Blyth, 1854) -- valid -- Green Trinket Snake, Green Bush Rat Snake
  Gowidon Wells and Wellington, 1983 -- valid
  Gowidon longirostris (Boulenger, 1883) -- valid -- Long-snouted Lashtail, Long-nosed Water Dragon
  Gowidon temporalis (Günther, 1867) -- valid -- Northern Water Dragon, Swamplands Lashtail
  Grayia caesar (Günther, 1863) -- valid -- Caesar's African Water Snake
  Grayia ornata (Bocage, 1866) -- valid -- Ornate African Water Snake
  Grayia smithii (Leach, 1818) -- valid -- Smith's African Water Snake
  Grayia tholloni Mocquard, 1897 -- valid -- Tholloni's African Water Snake
  Gyalopion canum (Cope, 1860) -- valid -- Western Hook-nosed Snake, Chihuahuan Hook-nosed Snake, Culebra-nariz ganchuda de Chihuahua, Western Hooknose Snake
  Gyalopion quadrangulare (Günther, 1893) -- valid -- Thornscrub Hook-nosed Snake, Culebra-nariz ganchuda de desierto, Thornscrub Hooknose Snake, Desert Hooknose Snake
  Haitiophis anomalus (Peters, 1863) -- valid -- Hispaniola Racer
  Haldea Baird and Girard, 1853 -- valid
  Haldea striatula (Linnaeus, 1766) -- valid -- Rough Earthsnake, Rough Earth Snake
  Halys acutus Günther, 1888 -- invalid
  Halys himalayanus Günther, 1864 -- invalid
  Hamadryas hannah Cantor, 1836 -- invalid
  Hapsidophrys lineatus Fischer, 1856 -- valid -- Black-lined Green Snake
  Hapsidophrys principis (Boulenger, 1906) -- valid
  Hapsidophrys smaragdinus (Schlegel, 1837) -- valid -- Emerald Snake
  Harpesaurus Boulenger, 1885 -- valid
  Harpesaurus beccarii Doria, 1888 -- valid -- Sumatra Nose-horned Lizard
  Harpesaurus borneensis (Mertens, 1924) -- valid
  Harpesaurus ensicauda Werner, 1913 -- valid -- Nias Nose-horned Lizard
  Harpesaurus modiglianii Vinciguerra, 1933 -- valid -- Modigliani's Nose-horned Lizard
  Harpesaurus tricinctus (A. M. C. Duméril in A. M. C. and A. H. A. Duméril, 1851) -- valid -- Java Nose-horned Lizard
  Hebius Thompson, 1913 -- valid
  Hebius andreae (Ziegler and Quyet, 2006) -- valid -- Andrea's Keelback
  Hebius arquus (David and Vogel, 2010) -- valid
  Hebius atemporale (Bourret, 1934) -- valid -- Tonkin Keelback
  Hebius beddomei (Günther, 1864) -- valid -- Beddome's Keelback, Nilgiri Keelback
  Hebius bitaeniatum (Wall, 1925) -- valid -- Kutkai Keelback
  Hebius boulengeri (Gressitt, 1937) -- valid -- Tai-yong Keelback, Boulenger's Keelback
  Hebius celebicum (W. C. H. Peters and Doria, 1878) -- valid -- Sulawesi Keelback
  Hebius clerki (Wall, 1925) -- valid -- Yunnan Keelback
  Hebius concelarum (Malnate, 1963) -- valid
  Hebius craspedogaster (Boulenger, 1899) -- valid -- Kuatun Keelback
  Hebius deschauenseei (Taylor, 1934) -- valid -- Deschauensee's Keelback, Northern Keelback
  Hebius flavifrons (Boulenger, 1887) -- valid -- Sabah Keelback
  Hebius frenatum (Dunn, 1923) -- valid
  Hebius groundwateri (M. A. Smith, 1922) -- valid -- Groundwater's Keelback
  Hebius inas (Laidlaw, 1901) -- valid -- Malayan Mountain Keelback
  Hebius ishigakiense (Malnate and Munsterman, 1960) -- valid -- Yaeyama Keelback
  Hebius johannis (Boulenger, 1908) -- valid -- Johann's Keelback
  Hebius kerinciense (David and Das, 2003) -- valid
  Hebius khasiense (Boulenger, 1890) -- valid -- Khasi Keelback, Khasi Hills Keelback
  Hebius leucomystax (David, Bain, T. Q. Nguyen, Orlov, Vogel, T. N. Vu and Ziegler, 2007) -- valid -- White-lipped Keelback
  Hebius metusium (Inger, Zhao, Shaffer and Wu, 1990) -- valid -- Wa Shan Keelback
  Hebius miyajimae (Maki, 1931) -- valid -- Maki's Keelback
  Hebius modestum (Günther, 1875) -- valid -- Modest Keelback
  Hebius monticola (Jerdon, 1853) -- valid -- Wynad Keelback
  Hebius nicobariense (Sclater, 1891) -- valid -- Nicobar Island Keelback
  Hebius octolineatum (Boulenger, 1904) -- valid -- Eight-lined Keelback
  Hebius optatum (Hu and Zhao, 1966) -- valid -- Mount Omei Keelback
  Hebius parallelum (Boulenger, 1890) -- valid -- Yunnan Keelback
  Hebius pealii (Sclater, 1891) -- valid -- Assam Keelback
  Hebius petersii (Boulenger, 1893) -- valid -- Peters' Keelback
  Hebius popei (Schmidt, 1925) -- valid -- Pope's Keelback
  Hebius pryeri (Boulenger, 1887) -- valid -- Pryer's Keelback
  Hebius sanguineum (Smedley, 1931) -- valid -- Cameron Highlands Keelback
  Hebius sarasinorum (Boulenger, 1896) -- valid -- Sarasin's Keelback
  Hebius sarawacense (Günther, 1872) -- valid -- Sarawak Keelback
  Hebius sauteri (Boulenger, 1909) -- valid -- Kosempo Keelback
  Hebius taronense (M. A. Smith, 1940) -- valid -- Kachin Keelback
  Hebius venningi (Wall, 1910) -- valid -- Chin Hills Keelback
  Hebius vibakari (H. Boie, 1826) -- valid -- Japanese Keelback
  Hebius vibakari danjoensis (Toriba, 1986) -- valid
  Hebius vibakari ruthveni (Van Denburgh, 1923) -- valid
  Hebius vibakari vibakari (H. Boie, 1826) -- valid
  Hebius viperinum (Schenkel, 1901) -- valid
  Hebius xenura (Wall, 1907) -- valid -- Wall's Keelback
  Helicops alleni Garman, 1874 -- invalid
  Helicops angulatus (Linnaeus, 1758) -- valid -- Brown-banded Watersnake, Mountain Keelback
  Helicops apiaka Kawashita-Ribeiro, Ávila and Morais, 2013 -- valid
  Helicops bangweolicus Mertens, 1936 -- invalid
  Helicops carinicaudus (Wied-Neuwied, 1825) -- valid -- Wied's Keelback
  Helicops carinicaudus carinicaudus (Wied-Neuwied, 1825) -- valid
  Helicops carinicaudus triserialis Lindholm in Lampe and Lindholm, 1902 -- valid
  Helicops danieli Amaral, 1938 -- valid -- Daniel's Keelback
  Helicops gomesi Amaral, 1921 -- valid -- Sao Paulo Keelback
  Helicops hagmanni Roux, 1910 -- valid -- Hagmann's Keelback
  Helicops infrataeniatus Jan, 1865 -- valid
  Helicops leopardinus (Schlegel, 1837) -- valid -- Leopard Keelback
  Helicops modestus Günther, 1861 -- valid -- Olive Keelback
  Helicops nentur Costa, Santana, Leal, Koroiva and Garcia, 2016 -- valid
  Helicops pastazae Shreve, 1934 -- valid -- Shreve's Keelback
  Helicops petersi Rossman, 1976 -- valid -- Spiral Keelback
  Helicops polylepis Günther, 1861 -- valid -- Norman's Keelback
  Helicops scalaris Jan, 1865 -- valid -- Ladder Keelback, Hoge's Keelback
  Helicops tapajonicus Da Frota, 2005 -- valid
  Helicops trivittatus (Gray, 1849) -- valid -- Equatorial Keelback
  Helicops wagleri Jan, 1863 -- invalid
  Helicops yacu Rossman and Dixon, 1975 -- valid -- Peru Keelback
  Helicopsoides typicus Mocquard, 1890 -- invalid
  Helophis de Witte and Laurent, 1942 -- valid
  Helophis schoutedeni (de Witte, 1942) -- valid -- Schouteden's Sun Snake
  Hemachatus haemachatus (Bonnaterre, 1790) -- valid -- Ring-necked Spitting Cobra, Rinkhals, Ringhals
  Hemerophis socotrae (Günther, 1881) -- valid -- Socotran Racer
  Hemiaspis damelii (Günther, 1876) -- valid -- Grey Snake
  Hemiaspis signata (Jan, 1859) -- valid -- Marsh Snake, Black-bellied Swamp Snake, Swamp Snake
  Hemibungarus calligaster (Wiegmann in Meyen, 1835) -- valid -- Barred Coral Snake
  Hemibungarus calligaster calligaster (Wiegmann in Meyen, 1835) -- invalid
  Hemibungarus calligaster gemianulis W. C. H. Peters, 1872 -- invalid
  Hemibungarus calligaster mcclungi Taylor, 1922 -- invalid
  Hemibungarus gemianulis W. C. H. Peters, 1872 -- valid -- Philippine False Coral Snake, Barred Coral Snake
  Hemibungarus hatori (Takahashi, 1930) -- invalid
  Hemibungarus japonicus (Günther, 1868) -- invalid
  Hemibungarus kelloggi Pope, 1928 -- invalid
  Hemibungarus macclellandi (Reinhardt, 1844) -- invalid
  Hemibungarus macclungi Taylor, 1922 -- invalid
  Hemibungarus sauteri (Steindachner, 1913) -- invalid
  Hemirhagerrhis hildebrandtii (Peters, 1878) -- valid -- Kenyan Bark Snake, Northern Bark Snake
  Hemirhagerrhis kelleri Boettger, 1893 -- valid -- Keller's Bark Snake, Striped Bark Snake
  Hemirhagerrhis nototaenia (Günther, 1864) -- valid -- Mopane Snake, Southeastern Bark Snake, Eastern Bark Snake
  Hemirhagerrhis viperina (Bocage, 1873) -- valid -- Western Bark Snake
  Hemorrhois algirus (Jan, 1863) -- valid -- Algerian Whip Snake
  Hemorrhois algirus algirus (Jan, 1863) -- valid
  Hemorrhois algirus intermedius (Werner, 1929) -- valid
  Hemorrhois hippocrepis (Linnaeus, 1758) -- valid -- Horseshoe Snake, Horseshoe Whip Snake
  Hemorrhois hippocrepis hippocrepis (Linnaeus, 1758) -- valid
  Hemorrhois hippocrepis nigrescens (Cattaneo, 1985) -- valid
  Hemorrhois nummifer (Reuss, 1834) -- valid -- Coin-Marked Snake, Asian Racer
  Hemorrhois ravergieri (Ménétries, 1832) -- valid -- Spotted Whip Snake
  Hemorrhois ravergieri cernovi (Mertens, 1952) -- valid
  Hemorrhois ravergieri ravergieri (Ménétries, 1832) -- valid
  Henicognathus venustissimus Günther, 1893 -- invalid
  Herpetodryas bernierii A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Herpetodryas biserialis Günther, 1860 -- invalid
  Herpetodryas brunneus Günther, 1858 -- invalid
  Herpetodryas carinatus flavolineata Jan, 1863 -- invalid
  Herpetodryas carinatus flavopicta Werner, 1909 -- invalid
  Herpetodryas carinatus vincenti Boulenger, 1891 -- invalid
  Herpetodryas dendrophis Schlegel, 1837 -- invalid
  Herpetodryas dichroa Peters, 1863 -- invalid
  Herpetodryas dipsas Schlegel, 1837 -- invalid
  Herpetodryas goudoti Schlegel, 1837 -- invalid
  Herpetodryas laevis Fischer, 1881 -- invalid
  Herpetodryas nuchalis Peters, 1863 -- invalid
  Herpetodryas quadrilineatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Herpetodryas reticulata Peters, 1863 -- invalid
  Herpetodryas rhodogaster Schlegel, 1837 -- invalid
  Herpetodryas serra Schlegel, 1837 -- invalid
  Herpetodryas tricolor Schlegel, 1837 -- invalid
  Herpetodryas trilineatus Burmeister, 1861 -- invalid
  Herpetoreas Günther, 1860 -- valid
  Herpetoreas burbrinki Guo, Zhu, Liu, Zhang, Li, Huang and Pyron, 2014 -- valid -- Burbrink's Keelback
  Herpetoreas platyceps (Blyth, 1854) -- valid -- Himalayan Keelback
  Herpetoreas sieboldii Günther, 1860 -- valid -- Siebold's Keelback, Sikkim Keelback
  Herpetrodryas frenatus Gray, 1853 -- invalid
  Heterodon defilippi Jan, 1863 -- invalid
  Heterodon diadema A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Heterodon dorbignyi A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Heterodon gloydi Edgren, 1952 -- valid -- Dusty Hognose Snake, Dusty Hog-nosed Snake
  Heterodon guianensis Troschel, 1848 -- invalid
  Heterodon histricus Jan, 1863 -- invalid
  Heterodon kennerlyi Kennicott, 1860 -- valid -- Mexican Hog-nosed Snake, Mexican Hog-nose Snake
  Heterodon madagascariensis A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Heterodon modestus Günther, 1863 -- invalid
  Heterodon nasicus Baird and Girard, 1852 -- valid -- Western Hog-nosed Snake, Culebra-nariz de cerdo occidental, Western Hognose Snake, Plains Hognose Snake, Plains Hog-nosed Snake
  Heterodon nattereri Steindachner, 1867 -- invalid
  Heterodon platirhinos Latreille, 1801 -- valid -- Eastern Hog-nosed Snake, Eastern Hognose Snake
  Heterodon pulcher Jan, 1863 -- invalid
  Heterodon rhinostoma Schlegel, 1837 -- invalid
  Heterodon semicinctus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Heterodon simus (Linnaeus, 1766) -- valid -- Southern Hog-nosed Snake, Southern Hognose Snake
  Heterolepis capensis A. Smith, 1847 -- invalid
  Heterolepis guirali Mocquard, 1887 -- invalid
  Heterolepis poensis A. Smith, 1849 -- invalid
  Heterolepis savorgnani Mocquard, 1887 -- invalid
  Heterolepis stenophthalmus Mocquard, 1887 -- invalid
  Heteroliodon fohy Glaw, Vences and Nussbaum, 2005 -- valid
  Heteroliodon lava Nussbaum and Raxworthy, 2000 -- valid
  Heteroliodon occipitalis (Boulenger, 1896) -- valid
  Heterophis resimus Peters, 1862 -- invalid
  Heterurus arctifasciatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Hierophis andreanus (Werner, 1917) -- valid -- Andreas' Racer
  Hierophis cypriensis (Schätti, 1985) -- invalid
  Hierophis gemonensis (Laurenti, 1768) -- valid -- Balkan Whip Snake, Balkan Racer
  Hierophis spinalis (Peters, 1866) -- invalid
  Hierophis viridiflavus (Lacépède, 1789) -- valid -- Western Whip Snake, Dark Green Snake, Green Whip Snake
  Hierophis viridiflavus carbonarius (Bonaparte, 1833) -- valid
  Hierophis viridiflavus viridiflavus (Lacépède, 1789) -- valid
  Himantodes gemmistratus Cope, 1861 -- invalid
  Himantodes inornatus Boulenger, 1896 -- invalid
  Himantodes lentiferus Cope, 1894 -- invalid
  Himantodes tenuissimus Cope, 1867 -- invalid
  Holarchus maculatus Taylor, 1918 -- invalid
  Holarchus perkinsi Taylor, 1925 -- invalid
  Holbrookia approximans Baird, 1859 -- valid -- Speckled Earless Lizard
  Holbrookia elegans Bocourt, 1874 -- valid -- Elegant Earless Lizard
  Holbrookia elegans elegans Bocourt, 1874 -- valid
  Holbrookia elegans thermophila Barbour, 1921 -- valid -- Sonoran Earless Lizard
  Holbrookia lacerata Cope, 1880 -- valid -- Spot-tailed Earless Lizard, Lagartija-sorda cola punteada, Plateau Earless Lizard, Northern Spot-tailed Earless Lizard
  Holbrookia lacerata lacerata Cope, 1880 -- valid -- Plateau Earless Lizard, Northern Spot-tailed Earless Lizard
  Holbrookia lacerata subcaudalis R. W. Axtell, 1956 -- valid -- Southern Earless Lizard, Southern Spot-tailed Earless Lizard
  Holbrookia maculata Girard, 1851 -- valid -- Lesser Earless Lizard, Common Earless Lizard, Lagartija-sorda menor, Common Lesser Earless Lizard
  Holbrookia maculata bunkeri H. M. Smith, 1935 -- valid -- Bunker's Earless Lizard
  Holbrookia maculata campi K. P. Schmidt, 1921 -- valid
  Holbrookia maculata dickersonae K. P. Schmidt, 1921 -- valid
  Holbrookia maculata flavilenta Cope, 1883 -- valid
  Holbrookia maculata maculata Girard, 1851 -- valid -- Northern Earless Lizard, Great Plains Earless Lizard
  Holbrookia maculata perspicua R. W. Axtell, 1956 -- valid -- Eastern Earless Lizard, Praire Earless Lizard
  Holbrookia maculata pulchra K. P. Schmidt, 1921 -- valid -- Huachuca Earless Lizard
  Holbrookia maculata ruthveni H. M. Smith, 1943 -- valid -- Bleached Earless Lizard
  Holbrookia propinqua Baird and Girard, 1852 -- valid -- Keel-scaled Earless Lizard, Keeled Earless Lizard, Lagartija-sorda carinata
  Holbrookia propinqua piperata H. M. Smith and Burger, 1950 -- valid
  Holbrookia propinqua propinqua Baird and Girard, 1852 -- valid -- Keeled Earless Lizard, Keel-scaled Earless Lizard, Northern Keeled Earless Lizard
  Holbrookia propinqua stonei Harper, 1932 -- valid
  Hologerrhum Günther, 1858 -- valid
  Hologerrhum dermali Brown, Leviton, Ferner and Sison, 2001 -- valid
  Hologerrhum philippinum Günther, 1858 -- valid -- Philippine Stripe-lipped Snake
  Holuropholis olivaceus A. H. A. Duméril, 1856 -- invalid
  Homalocephalus heterurus Jan, 1863 -- invalid
  Homalocranion deppei Bocourt, 1883 -- invalid
  Homalocranion schistosum Bocourt, 1883 -- invalid
  Homalocranion supracinctum Peters, 1863 -- invalid
  Homalocranion taeniatum Bocourt, 1883 -- invalid
  Homalocranium alticola Boulenger, 1903 -- invalid
  Homalocranium jani Günther, 1895 -- invalid
  Homalocranium marcapatae Boulenger, 1902 -- invalid
  Homalocranium melanocephalum bocourti Günther, 1895 -- invalid
  Homalocranium moestum Günther, 1863 -- invalid
  Homalocranium nigrum Boulenger, 1914 -- invalid
  Homalocranium semicinctum A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Homalopsis leopardina Schlegel, 1837 -- invalid
  Homalopsis quinquevittatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Homalopsis reinwardtii Schlegel, 1837 -- invalid
  Homalosoma abyssinicum Boulenger, 1894 -- invalid
  Homalosoma coronelloides Jan, 1862 -- invalid
  Homalosoma lutrix atriventris Sternfeld, 1912 -- invalid
  Homalosoma melanocephalum Jan, 1862 -- invalid
  Homalosoma shiranum Boulenger, 1894 -- invalid
  Homalosoma variegatum Peters, 1854 -- invalid
  Homoroselaps Jan, 1858 -- valid
  Homoroselaps dorsalis (A. Smith, 1849) -- valid -- Striped Harelquin Snake, Striped Dwarf Garter Snake
  Homoroselaps lacteus (Linnaeus, 1758) -- valid -- Spotted Harlequin Snake
  Hoplocephalus bitorquatus (Jan, 1859) -- valid -- Pale-headed Snake
  Hoplocephalus bungaroides (Schlegel, 1837) -- valid -- Broad-headed Snake
  Hoplocephalus carinatus Krefft, 1863 -- invalid
  Hoplocephalus coronoides Günther, 1858 -- invalid
  Hoplocephalus damelii Günther, 1876 -- invalid
  Hoplocephalus elapoides Boulenger, 1890 -- invalid
  Hoplocephalus flagellum McCoy, 1878 -- invalid
  Hoplocephalus mastersii Krefft, 1866 -- invalid
  Hoplocephalus minor Günther, 1863 -- invalid
  Hoplocephalus nigrescens Günther, 1862 -- invalid
  Hoplocephalus nigriceps Günther, 1863 -- invalid
  Hoplocephalus nigrostriatus Krefft, 1864 -- invalid
  Hoplocephalus ornatus De Vis, 1884 -- invalid
  Hoplocephalus pallidiceps Günther, 1858 -- invalid
  Hoplocephalus par Boulenger, 1884 -- invalid
  Hoplocephalus ramsayi Krefft, 1864 -- invalid
  Hoplocephalus spectabilis Krefft, 1869 -- invalid
  Hoplocephalus stephensii Krefft, 1869 -- valid -- Stephens's Banded Snake
  Hoplocephalus superbus Günther, 1858 -- invalid
  Hoplocephalus sutus W. C. H. Peters, 1863 -- invalid
  Hoplocephalus vestigiatus De Vis, 1884 -- invalid
  Hoplocercidae -- valid
  Hoplocercus Fitzinger, 1843 -- valid
  Hoplocercus spinosus Fitzinger, 1843 -- valid -- Spiny Weapontail
  Hormonotus modestus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Uganda House Snake, Yellow Forest Snake
  Hurria carinata Kuhl, 1820 -- invalid
  Hydrablabes Boulenger, 1891 -- valid
  Hydrablabes periops (Günther, 1872) -- valid -- Olive Small-eyed Snake
  Hydrablabes praefrontalis (Mocquard, 1890) -- valid -- Mocquard's Small-eyed Snake
  Hydraethiops Günther, 1872 -- valid
  Hydraethiops laevis Boulenger, 1904 -- valid
  Hydraethiops melanogaster Günther, 1872 -- valid -- Blackbelly Snake
  Hydrelaps darwiniensis Boulenger, 1896 -- valid -- Port Darwin Seasnake
  Hydrodynastes bicinctus (Hermann, 1804) -- valid -- Herrmann's Water Snake
  Hydrodynastes bicinctus bicinctus (Hermann, 1804) -- valid
  Hydrodynastes bicinctus schultzi Hoge, 1966 -- valid
  Hydrodynastes gigas (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- False Water Cobra
  Hydrodynastes melanogigas Franco, Fernandes and Bentim, 2007 -- valid
  Hydromorphus concolor Peters, 1859 -- valid -- Costa Rica Water Snake
  Hydromorphus dunni Slevin, 1942 -- valid -- Dunn's Water Snake
  Hydrophiidae Fitzinger, 1843 -- invalid -- Sea Snakes, Seasnakes
  Hydrophiinae Fitzinger, 1843 -- valid
  Hydrophis atriceps Günther, 1864 -- valid -- Black-headed Seasnake
  Hydrophis belcheri (Gray, 1849) -- valid -- Faint-banded Seasnake
  Hydrophis bituberculatus W. C. H. Peters, 1873 -- valid -- Peters' Sea Snake
  Hydrophis brookii Günther, 1872 -- valid
  Hydrophis caerulescens (Shaw, 1802) -- valid -- Dwarf Seasnake
  Hydrophis caerulescens caerulescens (Shaw, 1802) -- valid
  Hydrophis caerulescens hybridus Schlegel, 1844 -- valid
  Hydrophis cantoris Günther, 1864 -- valid -- Cantor's Narrow-headed Sea Snake
  Hydrophis coggeri (Kharin, 1984) -- valid -- Slender-necked Seasnake
  Hydrophis curtus (Shaw, 1802) -- valid -- Shaw's Sea Snake, Spine-bellied Sea Snake, Hardwicke's Sea Snake, Short Sea Snake
  Hydrophis cyanocinctus Daudin, 1803 -- valid -- Annulated Sea Snake
  Hydrophis czeblukovi (Kharin, 1984) -- valid -- Fine-spined Seasnake
  Hydrophis diadema Günther, 1864 -- invalid
  Hydrophis donaldi Ukuwela, Sanders and Fry, 2012 -- valid
  Hydrophis elegans (Gray, 1842) -- valid -- Elegant Seasnake, Bar-bellied Seasnake
  Hydrophis fasciatus (Schneider, 1799) -- valid -- Striped Sea Snake
  Hydrophis gracilis (Shaw, 1802) -- valid -- Graceful Small-headed Seasnake, Slender Seasnake, Common Small-headed Sea Snake
  Hydrophis hardwickii (Gray, 1835) -- valid -- Hardwicke's Spine-bellied Seasnake
  Hydrophis hendersoni (Boulenger, 1903) -- valid
  Hydrophis hybrida Schlegel, 1844 -- invalid
  Hydrophis inornatus (Gray, 1849) -- valid -- Inornate Sea Snake, Plain Seasnake
  Hydrophis jerdonii (Gray, 1849) -- valid -- Jerdon's Sea Snake
  Hydrophis jerdonii jerdonii (Gray, 1849) -- valid
  Hydrophis jerdonii siamensis (M. A. Smith, 1926) -- valid
  Hydrophis kingii Boulenger, 1896 -- valid -- Spectacled Seasnake, King's Seasnake
  Hydrophis klossi Boulenger, 1912 -- valid -- Kloss' Sea Snake
  Hydrophis laboutei Rasmussen and Ineich, 2000 -- valid
  Hydrophis lamberti M. A. Smith, 1917 -- valid -- Lambert's Sea Snake
  Hydrophis lapemoides (Gray, 1849) -- valid -- Persian Gulf Sea Snake
  Hydrophis macdowelli Kharin, 1983 -- valid -- Small-headed Seasnake, McDowell's Seasnake
  Hydrophis major (Shaw, 1802) -- valid -- Olive-headed Seasnake, Greater Seasnake
  Hydrophis mamillaris (Daudin, 1803) -- valid -- Bombay Sea Snake
  Hydrophis melanocephalus Gray, 1849 -- valid -- Slender-necked Seasnake
  Hydrophis melanosoma Günther, 1864 -- valid -- Black-banded Seasnake, Robust Seasnake
  Hydrophis nigrocinctus Daudin, 1803 -- valid -- Black-banded Sea Snake
  Hydrophis obscurus Daudin, 1803 -- valid -- Russel's Sea Snake, Estuarine Sea Snake
  Hydrophis ocellatus Gray, 1849 -- valid
  Hydrophis ornatus (Gray, 1842) -- valid -- Ornate Reef Seasnake
  Hydrophis ornatus godeffroyi W. C. H. Peters, 1873 -- valid
  Hydrophis ornatus maresinensis Mittleman, 1947 -- valid
  Hydrophis ornatus ornatus (Gray, 1842) -- valid
  Hydrophis pachycercos Fischer, 1855 -- valid
  Hydrophis pacificus Boulenger, 1896 -- valid -- Pacific Seasnake
  Hydrophis parviceps M. A. Smith, 1935 -- valid
  Hydrophis peronii (A. M. C. Duméril, 1853) -- valid -- Spiny-headed Seasnake
  Hydrophis platurus (Linnaeus, 1766) -- valid -- Yellowbelly Sea Snake, Pelagic Sea Snake, Yellow-bellied Seasnake, Yellow-bellied Sea Snake, Serpiente-marina pelágica
  Hydrophis schistosus Daudin, 1803 -- valid -- Common Seasnake, Beaked Seasnake, Hook-nosed Sea Snake
  Hydrophis semperi Garman, 1881 -- valid -- Lake Taal Snake
  Hydrophis sibauensis Rasmussen, Auliya and Böhme, 2001 -- valid -- Kalimantan Sea Snake
  Hydrophis spiralis (Shaw, 1802) -- valid -- Yellow Sea Snake
  Hydrophis stokesii (Gray, 1846) -- valid -- Stoke's Seasnake
  Hydrophis stricticollis Günther, 1864 -- valid -- Collared Sea Snake
  Hydrophis sublaevis melanocephalus Gray, 1849 -- invalid
  Hydrophis torquatus Günther, 1864 -- valid -- West Coast Black-headed Sea Snake
  Hydrophis torquatus aagaardi M. A. Smith, 1920 -- valid
  Hydrophis torquatus diadema Günther, 1864 -- valid
  Hydrophis torquatus torquatus Günther, 1864 -- valid
  Hydrophis viperinus (P. Schmidt, 1852) -- valid -- Viperine Sea Snake
  Hydrophis vorisi Kharin, 1984 -- valid -- Estuarine Seasnake
  Hydrophis zweifeli (Kharin, 1985) -- valid -- Sepik Beaked Seasnake, Zweifel's Beaked Seasnake
  Hydrops caesurus Scrocchi, Ferreira, Giraudo, Avila and Motte, 2005 -- valid
  Hydrops martii (Wagler, 1824) -- valid -- Amazon Water Snake
  Hydrops triangularis (Wagler, 1824) -- valid -- Triangle Water Snake
  Hydrosaurinae -- valid
  Hydrosaurus Kaup, 1828 -- valid
  Hydrosaurus amboinensis (Schlosser, 1768) -- valid -- Sailfin Lizard
  Hydrosaurus pustulatus (Eschscholtz, 1829) -- valid -- Philippine Sailfin Lizard
  Hydrosaurus weberi Barbour, 1911 -- valid -- Weber's Sailfin Lizard
  Hydrus caerulescens Shaw, 1802 -- invalid
  Hydrus colubrinus Schneider, 1799 -- invalid
  Hydrus curtus Shaw, 1802 -- invalid
  Hydrus fasciatus Schneider, 1799 -- invalid
  Hydrus gracilis Shaw, 1802 -- invalid
  Hydrus major Shaw, 1802 -- invalid
  Hydrus piscator Schneider, 1799 -- invalid
  Hydrus spiralis Shaw, 1802 -- invalid
  Hydrus stokesii Gray, 1846 -- invalid
  Hypnale hypnale (Merrem, 1820) -- valid -- Hump-nosed Moccasin
  Hypnale nepa (Laurenti, 1768) -- valid -- Sri Lanka Humpnose Viper
  Hypnale zara (Gray, 1849) -- valid
  Hypoptophis wilsonii Boulenger, 1908 -- valid -- African Bighead Snake, Wedge-Snouted Burrowing Snake
  Hypsicalotes Manthey and Denzer, 2000 -- valid
  Hypsicalotes kinabaluensis (De Grijs, 1937) -- valid
  Hypsiglena affinis Boulenger, 1894 -- valid -- Rio Grande de Santiago Nightsnake
  Hypsiglena catalinae Tanner, 1966 -- valid -- Isla Santa Catalina Nightsnake
  Hypsiglena chlorophaea Cope, 1860 -- valid -- Sonoran Nightsnake, Desert Nightsnake
  Hypsiglena chlorophaea catalinae Tanner, 1966 -- invalid -- Isla Santa Catalina Nightsnake
  Hypsiglena chlorophaea chlorophaea Cope, 1860 -- valid -- Sonoran Nightsnake
  Hypsiglena chlorophaea deserticola Tanner, 1946 -- valid -- Northern Desert Nightsnake, Great Basin Nightsnake
  Hypsiglena chlorophaea loreala Tanner, 1946 -- valid -- Mesa Verde Nightsnake, Mesa Verde Night Snake
  Hypsiglena chlorophaea tiburonensis Tanner, 1981 -- valid -- Isla Tiburon Nightsnake
  Hypsiglena dunklei Taylor, 1939 -- invalid
  Hypsiglena jani (Dugès, 1865) -- valid -- San Luis Potosi Nightsnake, Chihuahuan Nightsnake
  Hypsiglena jani dunklei Taylor, 1939 -- valid -- Tamaulipas Nightsnake
  Hypsiglena jani jani (Dugès, 1865) -- valid -- San Luis Potosi Nightsnake
  Hypsiglena jani texana Stejneger, 1893 -- valid -- Texas Night Snake, Texas Nightsnake
  Hypsiglena latifasciata Günther, 1894 -- invalid
  Hypsiglena ochrorhyncha Cope, 1860 -- invalid -- Coast Nightsnake
  Hypsiglena ochrorhyncha unaocularis Tanner, 1946 -- invalid -- Islas Revillagigedo Nightsnake
  Hypsiglena ochrorhynchus baueri Zweifel, 1958 -- valid -- Isla Cedros Nightsnake
  Hypsiglena ochrorhynchus gularis Tanner, 1954 -- valid -- Isla Partida Norte Nightsnake
  Hypsiglena ochrorhynchus klauberi Tanner, 1946 -- valid -- San Diego Nightsnake
  Hypsiglena ochrorhynchus martinensis Tanner and Banta, 1962 -- valid -- Isla San Martin Nightsnake
  Hypsiglena ochrorhynchus nuchalata Tanner, 1943 -- valid -- California Nightsnake, California Night Snake
  Hypsiglena ochrorhynchus ochrorhynchus Cope, 1860 -- valid -- Cape Nightsnake, Spotted Night Snake
  Hypsiglena ochrorhynchus tortugaensis Tanner, 1946 -- valid -- Isla Tortuga Nightsnake
  Hypsiglena ochrorhynchus venusta Mocquard, 1899 -- valid -- Magdalena Nightsnake
  Hypsiglena slevini Tanner, 1943 -- valid -- Baja California Nightsnake, Culebra-nocturna de Baja California, Baja California Night Snake
  Hypsiglena slevini marcosensis Ottley and Tanner, 1978 -- valid
  Hypsiglena slevini slevini Tanner, 1943 -- valid
  Hypsiglena tanzeri Dixon and Lieb, 1972 -- valid -- Rio Verde Nightsnake, Tanzer's Night Snake
  Hypsiglena torquata (Günther, 1860) -- valid -- Night Snake, Nightsnake, Culebra-nocturna ojo de gato, Sinaloan Nightsnake
  Hypsiglena torquata affinis Boulenger, 1894 -- invalid
  Hypsiglena torquata gularis Tanner, 1954 -- invalid
  Hypsiglena torquata martinensis Tanner and Banta, 1962 -- invalid
  Hypsiglena torquata tiburonensis Tanner, 1981 -- invalid
  Hypsiglena torquata torquata (Günther, 1860) -- invalid
  Hypsiglena torquata tortugaensis Tanner, 1946 -- invalid
  Hypsiglena torquata venusta Mocquard, 1899 -- invalid
  Hypsiglena unaocularus Tanner, 1946 -- valid -- Islas Revillagigedo Nightsnake
  Hypsilurus W. C. H. Peters, 1867 -- valid -- Angle-headed Forest Dragons, Angle-headed Forest Dragon
  Hypsilurus auritus (Meyer, 1874) -- valid
  Hypsilurus binotatus (Meyer, 1874) -- valid -- Two-marked ForestDragon
  Hypsilurus boydii (MacLeay, 1884) -- invalid
  Hypsilurus bruijnii (W. C. H. Peters and Doria, 1878) -- valid -- Bruijni ForestDragon
  Hypsilurus capreolatus Kraus and Myers, 2012 -- valid
  Hypsilurus dilophus (A. M. C. Duméril and Bibron, 1837) -- invalid
  Hypsilurus geelvinkianus (W. C. H. Peters and Doria, 1878) -- valid -- New Guinea Forest Dragon
  Hypsilurus godeffroyi (W. C. H. Peters, 1867) -- valid -- Northern Forest Dragon
  Hypsilurus hikidanus Manthey and Denzer, 2006 -- valid
  Hypsilurus longi (MacLeay, 1877) -- valid
  Hypsilurus macrolepis W. C. H. Peters, 1873 -- valid
  Hypsilurus magnus Manthey and Denzer, 2006 -- valid
  Hypsilurus modestus (Meyer, 1874) -- valid -- Modest Forest Dragon
  Hypsilurus nigrigularis (Meyer, 1874) -- valid
  Hypsilurus ornatus Manthey and Denzer, 2006 -- valid
  Hypsilurus papuensis (MacLeay, 1877) -- valid -- Papua Forest Dragon
  Hypsilurus papuensis longicauda Manthey and Denzer, 2006 -- valid
  Hypsilurus papuensis papuensis (MacLeay, 1877) -- valid
  Hypsilurus schoedei (Vogt, 1932) -- valid -- Vogt's Forest Dragon
  Hypsilurus schultzewestrumi (Urban, 1999) -- valid
  Hypsilurus spinipes (A. M. C. Duméril and Bibron, 1851) -- invalid
  Hypsilurus tenuicephalus Manthey and Denzer, 2006 -- valid
  Hypsirhynchus ater (Gosse, 1851) -- valid -- Jamaica Racer
  Hypsirhynchus callilaemus (Gosse, 1851) -- valid -- Jamaican Red Groundsnake
  Hypsirhynchus ferox Günther, 1858 -- valid -- Hispaniola Cat-eyed Snake
  Hypsirhynchus ferox exedrus Schwartz, 1971 -- valid
  Hypsirhynchus ferox ferox Günther, 1858 -- valid
  Hypsirhynchus ferox paracrousis Schwartz, 1971 -- valid
  Hypsirhynchus funereus (Cope, 1862) -- valid -- Jamaican Black Groundsnake
  Hypsirhynchus melanichnus (Cope, 1862) -- valid -- La Vega Racer
  Hypsirhynchus parvifrons (Cope, 1862) -- valid -- Cope's Antilles Snake, Hispaniolan Black Racer
  Hypsirhynchus parvifrons alleni (Dunn, 1920) -- valid
  Hypsirhynchus parvifrons lincolni (Cochran, 1941) -- valid
  Hypsirhynchus parvifrons niger (Dunn, 1920) -- valid
  Hypsirhynchus parvifrons paraniger (Thomas And Schwartz, 1965) -- valid
  Hypsirhynchus parvifrons parvifrons (Cope, 1862) -- valid
  Hypsirhynchus parvifrons protenus (Jan, 1867) -- valid
  Hypsirhynchus parvifrons rosamondae (Cochran, 1934) -- valid
  Hypsirhynchus parvifrons stygius (Thomas And Schwartz, 1965) -- valid
  Hypsirhynchus parvifrons tortuganus (Dunn, 1920) -- valid
  Hypsirhynchus polylepis (Buden, 1966) -- valid -- Jamaican Long-tailed Groundsnake
  Hypsirhynchus scalaris Cope, 1863 -- valid -- Tiburon Hognosed Racer
  Ialtris agyrtes Schwartz and Rossman, 1976 -- valid -- Barreras Fanged Snake
  Ialtris dorsalis (Günther, 1858) -- valid -- Brown Fanged Snake
  Ialtris haetianus (Cochran, 1935) -- valid -- Haitian Ground Snake
  Ialtris haetianus haetianus (Cochran, 1935) -- valid
  Ialtris haetianus perfector (Schwartz and Thomas, 1965) -- valid
  Ialtris haetianus vaticinata (Schwartz, 1970) -- valid
  Ialtris parishi Cochran, 1932 -- valid -- Parish's Fanged Snake
  Idiophis vaillanti Mocquard, 1901 -- invalid
  Idiopholis collaris Mocquard, 1892 -- invalid
  Iguana delicatissima Laurenti, 1768 -- valid -- Lesser Antillean Iguana, West Indian Iguana
  Iguana iguana (Linnaeus, 1758) -- valid -- Green Iguana, Iguana verde, iguane commun, Common Green Iguana
  Iguanognathus Boulenger, 1898 -- valid
  Iguanognathus werneri Boulenger, 1898 -- valid -- Spatula-tooth Snake
  Imantodes cenchoa (Linnaeus, 1758) -- valid -- Blunthead Treesnake, Fiddle-string Snake, Blunt-headed Treesnake, Culebra-cordelilla chata, Blunthead Tree Snake
  Imantodes cenchoa cenchoa (Linnaeus, 1758) -- invalid -- Fiddle-string Snake
  Imantodes cenchoa leucomelas (Cope, 1861) -- invalid
  Imantodes cenchoa semifasciatus (Cope, 1894) -- invalid
  Imantodes chocoensis Torres-Carvajal, Yánez-Muñoz, Quirola, E. N. Smith and Almendáriz, 2012 -- valid -- Chocoan Blunt-headed Vine Snake
  Imantodes gemmistratus (Cope, 1861) -- valid -- Culebra-cordelilla centroamericana, Central American Tree Snake
  Imantodes gemmistratus gemmistratus (Cope, 1861) -- valid
  Imantodes gemmistratus gracillimus (Günther, 1895) -- valid
  Imantodes gemmistratus latistratus (Cope, 1887) -- valid
  Imantodes gemmistratus luciodorsus Oliver, 1942 -- valid
  Imantodes gemmistratus oliveri H. M. Smith, 1942 -- valid
  Imantodes gemmistratus splendidus (Günther, 1895) -- valid
  Imantodes guane Missassi and Prudente, 2015 -- valid
  Imantodes inornatus (Boulenger, 1896) -- valid -- Western Tree Snake
  Imantodes lentiferus (Cope, 1894) -- valid -- Amazon Basin Tree Snake
  Imantodes luciodorsus Oliver, 1942 -- invalid
  Imantodes phantasma Myers, 1982 -- valid -- Phantasma Tree Snake
  Imantodes splendidus oliveri H. M. Smith, 1942 -- invalid
  Imantodes tenuissimus (Cope, 1867) -- valid -- Culebra-cordelilla yucateca, Yucatán Blunthead Snake
  Intellagama Wells and Wellington, 1985 -- valid
  Intellagama lesueurii (Gray, 1831) -- valid -- Eastern Water Dragon
  Intellagama lesueurii howittii (McCoy, 1884) -- valid -- Gippsland Water Dragon
  Intellagama lesueurii lesueurii (Gray, 1831) -- valid -- Eastern Water Dragon
  Inyoka swazicus (Schaefer, 1970) -- valid -- Swazi Rock Snake, Swaziland House Snake
  Isanophis David, Pauwels, T. Q. Nguyen and Vogel, 2015 -- valid
  Isanophis boonsongi (Taylor and Elbel, 1958) -- valid -- Boomsong's Stream Snake
  Isoscelis maculata Günther, 1858 -- invalid
  Ithycyphus blanci Domergue, 1988 -- valid
  Ithycyphus goudoti (Schlegel, 1837) -- valid -- Forest Night Snake
  Ithycyphus miniatus (Schlegel, 1837) -- valid -- Cinnabar Malagasy Vinesnake, Cinnabar Malagasy Night Snake
  Ithycyphus oursi Domergue, 1986 -- valid
  Ithycyphus perineti Domergue, 1986 -- valid
  Japalura Gray, 1853 -- valid
  Japalura andersoniana Annandale, 1905 -- valid -- Anderson's Mountain Lizard
  Japalura batangensis Li, Deng, Wu and Wand, 2001 -- valid
  Japalura brevicauda Manthey, Denzer, Hou and Wang, 2012 -- valid
  Japalura brevipes Gressitt, 1936 -- valid -- Short-legged Japalure
  Japalura chapaensis Bourret, 1937 -- valid -- Japalure
  Japalura dasi (Shah and Kästle, 2002) -- valid -- Agaupani Mountain Lizard
  Japalura dymondi (Boulenger, 1906) -- valid -- Dymond's Japalure
  Japalura fasciata Mertens, 1926 -- valid -- Banded Japalure
  Japalura flaviceps Barbour and Dunn, 1919 -- valid -- Szechwan Japalure
  Japalura grahami (Stejneger, 1924) -- valid -- Graham's Japalure
  Japalura hamptoni M. A. Smith, 1935 -- valid -- Hampton's Japalure
  Japalura iadina Wang, Jiang, Siler and Che in Wang, Jiang, Zou, Yan, Siler and Che, 2016 -- valid -- Emerald Mountain Dragon
  Japalura kumaonensis (Annandale, 1907) -- valid -- Kumaon Mountain Lizard
  Japalura laeviventris Wang, Jiang, Siler and Che in Wang, Jiang, Zou, Yan, Siler and Che, 2016 -- valid -- Smooth-venter Mountain Dragon
  Japalura luei Ota, Chen and Shang, 1998 -- valid
  Japalura major (Jerdon, 1870) -- valid -- Large Mountain Lizard, Greater Forest Agama
  Japalura makii Ota, 1989 -- valid -- Ota's Japalure
  Japalura micangshanensis Song, 1987 -- valid
  Japalura ngoclinensis Ananjeva, Orlov and Nguyen, 2017 -- valid
  Japalura otai Mahony, 2009 -- valid -- Ota's Mountain Lizard
  Japalura planidorsata Jerdon, 1870 -- valid -- Smooth-scaled Mountain Lizard
  Japalura polygonata (Hallowell, 1861) -- valid -- Ryukyu Japalure, Okinawa Tree Lizard
  Japalura polygonata donan Ota, 2003 -- valid
  Japalura polygonata ishigakiensis Van Denburgh, 1912 -- valid
  Japalura polygonata miyakensis Van Denburgh, 1912 -- valid
  Japalura polygonata polygonata (Hallowell, 1861) -- valid
  Japalura polygonata xanthostoma Ota, 1991 -- valid
  Japalura sagittifera M. A. Smitth, 1940 -- valid -- Burmese Japalure
  Japalura splendida Barbour and Dunn, 1919 -- valid -- Splendid Japalure
  Japalura swinhonis Günther, 1864 -- valid -- Taiwan Japalure
  Japalura tricarinata (Blyth, 1853) -- valid -- Three Keeled Mountain Lizard
  Japalura varcoae (Boulenger, 1918) -- valid -- Chinese Japalure
  Japalura variegata Gray, 1853 -- valid -- Variegated Mountain Lizard
  Japalura vela Wang, Jiang, Pan, Siler and Che, 2015 -- valid -- Sail Moutain Lizards
  Japalura yulongensis Manthey, Denzer, Hou and Wang, 2012 -- valid
  Japalura yunnanensis Anderson, 1878 -- valid -- Yunnan Japalure
  Japalura zhaoermii Goa and Hou, 2002 -- valid
  Katophis plumbea Macleay, 1877 -- invalid
  Kinyongia adolfifriderici (Sternfeld, 1912) -- valid -- Ituri Chameleon
  Kinyongia asheorum Necas, Sindaco, Korený, Kopecná, Malonza and Modrý, 2009 -- valid -- Mount-Nyiro Bearded Chameleon
  Kinyongia boehmei (Lutzmann and Necas, 2002) -- valid -- Böhme's Two-horned Chamaeleon
  Kinyongia carpenteri (Parker, 1929) -- valid -- Carpenter's Chameleon
  Kinyongia excubitor (Barbour, 1911) -- valid -- Mt Kenya Hornless Chameleon
  Kinyongia fischeri (Reichenow, 1887) -- valid
  Kinyongia gyrolepis Greenbaum, Tolley, Joma and Kusamba, 2012 -- valid -- Circular-scaled Chameleon
  Kinyongia magomberae Menegon, Tolley, Jones, Rovero, Marshall and Tilbury, 2009 -- valid -- Magombera Chameleon
  Kinyongia matschiei (Werner, 1895) -- valid -- Matschie's Two-horned Chamaeleon
  Kinyongia msuyae Menegon, Loader, Davenport, Howell, Tilbury, Machaga and Tolley, 2015 -- valid
  Kinyongia multituberculata (Nieden, 1913) -- valid -- West Usambara Two-horned Chamaeleon
  Kinyongia mulyai Tilbury and Tolley, 2015 -- valid
  Kinyongia oxyrhina (Klaver and Böhme, 1988) -- valid -- Rednose Dwarf Chameleon
  Kinyongia tavetana (Steindachner, 1891) -- valid -- Kilimanjaro Two-horned Chamaeleon
  Kinyongia tenuis (Matschie, 1892) -- valid -- Matschie's Dwarf Chameleon, Usambara Soft-horned Chameleon
  Kinyongia uluguruensis (Loveridge, 1957) -- valid -- Uluguru Two-horned Chamaeleon
  Kinyongia uthmoelleri (L. Müller, 1938) -- valid -- Uthmöller's Chameleon
  Kinyongia uthmoelleri artytor Lutzmann et al., 2010 -- valid
  Kinyongia uthmoelleri uthmoelleri (L. Müller, 1938) -- valid
  Kinyongia vanheygeni Necas, 2009 -- valid
  Kinyongia vosseleri (Nieden, 1913) -- valid
  Kinyongia xenorhina (Boulenger, 1901) -- valid -- Strange-horned Chameleon
  Kolpophis annandalei (Laidlaw, 1901) -- valid -- Bighead Sea Snake
  Lachesis acrochorda (Garcia, 1896) -- valid
  Lachesis barbouri Dunn, 1919 -- invalid
  Lachesis bilineatus oligolepis Werner, 1901 -- invalid
  Lachesis chloromelas Boulenger, 1912 -- invalid
  Lachesis cotiara Gomes, 1913 -- invalid
  Lachesis fasciatus Boulenger, 1896 -- invalid
  Lachesis insularis Amaral, 1921 -- invalid
  Lachesis itapetiningae Boulenger, 1907 -- invalid
  Lachesis lutzi Miranda-Ribeiro, 1915 -- invalid
  Lachesis medusa Sternfeld, 1920 -- invalid
  Lachesis melanocephala Solórzano and Cerdas, 1986 -- valid -- Black-headed Bushmaster
  Lachesis muta (Linnaeus, 1766) -- valid -- Bushmaster, South American Bushmaster
  Lachesis picta Tschudi, 1845 -- invalid
  Lachesis punctatus Garcia, 1896 -- invalid
  Lachesis stenophrys Cope, 1876 -- valid -- Central American Bushmaster
  Laemanctus longipes Wiegmann, 1834 -- valid -- Lemacto coludo, Eastern Casquehead Iguana
  Laemanctus longipes deborrei Boulenger, 1877 -- valid
  Laemanctus longipes longipes Wiegmann, 1834 -- valid
  Laemanctus longipes waltersi Schmidt, 1933 -- valid
  Laemanctus serratus Cope, 1864 -- valid -- Lemacto coronado, Serrated Casquehead Iguana
  Laemanctus serratus alticoronatus Cope, 1866 -- valid
  Laemanctus serratus mccoyi Perez-Higareda and Vogt, 1985 -- valid
  Laemanctus serratus serratus Cope, 1864 -- valid
  Lampropeltis abnorma (Bocourt, 1886) -- valid
  Lampropeltis alterna (Brown, 1901) -- valid -- Gray-banded Kingsnake, Culebra-real bandas grises, Grey-banded Kingsnake
  Lampropeltis annulata Kennicott, 1861 -- valid -- Mexican Milk Snake, Mexican Milksnake
  Lampropeltis californiae (Blainville, 1835) -- valid -- California Kingsnake
  Lampropeltis calligaster (Harlan, 1827) -- valid -- Prairie Kingsnake, Yellow-bellied Kingsnake
  Lampropeltis calligaster calligaster (Harlan, 1827) -- valid -- Prairie Kingsnake
  Lampropeltis calligaster occipitolineata Price, 1987 -- valid -- South Florida Mole Snake, South Florida Mole Kingsnake
  Lampropeltis calligaster rhombomaculata (Holbrook, 1840) -- valid -- Mole Kingsnake, Northern Mole Kingsnake
  Lampropeltis elapsoides (Holbrook, 1838) -- valid -- Scarlet Milksnake, Scarlet Kingsnake
  Lampropeltis extenuata (Brown, 1890) -- valid -- Short-tailed Snake, Short-tailed Kingsnake
  Lampropeltis gentilis (Baird and Girard, 1853) -- valid -- Central Plains Milksnake, Western Milksnake, Central Plains Milk Snake
  Lampropeltis getula (Linnaeus, 1766) -- valid -- Common Kingsnake, Culebra-real común, Eastern Kingsnake
  Lampropeltis holbrooki Stejneger, 1902 -- valid -- Speckled Kingsnake
  Lampropeltis knoblochi Taylor, 1940 -- valid -- Chihuahuan Mountain Kingsnake, Knobloch's Mountain Kingsnake, Madrean Mountain Kingsnake
  Lampropeltis mexicana (Garman, 1884) -- valid -- Gray-banded Kingsnake, Culebra-real potosina, Mexican Kingsnake
  Lampropeltis mexicana mexicana (Garman, 1884) -- valid
  Lampropeltis mexicana thayeri Loveridge, 1924 -- valid
  Lampropeltis micropholis Cope, 1860 -- valid -- Ecuadorian Milksnake
  Lampropeltis nigra (Yarrow, 1882) -- valid -- Black Kingsnake, Eastern Black Kingsnake
  Lampropeltis polyzona Cope, 1860 -- valid -- Atlantic Central American Milksnake
  Lampropeltis pyromelana (Cope, 1867) -- valid -- Sonoran Mountain Kingsnake, Culebra-real sonorense, Arizona Mountain Kingsnake
  Lampropeltis pyromelana infralabialis Tanner, 1953 -- valid -- Utah Mountain Kingsnake
  Lampropeltis pyromelana knoblochi Taylor, 1940 -- invalid
  Lampropeltis pyromelana pyromelana (Cope, 1867) -- valid -- Arizona Mountain Kingsnake, Huachuca Mountain Kingsnake
  Lampropeltis ruthveni Blanchard, 1920 -- valid -- Culebra-real de Ruthven, Ruthvens Kingsnake
  Lampropeltis splendida (Baird and Girard, 1853) -- valid -- Desert Kingsnake
  Lampropeltis thayeri Loveridge, 1924 -- invalid
  Lampropeltis triangulum (Lacépède, 1789) -- valid -- Eastern Milk Snake, Eastern Milksnake, Culebra-real coralillo, couleuvre tachetée
  Lampropeltis triangulum amaura Cope, 1861 -- invalid -- Louisiana Milk Snake
  Lampropeltis triangulum andesiana Williams, 1978 -- invalid
  Lampropeltis triangulum annulata Kennicott, 1861 -- invalid -- Mexican Milk Snake
  Lampropeltis triangulum arcifera (Werner, 1903) -- invalid
  Lampropeltis triangulum blanchardi Stuart, 1935 -- invalid
  Lampropeltis triangulum campbelli Quinn, 1983 -- invalid
  Lampropeltis triangulum celaenops Stejneger, 1903 -- invalid -- New Mexico Milk Snake
  Lampropeltis triangulum conanti Williams, 1978 -- invalid
  Lampropeltis triangulum dixoni Quinn, 1983 -- invalid
  Lampropeltis triangulum gaigae Dunn, 1937 -- invalid
  Lampropeltis triangulum gentilis (Baird and Girard, 1853) -- invalid -- Central Plains Milk Snake
  Lampropeltis triangulum hondurensis Williams, 1978 -- invalid
  Lampropeltis triangulum micropholis Cope, 1860 -- invalid
  Lampropeltis triangulum nelsoni Blanchard, 1920 -- invalid
  Lampropeltis triangulum oligozona (Bocourt, 1886) -- invalid
  Lampropeltis triangulum sinaloae Williams, 1978 -- invalid
  Lampropeltis triangulum smithi Williams, 1978 -- invalid
  Lampropeltis triangulum stuarti Williams, 1978 -- invalid
  Lampropeltis triangulum syspila (Cope, 1889) -- invalid -- Red Milk Snake
  Lampropeltis triangulum taylori Tanner and Loomis, 1957 -- invalid -- Utah Milk Snake
  Lampropeltis triangulum triangulum (Lacépède, 1789) -- invalid -- Eastern Milk Snake
  Lampropeltis webbi Bryson, Dixon and Lazcano, 2005 -- valid
  Lampropeltis zonata (Lockington ex Blainville, 1876) -- valid -- California Mountain Kingsnake, Culebra-real californiana, St. Helena Mountain Kingsnake
  Lamprophis abyssinicus Mocquard, 1906 -- valid -- Abyssinian House Snake, Ethiopian House Snake
  Lamprophis aurora (Linnaeus, 1758) -- valid -- Aurora House Snake
  Lamprophis capensis (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- invalid
  Lamprophis erlangeri (Sternfeld, 1908) -- valid
  Lamprophis fiskii Boulenger, 1887 -- valid -- Fisk's House Snake
  Lamprophis fuscus Boulenger, 1893 -- valid -- Yellow-bellied House Snake
  Lamprophis geometricus (Schlegel, 1837) -- valid -- Seychelles House Snake
  Lamprophis guttatus (A. Smith, 1843) -- valid -- Spotted House Snake
  Lamprophis inornatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Lamprophis modestus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Lamprophis swazicus Schaefer, 1970 -- invalid
  Langaha alluaudi Mocquard, 1901 -- valid -- Southern Leafnose Snake
  Langaha madagascariensis Bonaterre, 1790 -- valid
  Langaha pseudoalluaudi Domergue, 1988 -- valid
  Lapemis hardwickii Gray, 1835 -- invalid
  Laticauda colubrina (Schneider, 1799) -- valid -- Banded Sea Krait, Banded Seakrait, Colubrine Sea Krait, Yellow-lipped Sea Krait
  Laticauda crockeri Slevin, 1934 -- valid -- Crocker's Sea Snake
  Laticauda frontalis (De Vis, 1905) -- valid
  Laticauda guineai Heastwole, Busack and Cogger, 2005 -- valid
  Laticauda laticaudata (Linnaeus, 1758) -- valid -- Blue-banded Sea Krait, Blue-lipped Sea Krait, Common Sea Krait
  Laticauda laticaudata affinis (Anderson, 1871) -- valid
  Laticauda laticaudata laticaudata (Linnaeus, 1758) -- valid
  Laticauda saintgironsi Cogger and Heatwole, 2005 -- valid
  Laticauda schistorhyncha (Günther, 1874) -- valid
  Laticauda schistorhynchus (Günther, 1874) -- invalid -- Flat-tail Sea Snake
  Laticauda semifasciata (Reinwardt in Schlegel, 1837) -- valid -- Chinese Sea Snake
  Laticaudinae Cope, 1876 -- valid
  Laudakia Gray, 1845 -- valid
  Laudakia agrorensis (Stoliczka, 1872) -- valid -- Agror Agama
  Laudakia dayana (Stoliczka, 1871) -- valid -- Haridwar Agama
  Laudakia melanura Blyth, 1854 -- valid -- Black Agama
  Laudakia melanura lirata (Blanford, 1874) -- valid
  Laudakia melanura melanura Blyth, 1854 -- valid
  Laudakia melanura nasiri Baig, 1999 -- valid
  Laudakia nupta (De Filippi, 1843) -- valid -- Large-scaled Rock Agama
  Laudakia nupta fusca (Blanford, 1876) -- valid -- Yellow-headed Rock Agama
  Laudakia nupta nupta (De Filippi, 1843) -- valid -- Large-scaled Rock Agama
  Laudakia nuristanica (Anderson and Leviton, 1969) -- valid -- Leviton's Rock Agama
  Laudakia pakistanica (Baig, 1989) -- valid -- Pakistani Agama
  Laudakia pakistanica auffenbergi Baig and Böhme, 1996 -- valid
  Laudakia pakistanica khani Baig and Böhme, 1996 -- valid
  Laudakia pakistanica pakistanica (Baig, 1989) -- valid
  Laudakia papenfussi E. Zhao, 1998 -- valid -- Papenfuss' Rock Agama
  Laudakia sacra (M. A. Smith, 1935) -- valid -- Anan's Rock Agama
  Laudakia tuberculata (Gray, 1827) -- valid -- Tuberculated Agama, Kashmir Rock Agama
  Laudakia wui E. Zhao, 1998 -- valid -- Wui's Rock Agama
  Leimadophis alleni Dunn, 1920 -- invalid
  Leimadophis parvifrons lincolni Cochran, 1941 -- invalid
  Leimadophis parvifrons niger Dunn, 1920 -- invalid
  Leimadophis reginae macrosoma Amaral, 1936 -- invalid
  Leimadophis stahli Stejneger, 1904 -- invalid
  Leimadophis taeniurus Tschudi, 1845 -- invalid
  Leimadophis taeniurus juvenalis Dunn, 1937 -- invalid
  Leimadophis tortuganus Dunn, 1920 -- invalid
  Leimadophis zweifeli Roze, 1959 -- invalid
  Leiocephalidae -- valid
  Leiocephalus anonymous Pregill, 1984 -- valid
  Leiocephalus apertosulcus Etheridge, 1965 -- valid
  Leiocephalus barahonensis K. P. Schmidt, 1921 -- valid -- Barahona Curlytail Lizard, Orange-bellied Curlytail
  Leiocephalus barahonensis altavelensis Noble and Hassler, 1933 -- valid
  Leiocephalus barahonensis aureus Cochran, 1934 -- valid
  Leiocephalus barahonensis barahonensis K. P. Schmidt, 1921 -- valid
  Leiocephalus barahonensis beatanus Noble, 1923 -- valid
  Leiocephalus barahonensis oxygaster Schwartz, 1967 -- valid
  Leiocephalus carinatus Gray, 1827 -- valid -- Carinate Curly-tailed Lizard, Northern Curly-tailed Lizard
  Leiocephalus carinatus aquarius Schwartz and Ogren, 1956 -- valid
  Leiocephalus carinatus armouri Barbour and Shreve, 1935 -- valid -- Little Bahama Curly-tailed Lizard
  Leiocephalus carinatus carinatus Gray, 1827 -- valid
  Leiocephalus carinatus cayensis Schwartz, 1959 -- valid
  Leiocephalus carinatus coryi K. P. Schmidt, 1936 -- valid
  Leiocephalus carinatus granti Rabb, 1957 -- valid
  Leiocephalus carinatus hodsoni K. P. Schmidt, 1936 -- valid
  Leiocephalus carinatus labrossytus Schwartz, 1959 -- valid
  Leiocephalus carinatus microcyon Schwartz, 1959 -- valid
  Leiocephalus carinatus mogotensis Schwartz, 1959 -- valid
  Leiocephalus carinatus varius Garman, 1887 -- invalid
  Leiocephalus carinatus virescens Stejneger, 1901 -- valid
  Leiocephalus carinatus zayasi Schwartz, 1959 -- valid
  Leiocephalus cubensis (Gray, 1840) -- valid -- Cuban Curlytail Lizard
  Leiocephalus cubensis cubensis (Gray, 1840) -- valid
  Leiocephalus cubensis gigas Schwartz, 1959 -- valid
  Leiocephalus cubensis minor Varona and Garrido, 1970 -- valid
  Leiocephalus cubensis pambasileus Schwartz, 1959 -- valid
  Leiocephalus cubensis paraphrus Schwartz, 1959 -- valid
  Leiocephalus cuneus Etheridge, 1964 -- valid
  Leiocephalus endomychus Schwartz, 1967 -- valid -- Central Haitian Curlytail
  Leiocephalus eremitus (Cope, 1868) -- valid -- Navassa Curly-tailed Lizard, Navassa Curlytail Lizard
  Leiocephalus etheridgei Pregill, 1981 -- valid
  Leiocephalus greenwayi Barbour and Shreve, 1935 -- valid -- Plana Cay Curlytail Lizard
  Leiocephalus herminieri (A. M. C. Duméril and Bibron, 1837) -- valid -- Martinique Curlytail Lizard
  Leiocephalus inaguae Cochran, 1934 -- valid -- Inagua Curlytail Lizard
  Leiocephalus jamaicensis Etheridge, 1966 -- valid
  Leiocephalus loxogrammus (Cope, 1887) -- valid -- Rum Cay Curlytail Lizard
  Leiocephalus loxogrammus loxogrammus (Cope, 1887) -- valid
  Leiocephalus loxogrammus parnelli Barbour and Shreve, 1934 -- valid
  Leiocephalus lunatus Cochran, 1934 -- valid -- Santo Domingo Curlytail Lizard
  Leiocephalus lunatus arenicolor Mertens, 1939 -- valid
  Leiocephalus lunatus lewisi Schwartz, 1967 -- valid
  Leiocephalus lunatus louisae Cochran, 1934 -- valid
  Leiocephalus lunatus lunatus Cochran, 1934 -- valid
  Leiocephalus lunatus melaenoscelis Schwartz, 1967 -- valid
  Leiocephalus lunatus thomasi Schwartz, 1967 -- valid
  Leiocephalus macropus (Cope, 1863) -- valid -- Monte Verde Curlytail Lizard
  Leiocephalus macropus aegialus Schwartz and Garrido, 1967 -- valid
  Leiocephalus macropus asbolomus Schwartz and Garrido, 1967 -- valid
  Leiocephalus macropus felinoi Garrido, 1979 -- valid
  Leiocephalus macropus hoplites Zug, 1959 -- valid
  Leiocephalus macropus hyacinthurus Zug, 1959 -- valid
  Leiocephalus macropus immaculatus Hardy, 1958 -- valid
  Leiocephalus macropus koopmani Zug, 1959 -- valid
  Leiocephalus macropus lenticulatus Garrido, 1979 -- valid
  Leiocephalus macropus macropus (Cope, 1863) -- valid
  Leiocephalus macropus phylax Schwartz and Garrido, 1967 -- valid
  Leiocephalus macropus torrei Garrido, 1979 -- valid
  Leiocephalus melanochlorus Cope, 1863 -- valid -- Jeremie Curlytail Lizard
  Leiocephalus melanochlorus hysistus Schwartz, 1966 -- valid
  Leiocephalus melanochlorus melanochlorus Cope, 1863 -- valid
  Leiocephalus onaneyi Garrido, 1973 -- valid -- Sierra Curlytail Lizard
  Leiocephalus partidus Pregill, 1981 -- valid
  Leiocephalus personatus Cope, 1862 -- valid -- Green-legged Curly-tailed Lizard, Haitian Curlytail Lizard
  Leiocephalus personatus actites Schwartz, 1967 -- valid
  Leiocephalus personatus agraulus Schwartz, 1967 -- valid
  Leiocephalus personatus budeni Schwartz, 1967 -- valid
  Leiocephalus personatus elattoprosopon Gali, Schwartz and Suarez, 1988 -- valid
  Leiocephalus personatus mentalis Cochran, 1932 -- valid
  Leiocephalus personatus personatus Cope, 1863 -- valid
  Leiocephalus personatus poikilometes Schwartz, 1969 -- valid
  Leiocephalus personatus pyrrholaemus Schwartz, 1971 -- valid
  Leiocephalus personatus scalaris Cochran, 1932 -- valid
  Leiocephalus personatus socoensis Gali and Schwartz, 1982 -- valid
  Leiocephalus personatus tarachodes Schwartz, 1967 -- valid
  Leiocephalus personatus trujilloensis Mertens, 1939 -- valid
  Leiocephalus pratensis (Cochran, 1928) -- valid -- Atalaye Curlytail Lizard
  Leiocephalus pratensis chimarus Schwartz, 1979 -- valid
  Leiocephalus pratensis pratensis (Cochran, 1928) -- valid
  Leiocephalus psammodromus Barbour, 1920 -- valid -- Bastion Cay Curlytail Lizard
  Leiocephalus psammodromus aphretor Schwartz, 1967 -- valid
  Leiocephalus psammodromus apocrinus Schwartz, 1967 -- valid
  Leiocephalus psammodromus cacodoxus Schwartz, 1967 -- valid
  Leiocephalus psammodromus hyphantus Schwartz, 1967 -- valid
  Leiocephalus psammodromus mounax Schwartz, 1967 -- valid
  Leiocephalus psammodromus psammodromus Barbour, 1920 -- valid
  Leiocephalus punctatus Cochran, 1931 -- valid -- Spotted Curlytail Lizard
  Leiocephalus raviceps Cope, 1863 -- valid -- Mountain Curlytail Lizard
  Leiocephalus raviceps delavarai Garrido, 1973 -- valid
  Leiocephalus raviceps jaumei Schwartz and Garrido, 1968 -- valid
  Leiocephalus raviceps kilinikowski Schwartz, 1960 -- valid
  Leiocephalus raviceps raviceps Cope, 1863 -- valid
  Leiocephalus raviceps uzzelli Schwartz, 1960 -- valid
  Leiocephalus rhutidira Schwartz, 1979 -- valid -- Lapierre Curlytail Lizard
  Leiocephalus schreibersii (Gravenhorst, 1838) -- valid -- Schreiber's Curly-tailed Lizard, Red-sided Curly-tailed Lizard
  Leiocephalus schreibersii nesomorus Schwartz, 1968 -- valid
  Leiocephalus schreibersii schreibersii (Gravenhorst, 1838) -- valid
  Leiocephalus semilineatus Dunn, 1920 -- valid -- Thomazeau Curlytail Lizard
  Leiocephalus stictigaster Schwartz, 1959 -- valid -- Cabo Corrientes Curlytail Lizard
  Leiocephalus stictigaster astictus Schwartz, 1959 -- valid
  Leiocephalus stictigaster celeustes Schwartz and Garrido, 1968 -- valid
  Leiocephalus stictigaster exotheotus Schwartz, 1959 -- valid
  Leiocephalus stictigaster gibarensis Schwartz and Garrido, 1968 -- valid
  Leiocephalus stictigaster lipomator Schwartz and Garrido, 1968 -- valid
  Leiocephalus stictigaster lucianus Schwartz, 1960 -- valid
  Leiocephalus stictigaster naranjoi Schwartz and Garrido, 1968 -- valid
  Leiocephalus stictigaster ophiplacodes Schwartz, 1964 -- valid
  Leiocephalus stictigaster parasphex Schwartz, 1964 -- valid
  Leiocephalus stictigaster septentrionalis Garrido, 1975 -- valid
  Leiocephalus stictigaster sierrae Schwartz, 1959 -- valid
  Leiocephalus stictigaster stictigaster Schwartz, 1959 -- valid
  Leiocephalus varius Garman, 1887 -- valid
  Leiocephalus vinculum Cochran, 1928 -- valid -- Cochran's Curlytail Lizard
  Leioheterodon geayi Mocquard, 1905 -- valid
  Leioheterodon madagascariensis (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid
  Leioheterodon modestus (Günther, 1863) -- valid
  Leiolepidinae -- valid
  Leiolepis Cuvier, 1829 -- valid
  Leiolepis belliana (Hardwicke and Gray, 1827) -- valid -- Common Butterfly Lizard
  Leiolepis belliana belliana (Gray, 1872) -- valid
  Leiolepis belliana ocellata G. Peters, 1971 -- valid
  Leiolepis boehmei Deravsky and Kupriyanova, 1993 -- valid -- Böhme's Butterfly Lizard
  Leiolepis guentherpetersi Deravsky and Kupriyanova, 1993 -- valid -- Peters' Butterfly Lizard
  Leiolepis guttata Cuvier, 1829 -- valid -- Spotted Butterfly Lizard
  Leiolepis ngovantrii J. L. Grismer and L. L. Grismer, 2010 -- valid -- Ngo Van Tri's Lady Butterfly Lizard
  Leiolepis peguensis G. Peters, 1971 -- valid -- Burmese Butterfly Lizard
  Leiolepis reevesii (Gray, 1831) -- valid -- Reeves' Butterfly Lizard
  Leiolepis rubritaeniata Mertens, 1961 -- valid -- Reeves' Butterfly Lizard
  Leiolepis triploida G. Peters, 1971 -- valid -- Thai Butterfly Lizard
  Leiosauridae -- valid
  Leiosaurinae -- valid
  Leiosaurus A. M. C. Duméril and Bibron, 1837 -- valid
  Leiosaurus bellii A. M. C. Duméril and Bibron, 1837 -- valid -- Bell's Anole
  Leiosaurus catamarcensis Koslowsky, 1898 -- valid
  Leiosaurus jaguaris Laspiur, Acosta and Abdala, 2007 -- valid
  Leiosaurus paronae (Peracca, 1897) -- valid
  Leioselasma coggeri Kharin, 1984 -- invalid
  Leioselasma czeblukovi Kharin, 1984 -- invalid
  Lepidognathus rugosus Lidth de Jeude, 1890 -- invalid
  Leptgnathus cisticeps Boettger, 1885 -- invalid
  Leptocalamus limitaneus Amaral, 1935 -- invalid
  Leptocalamus sclateri Boulenger, 1894 -- invalid
  Leptocalamus trilineatus Peters, 1880 -- invalid
  Leptodeira annulata (Linnaeus, 1758) -- valid -- Culebra-ojo de gato bandada, Banded Cat-eyed Snake
  Leptodeira annulata annulata (Linnaeus, 1758) -- valid
  Leptodeira annulata ashmeadii (Hallowell, 1845) -- valid
  Leptodeira annulata pulchriceps Duellman, 1958 -- valid
  Leptodeira annulata rhombifera Günther, 1872 -- invalid
  Leptodeira bakeri Ruthven, 1936 -- valid -- Baker's Cat-eyed Snake
  Leptodeira bressoni Taylor, 1938 -- invalid
  Leptodeira discolor Günther, 1860 -- invalid
  Leptodeira ephippiata H. M. Smith and Tanner, 1944 -- invalid
  Leptodeira frenata (Cope, 1886) -- valid -- Culebra-ojo de gato de selva, Rainforest Cat-eyed Snake
  Leptodeira frenata frenata (Cope, 1886) -- valid
  Leptodeira frenata malleisi Dunn and Stuart, 1935 -- valid
  Leptodeira frenata yucatanensis (Cope, 1887) -- valid
  Leptodeira maculata (Hallowell, 1861) -- valid -- Culebra-ojo de gato del suroeste, Southwestern Cat-eyed Snake
  Leptodeira nigrofasciata Günther, 1868 -- valid -- Culebra-ojo de gato cabeza negra, Black-banded Cat-eyed Snake
  Leptodeira polysticta Günther, 1885 -- valid
  Leptodeira punctata (Peters, 1866) -- valid -- Culebra-ojo de gato occidental, Western Cat-eyed Snake
  Leptodeira rhombifera Günther, 1872 -- valid
  Leptodeira rubricata (Cope, 1893) -- valid
  Leptodeira septentrionalis (Kennicott in Baird, 1859) -- valid -- Cat-eyed Snake, Culebra-ojo de gato norteña o manchada, Northern Cat-eyed Snake
  Leptodeira splendida Günther, 1895 -- valid -- Culebra-ojo de gato espléndida, Splendid Cat-eyed Snake
  Leptodeira splendida bressoni Taylor, 1938 -- valid
  Leptodeira splendida ephippiata H. M. Smith and Tanner, 1944 -- valid
  Leptodeira splendida splendida Günther, 1895 -- valid
  Leptodeira uribei (Bautista and H. M. Smith, 1992) -- valid -- Uribe's False Cat-eyed Snake
  Leptodeira yucatanensis malleisi Dunn and Stuart, 1935 -- invalid
  Leptodira degeni Boulenger, 1906 -- invalid
  Leptodira duchesnii Boulenger, 1901 -- invalid
  Leptodira leucocephalus Günther, 1863 -- invalid
  Leptodira tornieri Werner, 1908 -- invalid
  Leptodira tripolitana Werner, 1909 -- invalid
  Leptodira werneri Boulenger, 1897 -- invalid
  Leptodrymus pulcherrimus (Cope, 1874) -- valid -- Striped Lowland Snake
  Leptognathus alternans Fischer, 1885 -- invalid
  Leptognathus andiana Boulenger, 1896 -- invalid
  Leptognathus annulata Günther, 1872 -- invalid
  Leptognathus anthracops Cope, 1868 -- invalid
  Leptognathus argus Cope, 1876 -- invalid
  Leptognathus articulata Cope, 1868 -- invalid
  Leptognathus copei Günther, 1872 -- invalid
  Leptognathus dimidiatus Günther, 1872 -- invalid
  Leptognathus elegans Boulenger, 1896 -- invalid
  Leptognathus ellipsifera Boulenger, 1898 -- invalid
  Leptognathus gracilis Boulenger, 1902 -- invalid
  Leptognathus incertus Jan, 1863 -- invalid
  Leptognathus margaritophorus Jan, 1866 -- invalid
  Leptognathus maxillaris Werner, 1910 -- invalid
  Leptognathus oreas Cope, 1868 -- invalid
  Leptognathus peruana Boettger, 1898 -- invalid
  Leptognathus philippii Jan, 1863 -- invalid
  Leptognathus praeornata Werner, 1909 -- invalid
  Leptognathus pratti Boulenger, 1897 -- invalid
  Leptognathus sanctijoannis Boulenger, 1911 -- invalid
  Leptognathus schunkii Boulenger, 1908 -- invalid
  Leptognathus temporalis Werner, 1909 -- invalid
  Leptognathus turgida Cope, 1868 -- invalid
  Leptognathus vagus Jan, 1863 -- invalid
  Leptognathus variegatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Leptognathus ventrimaculatus Boulenger, 1885 -- invalid
  Leptognathus viguieri Bocourt, 1884 -- invalid
  Leptomicrurus renjifoi Lamar, 2003 -- invalid
  Leptophis ahaetulla (Linnaeus, 1758) -- valid -- Culebra-perico verde, Giant Parrot Snake, Parrot Snake
  Leptophis ahaetulla ahaetulla (Linnaeus, 1758) -- valid
  Leptophis ahaetulla bocourti Boulenger, 1898 -- valid
  Leptophis ahaetulla bolivianus Oliver, 1942 -- valid
  Leptophis ahaetulla chocoensis Oliver, 1942 -- valid
  Leptophis ahaetulla liocercus (Wied-Neuwied, 1824) -- valid
  Leptophis ahaetulla marginatus (Cope, 1862) -- valid
  Leptophis ahaetulla nigromarginatus (Günther, 1866) -- valid
  Leptophis ahaetulla occidentalis (Günther, 1859) -- valid
  Leptophis ahaetulla ortonii Cope, 1876 -- valid
  Leptophis ahaetulla praestans (Cope, 1868) -- valid
  Leptophis bivittatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Leptophis bocourti Boulenger, 1898 -- invalid
  Leptophis coeruleodorsus Oliver, 1942 -- valid -- Oliver's Parrot Snake
  Leptophis cupreus (Cope, 1868) -- valid -- Copper Parrot Snake
  Leptophis depressirostris (Cope, 1861) -- valid -- Cope's Parrot Snake
  Leptophis diplotropis (Günther, 1872) -- valid -- Culebra-perico gargantilla, Pacific Coast Parrot Snake
  Leptophis diplotropis diplotropis (Günther, 1872) -- valid
  Leptophis diplotropis forreri H. M. Smith, 1943 -- valid
  Leptophis dorsalis Bocage, 1866 -- invalid
  Leptophis haileyi Murphy, Charles, Lehtinen and Koeller, 2013 -- valid
  Leptophis kirtlandii Hallowell, 1844 -- invalid
  Leptophis lateralis A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Leptophis mexicanus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Culebra-perico mexicana, Mexican Parrot Snake
  Leptophis mexicanus hoeversi Henderson, 1976 -- valid
  Leptophis mexicanus mexicanus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid
  Leptophis mexicanus septentrionalis Mertens, 1972 -- valid
  Leptophis mexicanus yucatanensis Oliver, 1942 -- valid
  Leptophis modestus (Günther, 1872) -- valid -- Culebra-perico de niebla, Cloud Forest Parrot Snake
  Leptophis nebulosus Oliver, 1942 -- valid -- Oliver's Parrot Snake
  Leptophis occidentalis chocoensis Oliver, 1942 -- invalid
  Leptophis ortonii Cope, 1876 -- invalid
  Leptophis punctulatus Gray, 1826 -- invalid
  Leptophis riveti Despax, 1910 -- valid -- Despax's Parrot Snake
  Leptophis stimsoni Harding, 1995 -- valid -- Gray Lora
  Leptophis varius Fischer, 1884 -- invalid
  Leptophis viridis Hallowell, 1844 -- invalid
  Lepturophis albofuscus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Dark Wolf Snake
  Lielaphis batjanensis Günther, 1865 -- invalid
  Ligonirostra stuhlmanni Pfeffer, 1893 -- invalid
  Limnophis Günther, 1865 -- valid
  Limnophis bangweolicus (Mertens, 1936) -- valid -- Eastern Striped Swamp Snake, Bangweulu Water Snake
  Limnophis bicolor Günther, 1865 -- valid -- Bicolored Swamp Snake
  Liodytes Cope, 1885 -- valid -- Swampsnakes
  Liodytes alleni (Garman, 1874) -- valid -- Striped Crayfish Snake, Striped Swampsnake
  Liodytes pygaea (Cope, 1871) -- valid -- Black Swampsnake, Black Swamp Snake
  Liodytes pygaea cyclas (Dowling, 1950) -- valid -- Southern Florida Swampsnake, South Florida Swamp Snake
  Liodytes pygaea paludis (Dowling, 1950) -- valid -- Carolina Swamp Snake, Carolina Swampsnake
  Liodytes pygaea pygaea (Cope, 1871) -- valid -- North Florida Swamp Snake, North Florida Swampsnake
  Liodytes rigida (Say, 1825) -- valid -- Crayfish Snake, Glossy Swampsnake
  Liodytes rigida deltae (Huheey, 1959) -- valid -- Delta Crawfish Snake, Delta Crayfish Snake, Delta Swampsnake
  Liodytes rigida rigida (Say, 1825) -- valid -- Eastern Glossy Swampsnake, Glossy Crayfish Snake, Glossy Crawfish Snake
  Liodytes rigida sinicola (Huheey, 1959) -- valid -- Gulf Swampsnake, Gulf Crayfish Snake, Gulf Crawfish Snake
  Lioheterophis iheringi Amaral, 1935 -- valid -- Ihering's Snake
  Liolaemidae -- valid
  Liolaemus abaucan Etheridge, 1993 -- valid
  Liolaemus abdalai Quinteros, 2012 -- valid
  Liolaemus acostai Abdala and Juárez-Heredia, 2013 -- valid
  Liolaemus albiceps Lobo and Laurent, 1995 -- valid
  Liolaemus alticolor Barbour, 1909 -- valid -- Brilliant Tree Iguana
  Liolaemus andinus Koslowsky, 1895 -- valid -- Andes Tree Iguana
  Liolaemus annectens Boulenger, 1901 -- valid
  Liolaemus anomalus Koslowsky, 1896 -- valid
  Liolaemus antumalguen Avila, Morando, C. H. F. Perez and Sites, 2010 -- valid
  Liolaemus aparicioi Ocampo, Aguilar-Kirigin and Quinteros, 2012 -- valid
  Liolaemus arambarensis Verrastro, Veronese, Bujes and Martins Fias Filho, 2003 -- valid
  Liolaemus araucaniensis L. Müller and Hellmich, 1932 -- valid
  Liolaemus archeforus Donoso-Barros and Cei, 1971 -- valid -- Main Tree Iguana
  Liolaemus atacamensis L. Müller and Hellmich, 1933 -- valid
  Liolaemus audituvelatus (Núñez and Yáñez, 1983) -- valid
  Liolaemus austromendocinus Cei, 1974 -- valid -- Austromendocino Tree Iguana
  Liolaemus avilai Breitman, Parra, Fulvio-Pérez and Sites, 2011 -- valid
  Liolaemus azarai Avila, 2003 -- valid
  Liolaemus baguali Cei and Scolaro, 1983 -- valid
  Liolaemus bellii Gray, 1845 -- valid
  Liolaemus bibronii (Bell, 1843) -- valid -- Bibron's Tree Iguana
  Liolaemus bitaeniatus Laurent, 1984 -- valid -- Striped Tree Iguana
  Liolaemus boulengeri Koslowsky, 1898 -- valid -- Boulenger's Tree Iguana
  Liolaemus buergeri Werner, 1907 -- valid -- Buerger's Tree Iguana
  Liolaemus burmeisteri Avila, C. H. F. Perez, Madina, Sites and Morando, 2012 -- valid
  Liolaemus calchaqui Lobo and Kretzschmar, 1996 -- valid
  Liolaemus camarones Abdala, Díaz Gómez and Juarez-Heredia, 2012 -- invalid
  Liolaemus canqueli Cei, 1975 -- valid
  Liolaemus caparensis Breitman, Fulvio-Pérez, Aarra, Morando, Sites and Avila, 2011 -- valid
  Liolaemus capillitas Hulse, 1979 -- valid -- Hulse's Tree Iguana
  Liolaemus carlosgarini Esquerré, Núñez and Soclaro, 2013 -- valid -- Garín's Lizard, Lagartija de Garín
  Liolaemus casamiquelai Avila, Morando, C. H. F. Perez and Sites, 2010 -- valid
  Liolaemus cazianiae Lobo, Slodki and Valdecantos, 2010 -- valid
  Liolaemus ceii Donoso-Barros, 1971 -- invalid
  Liolaemus chacabucoense Núñez and Scolaro, 2009 -- valid
  Liolaemus chacoensis Shreve, 1948 -- valid -- Chaco Tree Iguana
  Liolaemus chaltin Lobo and Espinoza, 2004 -- valid
  Liolaemus chavin Aguilar, Wood, Cusi, Guzmán, Huari, Lundberg et al., 2013 -- valid
  Liolaemus chehuachekenk Avila, Morando and Sites, 2008 -- valid
  Liolaemus chiliensis (Lesson, 1830) -- valid -- Chilean Tree Iguana, Weeping Lizard, Unidentata Lizard
  Liolaemus chillanensis L. Müller and Hellmich, 1932 -- valid -- Peak Tree Iguana
  Liolaemus chlorostictus Laurent, 1993 -- valid
  Liolaemus choique Abdala, Quinteros, Scrocchi and Stazzonelli, 2010 -- valid
  Liolaemus chungara Quinteros, Valladares, Semham, Acosta, Barrionuevo and Abdala, 2014 -- valid
  Liolaemus cinereus Monguillot, Cabrera, Acosta and Vallavicencio, 2006 -- valid
  Liolaemus coeruleus Cei and Ortiz-Zapata, 1983 -- valid -- Blue Tree Iguana
  Liolaemus confusus Núñez and Pincheira-Donoso, 2006 -- valid
  Liolaemus constanzae Donoso-Barros, 1961 -- valid -- Constanze's Tree Iguana
  Liolaemus crandalli Avila, Medina, Perez, Sites and Morando, 2015 -- valid
  Liolaemus cranwelli (Donoso-Barros, 1973) -- valid -- Cranwell's Tree Iguana
  Liolaemus crepuscularis Abdala and Díaz Gómez, 2006 -- valid
  Liolaemus cristiani Núñez, Navarro and Loyola, 1991 -- valid
  Liolaemus curicensis L. Müller and Hellmich, 1938 -- valid -- Curicen Tree Iguana
  Liolaemus curis Núñez and Babra, 1985 -- valid -- Nuñez' Tree Iguana
  Liolaemus cuyanus Cei and Scolaro, 1980 -- valid
  Liolaemus cuyumhue Avila, Morando, C. H. F. Perez and Sites, 2009 -- valid
  Liolaemus cyaneinotatus Martinez, Avila, C. H. F. Perez, D. R. Perez, Sites and Morando, 2011 -- valid
  Liolaemus cyanogaster (A. M. C. Duméril and Bibron, 1837) -- valid -- Cyan Tree Iguana
  Liolaemus cyanogaster brattstroemi Donoso-Barros, 1961 -- valid
  Liolaemus cyanogaster cyanogaster (A. M. C. Duméril and Bibron, 1837) -- valid
  Liolaemus darwinii (Bell, 1843) -- valid -- Darwin's Tree Iguana
  Liolaemus diaguita Abdala, Quinteros, Arias, Portelli and Palavecino, 2011 -- valid
  Liolaemus dicktracyi Espinoza and Lobo, 2003 -- valid
  Liolaemus disjunctus Laurent, 1990 -- valid
  Liolaemus ditadai Cei, 1983 -- valid
  Liolaemus donosobarrosi (Cei, 1974) -- valid -- Donoso-Barros' Tree Iguana
  Liolaemus dorbignyi Koslowsky, 1898 -- valid -- Dorbigny's Tree Iguana
  Liolaemus duellmani Cei, 1978 -- valid -- Duellman's Tree Iguana
  Liolaemus dumerili Abdala, Semhan, Moreno, Azocar, Bonino, Paz and Cruz, 2012 -- valid
  Liolaemus eleodori Cei, Etheridge and Videla, 1985 -- valid -- Eleodor's Tree Iguana
  Liolaemus elongatus Koslowsky, 1896 -- valid -- Elongate Tree Iguana
  Liolaemus erguetae Laurent, 1995 -- valid
  Liolaemus erroneus (Núñez and Yáñez, 1983) -- valid
  Liolaemus escarchadosi Scolaro, 1997 -- valid
  Liolaemus espinozai Abdala, 2005 -- valid
  Liolaemus etheridgei Laurent, 1998 -- valid
  Liolaemus exploratorum Cei and Williams, 1984 -- valid
  Liolaemus fabiani Yáñez and Núñez, 1983 -- valid -- Yanez's Tree Iguana
  Liolaemus famatinae Cei, 1980 -- valid
  Liolaemus fittkaui Laurent, 1986 -- valid
  Liolaemus fitzgeraldi Boulenger, 1899 -- valid -- Fitzgerald's Tree Iguana
  Liolaemus fitzingerii (A. M. C. Duméril and Bibron, 1837) -- valid -- Fitzinger's Tree Iguana
  Liolaemus flavipiceus Cei and Videla, 2003 -- valid
  Liolaemus forsteri Laurent, 1982 -- valid -- Forster's Tree Iguana
  Liolaemus foxi Núñez, Navarro and A. Veloso, 2000 -- valid -- Fox's Lizard
  Liolaemus frassinettii Núñez, 2007 -- valid
  Liolaemus fuscus Boulenger, 1885 -- valid -- Brown Tree Iguana
  Liolaemus gallardoi Cei and Scolaro, 1985 -- valid
  Liolaemus goetschi L. Müller and Hellmich, 1938 -- valid
  Liolaemus gracielae Abdala, Acosta, Cabrera, Villavicencio and Marinero, 2009 -- valid
  Liolaemus gracilis (Bell, 1843) -- valid -- Graceful Tree Iguana
  Liolaemus gravenhorstii (Gray, 1845) -- valid -- Gravenhorst's Tree Iguana
  Liolaemus griseus Laurent, 1984 -- valid -- Gray Tree Iguana
  Liolaemus grosseorum Etheridge, 2001 -- valid
  Liolaemus gununakuna Avila, Morando, C. H. F. Perez and Sites, 2004 -- valid
  Liolaemus hajeki Núñez, Pincheira-Donoso and Garín, 2004 -- valid -- Hajek's Lizard
  Liolaemus halonastes Lobo, Slodki and Valdecantos, 2010 -- valid
  Liolaemus hatcheri Stejneger, 1909 -- valid
  Liolaemus heliodermis Espinoza, Lobo and Cruz, 2000 -- valid
  Liolaemus hellmichi Donoso-Barros, 1975 -- valid -- Hellmich's Tree Iguana
  Liolaemus hermannunezi Pincheira-Donoso, Scolaro and Schulte, 2007 -- valid
  Liolaemus huacahuasicus Laurent, 1985 -- valid
  Liolaemus huayra Abdala, Quinteros and Espinoza, 2008 -- valid
  Liolaemus inacayali Abdala, 2003 -- valid
  Liolaemus incaicus Lobo, Quinteros and Gómez, 2007 -- valid
  Liolaemus insolitus Cei, 1982 -- valid
  Liolaemus inti Abdala, Quinteros and Espinoza, 2008 -- valid
  Liolaemus irregularis Laurent, 1986 -- valid
  Liolaemus isabelae Navarro and Núñez, 1993 -- valid
  Liolaemus jamesi (Boulenger, 1891) -- valid -- James' Jararanco, James' Tree Iguana
  Liolaemus jamesi aymararum Veloso et al., 1982 -- valid
  Liolaemus jamesi jamesi (Boulenger, 1891) -- valid
  Liolaemus janequeoae Troncoso-Palacios, Díaz, Puas, Riveros-Riffo and Elorza, 2016 -- valid -- Janequeo's Lizard
  Liolaemus josei Abdala, 2005 -- valid
  Liolaemus juanortizi Young-Downey and Moreno, 1992 -- valid
  Liolaemus kingii (Bell, 1843) -- valid -- King's Tree Iguana
  Liolaemus kolengh Abdala and Lobo, 2006 -- valid
  Liolaemus koslowskyi Etheridge, 1993 -- valid
  Liolaemus kriegi L. Müller and Hellmich, 1939 -- valid -- Krieg's Tree Iguana
  Liolaemus kuhlmanni L. Müller and Hellmich, 1933 -- valid -- Kuhlman's Tree Iguana
  Liolaemus laurenti Etheridge, 1992 -- valid
  Liolaemus lavillai Abdala and Lobo, 2006 -- valid
  Liolaemus leftrarui Troncoso-Palacios, Díaz, Puas, Riveros-Riffo and Elorza, 2016 -- valid -- Leftraru's Lizard
  Liolaemus lemniscatus Gravenhorst, 1838 -- valid -- Wreath Tree Iguana
  Liolaemus lentus Gallardo, 1966 -- valid
  Liolaemus leopardinus L. Müller and Hellmich, 1932 -- valid -- Leopard Tree Iguana
  Liolaemus lineomaculatus Boulenger, 1885 -- valid -- Decorated Tree Iguana
  Liolaemus loboi Abdala, 2003 -- valid
  Liolaemus lonquimayensis Escobar-Huerta, Santaibáñez-Toro and Ortíz, 2015 -- valid
  Liolaemus lopezi Ibarra-Vidal, 2005 -- valid
  Liolaemus lorenzmuelleri Hellmich, 1950 -- valid -- Lorenz's Tree Iguana
  Liolaemus lutzae Mertens, 1938 -- valid -- Lutz's Tree Iguana
  Liolaemus magellanicus Hombron and Jacquinot, 1847 -- valid -- Magellan's Tree Iguana
  Liolaemus maldonadae Núñez, Navarro and Loyola, 1991 -- valid
  Liolaemus manueli (Núñez, Navarro, Garín, Pincheira-Donoso and Meriggio, 2003) -- valid -- Dragon of Torres
  Liolaemus mapuche Abdala, 2002 -- valid
  Liolaemus martorii Abdala, 2003 -- valid
  Liolaemus melaniceps Pincheira-Donoso and Núñez, 2005 -- valid
  Liolaemus melanogaster Laurent, 1998 -- valid
  Liolaemus melanopleurus (Philippi, 1860) -- valid
  Liolaemus melanops Burmeister, 1888 -- valid
  Liolaemus millcayac Abdala and Juárez-Heredia, 2013 -- valid
  Liolaemus molinai Valladares, Etheridge, Schulte, Manriquez and Spotorno, 2012 -- valid
  Liolaemus montanezi Cabrera and Monguillot, 2006 -- valid
  Liolaemus montanus Koslowsky, 1898 -- valid -- Mountain Tree Iguana
  Liolaemus monticola L. Müller and Hellmich, 1932 -- valid -- Peak Tree Iguana
  Liolaemus moradoensis Hellmich, 1950 -- valid
  Liolaemus morandae Breitman, Parra, Fulvio-Pérez and Sites, 2011 -- valid
  Liolaemus morenoi Etheridge and Christie, 2003 -- valid
  Liolaemus multicolor Koslowsky, 1898 -- valid -- Many-colored Tree Iguana
  Liolaemus multimaculatus (A. M. C. Duméril and Bibron, 1837) -- valid -- Many-spotted Tree Iguana
  Liolaemus neuquensis L. Müller and Hellmich, 1939 -- valid
  Liolaemus nigriceps (Philippi, 1860) -- valid -- Black Tree Iguana
  Liolaemus nigrocoeruleus Marambio-Alfaro and Troncoso-Palacios, 2014 -- valid
  Liolaemus nigromaculatus (Wiegmann, 1834) -- valid -- Many-spotted Tree Iguana
  Liolaemus nigroviridis L. Müller and Hellmich, 1932 -- valid -- Black-green Tree Iguana
  Liolaemus nitidus (Wiegmann, 1834) -- valid -- Shining Tree Iguana
  Liolaemus occipitalis Boulenger, 1885 -- valid -- Skull Tree Iguana
  Liolaemus olongasta Etheridge, 1993 -- valid
  Liolaemus omorfi Demangel, Sepúlveda, Jara, Pincheira-Donoso and Núñez, 2015 -- valid -- Beautiful Lizard
  Liolaemus orientalis L. Müller, 1924 -- valid
  Liolaemus orko Abdala and Quinteros, 2008 -- valid
  Liolaemus ornatus Koslowsky, 1898 -- valid -- Ornate Tree Iguana
  Liolaemus ortizii Laurent, 1982 -- valid -- Ortiz's Tree Iguana
  Liolaemus pacha Juárez Heredia, Robles and Halloy, 2013 -- valid
  Liolaemus pachacutec Aguilar, Wood, Cusi, Guzmán, Huari, Lundberg et al., 2013 -- valid
  Liolaemus pachecoi Laurent, 1995 -- valid
  Liolaemus pagaburoi Lobo and Espinoza, 1999 -- valid
  Liolaemus pantherinus Pellegrin, 1909 -- valid -- Panther Tree Iguana
  Liolaemus parthenos Abdala, Baldo, Juárez and Espinoza, 2016 -- valid
  Liolaemus parvus Quinteros, Abdala, Díaz Gómez and Scrocchi, 2008 -- valid
  Liolaemus patriciaiturrae Navarro and Núñez, 1993 -- valid
  Liolaemus paulinae Donoso-Barros, 1961 -- valid -- Paulina's Tree Iguana
  Liolaemus petrophilus Donoso-Barros and Cei, 1971 -- valid
  Liolaemus pictus (A. M. C. Duméril and Bibron, 1837) -- valid -- Painted Tree Iguana
  Liolaemus pictus argentinus Müller and Hellmich, 1939 -- valid
  Liolaemus pictus chiloeensis Müller and Hellmich, 1939 -- valid
  Liolaemus pictus codoceae Pincheira-Donoso and Núñez, 2005 -- valid
  Liolaemus pictus major Boulenger, 1885 -- valid
  Liolaemus pictus pictus A. M. C. Duméril and Bibron, 1837 -- valid
  Liolaemus pictus talcanensis Urbina and Zungia, 1977 -- valid
  Liolaemus pipanaco Abdala and Juárez-Heredia, 2013 -- valid
  Liolaemus platei Werner, 1898 -- valid -- Braided Tree Iguana
  Liolaemus pleopholis Laurent, 1998 -- valid
  Liolaemus poconchilensis Valladares, 2004 -- valid
  Liolaemus poecilochromus Laurent, 1986 -- valid
  Liolaemus polystictus Laurent, 1992 -- valid
  Liolaemus porosus Abdala, Paz and Semhan, 2013 -- valid
  Liolaemus pseudoanomalus Cei, 1981 -- valid
  Liolaemus pseudolemniscatus Lamborot and Ortíz, 1990 -- valid
  Liolaemus puelche Avila, Morando, C. H. F. Perez and Sites, 2007 -- valid
  Liolaemus pulcherrimus Laurent, 1992 -- valid
  Liolaemus puna Lobo and Espinoza, 2004 -- valid
  Liolaemus punmahuida Avila, C. H. F. Perez and Morando, 2003 -- valid
  Liolaemus puritamensis Núñez and Fox, 1989 -- valid
  Liolaemus purul Abdala, Semhan, Moreno, Azocar, Bonino, Paz and Cruz, 2012 -- valid
  Liolaemus pyriphlogos Quinteros, 2012 -- valid
  Liolaemus quilmes Etheridge, 1993 -- valid
  Liolaemus rabinoi (Cei, 1974) -- valid -- Rabino's Tree Iguana
  Liolaemus ramirezae Lobo and Espinoza, 1999 -- valid
  Liolaemus ramonensis L. Müller and Hellmich, 1932 -- valid
  Liolaemus riodamas Esquerré, Núñez and Soclaro, 2013 -- valid -- Las Damas River Lizard, Lagarto del Rio Las Damas
  Liolaemus riojanus Cei, 1979 -- valid
  Liolaemus robertmertensi Hellmich, 1964 -- valid -- Robert's Tree Iguana
  Liolaemus robertoi Pincheira-Donoso and Núñez, 2004 -- valid -- Roberto's Lizard
  Liolaemus robustus Laurent, 1992 -- valid
  Liolaemus rosenmanni Núñez and Navarro, 1992 -- valid
  Liolaemus rothi Koslowsky, 1898 -- valid -- Roth's Sand Iguana, Roth's Rock Lizard
  Liolaemus ruibali Donoso-Barros, 1961 -- valid -- Ruibal's Tree Iguana
  Liolaemus sagei Etheridge and Christie, 2003 -- valid
  Liolaemus salinicola Laurent, 1986 -- valid
  Liolaemus sanjuanensis Cei, 1982 -- valid -- San Juan Tree Iguana
  Liolaemus sarmientoi Donoso-Barros, 1973 -- valid
  Liolaemus saxatilis Avila and Cei, 1992 -- valid
  Liolaemus scapularis Laurent, 1982 -- valid -- Shoulder Tree Iguana
  Liolaemus schmidti (Marx, 1960) -- valid -- Schmidt's Tree Iguana
  Liolaemus schroederi L. Müller and Hellmich, 1938 -- valid -- Schroeder's Tree Iguana
  Liolaemus scolaroi Pincheira-Donoso and Núñez, 2005 -- valid
  Liolaemus scorialis Troncoso-Palacios, Díaz, Esquerré and Urra, 2015 -- valid -- Slag Lizard
  Liolaemus scrocchii Quinteros, Abdala and Lobo, 2008 -- valid
  Liolaemus senguer Abdala, 2005 -- valid
  Liolaemus septentrionalis Pincheira-Donoso and Núñez, 2005 -- valid -- Painted Tree Iguana
  Liolaemus shehuen Abdala, Díaz Gómez and Juarez-Heredia, 2012 -- valid
  Liolaemus shitan Abdala, Quinteros, Scrocchi and Stazzonelli, 2010 -- valid
  Liolaemus signifer (A. M. C. Duméril and Bibron, 1837) -- valid -- Zodiac Tree Iguana
  Liolaemus silvai Ortíz, 1989 -- valid
  Liolaemus silvanae (Donoso-Barros and Cei, 1971) -- valid
  Liolaemus sitesi Avila, Olave, C. H. F. Perez, D. R. Perez and Morando, 2013 -- valid
  Liolaemus smaug Abdala, Quinteros, Scrocchi and Stazzonelli, 2010 -- valid
  Liolaemus somuncurae Cei and Scolaro, 1981 -- valid
  Liolaemus stolzmanni (Steindachner, 1891) -- valid -- Stolzmann's Pacific Iguana
  Liolaemus tacnae (Shreve, 1941) -- valid
  Liolaemus tacora Demangel, 2016 -- valid
  Liolaemus talampaya Avila, Morando, C. H. F. Perez and Sites, 2004 -- valid
  Liolaemus tandiliensis Vega, Bellagamba and Lobo, 2008 -- valid
  Liolaemus tari Scolaro and Cei, 1997 -- valid
  Liolaemus tehuelche Abdala, 2003 -- valid
  Liolaemus telsen Cei and Scolaro, 1999 -- valid
  Liolaemus tenuis (A. M. C. Duméril and Bibron, 1837) -- valid -- Thin Tree Iguana
  Liolaemus tenuis punctatissimus Müller and Hellmich, 1933 -- valid
  Liolaemus tenuis tenuis (A. M. C. Duméril and Bibron, 1837) -- valid
  Liolaemus thermarum Videla and Cei, 1996 -- valid
  Liolaemus thomasi Laurent, 1998 -- valid
  Liolaemus torresi (Núñez, Navarro, Garín, Pincheira-Donoso and Meriggio, 2003) -- valid -- Dragon of Torres-Mura
  Liolaemus tregenzai Pincheira-Donoso and Scolaro, 2007 -- valid
  Liolaemus tristis Scolaro and Cei, 1997 -- valid
  Liolaemus tromen Abdala, Semhan, Moreno, Azocar, Bonino, Paz and Cruz, 2012 -- valid
  Liolaemus tulkas Quinteros, Abdala, Díaz Gómez and Scrocchi, 2008 -- valid
  Liolaemus ubaghsi Esquerré, Troncoso-Palacios, Garín and Núñez, 2014 -- valid -- Ubaghs' leopard lizard, Lagarto leopardo de Ubaghs
  Liolaemus umbrifer Espinoza and Lobo, 2003 -- valid
  Liolaemus uniformis Troncoso-Palacios, Elorza, Puas and Alfaro-Pardo, 2016 -- valid
  Liolaemus uptoni Scolaro and Cei, 2006 -- valid
  Liolaemus uspallatensis Macola and Castro, 1982 -- valid -- Macola's Tree Iguana
  Liolaemus valdesianus Hellmich, 1950 -- valid
  Liolaemus vallecurensis Pereyra, 1992 -- valid
  Liolaemus variegatus Laurent, 1984 -- valid -- Variegated Tree Iguana
  Liolaemus velosoi Ortíz, 1987 -- valid
  Liolaemus villaricensis Müller and Hellmich, 1932 -- valid -- Villarica Tree Iguana
  Liolaemus vulcanus Quinteros and Abdala, 2011 -- valid
  Liolaemus walkeri Shreve, 1938 -- valid -- Walker's Tree Iguana
  Liolaemus wari Aguilar, Wood, Cusi, Guzmán, Huari, Lundberg et al., 2013 -- valid
  Liolaemus wiegmannii (A. M. C. Duméril and Bibron, 1837) -- valid
  Liolaemus williamsi Laurent, 1992 -- valid
  Liolaemus xanthoviridis Cei and Scolaro, 1980 -- valid
  Liolaemus yalguaraz Abdala, Quinteros and Semham, 2015 -- valid
  Liolaemus yanalcu Martínez Oliver and Lobo, 2002 -- valid
  Liolaemus yatel Abdala, Procopio, Stellatelli, Travaini, Ruiz and Monachesi, 2014 -- valid
  Liolaemus zabalai Troncoso-Palacios, Díaz, Esquerré and Urra, 2015 -- valid
  Liolaemus zapallarensis L. Müller and Hellmich, 1933 -- valid -- Zapallaren Tree Iguana
  Liolaemus zapallarensis ater L. Müller and Hellmich, 1933 -- valid
  Liolaemus zapallarensis sieversi Donoso-Barros, 1954 -- valid
  Liolaemus zapallarensis zapallarensis L. Müller and Hellmich, 1933 -- valid
  Liolaemus zullyae Cei and Scolaro, 1996 -- valid
  Lioninia vermiformis Hallowell, 1861 -- invalid
  Liopeltis baliodeirus cochranae Taylor, 1962 -- invalid
  Liopeltis calamaria (Günther, 1858) -- valid -- Calamaria Reed Snake
  Liopeltis frenatus (Günther, 1858) -- valid -- Günther's Reed Snake
  Liopeltis kawakami Oshima, 1911 -- invalid
  Liopeltis kikuzatoi Okada and Takara, 1958 -- invalid
  Liopeltis philippinus (Boettger, 1897) -- valid -- Philippine Liopeltine Snake
  Liopeltis rappi (Günther, 1860) -- valid -- Himalayan Stripe-necked Snake
  Liopeltis stoliczkae (Sclater, 1891) -- valid
  Liopeltis tricolor (Schlegel, 1837) -- valid -- Malayan Ringneck
  Liophidium apperti Domergue, 1984 -- valid
  Liophidium chabaudi Domergue, 1984 -- valid
  Liophidium maintikibo Franzen, Jones, Raselimanana, Nagy, d'Cruze, Glaw and Vences, 2009 -- valid
  Liophidium mayottensis (Peters, 1874) -- valid -- Peters' Bright Snake
  Liophidium pattoni Vieites, Ratsoavina, Randrianiaina, Nagy, Glaw and Vences, 2010 -- valid
  Liophidium rhodogaster (Schlegel, 1837) -- valid -- Gold-collarcd Snake
  Liophidium therezieni Domergue, 1984 -- valid
  Liophidium torquatum (Boulenger, 1888) -- valid
  Liophidium trilineatum Boulenger, 1896 -- valid -- Madagascar Three-lined Snake
  Liophidium vaillanti (Mocquard, 1901) -- valid
  Liophis andreae Reinhardt and Lütken, 1862 -- invalid
  Liophis atahuallpae Steindachner, 1901 -- invalid
  Liophis bimaculatus Cope, 1899 -- invalid
  Liophis bimaculatus lamonae Dunn, 1944 -- invalid
  Liophis dorsocorallinus Esqueda, Natera, la Marca and Ilija-Fistar, 2007 -- invalid
  Liophis elaeoides Griffin, 1916 -- invalid
  Liophis elapoides diastema Bocourt, 1886 -- invalid
  Liophis epinephelus kogiorum Bernal-Carlo, 1994 -- invalid
  Liophis flavitorques Cope, 1868 -- invalid
  Liophis fraseri Boulenger, 1894 -- invalid
  Liophis genimaculata Boettger, 1885 -- invalid
  Liophis imerinae Günther, 1890 -- invalid
  Liophis ingeri Roze, 1958 -- invalid
  Liophis janaleeae Dixon, 2000 -- invalid
  Liophis janii Dugès, 1865 -- invalid
  Liophis lateristriga Berthold, 1859 -- invalid
  Liophis merremii sublineatus Cope, 1860 -- invalid
  Liophis mossoroensis Hoge and Lima-Verde, 1973 -- invalid
  Liophis opisthotaenia Boulenger, 1908 -- invalid
  Liophis persimilis Cope, 1868 -- invalid
  Liophis problematicus Myers, 1986 -- invalid
  Liophis pseudocobella Peracca, 1914 -- invalid
  Liophis pygmaeus Cope, 1868 -- invalid
  Liophis quinquelineatus Günther, 1881 -- invalid
  Liophis reginae albiventris Jan, 1863 -- invalid
  Liophis taeniogaster Jan, 1866 -- invalid
  Liophis torrenicola Donnelly and Myers, 1991 -- invalid
  Liophis trebbaui Roze, 1958 -- invalid
  Liophis typhlus prasina Jan and Sordelli, 1866 -- invalid
  Liophis vitti Dixon, 2000 -- invalid
  Liophis wagleri varia Jan, 1863 -- invalid
  Liopholidophis baderi Glaw, Kucharzewski, Nagy, Hawlitschek and Vences, 2013 -- valid
  Liopholidophis dimorphus Glaw, Nagy, Franzen and Vences, 2007 -- valid
  Liopholidophis dolicocercus (Peracca, 1892) -- valid
  Liopholidophis epistibes Cadle, 1996 -- invalid
  Liopholidophis grandidieri Mocquard, 1904 -- valid -- Grandidier's Water Snake
  Liopholidophis martae Glaw, Franzen and Vences, 2005 -- invalid
  Liopholidophis oligolepis Glaw, Kucharzewski, Nagy, Hawlitschek and Vences, 2013 -- valid
  Liopholidophis rhadinaea Cadle, 1996 -- valid
  Liopholidophis sexlineatus (Günther, 1882) -- valid -- Six-lined Water Snake
  Liopholidophis varius (Fischer, 1884) -- valid
  Lophocalotes Günther, 1872 -- valid
  Lophocalotes ludekingi (Bleeker, 1860) -- valid -- Crested Lizard
  Lophognathus Gray, 1842 -- valid
  Lophognathus burnsi Wells and Wellington, 1985 -- invalid
  Lophognathus gilberti Gray, 1842 -- valid -- Gilbert's Lashtail
  Lophognathus maculilabris Boulenger, 1883 -- valid
  Lophosaurus boydii (MacLeay, 1884) -- valid -- Boyd's Forest Dragon
  Lophosaurus dilophus (A. M. C. Duméril and Bibron, 1837) -- valid -- Indonesian Forest Dragon
  Lophosaurus spinipes (A. M. C. Duméril and Bibron, 1851) -- valid -- Southern Forest Dragon, Southern Angle-Headed Dragon
  Loveridgelaps elapoides (Boulenger, 1890) -- valid -- Solomon's Small-eyed Snake
  Lycodon albofuscus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- invalid
  Lycodon alcalai Ota and Ross, 1994 -- valid -- Alcala's Wolf Snake
  Lycodon aulicus (Linnaeus, 1758) -- valid -- Indian Wolf Snake
  Lycodon bibonius Ota and Ross, 1994 -- valid -- Ota's Wolf Snake
  Lycodon butleri Boulenger, 1900 -- valid -- Butler's Wolf Snake
  Lycodon capensis A. Smith, 1831 -- invalid
  Lycodon capucinus H. Boie in F. Boie, 1827 -- valid -- Common Wolf Snake
  Lycodon cardamomensis Daltry and Wüster, 2002 -- valid
  Lycodon carinatus (Kuhl, 1820) -- valid -- Ceylon Wolf Snake
  Lycodon cavernicolus Grismer, Quah, Anuar M.S., Muin, Wood and Nor, 2014 -- valid -- Gua Wang Burma Wolf Snake
  Lycodon chrysoprateros Ota and Ross, 1994 -- valid -- Ross' Wolf Snake
  Lycodon cucullatum A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Lycodon davidi Vogel, Nguyen, Kingsda and Ziegler, 2012 -- valid -- David's Wolf Snake
  Lycodon dumerilii (Boulenger, 1893) -- valid -- Duméril's Wolf Snake
  Lycodon effraenis Cantor, 1847 -- valid -- Brown Wolf Snake
  Lycodon fasciatus (Anderson, 1879) -- valid -- Banded Wolf Snake
  Lycodon fausti Gaulke, 2002 -- valid -- Faust's Wolf Snake
  Lycodon ferroni Lanza, 1999 -- valid
  Lycodon flavicollis Mukherjee and Bhupathy, 2007 -- valid -- Yellow-collared Wolf Snake
  Lycodon flavomaculatus Wall, 1907 -- valid -- Yellow-spotted Wolf Snake
  Lycodon flavozonatus (Pope, 1928) -- valid -- Big-tooth Snake
  Lycodon florensis de Rooij, 1917 -- invalid
  Lycodon fuliginosus F. Boie, 1827 -- invalid
  Lycodon futsingensis (Pope, 1928) -- valid
  Lycodon gammiei (Blanford, 1878) -- valid -- Gammie's Wolf Snake, Sikkim False Wolf Snake
  Lycodon geometricus Schlegel, 1837 -- invalid
  Lycodon gongshan Vogel and Luo, 2011 -- valid -- Gongshan Wolf Snake
  Lycodon guttatus A. Smith, 1843 -- invalid
  Lycodon hypsirhinoides (Theobald, 1868) -- valid
  Lycodon jara (Shaw, 1802) -- valid -- Twin-spotted Wolf Snake
  Lycodon kundui M. A. Smith, 1943 -- valid
  Lycodon laoensis Günther, 1864 -- valid -- Laotian Wolf Snake
  Lycodon lineatus Reinhardt, 1843 -- invalid
  Lycodon liuchengchaoi Zhang, Jiang, Vogel and Rao, 2011 -- valid
  Lycodon lyrophanes Cope, 1860 -- invalid
  Lycodon mackinnoni Wall, 1906 -- valid -- Mackinnon's Wolf Snake
  Lycodon melanocephalus Gray, 1835 -- invalid
  Lycodon meridionale Bourret, 1935 -- valid
  Lycodon modestus Schlegel, 1837 -- invalid
  Lycodon muelleri A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Müller's Wolf Snake
  Lycodon multifasciatus (Maki, 1931) -- valid
  Lycodon multizonatus (Zhao and Jiang, 1981) -- valid -- Luding Wolf Snake, Luding Kukri Snake
  Lycodon olivaceus Gray, 1842 -- invalid
  Lycodon ophiophagus Vogel, David, Pauwels, Sumontha, Norval, Hendrix, Vu and Ziegler, 2009 -- valid -- Snake-eater Wolf Snake
  Lycodon orientalis (Hilgendorf, 1880) -- valid -- Oriental Odd-tooth Snake
  Lycodon osmanhilli Taylor, 1950 -- valid -- Colombo Wolf Snake
  Lycodon parvus Meyer, 1874 -- invalid
  Lycodon paucifasciatus Rendahl in M. A. Smith, 1943 -- valid -- Rendahl's Wolf Snake
  Lycodon reticulatus Gray, 1842 -- invalid
  Lycodon rosozonatus (Hu and Zhao, 1972) -- valid -- Rose Big-tooth Snake
  Lycodon rufozonatus Cantor, 1842 -- valid -- Red-banded Snake
  Lycodon rufozonatus rufozonatus Cantor, 1842 -- valid
  Lycodon rufozonatus walli (Stejneger, 1907) -- valid
  Lycodon ruhstrati (Fischer, 1886) -- valid -- Mountain Wolf Snake, Formosa Wolf Snake
  Lycodon ruhstrati abditus Vogel et al., 2009 -- valid
  Lycodon ruhstrati ruhstrati (Fischer, 1886) -- valid
  Lycodon semicarinatus (Cope, 1860) -- valid -- Loo-Choo Big-tooth Snake, Ryukyu Odd-tooth Snake
  Lycodon septentrionalis (Günther, 1875) -- valid -- Northern Large-toothed Snake, White-banded Wolf Snake
  Lycodon solivagus Ota and Ross, 1994 -- valid -- Common Wolf Snake
  Lycodon stormi Boettger, 1892 -- valid -- Sulawesi Wolf Snake
  Lycodon striatus (Shaw, 1802) -- valid -- Northern Wolf Snake, Barred Wolf Snake
  Lycodon striatus bicolor (Nikolsky, 1903) -- valid
  Lycodon striatus sinhaleyus Deraniyagala, 1955 -- valid
  Lycodon striatus striatus (Shaw, 1802) -- valid
  Lycodon subcinctus F. Boie, 1827 -- valid -- Malayan Banded Wolf Snake
  Lycodon subcinctus sealei Leviton, 1955 -- valid
  Lycodon subcinctus subcinctus F. Boie, 1827 -- valid
  Lycodon synaptor Vogel and David, 2010 -- valid -- Boehme's Wolf Snake
  Lycodon tessellatus Jan, 1863 -- valid -- Manila Wolf Snake
  Lycodon tiwarii Biswas and Sanyal, 1965 -- valid -- Andaman Wolf Snake
  Lycodon travancoricus (Beddome, 1870) -- valid -- Travancore Wolf Snake
  Lycodon zawi Slowinski, Pawar, Win, Thin, Gyi, Oo and Tun, 2001 -- valid -- Zaw's Wolf Snake
  Lycodon zoosvictoriae Neang, Hartmann, Hun, Souter and Furey, 2014 -- valid -- Zoos Victoria's Wolf Snake
  Lycodonomorphus bicolor (Günther, 1893) -- valid -- Tanganyika Water Snake, White-bellied Water Snake
  Lycodonomorphus inornatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Olive House Snake, Black House Snake
  Lycodonomorphus laevissimus (Günther, 1862) -- valid -- Dusky-bellied Water Snake
  Lycodonomorphus laevissimus fitzsimonsi Raw, 1973 -- valid
  Lycodonomorphus laevissimus laevissimus (Günther, 1862) -- valid
  Lycodonomorphus laevissimus natalensis Raw, 1973 -- valid
  Lycodonomorphus leleupi (Laurent, 1950) -- valid -- Congo Dark-bellied Water-Snake, Mulanje Water Snake
  Lycodonomorphus mlanjensis Loveridge, 1953 -- valid -- Mlanje White-bellied Water-Snake
  Lycodonomorphus obscuriventris Fitzsimons, 1963 -- valid -- Floodplain Water Snake
  Lycodonomorphus rufulus (Lichtenstein, 1823) -- valid -- Olive-brown Water-Snake, South African Rufous Snake, Common Brown Water Snake
  Lycodonomorphus rufulus mlanjensis Loveridge, 1953 -- invalid
  Lycodonomorphus subtaeniatus Laurent, 1954 -- valid -- Eastern Congo White-bellied Water-Snake, Lined Water Snake
  Lycodonomorphus subtaeniatus upembae Laurent, 1954 -- invalid
  Lycodonomorphus whytii (Boulenger, 1897) -- valid -- Whyte's Water-Snake
  Lycodonomorphus whytii obscuriventris Fitzsimons, 1963 -- invalid
  Lycodryas carleti (Domergue, 1995) -- valid
  Lycodryas citrinus (Domergue, 1995) -- valid
  Lycodryas cococola Hawlitschek, Nagy and Glaw, 2012 -- valid
  Lycodryas cococola cococola Hawlitschek, Nagy and Glaw, 2012 -- valid
  Lycodryas cococola innocens Hawlitschek, Nagy and Glaw, 2012 -- valid
  Lycodryas gaimardi (Schlegel, 1837) -- valid
  Lycodryas granuliceps (Boettger, 1877) -- valid
  Lycodryas guentheri (Boulenger, 1896) -- valid
  Lycodryas inopinae (Domergue, 1995) -- valid
  Lycodryas inornatus (Boulenger, 1896) -- valid
  Lycodryas maculatus (Günther, 1858) -- valid -- Spotted Tree Snake
  Lycodryas maculatus comorensis (Peters, 1874) -- valid
  Lycodryas maculatus maculatus (Günther, 1858) -- valid
  Lycodryas pseudogranuliceps (Domergue, 1995) -- valid
  Lycognathophis Boulenger, 1893 -- valid
  Lycognathophis seychellensis (Schlegel, 1837) -- valid
  Lycophidion acutirostre Günther, 1868 -- valid -- Mozambique Wolf Snake
  Lycophidion albomaculatum Steindachner, 1870 -- valid
  Lycophidion capense (A. Smith, 1831) -- valid -- Cape Wolf Snake
  Lycophidion capense capense (A. Smith, 1831) -- valid
  Lycophidion capense jacksoni Boulenger, 1893 -- valid
  Lycophidion capense loveridgei Laurent, 1968 -- valid
  Lycophidion capense multimaculata Boettger, 1888 -- invalid
  Lycophidion capense pembanum Laurent, 1968 -- invalid
  Lycophidion capense uzungwense Loveridge, 1932 -- invalid
  Lycophidion depressirostre Laurent, 1968 -- valid -- Flat-snouted Wolf Snake
  Lycophidion elapoides angusticinctum Laurent, 1952 -- invalid
  Lycophidion hellmichi Laurent, 1964 -- valid -- Hellmich's Wolf Snake
  Lycophidion irroratum (Leach, 1819) -- valid -- Leach's Wolf Snake, Pale Wolf Snake
  Lycophidion jacksoni Boulenger, 1893 -- invalid
  Lycophidion laterale Hallowell, 1857 -- valid -- Flat Wolf Snake
  Lycophidion meleagre Boulenger, 1893 -- valid -- Speckled Wolf Snake
  Lycophidion multimaculatum Boettger, 1888 -- valid -- Cape Wolf Snake
  Lycophidion namibianum Broadley, 1991 -- valid -- Namibian Wolf Snake
  Lycophidion nanum (Broadley, 1958) -- valid
  Lycophidion nigromaculatum (Peters, 1863) -- valid
  Lycophidion ornatum Parker, 1936 -- valid -- Ornate Wolf Snake
  Lycophidion pembanum Laurent, 1968 -- valid -- Pemba Wolf Snake
  Lycophidion pygmaeum Broadley, 1996 -- valid -- Pygmy Wolf Snake
  Lycophidion semiannule Peters, 1854 -- valid -- Eastern Wolf Snake
  Lycophidion semicinctum A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid
  Lycophidion taylori Broadley and Hughes, 1993 -- valid -- Taylor's Wolf Snake
  Lycophidion uzungwense Loveridge, 1932 -- valid -- Red-snouted Wolf Snake
  Lycophidion variegatum Broadley, 1969 -- valid -- Variegated Wolf Snake
  Lycophidium elapoides Günther, 1874 -- invalid
  Lycophidium werneri Mocquard, 1902 -- invalid
  Lygophis anomalus (Günther, 1858) -- valid
  Lygophis dilepis Cope, 1862 -- valid -- Lema's Ground Snake, Lema's Striped Snake
  Lygophis elegans Tschudi, 1845 -- invalid
  Lygophis elegantissimus (Koslowsky, 1896) -- valid
  Lygophis flavifrenatus Cope, 1862 -- valid -- Fronted Ground Snake
  Lygophis lachrymans Cope, 1870 -- invalid
  Lygophis lineatus (Linnaeus, 1758) -- valid -- Lined Ground Snake
  Lygophis meridionalis (Schenkel, 1901) -- valid
  Lygophis nicagus Cope, 1868 -- invalid
  Lygophis paucidens Hoge, 1953 -- valid -- Hoge's Ground Snake
  Lygophis vanzolinii (Dixon, 1985) -- valid -- Vanzolini's Ground Snake
  Lyriocephalus Merrem, 1820 -- valid
  Lyriocephalus scutatus (Linnaeus, 1758) -- valid -- Lyreshead Lizard
  Lystrophis dorbignyi chacoensis de Lema, 1994 -- invalid
  Lystrophis dorbignyi orientalis de Lema, 1994 -- invalid
  Lystrophis dorbignyi uruguayensis de Lema, 1994 -- invalid
  Lystrophis matogrossensis Scrocchi and Cruz, 1993 -- invalid
  Lytorhynchus diadema (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Crowned Leafnose Snake, Awl-headed Snake, Diademed Sand Snake
  Lytorhynchus diadema arabicus Haas, 1952 -- valid
  Lytorhynchus diadema diadema (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid
  Lytorhynchus diadema gaddi Nikolsky, 1907 -- valid
  Lytorhynchus diadema mesopotamicus Haas, 1952 -- valid
  Lytorhynchus gaddi Nikolsky, 1907 -- invalid
  Lytorhynchus gasperetti Leviton, 1977 -- valid -- Leviton's Leafnose Snake
  Lytorhynchus kennedyi Schmidt, 1939 -- valid -- Kennedy's Leafnose Snake
  Lytorhynchus levitoni Torki, 2017 -- valid
  Lytorhynchus maynardi Alcock and Finn, 1897 -- valid -- Maynard's Longnose Sand Snake
  Lytorhynchus paradoxus (Günther, 1875) -- valid -- Sindh Awl-headed Snake, Sind Longnose Sand Snake
  Lytorhynchus ridgewayi Boulenger, 1887 -- valid -- Derafshi Snake
  Lytorhynchus sinai Schmidt and Marx, 1956 -- invalid
  Macrelaps microlepidotus (Günther, 1860) -- valid -- Natal Black Snake
  Macrocalamus Günther, 1864 -- valid
  Macrocalamus chanardi David and Pauwels, 2005 -- valid
  Macrocalamus gentingensis Yaakob and Lim, 2002 -- valid
  Macrocalamus jasoni Grandison, 1972 -- valid -- Jason's Mountain Reed Snake
  Macrocalamus lateralis Günther, 1864 -- valid -- Malayan Mountain Reed Snake, Striped Reedsnake
  Macrocalamus schulzi Vogel and David, 1999 -- valid
  Macrocalamus tweediei Lim, 1963 -- valid -- Tweedie's Mountain Reed Snake
  Macrocalamus vogeli David and Pauwels, 2005 -- valid
  Macrophis ornatus Bocage, 1866 -- invalid
  Macropisthodon Boulenger, 1893 -- valid
  Macropisthodon flaviceps (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Yellow-headed Keelback, Orangeneck Keelback
  Macropisthodon plumbicolor (Cantor, 1839) -- valid -- Lead Keelback, Green Keelback
  Macropisthodon plumbicolor palabriya Deraniyagala, 1955 -- valid
  Macropisthodon plumbicolor plumbicolor (Cantor, 1839) -- valid
  Macropisthodon rhodomelas (H. Boie in F. Boie, 1827) -- valid -- Blueneck Keelback
  Macropisthodon rudis Boulenger, 1906 -- valid -- Red Keelback, False Habu
  Macropisthodon rudis multiprefrontalis Zhao and Jiang, 1981 -- valid
  Macropisthodon rudis rudis Boulenger, 1906 -- valid
  Macroprotodon abubakeri Wade, 2001 -- valid
  Macroprotodon brevis (Günther, 1862) -- valid -- Western False Smooth Snake, Iberian False Smooth Snake
  Macroprotodon brevis brevis (Günther, 1862) -- valid
  Macroprotodon brevis ibericus Busack and McCoy, 1990 -- valid
  Macroprotodon cucullatus (Geoffroy de St-Hilaire, 1827) -- valid -- False Smooth Snake
  Macroprotodon cucullatus ibericus Busack and McCoy, 1990 -- invalid
  Macroprotodon mauritanicus Guichenot, 1850 -- valid
  Macrovipera lebetina (Linnaeus, 1758) -- valid -- Levantine Viper
  Macrovipera lebetina chernovi (Chikin and Szczerbak, 1992) -- valid
  Macrovipera lebetina lebetina (Linnaeus, 1758) -- valid
  Macrovipera lebetina obtusa (Dwigubsky, 1832) -- valid
  Macrovipera lebetina transmediterranea (Nilson and Andrén, 1988) -- valid
  Macrovipera lebetina turanica (Chernov, 1940) -- valid
  Macrovipera schweizeri (Werner, 1935) -- valid
  Madagascarophis colubrinus (Schlegel, 1837) -- valid
  Madagascarophis colubrinus citrinus (Boettger, 1877) -- valid
  Madagascarophis colubrinus colubrinus (Schlegel, 1837) -- valid
  Madagascarophis colubrinus occidentalis Domergue, 1987 -- valid
  Madagascarophis colubrinus pastoriensis Domergue, 1987 -- valid
  Madagascarophis colubrinus septentrionalis Domergue, 1987 -- valid
  Madagascarophis fuchsi Glaw, Kucharzewski, Köhler, Vences and Nagy, 2013 -- valid
  Madagascarophis lolo Ruane, Burbrink, Randriamahatantsoa and Raxworthy, 2016 -- valid
  Madagascarophis meridionalis Domergue, 1987 -- valid
  Madagascarophis ocellatus Domergue, 1987 -- valid
  Magliophis exiguum (Cope, 1863) -- valid -- Ground Snake, Puerto Rican Garden Snake
  Magliophis exiguum exiguum (Cope, 1863) -- valid
  Magliophis exiguum subspadix (Schwartz, 1967) -- valid
  Magliophis stahli (Stejneger, 1904) -- valid
  Malayodracon Denzer, Manthey, Mahlow and Böhme, 2015 -- valid
  Malayodracon robinsonii (Boulenger, 1908) -- valid -- Robinson's Forest Dragon
  Malpolon insignitus (Geoffroy de St-Hilaire, 1809) -- valid -- Eastern Montpellier Snake
  Malpolon insignitus fuscus (Fleischmann, 1831) -- valid
  Malpolon insignitus insignitus (Geoffroy de St-Hilaire, 1809) -- valid
  Malpolon monspessulanus (Hermann, 1804) -- valid -- Montpellier Snake
  Malpolon monspessulanus monspessulanus (Hermann, 1804) -- valid
  Malpolon monspessulanus saharatlanticus Geniez, Cluchier and de Haan, 2006 -- valid
  Manolepis putnami (Jan, 1863) -- valid -- Culebra cabeza surcada, Ridgehead Snake
  Mantheyus Ananjeva and Stuart, 2001 -- valid
  Mantheyus phuwuanensis (Manthey and Nabhitabhata, 1991) -- valid -- Phuwua Rock Agama
  Masticophis bilineatus slevini Lowe and Norris, 1955 -- invalid
  Masticophis flagellum variolosus H. M. Smith, 1943 -- invalid
  Masticophis melanolomus Cope, 1868 -- invalid
  Masticophis pulcherrimus Cope, 1874 -- invalid
  Masticophis pulchriceps Cope, 1868 -- invalid
  Masticophis spinalis Peters, 1866 -- invalid
  Mastigodryas alternatus (Bocourt, 1884) -- valid
  Mastigodryas amarali (Stuart, 1938) -- valid -- Amaral's Tropical Racer
  Mastigodryas bifossatus (Raddi, 1820) -- valid -- Rio Tropical Racer
  Mastigodryas bifossatus bifossatus (Raddi, 1820) -- valid
  Mastigodryas bifossatus striatus (Amaral, 1931) -- valid
  Mastigodryas bifossatus triseriatus (Amaral, 1931) -- valid
  Mastigodryas boddaerti (Sentzen, 1796) -- valid -- Boddaert's Tropical Racer
  Mastigodryas boddaerti boddaerti (Sentzen, 1796) -- valid
  Mastigodryas boddaerti dunni (Stuart, 1933) -- valid
  Mastigodryas boddaerti ruthveni (Stuart, 1933) -- valid
  Mastigodryas bruesi (Barbour, 1914) -- valid -- Barbour's Tropical Racer
  Mastigodryas cliftoni (Hardy, 1964) -- valid -- Culebra-lagartijera de Clifton, Clifton's Lizard Eater
  Mastigodryas danieli Amaral, 1935 -- valid -- Daniel's Tropical Racer
  Mastigodryas dorsalis (Bocourt, 1890) -- valid -- Striped Lizard Eater
  Mastigodryas heathii (Cope, 1876) -- valid -- Heath's Tropical Racer
  Mastigodryas melanolomus (Cope, 1868) -- valid -- Culebra-lagartijera común, Salmon-bellied Racer
  Mastigodryas melanolomus alternatus (Bocourt, 1884) -- invalid
  Mastigodryas melanolomus laevis (Fischer, 1881) -- valid
  Mastigodryas melanolomus melanolomus (Cope, 1868) -- valid
  Mastigodryas melanolomus slevini (Stuart, 1933) -- valid
  Mastigodryas melanolomus stuarti (H. M. Smith, 1943) -- valid
  Mastigodryas melanolomus tehuanae (H. M. Smith, 1943) -- valid
  Mastigodryas melanolomus veraecrucis Stuart, 1941 -- valid
  Mastigodryas moratoi Montingelli and Zaher, 2011 -- valid
  Mastigodryas pleei (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Plee's Tropical Racer
  Mastigodryas pulchriceps (Cope, 1868) -- valid -- Cope's Tropical Racer
  Mastigodryas reticulatus (Peters, 1863) -- valid
  Maticora lineata Gray in Gray and Hardwicke, 1835 -- invalid
  Megaera flavomaculatus Gray, 1842 -- invalid
  Megalops maculatus Hallowell, 1861 -- invalid
  Mehelya egbensis Dunger, 1966 -- invalid
  Mehelya gabouensis Trape and Mané, 2005 -- invalid
  Mehelya laurenti de Witte, 1959 -- invalid
  Mehelya vernayi Bogert, 1940 -- invalid
  Meizodon coronatus (Schlegel, 1837) -- valid -- Western Crowned Snake
  Meizodon krameri Schätti, 1985 -- valid -- Tana Delta Smooth Snake
  Meizodon plumbiceps (Boettger, 1893) -- valid -- Black-headed Smooth Snake
  Meizodon regularis Fischer, 1856 -- valid -- Eastern Crowned Smooth Snake
  Meizodon semiornatus (Peters, 1854) -- valid -- Semiornate Smooth Snake
  Meizodon semiornatus semiornatus (Peters, 1854) -- valid
  Meizodon semiornatus tchadensis (Chabanaud, 1917) -- valid
  Melwardia minima Worrell, 1960 -- invalid
  Mesopeltis longifrenis Stejneger, 1909 -- invalid
  Mesopeltis sanniolus Cope, 1866 -- invalid
  Michaela pernasuta Werner, 1915 -- invalid
  Micrelaps bicoloratus Sternfeld, 1908 -- valid -- Kenya Two-headed Snake
  Micrelaps bicoloratus bicoloratus Sternfeld, 1908 -- valid
  Micrelaps bicoloratus moyeri Rasmussen, 2002 -- valid
  Micrelaps muelleri Boettger, 1880 -- valid
  Micrelaps tchernovi Werner, Babocsay, Carmely and Thuna, 2006 -- valid -- Tchernov's Chainling
  Micrelaps vaillanti (Mocquard, 1888) -- valid -- Black-headed Micrelaps, Somali Two-headed Snake
  Microlophus A. M. C. Duméril and Bibron, 1837 -- valid
  Microlophus albemarlensis (Baur, 1890) -- valid -- Galapagos Lava Lizard
  Microlophus atacamensis (Donoso-Barros, 1960) -- valid -- Atacamen Pacific Iguana
  Microlophus barringtonensis (Baur, 1892) -- valid -- Galapagos Lava Lizard
  Microlophus bivittatus (W. C. H. Peters, 1871) -- valid -- San Cristobal Lava Lizard
  Microlophus delanonis (Baur, 1890) -- valid -- Hood Lava Lizard
  Microlophus duncanensis (Baur, 1890) -- valid
  Microlophus grayii (Bell, 1843) -- valid -- Floreana Lava Lizard
  Microlophus habelii (Steindachner, 1876) -- valid
  Microlophus heterolepis (Wiegmann, 1834) -- valid
  Microlophus indefatigabilis (Baur, 1890) -- valid -- Galapagos Lava Lizard
  Microlophus jacobii (Baur, 1892) -- valid -- Santiago Lava Lizard
  Microlophus koepckeorum (Mertens, 1956) -- valid
  Microlophus occipitalis (W. C. H. Peters, 1871) -- valid -- Knobbed Pacific Iguana
  Microlophus pacificus (Steindachner, 1876) -- valid -- Common Pacific Iguana
  Microlophus peruvianus (Lesson, 1830) -- valid -- Peru Pacific Iguana
  Microlophus peruvianus peruvianus (Lesson, 1830) -- valid
  Microlophus peruvianus salinicola (Mertens, 1956) -- valid
  Microlophus quadrivittatus (Tschudi, 1845) -- valid -- Four-banded Pacific Iguana
  Microlophus stolzmanni (Steindachner, 1891) -- valid
  Microlophus tarapacensis (Donoso-Barros, 1966) -- valid -- Tarapaca Pacific Iguana
  Microlophus theresiae (Steindachner, 1901) -- valid -- Theresia's Pacific Iguana
  Microlophus theresioides (Donoso-Barros, 1966) -- valid
  Microlophus thoracicus (Tschudi, 1845) -- valid -- Tschudi's Pacific Iguana
  Microlophus thoracicus icae Dixon and Wright, 1975 -- valid
  Microlophus thoracicus talarae Dixon and Wright, 1975 -- valid
  Microlophus thoracicus thoracicus (Tschudi, 1845) -- valid
  Microlophus tigris (Tschudi, 1845) -- valid -- Tiger Pacific Iguana
  Microlophus yanezi (Ortiz-Zapata, 1980) -- valid
  Micropechis ikaheca (Lesson in Duperrey, 1829) -- valid -- New Guinea Small-eyed Snake, Ikaheka Snake
  Micropechis ikaheca fasciatus (Fischer, 1884) -- valid
  Micropechis ikaheca ikaheca (Lesson in Duperrey, 1829) -- valid
  Micropisthodon ochraceus Mocquard, 1894 -- valid
  Microps lineatus Hallowell, 1856 -- invalid
  Microsoma collare Peters, 1881 -- invalid
  Microsoma fulvicollis Mocquard, 1887 -- invalid
  Microsoma neuwiedi Jan, 1858 -- invalid
  Microsoma notatum Peters, 1882 -- invalid
  Micruroides euryxanthus (Kennicott, 1860) -- valid -- Sonoran Coralsnake, Serpiente-coralillo sonorense, Western Coral Snake
  Micruroides euryxanthus australis Zweifel and Norris, 1955 -- valid
  Micruroides euryxanthus euryxanthus (Kennicott, 1860) -- valid -- Arizona Coral Snake, Arizona Coralsnake
  Micruroides euryxanthus neglectus Roze, 1967 -- valid
  Micrurus albicinctus Amaral, 1925 -- valid -- White-banded Coral Snake
  Micrurus alleni K. P. Schmidt, 1936 -- valid -- Allen's Coral Snake
  Micrurus altirostris (Cope, 1860) -- valid
  Micrurus ancoralis (Jan in Jan and Sordelli, 1872) -- valid -- Regal Coral Snake
  Micrurus ancoralis ancoralis (Jan in Jan and Sordelli, 1872) -- valid
  Micrurus ancoralis jani K. P. Schmidt, 1936 -- valid
  Micrurus annellatus (W. C. H. Peters, 1871) -- valid -- Annellated Coral Snake
  Micrurus annellatus annellatus (W. C. H. Peters, 1871) -- valid
  Micrurus annellatus balzanii (Boulenger, 1898) -- invalid
  Micrurus annellatus bolivianus Roze, 1967 -- valid
  Micrurus antioquiensis K. P. Schmidt, 1936 -- invalid
  Micrurus averyi K. P. Schmidt, 1939 -- valid -- Black-headed Coral Snake
  Micrurus baliocoryphus (Cope, 1860) -- valid
  Micrurus bernadi (Cope, 1887) -- valid -- Saddled Coral Snake, Blotched Coral Snake
  Micrurus bocourti (Jan in Jan and Sordelli, 1872) -- valid -- False Triad Coral Snake, Ecuador Coral Snake
  Micrurus bogerti Roze, 1967 -- valid -- Serpiente-coralillo de Bogert, Bogert's Coral Snake
  Micrurus brasiliensis Roze, 1967 -- valid
  Micrurus browni K. P. Schmidt and H. M. Smith, 1943 -- valid -- Serpiente-coralillo de Brown, Brown's Coral Snake
  Micrurus browni browni K. P. Schmidt and H. M. Smith, 1943 -- valid
  Micrurus browni importunus Roze, 1967 -- valid
  Micrurus browni taylori K. P. Schmidt and H. M. Smith, 1943 -- valid
  Micrurus camilae Renjifo and Lundberg, 2003 -- valid
  Micrurus carinicauda K. P. Schmidt, 1936 -- invalid
  Micrurus catamayensis Roze, 1989 -- valid -- Catamayo Coral Snake
  Micrurus circinalis (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Trinidad Northern Coral Snake
  Micrurus clarki K. P. Schmidt, 1936 -- valid -- Clark's Coral Snake
  Micrurus collaris (Schlegel, 1837) -- valid -- Guyana Blackback Coral Snake
  Micrurus collaris breviventris (Roze and Bernal-Carlo, 1987) -- valid
  Micrurus collaris collaris (Schlegel, 1837) -- valid
  Micrurus corallinus (Merrem, 1820) -- valid -- Painted Coral Snake
  Micrurus decoratus (Jan, 1858) -- valid -- Brazilian Coral Snake
  Micrurus diana Roze, 1983 -- valid -- Diana's Coral Snake
  Micrurus diastema (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Serpiente-coralillo variable, Variable Coral Snake, Diastema Coral Snake
  Micrurus diastema affinis (Jan, 1858) -- valid
  Micrurus diastema aglaeope (Cope, 1860) -- valid
  Micrurus diastema alienus (Werner, 1903) -- valid
  Micrurus diastema apiatus (Jan, 1858) -- valid
  Micrurus diastema diastema (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid
  Micrurus diastema macdougalli Roze, 1967 -- valid
  Micrurus diastema proximans H. M. Smith and Chrapliwy, 1958 -- invalid
  Micrurus diastema sapperi (Werner, 1903) -- valid
  Micrurus dissoleucus (Cope, 1860) -- valid -- Pigmy Coral Snake
  Micrurus dissoleucus dissoleucus (Cope, 1860) -- valid
  Micrurus dissoleucus dunni Barbour, 1923 -- valid
  Micrurus dissoleucus melanogenys (Cope, 1860) -- valid
  Micrurus dissoleucus meridensis Roze, 1989 -- invalid
  Micrurus dissoleucus nigrirostris K. P. Schmidt, 1955 -- valid
  Micrurus distans (Kennicott, 1860) -- valid -- Serpiente-coralillo del oeste mexicano, West Mexican Coral Snake
  Micrurus distans distans (Kennicott, 1860) -- valid
  Micrurus distans michoacanensis (Dugès, 1891) -- valid
  Micrurus distans oliveri Roze, 1967 -- valid
  Micrurus distans zweifeli Roze, 1967 -- valid
  Micrurus dumerilii (Jan, 1858) -- valid
  Micrurus dumerilii antioquiensis K. P. Schmidt, 1936 -- valid
  Micrurus dumerilii carinicauda K. P. Schmidt, 1936 -- valid
  Micrurus dumerilii colombianus (Griffin, 1916) -- valid
  Micrurus dumerilii dumerilii (Jan, 1858) -- valid
  Micrurus dumerilii transandinus K. P. Schmidt, 1936 -- valid
  Micrurus dumerilii venezuelensis Roze, 1989 -- valid
  Micrurus dunni Barbour, 1923 -- invalid
  Micrurus ecuadorianus sangilensis Nicéforo-María, 1942 -- invalid
  Micrurus elegans (Jan, 1858) -- valid -- Serpiente-coralillo elegante, Elegant Coral Snake
  Micrurus elegans elegans (Jan, 1858) -- valid
  Micrurus elegans veraepacis K. P. Schmidt, 1933 -- valid
  Micrurus ephippifer (Cope, 1886) -- valid -- Serpiente-coralillo oaxaqueña, Oaxacan Coral Snake
  Micrurus ephippifer ephippifer (Cope, 1886) -- valid
  Micrurus ephippifer zapotectus Roze, 1989 -- valid
  Micrurus filiformis (Günther, 1859) -- valid -- Slender Coral Snake
  Micrurus frontalis (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Southern Coral Snake
  Micrurus frontalis brasiliensis Roze, 1967 -- invalid
  Micrurus frontalis diana Roze, 1983 -- invalid
  Micrurus fulvius (Linnaeus, 1766) -- valid -- Northern Coral Snake, Harlequin Coralsnake, Serpiente-coralillo arlequín, Eastern Coral Snake
  Micrurus fulvius maculatus Roze, 1967 -- invalid
  Micrurus helleri K. P. Schmidt and F. J. W. Schmidt, 1925 -- invalid
  Micrurus hemprichii (Jan, 1858) -- valid -- Hemprich's Coral Snake
  Micrurus hemprichii hemprichii (Jan, 1858) -- valid
  Micrurus hemprichii ortoni K. P. Schmidt, 1953 -- valid
  Micrurus hippocrepis (W. C. H. Peters, 1862) -- valid -- Mayan Coral Snake
  Micrurus ibiboboca (Merrem, 1820) -- valid -- Caatinga Coral Snake
  Micrurus isozonus (Cope, 1860) -- valid -- Venezuela Coral Snake
  Micrurus isozonus isozonus (Cope, 1860) -- valid
  Micrurus isozonus sandneri Arenas-Vargas, 2015 -- valid
  Micrurus langsdorffi (Wagler, 1824) -- valid -- Langsdorff's Coral Snake
  Micrurus laticollaris (W. C. H. Peters, 1870) -- valid -- Serpiente-coralillo del Balsas, Balsas Coral Snake
  Micrurus laticollaris laticollaris (W. C. H. Peters, 1870) -- valid
  Micrurus laticollaris maculirostris Roze, 1967 -- valid
  Micrurus latifasciatus K. P. Schmidt, 1933 -- valid -- Serpiente-coralillo franjas anchas, Broad-ringed Coral Snake
  Micrurus lemniscatus (Linnaeus, 1758) -- valid -- South American Coral Snake
  Micrurus lemniscatus carvalhoi Roze, 1967 -- valid
  Micrurus lemniscatus diutius Burger, 1955 -- valid
  Micrurus lemniscatus frontifasciatus (Werner, 1927) -- valid
  Micrurus lemniscatus helleri K. P. Schmidt and F. J. W. Schmidt, 1925 -- valid
  Micrurus lemniscatus lemniscatus (Linnaeus, 1758) -- valid
  Micrurus limbatus Fraser, 1964 -- valid -- Serpiente-coralillo de Los Tuxtlas, Tuxtlan Coral Snake
  Micrurus limbatus limbatus Fraser, 1964 -- valid
  Micrurus limbatus spilosomus Pérez-Higareda and H. M. Smith, 1990 -- valid
  Micrurus margaritifer Roze, 1967 -- valid -- Speckled Coral Snake
  Micrurus margaritiferus Roze, 1967 -- invalid -- Speckled Coral Snake
  Micrurus medemi Roze, 1967 -- valid
  Micrurus meridensis Roze, 1989 -- valid -- Merida Coral Snake
  Micrurus mertensi K. P. Schmidt, 1936 -- valid -- Mertens' Coral Snake
  Micrurus mipartitus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Redtail Coral Snake
  Micrurus mipartitus anomalus (Boulenger, 1896) -- valid
  Micrurus mipartitus decussatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid
  Micrurus mipartitus mipartitus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid
  Micrurus mipartitus popayensis Ayerbe, M. A. Tidwell and M. Tidwell, 1990 -- valid
  Micrurus mipartitus rozei Golay, Chiszar, H. M. Smith and Breukelen, 1999 -- valid
  Micrurus mosquitensis K. P. Schmidt, 1933 -- valid
  Micrurus multifasciatus (Jan, 1858) -- valid -- Many-banded Coral Snake
  Micrurus multifasciatus hertwigi (Werner, 1896) -- valid
  Micrurus multifasciatus multifasciatus (Jan, 1858) -- valid
  Micrurus multiscutatus Rendahl and Vestergreen, 1940 -- valid -- Cauca Coral Snake
  Micrurus narduccii (Jan, 1863) -- valid -- Andean Blackback Coral Snake
  Micrurus narduccii melanotus (W. C. H. Peters, 1881) -- valid
  Micrurus narduccii narduccii (Jan, 1863) -- valid
  Micrurus nattereri K. P. Schmidt, 1952 -- valid -- Natterer's Coral Snake
  Micrurus nebularis Roze, 1989 -- valid -- Serpiente-coralillo de niebla, Cloud Forest Coral Snake
  Micrurus nigricinctus alleni K. P. Schmidt, 1936 -- invalid
  Micrurus nigrocinctus (Girard, 1854) -- valid -- Serpiente-coralillo centroamericana, Central American Coral Snake
  Micrurus nigrocinctus babaspul Roze, 1967 -- valid
  Micrurus nigrocinctus coibensis K. P. Schmidt, 1936 -- valid
  Micrurus nigrocinctus divaricatus (Hallowell, 1855) -- valid
  Micrurus nigrocinctus mosquitensis K. P. Schmidt, 1933 -- invalid
  Micrurus nigrocinctus nigrocinctus (Girard, 1854) -- valid
  Micrurus nigrocinctus ovandoensis K. P. Schmidt and H. M. Smith, 1943 -- valid
  Micrurus nigrocinctus wagneri Mertens, 1941 -- valid
  Micrurus nigrocinctus zunilensis K. P. Schmidt, 1932 -- valid
  Micrurus nuchalis taylori K. P. Schmidt and H. M. Smith, 1943 -- invalid
  Micrurus obscurus (Jan in Jan and Sordelli, 1872) -- valid -- Bolivian Coral Snake
  Micrurus oligoanellatus Ayerbe González and López López, 2002 -- valid -- Tambito's Coral Snake
  Micrurus olssoni K. P. Schmidt and F. J. W. Schmidt, 1925 -- invalid
  Micrurus ornatissimus (Jan, 1858) -- valid -- Ornate Coralsnake
  Micrurus pacaraimae Morato de Carvalho, 2002 -- valid
  Micrurus pachecogili Campbell, 2000 -- valid
  Micrurus paraensis Cunha and Nascimento, 1973 -- valid
  Micrurus peruvianus K. P. Schmidt, 1936 -- valid -- Peru Coral Snake
  Micrurus petersi Roze, 1967 -- valid -- Peters' Coral Snake
  Micrurus potyguara Pires, da Silva Jr., Feitosa, da Costa-Prudente, Preir-Filho and Zaher, 2014 -- valid
  Micrurus proximans H. M. Smith and Chrapliwy, 1958 -- valid -- Serpiente-coralillo nayarita, Nayarit Coral Snake
  Micrurus psiches paraensis Cunha and Nascimento, 1973 -- invalid
  Micrurus psyches (Daudin, 1803) -- valid -- Carib Coral Snake
  Micrurus psyches medemi Roze, 1967 -- invalid
  Micrurus psyches remotus Roze, 1987 -- invalid
  Micrurus putumayensis Lancini, 1962 -- valid -- Putumayo Coral Snake
  Micrurus pyrrhocryptus (Cope, 1862) -- valid
  Micrurus remotus Roze, 1987 -- valid
  Micrurus renjifoi (Lamar, 2003) -- valid
  Micrurus ruatanus (Günther, 1895) -- valid -- Roatan Coral Snake
  Micrurus sangilensis Nicéforo-María, 1942 -- valid -- Santander Coral Snake
  Micrurus scutiventris (Cope, 1870) -- valid -- Pigmy Black-backed Coralsnake
  Micrurus serranus Harvey, Aparicio and González, 2003 -- valid
  Micrurus silviae Di Bernardo, Borges-Martins and Da Silva, 2007 -- valid
  Micrurus spixii Wagler, 1824 -- valid -- Amazon Coral Snake
  Micrurus spixii martiusi K. P. Schmidt, 1953 -- valid
  Micrurus spixii spixii Wagler, 1824 -- valid
  Micrurus spurelli (Boulenger, 1914) -- invalid
  Micrurus spurrelli (Boulenger, 1914) -- valid
  Micrurus steindachneri (Werner, 1901) -- valid -- Steindachner's Coral Snake
  Micrurus steindachneri orcesi Roze, 1967 -- valid
  Micrurus steindachneri petersi Roze, 1967 -- invalid
  Micrurus steindachneri steindachneri (Werner, 1901) -- valid
  Micrurus stewarti Barbour and Amaral, 1928 -- valid -- Panamenian Coral Snake
  Micrurus stuarti Roze, 1967 -- valid -- Stuart's Coral Snake
  Micrurus surinamensis (Cuvier, 1817) -- valid -- Aquatic Coral Snake
  Micrurus tamaulipensis Lavin-Murcio and Dixon, 2004 -- invalid
  Micrurus tener (Baird and Girard, 1853) -- valid -- Texas Coralsnake, Texas Coral Snake
  Micrurus tener fitzingeri (Jan, 1858) -- valid
  Micrurus tener maculatus Roze, 1967 -- valid
  Micrurus tener microgalbieneus Brown and H. M. Smith, 1942 -- valid
  Micrurus tener tamaulipensis Lavin-Murcio and Dixon, 2004 -- valid
  Micrurus tener tener (Baird and Girard, 1853) -- valid -- Texas Gulf-Coast Coralsnake
  Micrurus tikuna Feitosa, da Silve Jr., Pires, Zaher and Costa-Prudente, 2015 -- valid
  Micrurus transandinus K. P. Schmidt, 1936 -- invalid
  Micrurus tschudii (Jan, 1858) -- valid -- Desert Coral Snake
  Micrurus tschudii olssoni K. P. Schmidt and F. J. W. Schmidt, 1925 -- valid
  Micrurus tschudii tschudii (Jan, 1858) -- valid
  Migiurtinophis pulcher Scortecci, 1935 -- invalid
  Mimometopon sapperi Werner, 1903 -- invalid
  Mimophis madagascariensis Günther, 1868 -- invalid
  Mimophis mahfalensis (Grandidier, 1867) -- valid
  Mimophis mahfalensis madagascariensis Günther, 1868 -- valid
  Mimophis mahfalensis mahfalensis (Grandidier, 1867) -- valid
  Miodon christyi Boulenger, 1903 -- invalid
  Miodon collaris brevior de Witte and Laurent, 1947 -- invalid
  Miodon collaris longior de Witte and Laurent, 1947 -- invalid
  Miodon gabonensis schmidti de Witte and Laurent, 1947 -- invalid
  Miodon gracilis de Witte and Laurent, 1943 -- invalid
  Miodon graueri Sternfeld, 1908 -- invalid
  Miodon griseiceps Laurent, 1947 -- invalid
  Miodon robustus de Witte and Laurent, 1943 -- invalid
  Mixcoatlus barbouri (Dunn, 1919) -- valid -- Nauyaca-de montaña guerrerense, Barbour's Montane Pitviper
  Mixcoatlus browni (Shreve, 1938) -- valid -- Brown's Montane Pitviper
  Mixcoatlus melanurus (Müller, 1924) -- valid -- Black-tailed Horned Pitviper, Nauyaca-nariz de cerdo cornuda
  Mizodon variegatus Peters, 1861 -- invalid
  Moloch horridus Gray, 1841 -- valid -- Thorny Devil
  Montaspis gilvomaculata Bourquin, 1991 -- valid -- Cream-spotted Mountain Snake
  Montatheris hindii (Boulenger, 1910) -- valid -- Kenya Montane Viper
  Montivipera albizona (Nilson, Andrén and Flärdh, 1990) -- valid
  Montivipera bornmuelleri (Werner, 1898) -- valid -- Lebanon Viper
  Montivipera bulgardaghica (Nilson and Andrén, 1985) -- valid
  Montivipera kuhrangica Rajabizadeh, Nilson and Kami, 2011 -- valid -- Kuhrang Mountain Viper
  Montivipera latifii (Mertens, Darewsky and Klemmer, 1967) -- valid -- Lar Valley Viper
  Montivipera raddei (Boettger, 1890) -- valid -- Caucasus Viper
  Montivipera raddei kurdistanica (Nilson and Andrén, 1986) -- valid
  Montivipera raddei raddei (Boettger, 1890) -- valid
  Montivipera wagneri (Nilson and Andrén, 1984) -- valid -- Wagner's Viper
  Montivipera xanthina (Gray, 1849) -- valid -- Coastal Viper, Ottoman Viper
  Mopanveldophis zebrinus (Broadley and Schätti, 2000) -- valid
  Morenoa orizabensis Dugès, 1905 -- invalid
  Morunasaurus Dunn, 1933 -- valid
  Morunasaurus annularis (O'Shaughnessy, 1881) -- valid -- Ringed Manticore, Ringed Spinytail Iguana
  Morunasaurus groi Dunn, 1933 -- valid -- Dunn's Spinytail Iguana, Gro's Manticore
  Morunasaurus peruvianus G. Köhler, 2003 -- valid -- Cenepa Manticores
  Muhtarophis barani (Olgun, Avci, Ilgaz, Üzüm and Yilmaz, 2007) -- valid -- Baran's Dwarf Snake
  Mussurana bicolor (Peracca, 1904) -- valid -- Two-colored Mussurana
  Mussurana montana (Franco, Marques and Puorto, 1997) -- valid
  Mussurana quimi (Franco, Marques and Puorto, 1997) -- valid
  Myersophis alpestris Taylor, 1963 -- valid
  Myron trivittatus Gray, 1849 -- invalid
  Nadzikambia baylissi Branch and Tolley, 2010 -- valid
  Nadzikambia mlanjensis (Broadley, 1965) -- valid
  Naia goldii Boulenger, 1895 -- invalid
  Naia multifasciata Werner, 1902 -- invalid
  Naja anchietae Bocage, 1879 -- valid -- Anchieta's Cobra
  Naja angusticeps A. Smith, 1849 -- invalid
  Naja annulata Buchholz and Peters in Peters, 1876 -- valid -- Ringed Water Cobra
  Naja annulata annulata Buchholz and Peters in Peters, 1876 -- valid
  Naja annulata stormsi (Dollo, 1886) -- valid
  Naja annulifera W. C. H. Peters, 1854 -- valid -- Snouted Cobra, Banded Cobra
  Naja anomala Sternfeld, 1917 -- invalid
  Naja arabica Scortecci, 1932 -- valid
  Naja ashei Wüster and Broadley, 2007 -- valid -- Ashe's Spitting Cobra
  Naja atra Cantor, 1842 -- valid -- Chinese Cobra
  Naja australis Gray, 1842 -- invalid
  Naja bungaroides Schlegel, 1837 -- invalid
  Naja bungaroides H. Boie in Schlegel, 1828 -- invalid
  Naja christyi (Boulenger, 1904) -- valid -- Christy's Water Cobra
  Naja curta Schlegel, 1837 -- invalid
  Naja fulafula Bianconi, 1849 -- invalid
  Naja haje (Linnaeus, 1758) -- valid -- Egyptian Cobra
  Naja haje annulifera W. C. H. Peters, 1854 -- invalid
  Naja haje arabica Scortecci, 1932 -- invalid
  Naja haje haje (Linnaeus, 1758) -- invalid
  Naja haje legionis Valverde, 1989 -- invalid
  Naja haje melanoleuca Hallowell, 1857 -- invalid
  Naja kaouthia Lesson in Ferussac, 1831 -- valid -- Monocled Cobra, Monocellate Cibra
  Naja katiensis Angel, 1922 -- valid -- Katian Spitting Cobra, Mali Cobra
  Naja mandalayensis Slowinski and Wüster, 2000 -- valid
  Naja melanoleuca Hallowell, 1857 -- valid -- Forest Cobra, Black and White Cobra
  Naja morgani Mocquard, 1905 -- invalid
  Naja mossambica W. C. H. Peters, 1854 -- valid -- Mozambique Spitting Cobra
  Naja multifasciata Werner, 1902 -- valid -- Many-banded Snake
  Naja multifasciata anomala Sternfeld, 1917 -- valid
  Naja multifasciata duttoni (Boulenger, 1904) -- valid
  Naja multifasciata multifasciata Werner, 1902 -- valid
  Naja naja (Linnaeus, 1758) -- valid -- Indian Cobra
  Naja naja philippinensis Taylor, 1922 -- invalid
  Naja nigricincta Bogert, 1940 -- valid -- Western Barred Spitting Cobra
  Naja nigricincta nigricincta Bogert, 1940 -- valid
  Naja nigricincta woodi Pringle, 1955 -- valid
  Naja nigricollis Reinhardt, 1843 -- valid -- Black-necked Spitting Cobra
  Naja nigricollis katiensis Angel, 1922 -- invalid
  Naja nigricollis nigricincta Bogert, 1940 -- invalid
  Naja nigricollis pallida Boulenger, 1896 -- invalid
  Naja nigricollis woodi Pringle, 1955 -- invalid
  Naja nivea (Linnaeus, 1758) -- valid -- Cape Cobra
  Naja nubiae Wüster and Broadley, 2003 -- valid -- Nubian Spitting Cobra
  Naja oxiana (Eichwald, 1831) -- valid -- Central Asian Cobra
  Naja pallida Boulenger, 1896 -- valid -- African Cobra, Red Spitting Cobra
  Naja philippinensis Taylor, 1922 -- valid -- Philippine Cobra
  Naja sagittifera Wall, 1913 -- valid -- Andaman Cobra
  Naja samarensis W. C. H. Peters, 1861 -- valid -- Peters' Cobra
  Naja scutata W. C. H. Peters, 1861 -- invalid
  Naja senegalensis Trape, Chirio and Wüster, 2009 -- valid
  Naja siamensis Laurenti, 1768 -- valid -- Indo-Chinese Spitting Cobra
  Naja sputatrix F. Boie, 1827 -- valid -- Indonesian Cobra
  Naja sumatrana F. Müller, 1887 -- valid -- Equatorial Spitting Cobra, Golden Spitting Cobra
  Naja tripudians sagittifera Wall, 1913 -- invalid
  Naja tripudians samarensis W. C. H. Peters, 1861 -- invalid
  Naja tripudians sumatrana F. Müller, 1887 -- invalid
  Natricinae Bonaparte, 1838 -- valid
  Natriciteres Loveridge, 1953 -- valid
  Natriciteres bipostocularis Broadley, 1962 -- valid -- Southwestern Forest Marsh Snake
  Natriciteres fuliginoides (Günther, 1858) -- valid -- Forest Marsh Snake, Collared Marsh-Snake
  Natriciteres olivacea (Peters, 1854) -- valid -- Olive Marsh Snake
  Natriciteres olivacea bipostocularis Broadley, 1962 -- invalid
  Natriciteres pembana (Loveridge, 1935) -- valid -- Variable Marsh Snake
  Natriciteres sylvatica Broadley, 1966 -- valid -- Forest Marsh Snake
  Natriciteres variegata (Peters, 1861) -- valid -- Variable Marsh Snake
  Natriciteres variegata sylvatica Broadley, 1966 -- invalid
  Natrix Laurenti, 1768 -- valid
  Natrix aequifasciata Barbour, 1908 -- invalid
  Natrix almadensis Wagler, 1824 -- invalid
  Natrix angelii Bourret, 1934 -- invalid
  Natrix atemporalis Bourret, 1934 -- invalid
  Natrix atra Gosse, 1851 -- invalid
  Natrix barbouri Taylor, 1922 -- invalid
  Natrix bitaeniata Wall, 1925 -- invalid
  Natrix boulengeri Gressitt, 1937 -- invalid
  Natrix callilaema Gosse, 1851 -- invalid
  Natrix cetti Gené, 1838 -- invalid
  Natrix chrysarga callichroma Bourret, 1934 -- invalid
  Natrix clerki Wall, 1925 -- invalid
  Natrix dendrophiops negrosensis Taylor, 1917 -- invalid
  Natrix deschauenseei Taylor, 1934 -- invalid
  Natrix fasciata confluens Blanchard, 1923 -- invalid
  Natrix fasciata pictiventris Cope, 1895 -- invalid
  Natrix frenata Dunn, 1923 -- invalid
  Natrix gemonensis Laurenti, 1768 -- invalid
  Natrix groundwateri M. A. Smith, 1922 -- invalid
  Natrix helleri Schmidt, 1925 -- invalid
  Natrix laevissima Günther, 1862 -- invalid
  Natrix leonardi Wall, 1923 -- invalid
  Natrix longissima Laurenti, 1768 -- invalid
  Natrix lubrica Laurenti, 1768 -- invalid
  Natrix mairii multiscutellata Brongersma, 1948 -- invalid
  Natrix maura (Linnaeus, 1758) -- valid -- Viperine Water Snake
  Natrix melanostigma Wagler, 1824 -- invalid
  Natrix miyajimae Maki, 1931 -- invalid
  Natrix murudensis M. A. Smith, 1925 -- invalid
  Natrix natrix (Linnaeus, 1758) -- valid -- European Grass Snake
  Natrix natrix algirus (Sochurek, 1979) -- valid
  Natrix natrix astreptophora (Seoane, 1885) -- valid
  Natrix natrix calabra Vanni and Lanza, 1983 -- valid
  Natrix natrix cetti Gené, 1838 -- valid
  Natrix natrix corsa (Hecht, 1930) -- valid
  Natrix natrix cypriaca (Hecht, 1930) -- valid
  Natrix natrix fusca Cattaneo, 1990 -- valid
  Natrix natrix gotlandica Nilson and Andrén, 1981 -- valid
  Natrix natrix helvetica (Lacépède, 1789) -- valid
  Natrix natrix lanzai Kramer, 1970 -- valid
  Natrix natrix natrix (Linnaeus, 1758) -- valid
  Natrix natrix persa (Pallas, 1814) -- valid
  Natrix natrix schweizeri L. Müller, 1932 -- valid
  Natrix natrix scutata (Pallas, 1771) -- valid
  Natrix natrix sicula (Cuvier, 1829) -- valid
  Natrix occipitalis Wied-Neuwied, 1824 -- invalid
  Natrix olivacea pembana Loveridge, 1935 -- invalid
  Natrix optata Hu and Zhao, 1966 -- invalid
  Natrix popei Schmidt, 1925 -- invalid
  Natrix rhombifera werleri Conant, 1953 -- invalid
  Natrix rigida deltae Huheey, 1959 -- invalid
  Natrix rigida sinicola Huheey, 1959 -- invalid
  Natrix sanguinea Smedley, 1931 -- invalid
  Natrix scurrula Wagler, 1824 -- invalid
  Natrix semilineata Wagler, 1824 -- invalid
  Natrix sipedon williamengelsi Conant and Lazell, 1973 -- invalid
  Natrix sulphurea Wagler, 1824 -- invalid
  Natrix suriki Maki, 1931 -- invalid
  Natrix tessellata (Laurenti, 1768) -- valid -- Dice Snake
  Natrix tigrina formosana Maki, 1931 -- invalid
  Natrix valida isabellae Conant, 1953 -- invalid
  Natrix valida thamnophisoides Conant, 1961 -- invalid
  Natrix venningi taronensis M. A. Smith, 1940 -- invalid
  Natrix vibakari ruthveni Van Denburgh, 1923 -- invalid
  Neelaps Günther, 1863 -- valid
  Neelaps bimaculatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- invalid
  Neelaps calonotus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Western Black-striped Snake, Black-striped Burrowing Snake
  Neopareas bicolor Günther, 1895 -- invalid
  Nerodia Baird and Girard, 1853 -- valid -- Water Snakes, North American Water Snakes
  Nerodia clarkii (Baird and Girard, 1853) -- valid -- Salt Marsh Water Snake, Saltmarsh Snake, Gulf salt marsh snake, Salt Marsh Snake
  Nerodia clarkii clarkii (Baird and Girard, 1853) -- valid -- Gulf Salt Marsh Snake, Gulf Saltmarsh Watersnake
  Nerodia clarkii compressicauda Kennicott, 1860 -- valid -- Mangrove Salt Marsh Snake, Mangrove Saltmarsh Watersnake
  Nerodia clarkii taeniata (Cope, 1895) -- valid -- Atlantic Salt Marsh Snake, Atlantic Saltmarsh Watersnake
  Nerodia compressicauda Kennicott, 1860 -- invalid
  Nerodia cyclopion (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Green Water Snake, Mississippi Green Water Snake, Mississippi Green Watersnake
  Nerodia erythrogaster (Forster in Bossu, 1771) -- valid -- Plain-bellied Water Snake, Culebra-de agua vientre claro, Plainbelly Water Snake, Plain-bellied Watersnake, Red-bellied Water Snake, Redbelly Water Snake
  Nerodia fasciata (Linnaeus, 1766) -- valid -- Southern Water Snake, Southern Watersnake
  Nerodia fasciata confluens (Blanchard, 1923) -- valid -- Broad-banded Water Snake, Broad-banded Watersnake
  Nerodia fasciata fasciata (Linnaeus, 1766) -- valid -- Southern Water Snake, Banded Watersnake
  Nerodia fasciata pictiventris (Cope, 1895) -- valid -- Florida Water Snake, Florida Watersnake
  Nerodia floridana (Goff, 1936) -- valid -- Florida Green Water Snake, Florida Green Watersnake
  Nerodia harteri (Trapido, 1941) -- valid -- Harter's Water Snake, Brazos River Water Snake, Brazos River Watersnake, Brazos Water Snake, Harters Water Snake
  Nerodia paucimaculata (Tinkle and Conant, 1961) -- valid -- Concho Water Snake, Concho Watersnake
  Nerodia rhombifer (Hallowell, 1852) -- valid -- Diamondback Water Snake, Culebra-de agua de diamantes, Diamond-backed Watersnake
  Nerodia rhombifer blanchardi (Clay, 1938) -- valid
  Nerodia rhombifer rhombifer (Hallowell, 1852) -- valid -- Diamondback Water Snake, Northern Diamond-backed Watersnake
  Nerodia rhombifer werleri (Conant, 1953) -- valid
  Nerodia sipedon (Linnaeus, 1758) -- valid -- Northern Water Snake, couleuvre d'eau, Common Watersnake
  Nerodia sipedon insularum (Conant and Clay, 1937) -- valid -- Lake Erie Water Snake, Lake Erie Watersnake
  Nerodia sipedon pleuralis (Cope, 1892) -- valid -- Midland Water Snake, Midland Watersnake
  Nerodia sipedon sipedon (Linnaeus, 1758) -- valid -- Northern Water Snake, Northern Watersnake
  Nerodia sipedon williamengelsi (Conant and Lazell, 1973) -- valid -- Carolina Water Snake, Carolina Watersnake
  Nerodia taxispilota (Holbrook, 1838) -- valid -- Brown Water Snake, Brown Watersnake
  Ninia atrata (Hallowell, 1845) -- valid -- Hallowell's Coffee Snake, South American Coffee Snake
  Ninia celata McCranie and Wilson, 1995 -- valid
  Ninia diademata Baird and Girard, 1853 -- valid -- Culebra-de cafetal de collar, Veracruz Ringneck Coffee Snake
  Ninia diademata diademata Baird and Girard, 1853 -- valid -- Veracruz Ringneck Coffee Snake
  Ninia diademata labiosa (Bocourt, 1883) -- valid -- Pacific Ring-necked Coffee Snake
  Ninia diademata nietoi Burger and Werler, 1954 -- valid -- Caribbean Ring-necked Coffee Snake
  Ninia diademata plorator H. M. Smith, 1942 -- valid -- Hidalgo Ring-necked Coffee Snake
  Ninia espinali McCranie and Wilson, 1995 -- valid
  Ninia franciscoi Angarita-Sierra, 2014 -- valid
  Ninia hudsoni Parker, 1940 -- valid -- Guiana Coffee Snake, Hudson's Coffee Snake
  Ninia maculata (Peters, 1861) -- valid -- Spotted Coffee Snake, Pacific Banded Coffee Snake
  Ninia pavimentata (Bocourt, 1883) -- valid -- Northern Banded Coffee Snake
  Ninia psephota (Cope, 1875) -- valid -- Red-bellied Coffee Snake, Cope's Coffee Snake
  Ninia sebae (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Culebra-de cafetal espalda roja, Redback Coffee Snake
  Ninia sebae immaculata Schmidt and Rand, 1957 -- valid
  Ninia sebae morleyi Schmidt and Andrews, 1936 -- valid
  Ninia sebae punctulata (Bocourt, 1883) -- valid
  Ninia sebae sebae (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid
  Ninia teresitae Angarita-Sierra and Lynch, 2017 -- valid
  Notechis scutatus (W. C. H. Peters, 1861) -- valid -- Mainland Tiger Snake
  Notechis scutatus occidentalis Glauert, 1948 -- valid -- Western Tiger Snake
  Notechis scutatus scutatus (W. C. H. Peters, 1861) -- valid -- Eastern Tiger Snake
  Nothopsis rugosus Cope, 1871 -- valid -- Rough Coffee Snake
  Odontomus gracilis Günther, 1864 -- invalid
  Odontomus subannulatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Ogmius acutus Cope, 1886 -- invalid
  Ogmodon vitianus W. C. H. Peters, 1864 -- valid -- Fijian Ground Snake, Bola, Fiji Cobra
  Oligodon affinis Günther, 1862 -- valid -- Kukri Snake
  Oligodon albocinctus (Cantor, 1839) -- valid -- Light-barred Kukri Snake
  Oligodon ancorus (Girard, 1858) -- valid -- Northern Short-headed Snake
  Oligodon annamensis Leviton, 1953 -- valid -- Annam Kukri Snake
  Oligodon annulifer (Boulenger, 1893) -- valid -- Ringed Kukri Snake
  Oligodon arenarius Vassilieva, 2015 -- valid
  Oligodon arnensis (Shaw, 1802) -- valid -- Russet Kukri Snake, Common Kukri Snake, Banded Kukri
  Oligodon barroni (M. A. Smith, 1916) -- valid -- Barron's Kukri Snake
  Oligodon bitorquatus F. Boie, 1827 -- valid -- Boie's Kukri Snake
  Oligodon booliati Leong and Grismer, 2004 -- valid
  Oligodon brevicauda Günther, 1862 -- valid -- Shorthead Kukri Snake
  Oligodon calamarius (Linnaeus, 1758) -- valid
  Oligodon catenatus (Blyth, 1854) -- valid -- Assam Kukri Snake
  Oligodon cattienensis Vassilieva, Geissler, Galoyan, Poyarkov Jr, Van Devender and Böhme, 2013 -- valid
  Oligodon chinensis (Günther, 1888) -- valid -- Chinese Kukri Snake
  Oligodon cinereus (Günther, 1864) -- valid -- Günther's Kukri Snake, Ashy Kukri Snake
  Oligodon condaoensis S. N. Nguyen, V. D. H. Nguyen, S. H. Le and Murphy, 2016 -- valid
  Oligodon cruentatus (Günther, 1868) -- valid -- Pegu Kukri Snake
  Oligodon cyclurus (Cantor, 1839) -- valid -- Cantor's Kukri Snake
  Oligodon deuvei David, Vogel and Van Rooijen, 2008 -- valid
  Oligodon dorsalis (Gray and Hardwicke, 1835) -- valid -- Gray's Kukri Snake, Bengalese Kukri Snake
  Oligodon eberhardti Pellegrin, 1910 -- valid -- Eberhardt's Kukri Snake
  Oligodon erythrogaster Boulenger, 1907 -- valid -- Nagarkot Kukri Snake
  Oligodon erythrorhachis Wall, 1910 -- valid -- Namsang Kukri Snake
  Oligodon everetti Boulenger, 1893 -- valid -- Everett's Kukri Snake
  Oligodon fasciatus Günther, 1864 -- invalid
  Oligodon fasciolatus (Günther, 1864) -- valid -- Fasciolated Kukri Snake
  Oligodon forbesi (Boulenger, 1883) -- valid -- Forbes' Kukri Snake
  Oligodon formosanus (Günther, 1872) -- valid -- Formosa Kukri Snake
  Oligodon hamptoni Boulenger, 1918 -- valid -- Hampton's Kukri Snake
  Oligodon herberti eberhardti Pellegrin, 1910 -- invalid
  Oligodon inornatus (Boulenger, 1914) -- valid -- Inornate Kukri Snake, Unicolored Kukri Snake
  Oligodon jintakunei Pauwels, Wallach, David and Chanhome, 2002 -- valid
  Oligodon joynsoni (M. A. Smith, 1917) -- valid -- Joynson's Kukri Snake, Gray Kukri Snake
  Oligodon juglandifer (Wall, 1909) -- valid -- Walnut Kukri Snake
  Oligodon kampucheaensis Neang, Grismer and Daltry, 2012 -- valid
  Oligodon kheriensis Acharji and Ray, 1936 -- valid -- Coral Red Kukri Snake
  Oligodon lacroixi Angel and Bourret, 1933 -- valid -- Lacroix Kukri Snake
  Oligodon lungshenensis Zheng and Huang, 1978 -- valid
  Oligodon macrurus (Angel, 1927) -- valid -- Angel's Kukri Snake
  Oligodon maculatus (Taylor, 1918) -- valid -- Spotted Kukri Snake
  Oligodon mcdougalli Wall, 1905 -- valid -- McDougall's Kukri Snake
  Oligodon melaneus Wall, 1909 -- valid -- Bluebelly Kukri Snake
  Oligodon melanozonatus Wall, 1922 -- valid -- Abor Hills Kukri Snake
  Oligodon meyerinkii (Steindachner, 1891) -- valid
  Oligodon modestus Günther, 1864 -- valid -- Luzon Kukri Snake
  Oligodon moricei David, Vogel and Van Rooijen, 2008 -- valid
  Oligodon mouhoti (Boulenger, 1914) -- valid -- Cambodian Kukri Snake, Mouhot's Kukri Snake
  Oligodon multizonatus Zhao and Jiang, 1981 -- invalid
  Oligodon nagao David, T. Q. Nguyen, T. T. Nguyen, Jiang, Chen, Teynié and Ziegler, 2012 -- valid
  Oligodon nikhili Whitaker and Dattatri, 1982 -- valid -- Nikhil's Kukri Snake
  Oligodon ningshaanensis Yuan, 1983 -- invalid
  Oligodon notospilus Günther, 1873 -- valid
  Oligodon ocellatus (Morice, 1875) -- valid -- Ocellated Kukri Snake
  Oligodon octolineatus (Schneider, 1801) -- valid -- Striped Kukri Snake, Eight-Striped Kukri Snake, Grace's Kukri Snake
  Oligodon ornatus Van Denburgh, 1909 -- valid -- Ornate Kukri Snake
  Oligodon perkinsi (Taylor, 1925) -- valid -- Perkin's Short-headed Snake
  Oligodon petronellae Rooij, 1917 -- valid
  Oligodon planiceps (Boulenger, 1888) -- valid
  Oligodon praefrontalis Werner, 1913 -- valid
  Oligodon propinquus Jan, 1862 -- valid -- Bleeker's Kukri Snake
  Oligodon pseudotaeniatus David, Vogel and Van Rooijen, 2008 -- valid
  Oligodon pulcherrimus Werner, 1909 -- valid
  Oligodon purpurascens (Schlegel, 1837) -- valid -- Brown Kukri Snake
  Oligodon saintgironsi David, Vogel and Pauwels, 2008 -- valid
  Oligodon sauteri Steindachner, 1913 -- invalid
  Oligodon signatus (Günther, 1864) -- valid -- Barred Kukri Snake, Banded Kukri Snake
  Oligodon splendidus (Günther, 1875) -- valid -- Splendid Kukri Snake
  Oligodon sublineatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Duméril's Kukri Snake
  Oligodon subpunctatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Oligodon taeniatus (Günther, 1861) -- valid -- Striped Kukri Snake
  Oligodon taeniolatus (Jerdon, 1853) -- valid -- Streaked Kukuri Snake
  Oligodon taeniolatus fasciatus Günther, 1864 -- valid
  Oligodon taeniolatus taeniolatus (Jerdon, 1853) -- valid
  Oligodon theobaldi (Günther, 1868) -- valid -- Theobald's Kukri Snake
  Oligodon torquatus (Boulenger, 1888) -- valid
  Oligodon travancoricus Beddome, 1877 -- valid -- Travancore Kukri Snake
  Oligodon trilineatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Three-lined Kukri Snake
  Oligodon unicolor (Kopstein, 1926) -- valid
  Oligodon venustus (Jerdon, 1853) -- valid -- Jerdon's Kukri Snake
  Oligodon vertebralis (Günther, 1865) -- valid -- Vertebral Kukri Snake
  Oligodon waandersi (Bleeker, 1860) -- valid -- Bleeker's Kukri Snake
  Oligodon wagneri David and Vogel, 2012 -- valid -- Wagner's Kukri Snake
  Oligodon woodmasoni (Sclater, 1891) -- valid
  Oligolepis macrops Boulenger, 1895 -- invalid
  Omoadiphas aurula Köhler, McCranie and Wilson, 2001 -- valid
  Omoadiphas cannula McCranie and Cruz-Díaz, 2010 -- valid
  Omoadiphas texiguatensis McCranie and Castaneda, 2004 -- valid
  Oocatochus rufodorsatus (Cantor, 1842) -- valid -- Red-backed Rat Snake, Frog-eating Rat Snake
  Oophilositum parkeri Angel, 1934 -- invalid
  Opheodrys aestivus (Linnaeus, 1766) -- valid -- Rough Green Snake, Rough Greensnake, Culebra-verde rugosa
  Opheodrys aestivus aestivus (Linnaeus, 1766) -- valid -- Northern Rough Greensnake
  Opheodrys aestivus carinatus Grobman, 1984 -- valid -- Florida Rough Greensnake
  Opheodrys vernalis (Harlan, 1827) -- valid -- Smooth Greensnake, Culebra-verde lisa, Smooth Green Snake
  Opheomorphus brachyurus Cope, 1887 -- invalid
  Opheomorphus doliatus caesius Cope, 1862 -- invalid
  Opheomorphus meremmii semiaureus Cope, 1862 -- invalid
  Opheomorphus mimus Cope, 1868 -- invalid
  Ophibolus alternus Brown, 1901 -- invalid
  Ophibolus getulus niger Yarrow, 1882 -- invalid
  Ophibolus splendidus Baird and Girard, 1853 -- invalid
  Ophibolus triangulus mexicanus Garman, 1884 -- invalid
  Ophiophagus hannah (Cantor, 1836) -- valid -- King Cobra, Hamadryad
  Ophiophagus ikaheka fasciatus Fischer, 1884 -- invalid
  Ophis merremii Wagler, 1824 -- invalid
  Ophites fasciatus Anderson, 1879 -- invalid
  Ophites gammiei Blanford, 1878 -- invalid
  Ophites orientalis Hilgendorf, 1880 -- invalid
  Ophites ruhstrati Fischer, 1886 -- invalid
  Ophites septentrionalis Günther, 1875 -- invalid
  Ophryacus smaragdinus Grünwald, Jones, Franz-Chávez and Ahumada-Carrillo, 2015 -- valid -- Emerald Horned Pitviper
  Ophryacus sphenophrys (H. M. Smith, 1960) -- valid -- Broad-horned Pitviper
  Ophryacus undulatus (Jan, 1859) -- valid -- Slender-horned Pitviper, Mexican Horned Pit Viper
  Opisthotropis Günther, 1872 -- valid
  Opisthotropis alcalai Brown and Leviton, 1961 -- valid -- Gary's Mountain Keelback
  Opisthotropis andersonii (Boulenger, 1888) -- valid -- Anderson's Mountain Keelback
  Opisthotropis atra Günther, 1872 -- valid
  Opisthotropis balteata (Cope, 1895) -- valid -- Hainan Mountain Keelback
  Opisthotropis cheni Zhao, 1999 -- valid
  Opisthotropis cucae David, Cuong The Pham, T. Q. Nguyen and Zigler, 2011 -- valid -- Cuc's Mountain Snake
  Opisthotropis daovantieni Orlov, Darevsky and Murphy, 1998 -- valid -- Tien's Mountain Stream Snake
  Opisthotropis durandi Teynié, Lottier, David, T. Q. Nguyen and Vogel, 2014 -- valid -- Durand's Mountain Stream Snake
  Opisthotropis guangxiensis Zhao and Jiang, 1979 -- valid -- Guangxi Mountain Keelback
  Opisthotropis jacobi Angel and Bourret, 1933 -- valid -- Chapa Mountain Keelback
  Opisthotropis kikuzatoi (Okada and Takara, 1958) -- valid -- Kikuzato's Stream Snake
  Opisthotropis kuatunensis Pope, 1928 -- valid -- Chinese Mountain Keelback
  Opisthotropis lateralis Boulenger, 1903 -- valid -- Tonkin Mountain Keelback
  Opisthotropis latouchii (Boulenger, 1899) -- valid -- Sichuan Mountain Keelback
  Opisthotropis laui J.-H. Yang, Sung and B. P.-L. Chan, 2013 -- valid -- Lau's Mountain Stream Snake
  Opisthotropis maculosa Stuart and Chuaynkern, 2007 -- valid -- Yellow-spotted Mountain Stream Snake, Yellow-spotted Mountain Keelback
  Opisthotropis maxwelli Boulenger, 1914 -- valid -- Maxwell's Mountain Keelback
  Opisthotropis rugosa (Lidth de Jeude, 1890) -- valid
  Opisthotropis shenzhenensis Y.-Y. Wang, Guo, Z.-Y. Liu, Lyu, J. Wang, Luo, Sun and Y.-W. Zhang, 2017 -- valid -- Shenzhen Mountain Stream Snake
  Opisthotropis spenceri M. A. Smith, 1918 -- valid -- Smith's Mountain Keelback, Spencer's Stream Snake
  Opisthotropis tamdaoensis Zielger, David and Thanh, 2008 -- valid
  Opisthotropis typica (Mocquard, 1890) -- valid -- Olive Mountain Keelback
  Oplurus cuvieri (Gray, 1831) -- valid -- Cuvier's Madagascar Swift
  Oplurus cuvieri comorensis (Angel, 1942) -- valid
  Oplurus cuvieri cuvieri (Gray, 1831) -- valid
  Oplurus cyclurus (Merrem, 1820) -- valid -- Merrem's Madagascar Swift
  Oplurus fierinensis Grandidier, 1869 -- valid -- Anzamala Madagascar Swift
  Oplurus grandidieri (Mocquard, 1900) -- valid -- Grandidier's Madagascar Swift
  Oplurus quadrimaculatus A. H. A. Duméril and Bibron, 1851 -- valid -- Duméril's Madagascar Swift
  Oplurus saxicola Grandidier, 1869 -- valid -- Marked Madagascar Swift
  Oreocalamus hanitschi Boulenger, 1899 -- valid -- Hanitsch's Reed Snake, Kalimantan Burrowing Snake
  Oreocryptophis porphyraceus (Cantor, 1839) -- valid -- Black-banded Trinket Snake, Red Bamboo Snake
  Oreocryptophis porphyraceus coxi (Schulz and Helfenberger, 1998) -- valid
  Oreocryptophis porphyraceus kawakamii (Oshima, 1911) -- valid
  Oreocryptophis porphyraceus laticincta (Schulz and Helfenberger, 1998) -- valid
  Oreocryptophis porphyraceus porphyraceus (Cantor, 1839) -- valid
  Oreocryptophis porphyraceus pulchra (Schmidt, 1925) -- valid
  Oreocryptophis porphyraceus vaillanti (Sauvage, 1876) -- valid
  Orientocoluber spinalis (Peters, 1866) -- valid -- Slender Racer
  Oriocalotes M. A. Smith, 1935 -- valid
  Oriocalotes paulus M. A. Smith, 1935 -- valid -- Small Forest Lizard
  Orthriophis cantoris (Boulenger, 1894) -- valid -- Eastern Trinket Snake
  Orthriophis hodgsoni (Günther, 1860) -- valid
  Orthriophis moellendorffi (Boettger, 1886) -- valid -- Flower Snake, Moellendorf's Rat Snake
  Orthriophis taeniurus (Cope, 1861) -- valid -- Beauty Snake
  Orthriophis taeniurus callicyanous Schulz, 2010 -- valid -- Blue Beauty Ratsnake
  Orthriophis taeniurus friesei (Werner, 1927) -- valid -- Taiwan Beauty Snake
  Orthriophis taeniurus grabowskyi (Fischer, 1885) -- valid
  Orthriophis taeniurus helfenbergeri Schulz, 2010 -- valid
  Orthriophis taeniurus mocquardi (Schulz, 1996) -- valid
  Orthriophis taeniurus ridleyi (Butler, 1899) -- valid
  Orthriophis taeniurus schmackeri (Boettger, 1895) -- valid -- Sakishima Beauty Snake
  Orthriophis taeniurus taeniurus (Cope, 1861) -- valid
  Orthriophis taeniurus yunnanensis (Anderson, 1879) -- valid
  Otocryptis beddomei Boulenger, 1885 -- invalid -- Indian Kangaroo Lizard
  Otocryptis beddomii Boulenger, 1885 -- valid -- Indian Kangaroo Lizard
  Otocryptis nigristigma Bahir and Silva, 2005 -- valid
  Otocryptis wiegmanni Wagler, 1830 -- valid -- Wiegmann's Agama
  Ovophis convictus (Stoliczka, 1870) -- valid -- Indo-Malayan Mountain Pitviper
  Ovophis makazayazaya (Takahashi, 1922) -- valid -- Taiwan Mountain Pitviper
  Ovophis monticola (Günther, 1864) -- valid -- Chinese Mountain Pit Viper
  Ovophis monticola makazayazaya (Takahashi, 1922) -- invalid
  Ovophis monticola monticola (Günther, 1864) -- invalid
  Ovophis monticola zhaokentangi Zhao, 1995 -- invalid
  Ovophis okinavensis (Boulenger, 1892) -- valid -- Ryukyu Island Pit Viper, Okinawa Pitviper
  Ovophis tonkinensis (Bourret, 1934) -- valid -- Tonkin Pitviper
  Ovophis zayuensis (Jiang, 1977) -- valid
  Oxybelis aeneus (Wagler, 1824) -- valid -- Brown Vine Snake, Brown Vinesnake, Culebra-bejuquilla mexicana, Mexican Vine Snake
  Oxybelis brevirostris (Cope, 1861) -- valid -- Cope's Vine Snake
  Oxybelis fulgidus (Daudin, 1803) -- valid -- Culebra-bejuquilla verde
  Oxybelis wilsoni Villa and McCranie, 1995 -- valid
  Oxyrhabdium Boulenger, 1893 -- valid
  Oxyrhabdium leporinum (Günther, 1858) -- valid -- Günther's Philippine Shrub Snake
  Oxyrhabdium leporinum leporinum (Günther, 1858) -- valid
  Oxyrhabdium leporinum visayanum Leviton, 1958 -- valid
  Oxyrhabdium modestum (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Philippine Shrub Snake
  Oxyrhopus bicolor Peracca, 1904 -- invalid
  Oxyrhopus clathratus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Duméril's False Coral Snake
  Oxyrhopus doliatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Bibron's False Coral Snake
  Oxyrhopus erdisii (Barbour, 1913) -- valid
  Oxyrhopus fitzingeri (Tschudi, 1845) -- valid -- Fitzinger's False Coral Snake
  Oxyrhopus fitzingeri fitzingeri (Tschudi, 1845) -- valid
  Oxyrhopus fitzingeri frizzelli Schmidt and Walker, 1943 -- valid
  Oxyrhopus formosus (Wied-Neuwied, 1820) -- valid -- Beautiful Calico Snake, Formosa False Coral Snake
  Oxyrhopus guibei Hoge and Romano, 1977 -- valid
  Oxyrhopus leucomelas (Werner, 1916) -- valid -- Werner's False Coral Snake
  Oxyrhopus marcapatae (Boulenger, 1902) -- valid -- Boulenger's False Coral Snake
  Oxyrhopus melanogenys (Tschudi, 1845) -- valid -- Tschudi's False Coral Snake
  Oxyrhopus melanogenys melanogenys (Tschudi, 1845) -- valid
  Oxyrhopus melanogenys orientalis da Cunha and Nascimento, 1983 -- valid
  Oxyrhopus occipitalis (Wied-Neuwied, 1824) -- valid
  Oxyrhopus petolarius (Linnaeus, 1758) -- valid -- Forest Flame Snake, Culebra-encendida de Cálico, Calico Snake
  Oxyrhopus petolarius digitalis (Reuss, 1834) -- valid
  Oxyrhopus petolarius petolarius (Linnaeus, 1758) -- valid
  Oxyrhopus petolarius sebae A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid
  Oxyrhopus rhombifer A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Amazon False Coral Snake
  Oxyrhopus rhombifer bachmanni (Weyenberg, 1876) -- valid
  Oxyrhopus rhombifer inaequifasciatus Werner, 1909 -- valid
  Oxyrhopus rhombifer rhombifer A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid
  Oxyrhopus sebae A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Oxyrhopus trigeminus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Brazilian False Coral Snake
  Oxyrhopus trigeminus guibei Hoge and Romano, 1977 -- invalid
  Oxyrhopus undulatus Jensen, 1900 -- invalid
  Oxyrhopus vanidicus Lynch, 2009 -- valid
  Oxyropus maculatus Boulenger, 1896 -- invalid
  Oxyrrhopus haasi Boettger, 1905 -- invalid
  Oxyrrhopus rusticus Cope, 1878 -- invalid
  Oxyuranus microlepidotus (McCoy, 1879) -- valid -- Fierce Snake, Inland Taipan
  Oxyuranus scutellatus (W. C. H. Peters, 1867) -- valid -- New Guinea Taipan, Coastal Taipan
  Oxyuranus scutellatus canni Slater, 1956 -- valid -- Papuan Taipan
  Oxyuranus scutellatus scutellatus (W. C. H. Peters, 1867) -- valid -- Coastal Taipan, New Guinea Taipan
  Oxyuranus temporalis Doughty, Maryan, Donnellan and Hutchinson, 2007 -- valid -- Western Desert Taipan, Central Ranges Taipan
  Padangia pulchra Werner, 1924 -- invalid
  Pailsus pailsei Hoser, 1998 -- invalid
  Pailsus rossignolii Hoser, 2000 -- invalid
  Palleon Glaw, Hawlitschek and Ruthensteiner, 2013 -- valid
  Palleon lolontany (Raxworthy and Nussbaum, 1995) -- valid
  Palleon nasus (Boulenger, 1887) -- valid -- Eiongate Leaf Chameleon
  Palleon nasus nasus (Boulenger, 1887) -- valid
  Palleon nasus pauliani (Brygoo, Blanc and Domergue, 1972) -- valid
  Pantherophis alleghaniensis (Holbrook, 1836) -- valid -- Eastern Rat Snake, Eastern Ratsnake
  Pantherophis bairdi (Yarrow, 1880) -- valid -- Baird's Ratsnake, Baird's Rat Snake, Culebra-ratonera de Baird
  Pantherophis emoryi (Baird and Girard, 1853) -- valid -- Great Plains Rat Snake, Great Plains Ratsnake
  Pantherophis guttatus (Linnaeus, 1766) -- valid -- Eastern Corn Snake, Culebra-ratonera de maiz, Corn Snake, Cornsnake, Red Cornsnake
  Pantherophis obsoletus (Say in James, 1823) -- valid -- Pilot Black Snake, Western Rat Snake, Black Rat Snake, Texas Ratsnake, Western Ratsnake
  Pantherophis ramspotti Crother, White, Savage, Eckstut, Graham and Gardner, 2011 -- valid -- Western Foxsnake
  Pantherophis slowinskii (Burbrink, 2002) -- valid -- Slowinski's Cornsnake
  Pantherophis spiloides (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Gray Rat Snake, Gray Ratsnake, Midland Rat Snake
  Pantherophis vulpinus (Baird and Girard, 1853) -- valid -- Eastern Fox Snake, Eastern Foxsnake
  Parafimbrios lao Teynié, David, Lottier, Le, Vidal and T. Q. Nguyen, 2015 -- valid
  Parahelicops Bourret, 1934 -- valid
  Parahelicops annamensis Bourret, 1934 -- valid -- Annam Keelback
  Parahelicops boonsongi Taylor and Elbel, 1958 -- invalid
  Parahydrophis mertoni (Roux, 1910) -- valid -- Northern Mangrove Seasnake, Arafura Smooth Seasnake
  Paralaudakia Baig, Wagner, Ananjeva and Böhme, 2012 -- valid
  Paralaudakia badakhshana (Anderson and Leviton, 1969) -- valid -- Badakhshana Rock Agama
  Paralaudakia bochariensis (Nikolsky, 1897) -- valid
  Paralaudakia caucasia (Eichwald, 1831) -- valid -- Caucasian Agama
  Paralaudakia erythrogaster (Nikolsky, 1896) -- valid -- Redbelly Rock Agama
  Paralaudakia himalayana (Steindachner, 1867) -- valid -- Himalayan Agama
  Paralaudakia lehmanni (Nikolsky, 1896) -- valid -- Turkestan Rock Agama
  Paralaudakia microlepis (Blanford, 1874) -- valid -- Smallscaled Rock Agama
  Paralaudakia microlepis microlepis (Blanford, 1874) -- valid
  Paralaudakia microlepis taftanica Sanchooli, Rahimian, N. Rastegar-Pouyani and E. Rastegar-Pouyan, 2015 -- valid
  Paralaudakia stoliczkana (Blanford, 1875) -- valid -- Mongolia Rock Agama
  Paralaudakia stoliczkana altaica (Munkhbayar and Shagdarsuren, 1970) -- valid
  Paralaudakia stoliczkana stoliczkana (Blanford, 1875) -- valid
  Paraphimophis rusticus (Cope, 1878) -- valid -- Culebra
  Parapistocalamus hedigeri Roux, 1934 -- valid -- Hediger's Coral Snake, Bougainville Coral Snake
  Pararhabdophis Bourret, 1934 -- valid
  Pararhabdophis chapaensis Bourret, 1934 -- valid -- Vietnam Water Snake
  Pararhadinaea albignaci Domergue, 1984 -- invalid
  Pararhadinaea melanogaster Boettger, 1898 -- valid -- Madagascar Burrowing Snake
  Pararhadinaea melanogaster marojejyensis Domergue, 1984 -- valid
  Pararhadinaea melanogaster melanogaster Boettger, 1898 -- valid
  Parastenophis betsileanus (Günther, 1880) -- valid
  Parasuta dwyeri (Worrell, 1956) -- valid -- Variable Black-naped Snake
  Parasuta flagellum (McCoy, 1878) -- valid -- Whip Hooded Snake, Little Whip Snake
  Parasuta gouldii (Gray, 1841) -- valid -- Black-headed Snake, Gould's Hooded Snake
  Parasuta monachus (Storr, 1964) -- valid -- Monk Snake, Hooded Snake
  Parasuta nigriceps (Günther, 1863) -- valid -- Mallee Black-backed Snake
  Parasuta spectabilis (Krefft, 1869) -- valid -- Spectacled Hooded Snake, Bush's Hooded Snake
  Parasuta spectabilis bushi (Storr, 1988) -- valid
  Parasuta spectabilis nullarbor (Storr, 1981) -- valid
  Parasuta spectabilis spectabilis (Krefft, 1869) -- valid
  Paratapinophis Angel, 1929 -- valid
  Paratapinophis praemaxillaris Angel, 1929 -- valid -- Brown Stream Snake, Angel's Mountain Keelback
  Pareas atayal You, Poyarkov and Lin, 2015 -- valid -- Atayal Slug-eating Snake
  Pareas boulengeri (Angel, 1920) -- valid -- Boulenger's Slug Snake
  Pareas carinatus (H. Boie, 1828) -- valid -- Keeled Slug Snake
  Pareas carinatus carinatus (H. Boie, 1830) -- valid
  Pareas carinatus unicolor (Bourret, 1934) -- valid
  Pareas chinensis (Barbour, 1912) -- valid -- Chinese Slug Snake
  Pareas formosensis (Van Denburgh, 1909) -- valid -- Formosa Slug Snake, Taiwan Slug Snake
  Pareas hamptoni (Boulenger, 1905) -- valid -- Hampton's Slug Snake
  Pareas iwasakii (Maki, 1937) -- valid
  Pareas komaii (Maki, 1931) -- valid -- Formosa Slug Snake
  Pareas margaritophorus (Jan, 1866) -- valid -- Mountain Slug Snake
  Pareas monticola (Cantor, 1839) -- valid -- Common Slug Snake
  Pareas nigriceps Guo and Deng, 2009 -- valid -- Xiaoheishan Slug-eater Snake
  Pareas nuchalis (Boulenger, 1900) -- valid
  Pareas stanleyi (Boulenger, 1914) -- valid -- Stanley's Slug Snake
  Pareas vindumi Vogel, 2015 -- valid -- Vindum's Slug Eater
  Pariaspis canum Cope, 1860 -- invalid
  Paroplocephalus atriceps (Storr, 1980) -- valid -- Lake Cronin Snake
  Pelias olguni Tuniyev, Avci, Tuniyev, A. L. Agasian and L. A. Agasian, 2012 -- invalid
  Pelias renardi Christoph, 1861 -- invalid
  Pelias shemakhensis Tuniyev, Orlov, Tuniyev and Kidov, 2013 -- invalid
  Pelias trigonatus Leybold, 1873 -- invalid
  Pelias ursinii Bonaparte, 1835 -- invalid
  Pelophis schoutedeni de Witte, 1942 -- invalid
  Perinetia coulangesi Domergue, 1988 -- invalid
  Periops algira Jan, 1863 -- invalid
  Periops dorri Lataste, 1888 -- invalid
  Petrosaurus Boulenger, 1885 -- valid -- Rock Lizards
  Petrosaurus mearnsi (Stejneger, 1894) -- valid -- Banded Rock Lizard, Lagartija-de piedra rayada
  Petrosaurus repens (Van Denburgh, 1895) -- valid
  Petrosaurus slevini (Van Denburgh, 1922) -- valid -- Banded Rock Lizard
  Petrosaurus thalassinus (Cope, 1863) -- valid -- Lagartija-de piedra bajacaliforniana, Baja California Rock Lizard
  Phalotris bilineatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid
  Phalotris concolor Ferrarezzi, 1993 -- valid
  Phalotris cuyanus (Cei, 1984) -- valid
  Phalotris labiomaculatus de Lema, 2002 -- valid
  Phalotris lativittatus Ferrarezzi, 1993 -- valid
  Phalotris lemniscatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Duméril's Diadem Snake
  Phalotris lemniscatus divittatus (de Lema, 1984) -- valid
  Phalotris lemniscatus iheringi (Strauch, 1884) -- valid
  Phalotris lemniscatus lemniscatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid
  Phalotris lemniscatus trilineatus (Boulenger, 1889) -- valid
  Phalotris matogrossensis de Lema, d'Agostini and Cappelari, 2005 -- valid -- Mato Grosso Burrowing Snake
  Phalotris mertensi (Hoge, 1955) -- valid
  Phalotris multipunctatus Puorto and Ferrarezzi, 1993 -- valid
  Phalotris nasutus (Gomes, 1915) -- valid
  Phalotris nigrilatus Ferrarezzi, 1993 -- valid
  Phalotris normanscotti Cabral and Cacciali, 2015 -- valid -- Chaco Burrowing Snake
  Phalotris reticulatus (Peters, 1860) -- valid
  Phalotris sansebastiani Jansen and Köhler, 2008 -- valid
  Phalotris tricolor (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Tricolored Burrowing Snake
  Philodryas aestiva (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Brazilian Green Racer
  Philodryas aestiva aestiva (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid
  Philodryas aestiva subcarinatus Boulenger, 1902 -- valid
  Philodryas agassizii (Jan, 1863) -- valid -- Burrowing Night Snake
  Philodryas amaru Zaher, Arredondo, Valencia, Arbelaez, Rodrigues and Altamirano-Benavides, 2014 -- valid
  Philodryas argentea (Daudin, 1803) -- valid -- Striped Sharpnose Snake
  Philodryas arnaldoi (Amaral, 1932) -- valid -- Arnaldo's Green Racer
  Philodryas baroni Berg, 1895 -- valid -- Baron's Green Racer
  Philodryas boliviana Boulenger, 1896 -- valid -- Bolivian Racer
  Philodryas chamissonis (Wiegmann, 1835) -- valid -- Chilean Green Racer
  Philodryas cordata Donnelly and Myers, 1991 -- valid
  Philodryas dorsalis Günther, 1858 -- invalid
  Philodryas erlandi Lönnberg, 1902 -- valid -- Miranda Green Racer
  Philodryas georgeboulengeri Grazziotin, Zaher, Murphy, Scrocchi, Benavides, Zhang and Bonatto, 2012 -- valid -- Southern Sharpnose Snake
  Philodryas laticeps Werner, 1900 -- valid
  Philodryas latirostris Cope, 1863 -- invalid
  Philodryas livida (Amaral, 1923) -- valid
  Philodryas mattogrossensis Koslowsky, 1898 -- valid -- Miranda Green Racer
  Philodryas nattereri Steindachner, 1870 -- valid -- Paraguay Green Racer
  Philodryas olfersii (Lichtenstein, 1823) -- valid -- Lichtenstein's Green Racer
  Philodryas olfersii herbeus (Wied-Neuwied, 1825) -- valid
  Philodryas olfersii latirostris Cope, 1863 -- valid
  Philodryas olfersii olfersii (Lichtenstein, 1823) -- valid
  Philodryas patagoniensis (Girard, 1858) -- valid -- Patagonia Green Racer
  Philodryas psammophidea Günther, 1872 -- valid -- Günther's Green Racer
  Philodryas simonsii Boulenger, 1900 -- valid
  Philodryas subcarinatus Boulenger, 1902 -- invalid
  Philodryas tachymenoides (Schmidt and Walker, 1943) -- valid -- Schmidt's Green Racer
  Philodryas taeniatus Peters in Hensel, 1868 -- invalid
  Philodryas trilineata (Burmeister, 1861) -- valid
  Philodryas varia (Jan, 1863) -- valid -- Jan's Green Racer
  Philodryas varius (Jan, 1863) -- invalid
  Philodryas viridissima (Linnaeus, 1758) -- valid -- Common Green Racer
  Philothamnus angolensis Bocage, 1882 -- valid -- Western Green Snake
  Philothamnus battersbyi Loveridge, 1951 -- valid -- Battersby's Green Snake
  Philothamnus bequaerti (Schmidt, 1923) -- valid -- Bequaert's Green Snake
  Philothamnus carinatus (Andersson, 1901) -- valid -- Thirteen-scaled Green Snake
  Philothamnus depressirostris Cope, 1861 -- invalid
  Philothamnus dorsalis (Bocage, 1866) -- valid -- Striped Wood Snake, Striped Green Snake
  Philothamnus girardi Bocage, 1893 -- valid -- Girard's Green Snake, Annobon Wood Snake
  Philothamnus heterodermus (Hallowell, 1857) -- valid -- Variable Green Snake, Emerald Green Snake
  Philothamnus heterodermus ruandae Loveridge, 1951 -- invalid
  Philothamnus heterolepidotus (Günther, 1863) -- valid -- Slender Green Snake
  Philothamnus hoplogaster (Günther, 1863) -- valid -- Southeastern Green Snake, Green Water Snake
  Philothamnus hughesi Trape and Roux-Esteve, 1990 -- valid -- Hughes' Green Snake
  Philothamnus irregularis (Leach, 1819) -- valid -- Northern Green Bush Snake, Irregular Green Snake
  Philothamnus irregularis battersbyi Loveridge, 1951 -- invalid
  Philothamnus macrops (Boulenger, 1895) -- valid -- Usambara Green Snake
  Philothamnus natalensis (A. Smith, 1848) -- valid -- Natal Green Snake
  Philothamnus natalensis natalensis (A. Smith, 1848) -- valid -- Natal Green Snake
  Philothamnus natalensis occidentalis Broadley, 1966 -- valid -- Eastern Green Snake
  Philothamnus nitidus (Günther, 1863) -- valid -- Green Bush Snake, Cameroons Wood Snake
  Philothamnus nitidus loveridgei Laurent, 1960 -- valid
  Philothamnus nitidus nitidus (Günther, 1865) -- valid
  Philothamnus ornatus Bocage, 1872 -- valid -- Ornate Green Snake
  Philothamnus pobeguini (Chabanaud, 1916) -- valid
  Philothamnus punctatus Peters, 1867 -- valid -- Spotted Green Snake
  Philothamnus ruandae Loveridge, 1951 -- valid -- Rwanda Forest Green Snake, Ruanda Emerald Green Snake
  Philothamnus semivariegatus (A. Smith, 1840) -- valid -- Spotted Bush Snake, Variegated Green Snake
  Philothamnus thomensis Bocage, 1882 -- valid -- Sao Tome Wood Snake
  Phimophis guerini (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Argentine Pampas Snake
  Phimophis guianensis (Troschel, 1848) -- valid -- Troschel's Pampas Snake
  Phimophis vittatus (Boulenger, 1896) -- valid -- Banded Pampas Snake
  Phisalixella arctifasciata (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid
  Phisalixella iarakaensis (Domergue, 1994) -- valid
  Phisalixella tulearensis (Domergue, 1995) -- valid
  Phisalixella variabilis (Boulenger, 1896) -- valid
  Phoxophrys Hubrecht, 1881 -- valid
  Phoxophrys borneensis Inger, 1960 -- valid -- Sabah Eyebrow Lizard
  Phoxophrys cephalum (Mocquard, 1890) -- valid -- Mocquard's Eyebrow Lizard
  Phoxophrys nigrilabris (W. C. H. Peters, 1864) -- valid -- Blacklipped Eyebrow Lizard
  Phoxophrys spiniceps M. A. Smith, 1925 -- valid -- Sarawak Eyebrow Lizard
  Phoxophrys tuberculata Hubrecht, 1881 -- valid -- Hubrecht's Eyebrow Lizard
  Phrynocephalus Kaup, 1825 -- valid
  Phrynocephalus ahvazicus Melnikov, Melnikova, Nazarov, Rajabizadeh, Al-Johany, Amr and Ananjeva, 2014 -- valid
  Phrynocephalus ananjevae Melnikov, Melnikova, Nazarov and Rajabizadeh, 2013 -- valid
  Phrynocephalus arabicus J. Anderson, 1894 -- valid -- Arabian Toadhead Agama
  Phrynocephalus axillaris Blanford, 1875 -- valid -- Yarkand Toad-headed Agama
  Phrynocephalus clarkorum S. C. Anderson and Leviton, 1967 -- valid
  Phrynocephalus erythrurus Zugmayer, 1909 -- valid
  Phrynocephalus euptilopus Alcock and Finn, 1897 -- valid -- Alcock's Toad-headed Agama
  Phrynocephalus forsythii Anderson, 1872 -- valid -- Forsyth's Toadhead Agama
  Phrynocephalus golubewii Shenbrot and Semyonov, 1990 -- valid
  Phrynocephalus guttatus (J. F. Gmelin, 1789) -- valid -- Spotted Toadhead Agama
  Phrynocephalus guttatus alpherakii Bedriaga, 1906 -- valid
  Phrynocephalus guttatus guttatus (J. F. Gmelin, 1789) -- valid
  Phrynocephalus guttatus melanurus Eichwald, 1831 -- valid -- Saissan Toad-headed Agama
  Phrynocephalus guttatus moltschanowi Nikolsky, 1913 -- valid
  Phrynocephalus guttatus salsatus Golubev, Gorelov, Dunayev and Koteniko, 1995 -- valid
  Phrynocephalus helioscopus (Pallas, 1771) -- valid -- Sunwatcher Toadhead Agama
  Phrynocephalus helioscopus helioscopus (Pallas, 1773) -- valid
  Phrynocephalus helioscopus saidalievi Sattorov, 1981 -- valid -- Fergana Toad-headed Agamas
  Phrynocephalus helioscopus varius Eichwald, 1831 -- valid
  Phrynocephalus interscapularis Lichtenstein, 1856 -- valid -- Lichtenstein's Toadhead Agama
  Phrynocephalus interscapularis interscapularis Lichtenstein, 1856 -- valid
  Phrynocephalus interscapularis sogdianus Chernov, 1948 -- valid -- Tajikistan Toadhead Agama
  Phrynocephalus lutensis Kamali and S. C. Anderson, 2015 -- valid -- Lut Desert Toad Headed Agama
  Phrynocephalus luteoguttatus Boulenger, 1887 -- valid -- Yellow-speckled Toad-headed Agama
  Phrynocephalus macropeltis Haas, 1957 -- invalid
  Phrynocephalus maculatus J. Anderson, 1872 -- valid -- Blacktail Toadhead Agama
  Phrynocephalus maculatus longicaudatus Hass, 1957 -- valid
  Phrynocephalus maculatus maculatus J. Anderson, 1872 -- valid
  Phrynocephalus mystaceus (Pallas, 1776) -- valid -- Secret Toadhead Agama
  Phrynocephalus mystaceus galli Krassowsky, 1932 -- valid
  Phrynocephalus mystaceus mystaceus (Pallas, 1776) -- valid
  Phrynocephalus nejdensis Haas, 1957 -- invalid
  Phrynocephalus ornatus Boulenger, 1887 -- valid
  Phrynocephalus ornatus ornatus Boulenger, 1887 -- valid
  Phrynocephalus ornatus vindumi Golubev, 1998 -- valid
  Phrynocephalus persicus de Filippi, 1863 -- valid -- Persian Toad-headed Agama
  Phrynocephalus persicus horvathi Mehely, 1894 -- valid -- Transcaucasian Toad-headed Agama
  Phrynocephalus persicus persicus de Filippi, 1863 -- valid
  Phrynocephalus przewalskii Strauch, 1876 -- valid -- Przewalski's Toadhead Agama
  Phrynocephalus putjatai Bedriaga, 1909 -- valid
  Phrynocephalus raddei Boettger, 1888 -- valid
  Phrynocephalus raddei boettgeri Bedriaga, 1906 -- valid
  Phrynocephalus raddei raddei Boettger, 1888 -- valid
  Phrynocephalus reticulatus (Eichwald, 1831) -- valid -- Reticulated Toad-headed Agama
  Phrynocephalus reticulatus bannikovi Darevesky, Rustamov and Shammakov, 1976 -- valid
  Phrynocephalus reticulatus reticulatus Eichwald, 1831 -- valid
  Phrynocephalus roborowskii Bedriaga, 1906 -- valid -- Roborowski's Toadhead Agama
  Phrynocephalus rossikowi Nikolsky, 1898 -- valid -- Uzbekistan Toadhead Agama
  Phrynocephalus rossikowi rossikowi Nikolsky, 1898 -- valid
  Phrynocephalus rossikowi shammakowi Szczerbak and Golubev, 1979 -- valid
  Phrynocephalus sakoi Melnikov, Melnikova, Nazarov, Al-Johany and Ananjeva, 2015 -- valid
  Phrynocephalus scutellatus (Oliver, 1807) -- valid -- Gray Toadhead Agama
  Phrynocephalus strauchi Nikolsky, 1899 -- valid
  Phrynocephalus theobaldi Blyth, 1863 -- valid -- Theobald's Toad-headed Agama, Snow Lizard
  Phrynocephalus versicolor Strauch, 1876 -- valid
  Phrynocephalus versicolor doriai Bedriaga, 1909 -- valid
  Phrynocephalus versicolor hispidus Bedriaga, 1909 -- valid
  Phrynocephalus versicolor kulagini Bedriaga, 1909 -- valid
  Phrynocephalus versicolor versicolor Strauch, 1876 -- valid
  Phrynocephalus vlangalii Strauch, 1876 -- valid -- Ching Hai Toadhead Agama
  Phrynocephalus vlangalii hongyuanensis E. Zhao, Jiang and Huang in Jiang, Huang and E. Zhao, 1980 -- valid
  Phrynocephalus vlangalii vlangalii Strauch, 1876 -- valid
  Phrynonax poecilonotus (Günther, 1858) -- valid -- Culebra resoplona norteña, Puffing Snake
  Phrynonax poecilonotus argus (Bocourt, 1888) -- valid
  Phrynonax poecilonotus chrysobronchus (Cope, 1876) -- valid
  Phrynonax poecilonotus poecilonotus (Günther, 1858) -- valid
  Phrynonax polylepis (Peters, 1867) -- valid
  Phrynonax sexcarinatus (Wagler, 1824) -- invalid -- Wagler's Puffing Snake
  Phrynonax shropshirei Barbour and Amaral, 1924 -- valid -- Shropshire's Puffing Snake
  Phrynosoma asio Cope, 1864 -- valid -- Lagartija-cornuda gigante, Giant Horned Lizard
  Phrynosoma bauri Montanucci, 2015 -- valid -- Baur's Short-horned Lizard
  Phrynosoma blainvillii Gray, 1839 -- valid -- Coast Horned Lizard, San Diego Horned Lizard
  Phrynosoma braconnieri A. M. C. Duméril and Bocourt, 1870 -- valid -- Lagartija-cornuda cola corta, Short-tail Horned Lizard
  Phrynosoma brevirostris (Girard, 1858) -- valid -- Great Plains Short-horned Lizard
  Phrynosoma cerroense Stejneger, 1893 -- valid -- Lagartija-cornuda de Isla Cedros, Cedros Island Horned Lizard
  Phrynosoma cornutum (Harlan, 1825) -- valid -- Texas Horned Lizard, Lagartija-cornuda texana
  Phrynosoma coronatum (Blainville, 1835) -- valid -- Coast Horned Lizard, Lagartija-cornuda de litoral
  Phrynosoma coronatum coronatum (Blainville, 1835) -- valid -- Coast Horned Lizard
  Phrynosoma coronatum frontale Van Denburgh, 1894 -- valid -- California Horned Lizard
  Phrynosoma coronatum jamesi Schmidt, 1922 -- valid
  Phrynosoma diminutum Montanucci, 2015 -- valid -- San Luis Valley Short-horned Lizard
  Phrynosoma ditmarsi Stejneger, 1906 -- valid -- Lagartija-cornuda de roca, Rock Horned Lizard
  Phrynosoma douglasii (Bell, 1829) -- valid -- Pygmy Short-horned Lizard, Short-horned Lizard, Pigmy Short-horned Lizard
  Phrynosoma douglasii ornatum Girard, 1858 -- invalid
  Phrynosoma goodei Stejneger, 1893 -- valid -- Sonoran Horned Lizard
  Phrynosoma hernandesi Girard, 1858 -- valid -- Greater Short-horned Lizard, Mountain Short-horned Lizard, Hernandez's Short-horned Lizard
  Phrynosoma hernandesi hernandesi Girard, 1858 -- valid -- Mountain Short-horned Lizard, Hernandez's Short-horned Lizard
  Phrynosoma hernandesi ornatum Girard, 1858 -- valid -- Salt Lake Valley Short-horned Lizard
  Phrynosoma mcallii (Hallowell, 1852) -- valid -- Flat-tailed Horned Lizard, Lagartija-cornuda cola plana, Flat-tail Horned Lizard
  Phrynosoma modestum Girard in Baird and Girard, 1852 -- valid -- Round-tailed Horned Lizard, Lagartija-cornuda cola redonda, Roundtail Horned Lizard
  Phrynosoma orbiculare (Linnaeus, 1758) -- valid -- Lagartija-cornuda de montaña, Mountain Horned Lizard
  Phrynosoma orbiculare bradti Horowitz, 1955 -- valid
  Phrynosoma orbiculare cortezii (A. M. C. Duméril and Bocourt, 1870) -- valid
  Phrynosoma orbiculare dugesii (A. M. C. Duméril and Bocourt, 1870) -- valid
  Phrynosoma orbiculare orbiculare (Linnaeus, 1758) -- valid
  Phrynosoma orbiculare orientale Horowitz, 1955 -- valid
  Phrynosoma ornatissimum Girard, 1858 -- valid -- Desert Short-horned Lizard
  Phrynosoma ornatissimum brachycercum H. M. Smith, 1942 -- valid -- Short-tail Short-horned Lizard
  Phrynosoma ornatissimum ornatissimum Girard, 1958 -- valid -- Desert Short-horned Lizard
  Phrynosoma ornatum Girard, 1858 -- invalid
  Phrynosoma platyrhinos Girard in Baird and Girard, 1852 -- valid -- Desert Horned Lizard, Lagartija-cornuda de desierto
  Phrynosoma platyrhinos calidiarum (Cope, 1896) -- valid -- Southern Desert Horned Lizard
  Phrynosoma platyrhinos platyrhinos Girard in Baird and Girard, 1852 -- valid -- Northern Desert Horned Lizard
  Phrynosoma sherbrookei Nieto-Montes de Oca, Arenas-Moreno, Beltrán-Sánchez and Leaché, 2014 -- valid
  Phrynosoma solare Gray, 1845 -- valid -- Regal Horned Lizard, Lagartija-cornuda real
  Phrynosoma taurus Bocourt in A. M. C. Duméril and Bocourt, 1870 -- valid -- Lagartija-cornuda toro o mexicana, Mexican Horned Lizard
  Phrynosoma wigginsi Montanucci, 2004 -- valid -- Gulf Coast Horned Lizard
  Phyllophis carinata Günther, 1864 -- invalid
  Phyllorhynchus browni Stejneger, 1890 -- valid -- Saddled Leaf-nosed Snake, Culebra-nariz lanceolada ensillada, Saddled Leafnose Snake, Pima Leafnose Snake, Maricopa Leafnose Snake
  Phyllorhynchus decurtatus (Cope, 1868) -- valid -- Spotted Leaf-nosed Snake, Culebra-nariz lanceolada pinta, Spotted Leafnose Snake
  Phymaturus Gravenhorst, 1838 -- valid
  Phymaturus aguanegra Lobo, Laspiur and Acosta, 2013 -- valid
  Phymaturus aguedae Troncoso-Palacios and Esquerré, 2014 -- valid -- Agueda's Rocky Lizard
  Phymaturus alicahuense Núñez, A. Veloso, Espejo, C. Veloso, Cortéz and Araya, 2010 -- valid
  Phymaturus antofagastensis Pereyra, 1985 -- valid
  Phymaturus bibronii (Guichenot, 1848) -- valid
  Phymaturus cacivioi Lobo and Nenda, 2015 -- valid
  Phymaturus calcogaster Scolaro and Cei, 2003 -- valid
  Phymaturus camilae Scolaro, Jara and Pincheira-Donoso, 2013 -- valid -- Camila's Patagonian Rocky Lizard
  Phymaturus castillensis Scolaro and Pincheira-Donoso, 2010 -- valid
  Phymaturus ceii Scolaro and Ibargüengoytía, 2008 -- valid
  Phymaturus curivilcun Scolaro, Corbalán, Tappari and Streitenberger, 2016 -- valid
  Phymaturus damasense Troncoso-Palacios and Lobo, 2012 -- valid
  Phymaturus darwini Núñez, A. Veloso, Espejo, C. Veloso, Cortéz and Araya, 2010 -- valid
  Phymaturus delheyi Avila, C. H. F. Perez, D. R. Perez and Morando, 2011 -- valid
  Phymaturus denotatus Lobo, Nenda and Slodki, 2012 -- valid
  Phymaturus desuetus Scolaro and Tappari, 2009 -- valid
  Phymaturus dorsimaculatus Lobo and Quinteros, 2005 -- valid
  Phymaturus etheridgei Lobo, Abdala and Valdecantos, 2010 -- valid
  Phymaturus excelsus Lobo and Quinteros, 2005 -- valid
  Phymaturus extrilidus Lobo, Espinoza, Sanabria and Quiroga, 2012 -- valid
  Phymaturus felixi Lobo, Abdala and Valdecantos, 2010 -- valid
  Phymaturus indistinctus Cei and Castro, 1973 -- valid
  Phymaturus laurenti Lobo, Abdala and Valdecantos, 2010 -- valid
  Phymaturus mallimaccii Cei, 1980 -- valid -- Thorntail Mountain Lizard
  Phymaturus manuelae Scolaro and Ibargüengoytía, 2008 -- valid
  Phymaturus maulense Núñez, A. Veloso, Espejo, C. Veloso, Cortéz and Araya, 2010 -- valid
  Phymaturus nevadoi Cei and Roig, 1975 -- valid
  Phymaturus paihuanense Núñez, A. Veloso, Espejo, C. Veloso, Cortéz and Araya, 2010 -- invalid
  Phymaturus palluma (Molina, 1782) -- valid -- High Mountain Lizard
  Phymaturus patagonicus Koslowsky, 1898 -- valid -- Patagonia Mountain Lizard
  Phymaturus payuniae Cei and Castro, 1973 -- valid
  Phymaturus punae Cei, Etheridge and Videla, 1985 -- valid -- Cei's Mountain Lizard
  Phymaturus querque Lobo, Abdala and Valdecantos, 2010 -- valid
  Phymaturus rahuensis González-Marín, Fulvio-Pérez, Minoli, Morando and Avila, 2016 -- valid
  Phymaturus roigorum Lobo and Abdala, 2007 -- valid
  Phymaturus sinervoi Scolaro, de la Cruz and Ibargüengoytía, 2012 -- valid
  Phymaturus sitesi Avila, C. H. F. Perez, D. R. Perez and Morando, 2011 -- valid
  Phymaturus somuncurensis Cie and Castro, 1973 -- valid
  Phymaturus spectabilis Lobo and Quinteros, 2005 -- valid -- Climber Lizard
  Phymaturus spurcus Barbour, 1921 -- valid
  Phymaturus tenebrosus Lobo and Quinteros, 2005 -- valid
  Phymaturus tromen Lobo and Nenda, 2015 -- valid
  Phymaturus verdugo Cei and Videla, 2003 -- valid
  Phymaturus videlai Scolaro and Pincheira-Donoso, 2010 -- valid -- Videla Rockys' Lizard
  Phymaturus vociferator Pincheira-Donoso, 2004 -- valid
  Phymaturus williamsi Lobo, Laspiur and Acosta, 2013 -- valid
  Phymaturus yachanana Avila, C. H. F. Perez, Minoli and Morando, 2014 -- valid
  Phymaturus zapalensis Cei and Castro, 1973 -- valid
  Physignathus cocincinus Cuvier, 1829 -- valid -- Chinese Water Dragon
  Pituophis catenifer (Blainville, 1835) -- valid -- Gopher Snake, Bullsnake, Gophersnake
  Pituophis catenifer affinis Hallowell, 1852 -- valid -- Sonoran Gopher Snake, Sonoran Gophersnake
  Pituophis catenifer annectens Baird and Girard, 1853 -- valid -- San Diego Gopher Snake, San Diego Gophersnake
  Pituophis catenifer bimaris Klauber, 1946 -- invalid
  Pituophis catenifer catenifer (Blainville, 1835) -- valid -- Pacific Gopher Snake, Pacific Gophersnake
  Pituophis catenifer deserticola Stejneger, 1893 -- valid -- Great Basin Gopher Snake, Great Basin Gophersnake
  Pituophis catenifer fulginatus Klauber, 1946 -- valid
  Pituophis catenifer insulanus Klauber, 1946 -- valid
  Pituophis catenifer pumilis Klauber, 1946 -- valid -- Santa Cruz Gopher Snake, Santa Cruz Island Gophersnake
  Pituophis catenifer sayi (Schlegel, 1837) -- valid -- Bullsnake
  Pituophis deppei (A. M. C. Duméril, 1853) -- valid -- Culebra-sorda mexicana, Mexican Bull Snake, Mexican Pine Snake
  Pituophis deppei deppei (A. M. C. Duméril, 1853) -- valid
  Pituophis deppei gibsoni Stuart, 1954 -- invalid
  Pituophis deppei jani (Cope, 1861) -- valid
  Pituophis lineaticollis (Cope, 1861) -- valid -- Culebra-sorda centroamericana, Middle American Gopher Snake, Cincuate Bull Snake
  Pituophis lineaticollis gibsoni Stuart, 1954 -- valid
  Pituophis lineaticollis lineaticollis (Cope, 1861) -- valid
  Pituophis melanoleucus (Daudin, 1803) -- valid -- Pine Snake, Pinesnake, Culebra-sorda toro, Eastern Pine Snake, Eastern Pinesnake
  Pituophis melanoleucus lodingi Blanchard, 1924 -- valid -- Black Pine Snake, Black Pinesnake
  Pituophis melanoleucus melanoleucus (Daudin, 1803) -- valid -- Northern Pine Snake, Northern Pinesnake
  Pituophis melanoleucus mugitus Barbour, 1921 -- valid -- Florida Pine Snake, Florida Pinesnake
  Pituophis ruthveni Stull, 1929 -- valid -- Louisiana Pine Snake, Louisiana Pinesnake
  Pituophis vertebralis (Blainville, 1835) -- valid -- Cape Gopher Snake
  Plagiodon erythrurus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Plagiopholis blakewayi Boulenger, 1893 -- valid -- Blakeway's Mountain Snake
  Plagiopholis delacouri Angel, 1929 -- valid
  Plagiopholis nuchalis (Boulenger, 1893) -- valid -- Assam Mountain Snake
  Plagiopholis styani (Boulenger, 1899) -- valid -- Chinese Mountain Snake
  Plagiopholis unipostocularis Zhao, Jiang and Huang, 1978 -- invalid
  Platurus frontalis De Vis, 1905 -- invalid
  Platurus schistorhynchus Günther, 1874 -- invalid
  Platurus semifasciatus Reinwardt in Schlegel, 1837 -- invalid
  Platyceps afarensis Schätti and Ineich, 2004 -- valid
  Platyceps bholanathi (Sharma, 1976) -- valid -- Sharma's Racer
  Platyceps brevis (Boulenger, 1895) -- valid -- Somali Racer, Short Racer
  Platyceps brevis brevis (Boulenger, 1895) -- valid
  Platyceps brevis smithii (Boulenger, 1895) -- valid -- Smith's Racer
  Platyceps collaris (Müller, 1878) -- valid
  Platyceps elegantissimus (Günther, 1878) -- valid -- Elegant Racer
  Platyceps florulentus (Geoffroy de St-Hilaire, 1827) -- valid -- Flowered Racer, Geoffroys' Racer
  Platyceps florulentus florulentus (Geoffroy, 1827) -- valid
  Platyceps florulentus keniensis (Parker, 1932) -- valid
  Platyceps florulentus perreti (Schätti, 1988) -- valid
  Platyceps gracilis (Günther, 1862) -- valid -- Graceful Racer
  Platyceps insulanus (Mertens, 1965) -- valid -- Sarso Island Racer
  Platyceps karelini (Brandt, 1838) -- valid -- Spotted Desert Racer
  Platyceps karelini chesneii (Martin, 1838) -- valid
  Platyceps karelini karelini (Brandt, 1838) -- valid
  Platyceps karelini mintonorum (Mertens, 1969) -- valid
  Platyceps karelini rogersi (Anderson, 1893) -- invalid
  Platyceps ladacensis (Anderson, 1871) -- valid -- Braid Snake, Jan's Cliff Racer
  Platyceps largeni (Schätti, 2001) -- valid -- Dahlak Racer
  Platyceps messanai (Schätti and Lanza, 1989) -- valid -- Schätti's Racer
  Platyceps najadum (Eichwald, 1831) -- valid -- Slender Whip Snake, Dahl's Whip Snake
  Platyceps najadum albitemporalis (Darevsky and Orlov, 1994) -- valid
  Platyceps najadum atayevi (Tuniyev and Shammakov, 1993) -- valid
  Platyceps najadum dahlii (Schinz, 1833) -- valid
  Platyceps najadum kalymnensis (B. Schneider, 1979) -- valid
  Platyceps najadum najadum (Eichwald, 1831) -- valid
  Platyceps najadum schmidtleri (Schätti and McCarthy, 2001) -- valid
  Platyceps noeli Schätti, Tillack and Kucharzewski, 2014 -- valid
  Platyceps rhodorachis (Jan, 1865) -- valid -- Common Cliff Racer, Jan's Cliff Racer, Desert Racer, Wadi Racer
  Platyceps rhodorachis rhodorachis (Jan, 1865) -- valid
  Platyceps rhodorachis subniger (Boettger, 1893) -- valid
  Platyceps rogersi (Anderson, 1893) -- valid -- Rogers' Racer
  Platyceps scortecci (Lanza, 1963) -- valid
  Platyceps sinai (Schmidt and Marx, 1956) -- valid -- Sinai Racer
  Platyceps sindhensis Schätti, Tillack and Kucharzewski, 2014 -- valid
  Platyceps somalicus (Boulenger, 1896) -- valid -- Ogaden Racer
  Platyceps taylori (Parker, 1949) -- valid -- Taylor's Racer
  Platyceps tessellata (Werner, 1910) -- valid
  Platyceps thomasi (Parker, 1931) -- valid -- Thomas' Semi-banded Racer
  Platyceps variabilis (Boulenger, 1905) -- valid -- Variable Snake
  Platyceps variabilis manseri (Leviton, 1986) -- valid
  Platyceps variabilis variabilis (Boulenger, 1905) -- valid
  Platyceps ventromaculatus (Gray, 1834) -- valid -- Hardwicke's Rat Snake, Glossy-bellied Racer
  Platyceps ventromaculatus bengalensis (Khan and Khan, 2000) -- valid
  Platyceps ventromaculatus indusai (Khan and Khan, 2000) -- valid
  Platyceps ventromaculatus ventromaculatus (Gray, 1834) -- valid
  Platypteryx perroteti A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Plesiodipsas perijanensis (Aleman, 1953) -- valid -- Aleman's Snail-eater
  Plica Gray, 1831 -- valid
  Plica caribeana Murphy and Jowers, 2013 -- valid -- Caribbean Treerunner
  Plica kathleenae Murphy and Jowers, 2013 -- valid -- Kathleen's Treerunner
  Plica lumaria Donnelly and Myers, 1991 -- valid
  Plica medemi Murphy and Jowers, 2013 -- valid -- Medem's Treerunner
  Plica pansticta (Myers and Donnelly, 2001) -- valid
  Plica plica (Linnaeus, 1758) -- valid -- Tree Runner
  Plica rayi Murphy and Jowers, 2013 -- valid -- Ray's Treerunner
  Plica umbra (Linnaeus, 1758) -- valid -- Blue-lipped Tree Lizard, Harlequin Racerunner
  Plica umbra ochrocollaris (Spix, 1825) -- valid
  Plica umbra umbra (Linnaeus, 1758) -- valid
  Pliocercus aequalis Salvin, 1861 -- invalid
  Pliocercus elapoides Cope, 1860 -- valid -- Culebra-imita coral común, Variegated False Coral Snake
  Pliocercus elapoides aequalis Salvin, 1861 -- valid
  Pliocercus elapoides celatus H. M. Smith, 1943 -- invalid
  Pliocercus elapoides diastemus (Bocourt, 1886) -- valid
  Pliocercus elapoides elapoides Cope, 1860 -- valid
  Pliocercus elapoides laticollaris H. M. Smith, 1941 -- invalid
  Pliocercus elapoides occidentalis H. M. Smith and Landy, 1965 -- valid
  Pliocercus elapoides salvinii Müller, 1878 -- invalid
  Pliocercus euryzonus Cope, 1862 -- valid -- Cope's False Coral Snake
  Pliocercus euryzonus burghardti H. M. Smith and Chiszar, 1996 -- valid
  Pliocercus euryzonus euryzonus Cope, 1862 -- valid
  Pliocercus wilmarai H. M. Smith, Perez-Higareda and Chiszar, 1996 -- valid
  Poecilopholis cameronensis Boulenger, 1903 -- valid -- Cameroon Racer
  Pogona Storr, 1982 -- valid
  Pogona barbata (Cuvier, 1829) -- valid -- Eastern Bearded Dragon
  Pogona henrylawsoni Wells and Wellington, 1985 -- valid -- Black-soil Bearded Dragon
  Pogona microlepidota (Glauert, 1952) -- valid -- Kimberley Bearded Dragon
  Pogona minima (Loveridge, 1933) -- valid -- Western Bearded Dragon
  Pogona minor (Sternfeld, 1919) -- valid -- Western Bearded Dragon
  Pogona mitchelli (Badham, 1976) -- valid -- North-west Bearded Dragon
  Pogona nullarbor (Badham, 1976) -- valid -- Nullabor Bearded Dragon
  Pogona vitticeps (Ahl, 1926) -- valid -- Central Bearded Dragon
  Pogonaspis ruficeps Cope, 1894 -- invalid
  Polemon acanthias (Reinhardt, 1860) -- valid -- Reinhardt's Snake-eater
  Polemon barthii Jan, 1858 -- valid -- Guinea Snake-eater
  Polemon bocourti Mocquard, 1897 -- valid -- Bocourt's Snake-eater
  Polemon christyi (Boulenger, 1903) -- valid -- Eastern Snake-eater
  Polemon collaris (Peters, 1881) -- valid -- Collared Snake-eater
  Polemon collaris brevior (de Witte and Laurent, 1947) -- valid
  Polemon collaris collaris (Peters, 1881) -- valid
  Polemon collaris longior (de Witte and Laurent, 1947) -- valid
  Polemon fulvicollis (Mocquard, 1887) -- valid -- African Snake-eater
  Polemon fulvicollis fulvicollis (Mocquard, 1887) -- valid
  Polemon fulvicollis graueri (Sternfeld, 1908) -- valid
  Polemon fulvicollis laurenti Resetar and Marx, 1981 -- valid
  Polemon gabonensis (A. H. A. Duméril, 1856) -- valid -- Gaboon Snake-eater
  Polemon gabonensis gabonensis (A. H. A. Duméril, 1856) -- valid
  Polemon gabonensis schmidti (de Witte and Laurent, 1947) -- valid
  Polemon gracilis (Boulenger, 1911) -- valid -- Graceful Snake-eater
  Polemon griseiceps (Laurent, 1947) -- valid -- Cameroon Snake-eater
  Polemon neuwiedi (Jan, 1858) -- valid -- Ivory Coast Snake-eater, Neuwied's Polemon
  Polemon notatus (Peters, 1882) -- valid
  Polemon notatus aemulans (Wener, 1902) -- invalid
  Polemon notatus notatus (Peters, 1882) -- invalid
  Polemon robustus (de Witte and Laurent, 1943) -- valid -- Zaire Snake-eater
  Polychrus acutirostris Spix, 1825 -- valid -- Brazilian Bush Anole
  Polychrus femoralis Werner, 1910 -- valid -- Werner's Bush Anole
  Polychrus gutturosus Berthold, 1846 -- valid -- Berthold's Bush Anole
  Polychrus jacquelinae Koch, Venegas, Gracia-Bravo and Böhme, 2011 -- valid -- Jacqueline's Bush Anole
  Polychrus liogaster Boulenger, 1908 -- valid -- Boulenger's Bush Anole
  Polychrus marmoratus (Linnaeus, 1758) -- valid -- Many-colored Bush Anole
  Polychrus peruvianus (Noble, 1924) -- valid -- Peruvian Bush Anole
  Polyodontophis bivittatus Boulenger, 1894 -- invalid
  Polyodontophis grahami Boulenger, 1904 -- invalid
  Popeia buniana L. L. Grismer, J. L. Grismer and McGuire, 2006 -- invalid
  Porthidium arcosae Schätti and Kramer, 1993 -- valid -- Manabi Hognose Pitviper
  Porthidium dunni (Hartweg and Oliver, 1938) -- valid -- Nauyaca-nariz de cerdo oxaqueña, Dunn's Hognose Viper
  Porthidium hespere (Campbell, 1976) -- valid -- Nauyaca-nariz de cerdo de Tecomán, Western Hognose Viper
  Porthidium lansbergii (Schlegel, 1841) -- valid
  Porthidium lansbergii hutmanni (Sandner-Montilla, 1989) -- valid
  Porthidium lansbergii lansbergii (Schlegel, 1841) -- valid
  Porthidium lansbergii rozei (Peters, 1968) -- valid
  Porthidium nasutum (Bocourt, 1868) -- valid -- Nauyaca-nariz de cerdo narigona, Hognosed Pit Viper
  Porthidium olmec Perez-Higareda, H. M. Smith and Julia-Zertuche, 1985 -- invalid
  Porthidium ophryomegas (Bocourt, 1868) -- valid -- Slender Hognose Viper
  Porthidium porrasi Lamar, 2003 -- valid
  Porthidium volcanicum Solórzano, 1995 -- valid
  Porthidium yucatanicum (H. M. Smith, 1941) -- valid -- Nauyaca-nariz de cerdo yucateca
  Pristidactylus Fitzinger, 1843 -- valid
  Pristidactylus achalensis (Gallardo, 1964) -- valid -- Argentine Anole
  Pristidactylus alvaroi (Donoso-Barros, 1975) -- valid
  Pristidactylus araucanus (Gallardo, 1964) -- valid
  Pristidactylus casuhatiensis (Gallardo, 1964) -- valid -- Casuhatien Anole
  Pristidactylus fasciatus (d'Orbigny and Bibron, 1837) -- valid -- D'Orbigny's Banded Anole
  Pristidactylus nigroiugulus Cei, Scolaro and Videla, 2001 -- valid
  Pristidactylus scapulatus (Burmeister, 1861) -- valid -- Burmeister's Anole
  Pristidactylus torquatus (Philippi in Philippi and Landbeck, 1861) -- valid
  Pristidactylus valeriae (Donoso-Barros, 1966) -- valid
  Pristidactylus volcanensis Lamborot and Díaz, 1987 -- valid
  Proatheris superciliaris (Peters, 1855) -- valid -- Lowland Swamp Viper, Domino-bellied Viper, Lowland Viper
  Procinura aemula Cope, 1879 -- invalid
  Prosymna ambigua Bocage, 1873 -- valid
  Prosymna ambigua ambigua Bocage, 1873 -- valid -- East African Shovelsnout
  Prosymna ambigua bocagii Boulenger, 1897 -- valid -- Northeast Congo Shovel-snout
  Prosymna angolensis Boulenger, 1915 -- valid -- Angola Shovel-snout
  Prosymna bivittata Werner, 1903 -- valid -- Two-striped Shovel-snout, Twin-striped Shovel-snout
  Prosymna bocagii Boulenger, 1897 -- invalid
  Prosymna frontalis (Peters, 1867) -- valid -- Southwestern African Shovel-snout
  Prosymna greigerti Mocquard, 1906 -- valid
  Prosymna greigerti collaris Sternfeld, 1908 -- valid
  Prosymna greigerti greigerti Mocquard, 1906 -- valid
  Prosymna janii Bianconi, 1862 -- valid -- Keel-scaled Shovel-snout, Mozambique Shovel-snout
  Prosymna lineata (Peters, 1871) -- valid -- Lined Shovel-snout
  Prosymna meleagris (Reinhardt, 1843) -- valid -- Ghana Shovel-snout, Speckled Shovel-snout Snake
  Prosymna meleagris collaris Sternfeld, 1908 -- invalid
  Prosymna ornatissima Barbour and Loveridge, 1928 -- valid -- Ornate Shovelsnout Snake
  Prosymna pitmani Battersby, 1951 -- valid -- Multi-scaled Shovel-snout, Pitman's Shovelsnout Snake
  Prosymna ruspolii (Boulenger, 1896) -- valid -- Ruspoli's Shovelsnout Snake, Southern Somaliland Shovel-snout
  Prosymna semifasciata Broadley, 1995 -- valid -- Banded Shovel-snout
  Prosymna somalica Parker, 1930 -- valid -- Northern Somali Shovelsnout Snake, Ogaden Racer
  Prosymna stuhlmanni (Pfeffer, 1893) -- valid -- East African Shovel-snout
  Prosymna sundevalli (A. Smith, 1849) -- valid
  Prosymna sundevalli bivittata Werner, 1903 -- invalid
  Prosymna visseri Fitzsimons, 1959 -- valid -- Visser's Shovel-snout
  Prosymninae Kelly, Barker, Villet and Broadley, 2009 -- valid
  Protobothrops cornutus (M. A. Smith, 1930) -- valid -- Horned Pit Viper
  Protobothrops dabieshanensis Huang, Pan, Han, L. Zhang, Hou, Yu, Zheng and B. Zhang, 2012 -- valid -- Dabie Mountains Pit Viper
  Protobothrops elegans (Gray, 1849) -- valid -- Elegant Pitviper
  Protobothrops flavoviridis (Hallowell, 1861) -- valid -- Habu
  Protobothrops flavoviridis flavoviridis (Hallowell, 1861) -- valid
  Protobothrops flavoviridis tinkhami (Gloyd, 1955) -- valid
  Protobothrops himalayanus Pan, Chettri, Yang, Jiang, Wang, L. Zhang and Vogel, 2013 -- valid
  Protobothrops jerdonii (Günther, 1875) -- valid -- Jerdon's Pitviper
  Protobothrops jerdonii bourreti (Klemmer, 1963) -- valid -- Bourret's Pitviper
  Protobothrops jerdonii jerdonii (Günther, 1875) -- valid -- Jerdon's Pitviper
  Protobothrops jerdonii xanthomelas (Günther, 1889) -- valid -- Red Spotted Pitviper
  Protobothrops kaulbacki (M. A. Smith, 1940) -- valid -- Kaulback's Lance-headed Pitviper
  Protobothrops mangshanensis (Zhao, 1990) -- valid -- Mang Mountain Pitviper, Mt. Mang Pitviper, Mangshan Pitviper
  Protobothrops maolanensis Yang, Orlov and Wang, 2011 -- valid -- Mao-lan Pitviper
  Protobothrops mucrosquamatus (Cantor, 1839) -- valid -- Brown Spotted Pitviper
  Protobothrops sieversorum (Ziegler, Herrmann, David, Orlov and Pauwels, 2000) -- valid -- Three Horned-scaled Pitviper
  Protobothrops tokarensis (Nagai, 1928) -- valid -- Tokara Habu
  Protobothrops trungkhanhensis Orlov, Ryabov and T. T. Nguyen, 2009 -- valid -- Trungkhanh Pitviper
  Protobothrops xiangchengensis (Zhao, Jiang and Huang, 1979) -- valid -- Szechwan Pit Viper, Kham Plateau Pitviper
  Psammodynastes pictus Günther, 1858 -- valid -- Painted Mock Viper, Spotted Mock Viper
  Psammodynastes pulverulentus (F. Boie, 1827) -- valid -- Common Mock Viper
  Psammodynastes pulverulentus papenfussi Zhao, 1995 -- valid
  Psammodynastes pulverulentus pulverulentus (F. Boie, 1827) -- valid
  Psammophilus Fitzinger, 1843 -- valid
  Psammophilus blanfordanus (Stoliczka, 1871) -- valid -- Blanford's Rock Agama, Peninsular Dwarf Rock Agama
  Psammophilus dorsalis (Gray in Griffith and Pidgeon, 1831) -- valid -- Peninsular Rock Agama, South Indian Rock Agama
  Psammophis acutus Günther, 1888 -- invalid
  Psammophis aegyptius Marx, 1958 -- valid
  Psammophis angolensis (Bocage, 1872) -- valid -- Dwarf Sand Snake
  Psammophis ansorgii Boulenger, 1905 -- valid -- Link-marked Sand Racer
  Psammophis antillensis Schlegel, 1837 -- invalid
  Psammophis biseriatus Peters, 1881 -- valid -- Two-striped Sand Racer, Link-marked Sand Snake
  Psammophis biseriatus tanganicus Loveridge, 1940 -- invalid
  Psammophis brevirostris Peters, 1881 -- valid -- Short-snouted Grass Snake
  Psammophis cerasogaster Cantor, 1839 -- invalid
  Psammophis collaris Gray, 1853 -- invalid
  Psammophis condanarus (Merrem, 1820) -- valid -- Sand Snake
  Psammophis condanarus indochinensis M. A. Smith, 1943 -- invalid
  Psammophis crucifer (Daudin, 1803) -- valid -- Cross-marked Grass Snake, Montane Grass Snake
  Psammophis elegans (Shaw, 1802) -- valid -- Elegant Sand Racer
  Psammophis elegans elegans (Shaw, 1802) -- valid
  Psammophis elegans univittatus Perret, 1961 -- valid
  Psammophis indochinensis M. A. Smith, 1943 -- valid
  Psammophis jallae Peracca, 1896 -- valid -- Jalla's Sand Snake
  Psammophis leightoni Boulenger, 1902 -- valid -- Cape Sand Snake
  Psammophis leightoni namibensis Broadley, 1975 -- invalid
  Psammophis leithii Günther, 1869 -- valid -- Pakistani Ribbon Snake, Pakistan Sand Racer
  Psammophis leopardinus Bocage, 1887 -- valid -- Leopard Sand Snake, Leopard Grass Snake
  Psammophis leucogaster Spawls, 1983 -- invalid
  Psammophis lineatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Lined Olympic Snake
  Psammophis lineolatus (Brandt, 1838) -- valid -- Steppe Ribbon Racer
  Psammophis longifrons Boulenger, 1896 -- valid -- Stocky Sand Snake, Long Sand Racer
  Psammophis mahfalensis Grandidier, 1867 -- invalid
  Psammophis moniliger notostictus Peters, 1867 -- invalid
  Psammophis mossambicus Peters, 1882 -- valid -- Olive Whip Snake
  Psammophis namibensis Broadley, 1975 -- valid -- Namib Sand Snake
  Psammophis notostictus Peters, 1867 -- valid -- Karoo Whip Snake, Karoo Sand Snake, Whip Snake
  Psammophis occidentalis Werner, 1919 -- valid
  Psammophis orientalis Broadley, 1977 -- valid -- Eastern Stripe-bellied Sand Snake
  Psammophis oxyrhynchus Reinhardt, 1843 -- invalid
  Psammophis perroteti A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Psammophis phillipsii (Hallowell, 1844) -- valid -- Phillips' Sand Snake, Olive Grass Racer
  Psammophis praeornatus (Schlegel, 1837) -- valid -- Ornate Olympic Snake
  Psammophis praeornatus gribinguiensis (Angel, 1921) -- valid
  Psammophis praeornatus praeornatus (Schlegel, 1837) -- valid
  Psammophis pulcher Boulenger, 1895 -- valid -- Boulenger's Sand Racer, Beautiful Sand Snake
  Psammophis pulverulenta F. Boie, 1827 -- invalid
  Psammophis punctulatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Speckled Sand Racer
  Psammophis punctulatus punctulatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid
  Psammophis punctulatus trivirgatus Peters, 1878 -- valid
  Psammophis rukwae Broadley, 1966 -- valid -- Rukwa Sand Racer
  Psammophis rukwae leucogaster Spawls, 1983 -- valid
  Psammophis rukwae rukwae Broadley, 1966 -- valid
  Psammophis schokari (Forskal, 1775) -- valid -- Schokari Sand Racer, Forskal Sand Snake
  Psammophis sibilans (Linnaeus, 1758) -- valid -- Striped Sand Snake, Hissing Sand Snake
  Psammophis sibilans leopardinus Bocage, 1887 -- invalid
  Psammophis sibilans mossambica Peters, 1882 -- invalid
  Psammophis sibilans occidentalis Werner, 1919 -- invalid
  Psammophis sibilans rukwae Broadley, 1966 -- invalid
  Psammophis sibilans subtaeniata Peters, 1882 -- invalid
  Psammophis sibilans trinasalis Werner, 1902 -- invalid
  Psammophis subtaeniatus Peters, 1882 -- valid -- Stripe-bellied Sand Snake
  Psammophis subtaeniatus sudanensis Werner, 1919 -- invalid
  Psammophis sudanensis Werner, 1919 -- valid
  Psammophis tanganicus Loveridge, 1940 -- valid -- Tanganyika Sand Snake, Western Link-marked Sand Racer
  Psammophis togoensis Matschie, 1893 -- invalid
  Psammophis trigrammus Günther, 1865 -- valid -- Western Sand Snake
  Psammophis trinasalis Werner, 1902 -- valid -- Fork-marked Sand Snake
  Psammophis zambiensis Hughes, 2002 -- valid -- Zambian Whip Snake
  Psammophylax acutus (Günther, 1888) -- valid -- Beaked Skaapsteker, Striped Beaked Snake
  Psammophylax acutus acutus (Günther, 1888) -- valid
  Psammophylax acutus jappi (Broadley, 1971) -- valid
  Psammophylax acutus togoensis (Matschie, 1893) -- invalid
  Psammophylax multisquamis (Loveridge, 1932) -- valid
  Psammophylax rhombeatus (Linnaeus, 1758) -- valid -- Spotted Skaapsteker, Rhombic Skaapsteker
  Psammophylax togoensis (Matschie, 1893) -- valid
  Psammophylax tritaeniatus (Günther, 1868) -- valid -- Striped Skaapsteker, Three-lined Grass Snake
  Psammophylax tritaeniatus subniger Laurent, 1956 -- valid
  Psammophylax tritaeniatus tritaeniatus (Günther, 1868) -- valid
  Psammophylax tritaeniatus vanoyei Laurent, 1956 -- valid
  Psammophylax variabilis Günther, 1893 -- valid -- Grey-bellied Skaapsteker, Grey-bellied Grass Snake
  Psammophylax viperinus Bocage, 1873 -- invalid
  Pseudalsophis biserialis (Günther, 1860) -- valid -- Galapagos Racer
  Pseudalsophis biserialis biserialis (Günther, 1860) -- valid
  Pseudalsophis biserialis eibli (Mertens, 1960) -- valid
  Pseudalsophis dorsalis (Steindachner, 1876) -- valid
  Pseudalsophis dorsalis helleri (Van Denburgh, 1912) -- invalid
  Pseudalsophis elegans (Tschudi, 1845) -- valid
  Pseudalsophis elegans elegans (Tschudi, 1845) -- valid
  Pseudalsophis elegans rufodorsatus (Günther, 1858) -- valid
  Pseudalsophis hoodensis (Van Denburgh, 1912) -- valid
  Pseudalsophis occidentalis (Van Denburgh, 1912) -- valid
  Pseudalsophis slevini (Van Denburgh, 1912) -- valid -- Banded Galapagos Snake
  Pseudalsophis steindachneri (Van Denburgh, 1912) -- valid -- Striped Galapagos Snake
  Pseudaspidinae Cope, 1893 -- valid -- African Molesnakes
  Pseudaspis cana (Linnaeus, 1758) -- valid -- Mole Snake
  Pseudechis australis (Gray, 1842) -- valid -- King Brown, Mulga Snake
  Pseudechis butleri L. A. Smith, 1982 -- valid -- Spotted Mulga Snake, Butler's Snake
  Pseudechis colletti Boulenger, 1902 -- valid -- Collett's Snake
  Pseudechis guttata De Vis, 1905 -- invalid
  Pseudechis guttatus De Vis, 1905 -- valid -- Spotted Black Snake, Blue-bellied Black Snake
  Pseudechis pailsei (Hoser, 1998) -- valid -- False King Brown Snake
  Pseudechis pailsi (Hoser, 1998) -- invalid
  Pseudechis papuanus W. C. H. Peters and Doria, 1878 -- valid -- Papuan Blacksnake
  Pseudechis porphyriacus (Shaw, 1794) -- valid -- Red-bellied Black Snake, Australian Black Snake
  Pseudechis rossignolii (Hoser, 2000) -- valid
  Pseudechis scutellatus W. C. H. Peters, 1867 -- invalid
  Pseudechis weigeli (Wells and Wellington, 1987) -- valid
  Pseudelaphe flavirufa (Cope, 1867) -- valid -- Culebra-ratonera tropical, Yellow-red Rat Snake
  Pseudelaphe flavirufa flavirufa (Cope, 1867) -- valid
  Pseudelaphe flavirufa matudai (H. M. Smith, 1941) -- valid
  Pseudelaphe flavirufa pardalina (Peters, 1869) -- valid
  Pseudelaphe flavirufa polystichus (H. M. Smith and Williams, 1966) -- invalid
  Pseudelaphe phaescens (Dowling, 1952) -- valid -- Culebra-ratonera yucateca, Yucatan Rat Snake
  Pseudelaps albiceps Boulenger, 1898 -- invalid
  Pseudelaps muelleri lineaticollis Werner, 1903 -- invalid
  Pseudelaps squamulosus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Pseudoboa caerulea Schneider, 1801 -- invalid
  Pseudoboa carinata Schneider, 1801 -- invalid
  Pseudoboa coronata Schneider, 1801 -- valid -- Crowned False Boa
  Pseudoboa fasciata Schneider, 1801 -- invalid
  Pseudoboa haasi (Boettger, 1905) -- valid -- Paraná False Boa
  Pseudoboa martinsi Zaher, Oliveira and Franco, 2008 -- valid
  Pseudoboa neuwiedii (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Coal Snake, Neuwied's False Boa
  Pseudoboa nigra (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Black False Boa
  Pseudoboa serrana Morato, Moura-Leite, Prudente and Bérnils, 1995 -- valid
  Pseudoboodon boehmei Rasmussen and Largen, 1992 -- valid -- Böhme's Ethiopian Snake
  Pseudoboodon gascae Peracca, 1897 -- valid -- Gasca's Ethiopian Snake
  Pseudoboodon lemniscatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Striped Ethiopian Snake, Banded Snake
  Pseudoboodon sandfordorum Spawls, 2004 -- valid -- Sandford's Ethiopian Snake
  Pseudocalotes Fitzinger, 1843 -- valid
  Pseudocalotes andamanensis (Boulenger, 1891) -- valid -- Green Crestless Forest Lizard
  Pseudocalotes austeniana (Annandale, 1908) -- valid -- Abor Hills Agama
  Pseudocalotes brevipes (Werner, 1904) -- valid -- Vietnam False Bloodsucker
  Pseudocalotes cybelidermus Harvey, Hamidy, Kurniawan, Shaney and E. N. Smith, 2014 -- valid -- Purple-throated False Garden Lizard
  Pseudocalotes dringi Hallermann and Böhme, 2000 -- valid -- Dring's False Garden Lizard
  Pseudocalotes drogon L. L. Grismer, Quah, Wood, Anuar, Muin, Davis, Murdoch, J. L. Grismer, Cota and Cobos, 2016 -- valid -- Drogon's False Garden Lizard
  Pseudocalotes flavigula (M. A. Smith, 1924) -- valid -- Malaya False Bloodsucker
  Pseudocalotes floweri (Boulenger, 1912) -- valid -- Thai False Bloodsucker
  Pseudocalotes guttalineatus Harvey, Hamidy, Kurniawan, Shaney and E. N. Smith, 2014 -- valid -- Dash-lined False Garden Lizard
  Pseudocalotes kakhienensis (Anderson, 1879) -- valid -- Kakhyen Hills Spiny Lizard
  Pseudocalotes khaonanensis Chan-Ard, Cota, Makchai and Laoteow, 2008 -- valid
  Pseudocalotes kingdonwardi (M. A. Smith, 1935) -- valid -- Kingdonward's Bloodsucker
  Pseudocalotes kingdonwardi bapoensis (Yang and Su, 1979) -- valid
  Pseudocalotes kingdonwardi kingdonwardi (M. A. Smith, 1935) -- valid
  Pseudocalotes larutensis Hallermann and McGuire, 2001 -- valid -- Bukit Larut False Garden Lizard
  Pseudocalotes microlepis (Boulenger, 1888) -- valid -- Burmese False Bloodsucker
  Pseudocalotes poilani (Bourret, 1939) -- valid -- Laotian False Bloodsucker
  Pseudocalotes rhaegal L. L. Grismer, Quah, Wood, Anuar, Muin, Davis, Murdoch, J. L. Grismer, Cota and Cobos, 2016 -- valid -- Rhaegal's False Garden Lizard
  Pseudocalotes rhammanotus Harvey, Hamidy, Kurniawan, Shaney and E. N. Smith, 2014 -- valid -- Stitched-back False Garden Lizard
  Pseudocalotes saravacensis Inger and Stuebing, 1994 -- valid
  Pseudocalotes tympanistriga (Gray, 1831) -- valid -- Indonesian False Bloodsucker
  Pseudocalotes viserion L. L. Grismer, Quah, Wood, Anuar, Muin, Davis, Murdoch, J. L. Grismer, Cota and Cobos, 2016 -- valid -- Viserion's False Garden Lizard
  Pseudocalotes ziegleri Hallermann, Truong, Orlov and Ananjeva, 2010 -- valid -- Ziegler's Tree Lizard
  Pseudocerastes fieldi K. P. Schmidt, 1930 -- valid -- Field's Horned Viper
  Pseudocerastes persicus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Persian Horned Viper
  Pseudocerastes urarachnoides Bostanchi, S. C. Anderson, Kami and Papenfuss, 2006 -- valid
  Pseudocophotis Manthey in Manthey and Grossmann, 1997 -- valid
  Pseudocophotis kontumensis Ananjeva, Orlov, Truong and Nazarov, 2007 -- valid
  Pseudocophotis sumatrana (Hubrecht, 1879) -- valid
  Pseudoeryx mimeticus Cope, 1885 -- invalid
  Pseudoeryx plicatilis (Linnaeus, 1758) -- valid -- South American Pond Snake
  Pseudoeryx plicatilis mimeticus Cope, 1885 -- valid
  Pseudoeryx plicatilis plicatilis (Linnaeus, 1758) -- valid
  Pseudoeryx relictualis Schargel, Rivas-Fuenmayor, Barros, Péfaur and Navarette, 2007 -- valid -- South American Pond Snake
  Pseudoficimia frontalis (Cope, 1864) -- valid -- Culebra ilamacoa, False Ficimia
  Pseudohaje goldii (Boulenger, 1895) -- valid -- Golds Forest Cobra, African Tree Cobra, Goldie's Tree Cobra, Goldie's False Cobra
  Pseudohaje nigra Günther, 1858 -- valid -- Black Tree Cobra, Hoodless Cobra
  Pseudoleptodeira latifasciata (Günther, 1894) -- valid -- Culebra-ojo de gato-falsa cabeza roja, False Cat-eyed Snake
  Pseudoleptodeira uribei Bautista and H. M. Smith, 1992 -- invalid
  Pseudonaja affinis Günther, 1872 -- valid -- Dugite
  Pseudonaja affinis affinis Günther, 1872 -- valid
  Pseudonaja affinis exilis Storr, 1989 -- valid
  Pseudonaja affinis tanneri Worrell, 1961 -- valid
  Pseudonaja aspidorhyncha (McCoy, 1879) -- valid
  Pseudonaja guttata (Parker, 1926) -- valid -- Speckled Brown Snake, Spotted Brown Snake
  Pseudonaja inframacula (Waite, 1925) -- valid -- Peninsula Brown Snake
  Pseudonaja ingrami (Boulenger, 1908) -- valid -- Ingram's Brown Snake
  Pseudonaja mengdeni Wells and Wellington, 1985 -- valid -- Gwardar, Western Brownsnake
  Pseudonaja modesta (Günther, 1872) -- valid -- Ringed Brown Snake
  Pseudonaja nuchalis Günther, 1858 -- valid -- Northern Brown Snake
  Pseudonaja textilis (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Eastern Brown Snake
  Pseudonaja textilis pughi Hoser, 2003 -- valid
  Pseudonaja textilis textilis (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid
  Pseudopareas vagrans Dunn, 1923 -- invalid
  Pseudorabdion Jan, 1862 -- valid
  Pseudorabdion albonuchalis (Günther, 1896) -- valid
  Pseudorabdion ater (Taylor, 1922) -- valid
  Pseudorabdion collaris (Mocquard, 1892) -- valid -- Common Collared Snake
  Pseudorabdion eiselti Inger and Leviton, 1961 -- valid
  Pseudorabdion longiceps (Cantor, 1847) -- valid -- Dwarf Reed Snake, Cantor's Dwarf Reed Snake
  Pseudorabdion mcnamarae (Taylor, 1917) -- valid -- McNamara's Burrowing Snake
  Pseudorabdion modiglianii Doria and Petri, 2010 -- valid -- Modigliani's Dwarf Reed Snake
  Pseudorabdion montanum Leviton and Brown, 1959 -- valid -- Mountain Burrowing Snake
  Pseudorabdion oxycephalum (Günther, 1858) -- valid -- Günther's Dwarf Reed Snake
  Pseudorabdion sarasinorum (Müller, 1895) -- valid -- Sarasin's Reed Snake
  Pseudorabdion saravacense (Shelford, 1901) -- valid
  Pseudorabdion sirambense Doria and Petri, 2010 -- valid
  Pseudorabdion talonuran Brown, Leviton and Sison, 1999 -- valid -- Panay Island Reed Snake
  Pseudorabdion taylori Leviton and Brown, 1959 -- valid -- Taylor's Burrowing Snake
  Pseudorabdion torquatum (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid
  Pseudorhabdium mcnamarae Taylor, 1917 -- invalid
  Pseudotomodon trigonatus (Leybold, 1873) -- valid -- False Tomodon Snake
  Pseudotrapelus Fitzinger, 1843 -- valid
  Pseudotrapelus aqabensis Melnikov, Nazarov, Ananjeva and Disi, 2012 -- valid
  Pseudotrapelus chlodnickii Melnikov, Smielowski, Melnikova, Nazarov and Anajeva, 2015 -- valid
  Pseudotrapelus dhofarensis Melnikov and Pierson, 2012 -- valid
  Pseudotrapelus jensvindumi Melnikov, Ananjeva and Papenfuss, 2013 -- valid
  Pseudotrapelus neumanni (Tornier, 1905) -- valid -- Neumann's Agama
  Pseudotrapelus sinaitus (Heyden, 1827) -- valid -- Sinai Agama
  Pseudotrapelus sinaitus sinaitus (Heyden, 1827) -- valid
  Pseudotrapelus sinaitus werneri Moravec, 2002 -- valid
  Pseudoxenodon bambusicola Vogt, 1922 -- valid -- Bamboo Snake
  Pseudoxenodon baramensis (M. A. Smith, 1921) -- valid -- Baramen Bamboo Snake
  Pseudoxenodon fukiensis Pope, 1928 -- invalid
  Pseudoxenodon inornatus (F. Boie, 1827) -- valid -- Javanese False Cobra, Dull Bamboo Snake
  Pseudoxenodon inornatus buettikoferi Brongersma and Helle, 1951 -- valid
  Pseudoxenodon inornatus inornatus (F. Boie, 1827) -- valid
  Pseudoxenodon inornatus jacobsonii Lidth de Jeude, 1922 -- valid
  Pseudoxenodon jacobsonii Lidth de Jeude, 1922 -- invalid
  Pseudoxenodon karlschmidti Pope, 1928 -- valid -- Chinese Bamboo Snake
  Pseudoxenodon karlschmidti karlschmidti Pope, 1935 -- valid
  Pseudoxenodon karlschmidti popei Gressitt, 1936 -- valid
  Pseudoxenodon karlschmidti sinii Fan, 1931 -- valid
  Pseudoxenodon macrops (Blyth, 1855) -- valid -- Big-eyed Bamboo Snake, Mock Cobra, Large-eyed Bamboo Snake
  Pseudoxenodon macrops fukiensis Pope, 1928 -- valid
  Pseudoxenodon macrops macrops (Blyth, 1855) -- valid
  Pseudoxenodon macrops sinensis Boulenger, 1904 -- valid
  Pseudoxenodon popei Gressitt, 1936 -- invalid
  Pseudoxenodon sinensis Boulenger, 1904 -- invalid
  Pseudoxenodon sinii Fan, 1931 -- invalid
  Pseudoxenodon stejnegeri Barbour, 1908 -- valid -- Stejneger's Bamboo Snake
  Pseudoxenodon stejnegeri stejnegeri Barbour, 1908 -- valid
  Pseudoxenodon stejnegeri striaticaudatus Pope, 1928 -- valid
  Pseudoxenodon striaticaudatus Pope, 1928 -- invalid
  Pseudoxenodontinae McDowell, 1987 -- valid
  Pseudoxyrhophiinae Dowling, 1975 -- valid -- Madagascan Snakes
  Pseudoxyrhopus ambreensis Mocquard, 1895 -- valid -- Ambre Brook Snake
  Pseudoxyrhopus analabe Nussbaum, Andreone and Raxworthy, 1998 -- valid
  Pseudoxyrhopus ankafinaensis Raxworthy and Nussbaum, 1994 -- valid
  Pseudoxyrhopus heterurus (Jan, 1863) -- valid -- Night Brook Snake
  Pseudoxyrhopus imerinae (Günther, 1890) -- valid -- Plateau Brook Snake
  Pseudoxyrhopus kely Raxworthy and Nussbaum, 1994 -- valid
  Pseudoxyrhopus microps Günther, 1881 -- valid -- Brown Brook Snake
  Pseudoxyrhopus oblectator Cadle, 1999 -- valid
  Pseudoxyrhopus occipitalis Boulenger, 1896 -- invalid
  Pseudoxyrhopus quinquelineatus (Günther, 1881) -- valid -- Striped Brook Snake
  Pseudoxyrhopus sokosoko Raxworthy and Nussbaum, 1994 -- valid
  Pseudoxyrhopus tritaeniatus Mocquard, 1894 -- valid
  Pseustes cinnamomeus (Wagler, 1824) -- invalid
  Psomophis genimaculatus (Boettger, 1885) -- valid -- Spirit Diminutive Snake, Spirit Ground Snake
  Psomophis joberti (Sauvage, 1884) -- valid
  Psomophis obtusus (Cope, 1864) -- valid -- Wide Ground Snake
  Ptyas carinata (Günther, 1858) -- valid -- Keeled Rat Snake
  Ptyas dhumnades (Cantor, 1842) -- valid
  Ptyas dipsas (Schlegel, 1837) -- valid -- Sulawesi Black Racer
  Ptyas fusca (Günther, 1858) -- valid -- White-bellied Rat Snake, Brown Rat Snake
  Ptyas infrasignatus Günther, 1882 -- invalid
  Ptyas korros (Schlegel, 1837) -- valid -- Indo-Chinese Rat Snake, Chinese Ratsnake
  Ptyas luzonensis (Günther, 1873) -- valid -- Smooth-Scaled Mountain Rat Snake
  Ptyas mucosa (Linnaeus, 1758) -- valid -- Dhaman, Oriental Ratsnake
  Ptyas nigromarginata (Blyth, 1854) -- valid -- Black-bordered Rat Snake, Green Rat Snake
  Ptychophis flavovirgatus Gomes, 1915 -- valid -- Fanged Water Snake
  Ptyctolaemus W. C. H. Peters, 1864 -- valid
  Ptyctolaemus collicristatus Schulte and Vindum, 2004 -- valid
  Ptyctolaemus gularis (W. C. H. Peters, 1864) -- valid -- Green Fan-throated Lizard
  Pythonodipsas carinata Günther, 1868 -- valid -- Western Keeled Snake
  Rabdion A. M. C. Duméril, 1853 -- valid
  Rabdion forsteni A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Forsten's Pointed Snake
  Rabdion grovesi Amarasinghe, Vogel, McGuire, Sidik, Supriatna and Ineich, 2015 -- valid -- Groves' Pointed Snake
  Rabdion torquatum A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Rabdion waandersi Bleeker, 1860 -- invalid
  Rachiodon abyssinus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Rankinia Gray, 1841 -- valid
  Rankinia diemensis (Gray, 1841) -- valid -- Mountain Heath Dragon, Mountain Dragon
  Regina Baird and Girard, 1853 -- valid -- Crayfish Snakes, Crawfish Snakes
  Regina grahamii Baird and Girard, 1853 -- valid -- Graham's Crayfish Snake, Graham's Crawfish Snake
  Regina septemvittata (Say, 1825) -- valid -- Queen Snake, Queensnake
  Regina valida Kennicott, 1860 -- invalid
  Rhabdodon fuscus Fleischmann, 1831 -- invalid
  Rhabdophis Fitzinger, 1843 -- valid
  Rhabdophis adleri Zhao, 1997 -- valid
  Rhabdophis akraios Doria, Petri, Bellati, Tiso and Pistarino, 2013 -- valid -- Singalang Keelback
  Rhabdophis angeli (Bourret, 1934) -- invalid -- Angel's Keelback
  Rhabdophis auriculata (Günther, 1858) -- invalid -- White-lined Water Snake
  Rhabdophis auriculatus auriculatus (Günther, 1858) -- valid
  Rhabdophis auriculatus myersi Leviton, 1970 -- valid
  Rhabdophis barbouri (Taylor, 1922) -- valid -- Barbour's Water Snake
  Rhabdophis callichroma (Bourret, 1934) -- invalid -- Bavi Keelback
  Rhabdophis callistus (Günther, 1873) -- valid -- Boettger's Keelback
  Rhabdophis chrysargoides (Günther, 1858) -- valid -- Günther's Keelback
  Rhabdophis chrysargos (Schlegel, 1837) -- valid -- Specklebelly Keelback
  Rhabdophis conspicillatus (Günther, 1872) -- valid -- Red-bellied Keelback
  Rhabdophis guangdongensis Zhu, Wang, Takeuichi and Zhao, 2014 -- valid -- Guangdong Keelback
  Rhabdophis himalayanus (Günther, 1864) -- valid -- Orange-collared Keelback
  Rhabdophis leonardi (Wall, 1923) -- valid -- Leonard's Keelback
  Rhabdophis lineatus (Peters, 1861) -- valid
  Rhabdophis murudensis (M. A. Smith, 1925) -- valid -- Gunung Murud Keelback, Muruden Keelback
  Rhabdophis nigrocinctus (Blyth, 1856) -- valid -- Green Keelback, Banded Keelback
  Rhabdophis nuchalis (Boulenger, 1891) -- valid -- Hubei Keelback
  Rhabdophis pentasupralabialis Jiang and Zhao, 1983 -- valid
  Rhabdophis spilogaster (F. Boie, 1827) -- valid -- Boie's Keelback
  Rhabdophis subminiatus (Schlegel, 1837) -- valid -- Red-necked Keelback
  Rhabdophis subminiatus helleri (Schmidt, 1925) -- valid
  Rhabdophis subminiatus subminiatus (Schlegel, 1837) -- valid
  Rhabdophis swinhonis (Günther, 1868) -- valid -- Taiwan Keelback
  Rhabdophis tigrinus (F. Boie, 1826) -- valid -- Tiger Keelback
  Rhabdophis tigrinus formosanus (Maki, 1931) -- valid
  Rhabdophis tigrinus tigrinus (F. Boie, 1826) -- valid
  Rhabdops Boulenger, 1893 -- valid
  Rhabdops bicolor (Blyth, 1854) -- valid -- Brown Trapezoid Snake, Two-colored Forestsnake
  Rhabdops olivaceus (Beddome, 1863) -- valid -- Olive Trapezoid Snake
  Rhabdosoma badium multicinctus Jan, 1865 -- invalid
  Rhabdosoma crassicaudatum A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Rhabdosoma duboisi Boulenger, 1880 -- invalid
  Rhabdosoma elaps Günther, 1858 -- invalid
  Rhabdosoma leporinum Günther, 1858 -- invalid
  Rhabdosoma microrhynchum Cope, 1868 -- invalid
  Rhabdosoma mutitorques Cope, 1885 -- invalid
  Rhabdosoma occipitoalbum Jan, 1862 -- invalid
  Rhabdosoma oxycephalum Günther, 1858 -- invalid
  Rhabdosoma peruvianum Jan, 1862 -- invalid
  Rhabdosoma poeppigi Jan, 1862 -- invalid
  Rhabdosoma semidoliatum A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Rhabdosoma torquatum A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Rhabdosoma zebrinum Jan, 1862 -- invalid
  Rhachidelus brazili Boulenger, 1908 -- valid -- Brazilian Bird Snake
  Rhadinaea anachoreta E. N. Smith and Campbell, 1994 -- invalid
  Rhadinaea antioquiensis Dunn, 1943 -- invalid
  Rhadinaea bogertorum Myers, 1974 -- valid -- Culebra-café oaxaqueña, Oaxacan Graceful Brown Snake
  Rhadinaea calligaster (Cope, 1876) -- valid -- Thick Graceful Brown Snake
  Rhadinaea chrysostoma Cope, 1868 -- invalid
  Rhadinaea cuneata Myers, 1974 -- valid -- Culebra-café veracruzana, Veracruz Graceful Brown Snake
  Rhadinaea decorata (Günther, 1858) -- valid -- Culebra-café adornada, Adorned Graceful Brown Snake
  Rhadinaea elegantissima Koslowsky, 1896 -- invalid
  Rhadinaea festae Peracca, 1897 -- invalid
  Rhadinaea flavilata (Cope, 1871) -- valid -- Pine Woods Snake, Pine Woods Littersnake
  Rhadinaea forbesi H. M. Smith, 1942 -- valid -- Culebra-café de Forbes, Forbes' Graceful Brown Snake
  Rhadinaea frenata Werner, 1909 -- invalid
  Rhadinaea fulviceps Cope, 1886 -- invalid
  Rhadinaea fulvivittis Cope, 1875 -- valid -- Culebra-café listada, Ribbon Graceful Brown Snake
  Rhadinaea gaigeae Bailey, 1937 -- valid -- Culebra-café de Gaige, Gaige's Pine Forest Snake
  Rhadinaea guentheri Dunn, 1938 -- invalid
  Rhadinaea hesperia Bailey, 1940 -- valid -- Culebra-café de Occidente, Western Graceful Brown Snake
  Rhadinaea kanalchutchan Mendelson and Kizirian, 1995 -- invalid
  Rhadinaea laureata (Günther, 1868) -- valid -- Culebra-café coronada, Crowned Graceful Brown Snake
  Rhadinaea macdougalli H. M. Smith and Langebartel, 1949 -- valid -- Culebra-café de MacDougall, MacDougall's Graceful Brown Snake
  Rhadinaea marcellae Taylor, 1949 -- valid -- Culebra-café de Marcella, Marcella's Graceful Brown Snake
  Rhadinaea modesta Koslowsky, 1896 -- invalid
  Rhadinaea montana H. M. Smith, 1944 -- valid -- Culebra-café de Nuevo León, Nuevo Leon Graceful Brown Snake
  Rhadinaea myersi Rossman, 1965 -- valid -- Culebra-café de Meyer, Myers' Graceful Brown Snake
  Rhadinaea obtusa Cope, 1864 -- invalid
  Rhadinaea omiltemana (Günther, 1894) -- valid -- Culebra-café guerrerense, Guerreran Pine Woods Snake
  Rhadinaea orina Griffin, 1916 -- invalid
  Rhadinaea pegosalyta McCranie, 2006 -- invalid
  Rhadinaea poecilopogon Cope, 1863 -- invalid
  Rhadinaea pulveriventris Boulenger, 1896 -- valid -- Common Graceful Brown Snake
  Rhadinaea quinquelineata Cope, 1886 -- valid -- Culebra-café poblana, Pueblan Graceful Brown Snake
  Rhadinaea rogerromani Köhler and McCranie, 1999 -- invalid
  Rhadinaea sargenti Dunn and Bailey, 1939 -- valid -- Sargent's Graceful Brown Snake
  Rhadinaea stadelmani Stuart and Bailey, 1941 -- valid -- Stadelman's Pine Woods Snake
  Rhadinaea steinbachi Boulenger, 1905 -- invalid
  Rhadinaea subocularis Boulenger, 1902 -- invalid
  Rhadinaea taeniata (Peters, 1863) -- valid -- Culebra-café de pino-encino, Pine-Oak Snake
  Rhadinaea taeniata aemula Bailey, 1940 -- valid
  Rhadinaea taeniata taeniata (Peters, 1863) -- valid
  Rhadinaea tolpanorum Holm and Cruz, 1994 -- invalid
  Rhadinaea tristriata Rendahl and Vestergren, 1941 -- invalid
  Rhadinaea vermiculaticeps (Cope, 1860) -- valid -- Vermiculate Graceful Brown Snake
  Rhadinaea zilchi Mertens, 1952 -- invalid
  Rhadinella anachoreta (E. N. Smith and Campbell, 1994) -- valid
  Rhadinella donaji Campbell, 2015 -- valid -- Donaji's Slender Leaflitter Snake
  Rhadinella dysmica Campillo, Dávila-Galavíz, Flores-Villela and Campbell, 2016 -- valid -- Guerrero Slender Leaf Litter Snake
  Rhadinella godmani (Günther, 1865) -- valid -- Godman's Graceful Brown Snake, Culebra-café de Godman
  Rhadinella godmani godmani (Günther, 1865) -- valid
  Rhadinella godmani zilchi (Mertens, 1952) -- valid
  Rhadinella hannsteini (Stuart, 1949) -- valid -- Hannstein's Spot-lipped Snake, Culebra-café labios manchados
  Rhadinella hempsteadae (Stuart and Bailey, 1941) -- valid -- Culebra-café de Hempstead, Hempstead's Pine Woods Snake
  Rhadinella kanalchutchan (Mendelson and Kizirian, 1995) -- valid
  Rhadinella kinkelini (Boettger, 1898) -- valid -- Kinkelin Graceful Brown Snake
  Rhadinella lachrymans (Cope, 1870) -- valid -- Culebra-café llorona, Tearful Pine-Oak Snake
  Rhadinella montecristi (Mertens, 1952) -- valid -- Monte Cristi Graceful Brown Snake
  Rhadinella pegosalyta (McCranie, 2006) -- valid
  Rhadinella pilonaorum (Stuart, 1954) -- valid -- Stuart's Graceful Brown Snake
  Rhadinella posadasi (Slevin, 1936) -- valid -- Culebra-café de Posada, Posada's Graceful Brown Snake
  Rhadinella rogerromani (Köhler and McCranie, 1999) -- valid
  Rhadinella schistosa H. M. Smith, 1941 -- valid -- Brokencollar Graceful Brown Snake, Culebra-café collar-incompleto
  Rhadinella serperaster (Cope, 1871) -- valid
  Rhadinella tolpanorum (Holm and Cruz, 1994) -- valid
  Rhadinophanes monticola Myers and Campbell, 1981 -- valid -- Culebra de montaña, Graceful Mountain Snake
  Rhadinophis frenatus (Gray, 1853) -- invalid
  Rhadinophis prasinus (Blyth, 1854) -- invalid
  Rhagerhis moilensis (Reuss, 1834) -- valid -- Moila Snake
  Rhagerrhis tritaeniatus Günther, 1868 -- invalid
  Rhamnophis aethiopissa Günther, 1862 -- valid -- Splendid Dagger-tooth Tree Snake, Large-eyed Green Treesnake
  Rhamnophis aethiopissa aethiopissa Günther, 1862 -- valid
  Rhamnophis aethiopissa elgonensis Loveridge, 1929 -- valid
  Rhamnophis aethiopissa ituriensis Schmidt, 1923 -- valid
  Rhamnophis batesii (Boulenger, 1908) -- valid -- Spotted Dagger-tooth Tree Snake
  Rhamnophis ituriensis Schmidt, 1923 -- invalid
  Rhamphiophis acutus jappi Broadley, 1971 -- invalid
  Rhamphiophis oxyrhynchus (Reinhardt, 1843) -- valid
  Rhamphiophis rostratus Peters, 1854 -- valid -- Rufous Beaked Snake
  Rhamphiophis rubropunctatus (Fischer, 1884) -- valid -- Red Beaked Snake, Red-spotted Beaked Snake
  Rhampholeon acuminatus Mariaux and Tilbury, 2006 -- valid -- Nguru Pygmy Chameleon
  Rhampholeon beraduccii Mariaux and Tilbury, 2006 -- valid -- Beraducci's Pygmy Chameleon
  Rhampholeon boulengeri Steindachner, 1911 -- valid -- Boulenger's Pygmy Chameleon
  Rhampholeon bruessoworum Branch, Bayliss and Tolley, 2014 -- valid -- Mount Inago Pygmy Chameleon
  Rhampholeon chapmanorum Tilbury, 1992 -- valid -- Chapmans' Pygmy Chameleon
  Rhampholeon gorongosae Broadley, 1971 -- valid
  Rhampholeon hattinghi Tilbury and Tolley, 2015 -- valid
  Rhampholeon marshalli Boulenger, 1906 -- valid -- Marshall's Stumptail Chameleon
  Rhampholeon maspictus Branch, Bayliss and Tolley, 2014 -- valid -- Mount Mabu Pygmy Chameleon
  Rhampholeon moyeri Menegon, Salvidio and Tilbury, 2002 -- valid -- Moyer's Pygmy Chameleon
  Rhampholeon nchisiensis (Loveridge, 1953) -- valid -- South African Stumptail Chameleon
  Rhampholeon nebulauctor Branch, Bayliss and Tolley, 2014 -- valid -- Mount Chiperone Pygmy Chameleon
  Rhampholeon platyceps Günther, 1893 -- valid -- Mount Mulanje Pygmy Chameleon, Malawi Stumptail Chameleon
  Rhampholeon spectrum (Buchholz, 1874) -- valid -- Cameroon Stumptail Chameleon
  Rhampholeon spinosus (Matschie, 1892) -- valid -- Rosette-nosed Pygmy Chameleon
  Rhampholeon temporalis (Matschie, 1892) -- valid -- Usambara Stumptail Chameleon
  Rhampholeon tilburyi Branch, Bayliss and Tolley, 2014 -- valid -- Mount Namuli Pygmy Chameleon
  Rhampholeon uluguruensis Tilbury and Emmrich, 1996 -- valid -- Uluguru Pygmy Chameleon
  Rhampholeon viridis Mariaux and Tilbury, 2006 -- valid -- Green Pygmy Chameleon
  Rhegnops sargii Fischer, 1885 -- invalid
  Rhegnops visoninus Cope, 1866 -- invalid
  Rhinechis amaliae Boettger, 1881 -- invalid
  Rhinechis scalaris (Schinz, 1822) -- invalid
  Rhinelaps fasciolatus Günther, 1872 -- invalid
  Rhinobothryum bovallii Andersson, 1916 -- valid
  Rhinobothryum lentiginosum (Scopoli, 1785) -- valid -- Amazon Banded Snake
  Rhinocalamus dimidiatus Günther, 1888 -- invalid
  Rhinocalamus rodhaini de Witte, 1930 -- invalid
  Rhinocalamus ventrimaculata Roux, 1907 -- invalid
  Rhinocheilus lecontei Baird and Girard, 1853 -- valid -- Long-nosed Snake, Culebra narigona, Longnose Snake, Western Long-nosed Snake
  Rhinoplocephalus bicolor F. Müller, 1885 -- valid -- Square-nosed Snake, Muller's Snake
  Rhinoplocephalus spectabilis bushi Storr, 1988 -- invalid
  Rhinosimus guerini A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Rhinostoma iglesiasi Gomes, 1915 -- invalid
  Rhinostoma vittatum Boulenger, 1896 -- invalid
  Rhynchelaps anomalus Sternfeld, 1919 -- invalid
  Rhynchelaps woodjonesii Thomson, 1934 -- invalid
  Rhynchocalamus arabicus Schmidt, 1933 -- valid -- Aden Kukri Snake
  Rhynchocalamus melanocephalus (Jan, 1862) -- valid -- Palestine Kukri Snake
  Rhynchocalamus melanocephalus satunini (Nikolsky, 1899) -- invalid
  Rhynchocalamus satunini (Nikolsky, 1899) -- valid -- Palestine Kukri Snake
  Rhynchoelaps approximans Glauert, 1954 -- invalid
  Rhynchoelaps campbelli Kinghorn, 1929 -- invalid
  Rhynchoelaps roperi Kinghorn, 1931 -- invalid
  Rhynchonyx ambiniger Peters, 1869 -- invalid
  Rhynchonyx ambiniger vittatus Cope, 1887 -- invalid
  Rhynchophis boulengeri Mocquard, 1897 -- invalid
  Rieppeleon brachyurus (Günther, 1893) -- valid
  Rieppeleon brevicaudatus (Matschie, 1892) -- valid -- Bearded Pygmy Chameleon
  Rieppeleon kerstenii (W. C. H. Peters, 1868) -- valid -- Kenya Stumptail Chameleon
  Rieppeleon kerstenii kerstenii (W. C. H. Peters, 1868) -- valid
  Rieppeleon kerstenii robecchii (Boulenger, 1891) -- valid
  Rodriguesophis chui (Rodrigues, 1993) -- valid
  Rodriguesophis iglesiasi (Gomes, 1915) -- valid -- Gomes' Pampas Snake
  Rodriguesophis scriptorcibatus (Rodrigues, 1993) -- valid
  Saara Gray, 1845 -- valid
  Saara asmussi (Strauch, 1863) -- valid -- Iranian Mastigure
  Saara hardwickii (Gray, 1827) -- valid -- Hardwick's Spiny-tailed Lizard
  Saara loricata (Blanford, 1874) -- valid -- Iraqi Mastigure
  Salea Gray, 1845 -- valid
  Salea anamallayana (Beddome, 1878) -- valid -- Anaimalai Salea, Anaimalai Spiny Lizard
  Salea gularis Blyth in Jerdon, 1854 -- valid
  Salea horsfieldii Gray, 1845 -- valid -- Horsfield's Spiny Lizard, Nilgiri Salea
  Salomonelaps par (Boulenger, 1884) -- valid -- Solomons Coral Snake
  Salvadora bairdi Jan, 1860 -- valid -- Culebra-parchada de Baird, Baird's Patchnose Snake
  Salvadora deserticola Schmidt, 1940 -- valid -- Big Bend Patch-nosed Snake, Culebra-parchada de Big Bend, Big Bend Patchnose Snake
  Salvadora grahamiae Baird and Girard, 1853 -- valid -- Mountain Patch-nosed Snake, Culebra-parchada de montaña, Mountain Patchnose Snake, Eastern Patch-nosed Snake
  Salvadora grahamiae grahamiae Baird and Girard, 1853 -- valid -- Mountain Patchnose Snake, Mountain Patch-nosed Snake
  Salvadora grahamiae lineata Schmidt, 1940 -- valid -- Texas Patch-nosed Snake
  Salvadora grahamiae virgultea Bogert, 1936 -- invalid
  Salvadora hexalepis (Cope, 1867) -- valid -- Western Patch-nosed Snake, Culebra-parchada de cabestrillo, Western Patchnose Snake
  Salvadora hexalepis deserticola Schmidt, 1940 -- invalid -- Big Bend Patch-nosed Snake
  Salvadora hexalepis hexalepis (Cope, 1867) -- valid -- Desert Patchnose Snake, Desert Patch-nosed Snake
  Salvadora hexalepis mojavensis Bogert, 1945 -- valid -- Mojave Patchnose Snake, Mohave Patch-nosed Snake
  Salvadora hexalepis virgultea Bogert, 1936 -- valid -- Coast Patchnose Snake, Coast Patch-nosed Snake
  Salvadora intermedia Hartweg, 1940 -- valid -- Culebra-parchada oaxaqueña, Oaxacan Patchnose Snake
  Salvadora lemniscata (Cope, 1895) -- valid -- Culebra-parchada del Pacífico, Pacific Patchnose Snake
  Salvadora lineata Schmidt, 1940 -- invalid
  Salvadora mexicana (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Culebra-parchada mexicana, Mexican Patchnose Snake
  Saphenophis antioquiensis (Dunn, 1943) -- valid -- Dunn's Saphenophis Snake
  Saphenophis atahuallpae (Steindachner, 1901) -- valid -- Atahuallpa Saphenophis Snake
  Saphenophis boursieri (Jan, 1867) -- valid
  Saphenophis sneiderni Myers, 1973 -- valid -- Saphenophis Snake
  Saphenophis tristriatus (Rendahl and Vestergren, 1941) -- valid
  Sarada darwini Deepak, Karanth, Dutta and Giri in Deepak et al., 2016 -- valid -- Darwin's Large Fan-throated Lizard
  Sarada deccanensis (Jerdon, 1870) -- valid -- Deccan Fan-throated Lizard
  Sarada superba Deepak, Zambre, Bhosale and Giri in Deepak et al., 2016 -- valid -- Superb Large Fan-throated Lizard
  Sator angustus Dickerson, 1919 -- invalid
  Sator grandaevus Dickerson, 1919 -- invalid
  Sauromalus ater A. H. A. Duméril, 1856 -- valid -- Chuckwalla norteña, Common Chuckwalla, Northern Chuckwalla
  Sauromalus ater ater A. H. A. Duméril, 1856 -- valid
  Sauromalus ater multiforminatus Tanner and Avery, 1964 -- valid -- Upper Colorado River Chuckwalla, Glen Canyon Chuckwalla
  Sauromalus ater shawi Cliff, 1958 -- valid
  Sauromalus ater townsendi Dickerson, 1919 -- valid
  Sauromalus ater tumidus Shaw, 1945 -- valid -- Gila Chuckwalla, Arizona Chuckwalla
  Sauromalus hispidus Stejneger, 1891 -- valid -- Chuckwalla espinosa, Spiny Chuckwalla
  Sauromalus interbrachialis Dickerson, 1919 -- invalid
  Sauromalus klauberi Shaw, 1941 -- valid -- Spotted Chuckwalla, Catalina Chuckwalla
  Sauromalus shawi Cliff, 1958 -- invalid
  Sauromalus slevini Van Denburgh, 1922 -- valid -- Chuckwalla de Monserrat, Slevin's Chuckwalla, Monserrat Chuckwalla
  Sauromalus townsendi Dickerson, 1919 -- invalid
  Sauromalus varius Dickerson, 1919 -- valid -- Chuckwalla de San Esteban, Piebald Chuckwalla
  Scaphiodontophis annulatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Culebra-añadida guatemalteca, Guatemala Neckband Snake
  Scaphiodontophis annulatus annulatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid
  Scaphiodontophis annulatus dugandi Roze, 1969 -- valid
  Scaphiodontophis annulatus hondurensis (Schmidt, 1936) -- valid
  Scaphiodontophis annulatus nothus Taylor and H. M. Smith, 1943 -- valid
  Scaphiodontophis nothus Taylor and H. M. Smith, 1943 -- invalid
  Scaphiodontophis venustissimus (Günther, 1893) -- valid -- Common Neckband Snake
  Scaphiophis albopunctatus Peters, 1870 -- valid -- African Shovel-nosed Snake
  Scaphiophis raffreyi Bocourt, 1875 -- valid -- Ethiopian Hook-nosed Snake
  Sceloporinae -- valid
  Sceloporus acanthinus Bocourt, 1873 -- valid -- Lagartija-escamosa de Boucourt, Bocourt's Spiny Lizard
  Sceloporus adleri H. M. Smith and Savitzky, 1974 -- valid -- Lagartija-escamosa de Adler, Adler's Spiny Lizard
  Sceloporus aeneus Wiegmann, 1828 -- valid -- Lagartija-escamosa llanera, Southern Bunchgrass Lizard
  Sceloporus aeneus aeneus Wiegmann, 1828 -- valid -- Southern Bunchgrass Lizard, Black-bellied Bunchgrass Lizard
  Sceloporus aeneus subniger Poglayen and H. M. Smith, 1958 -- valid -- Tolucan Bunchgrass Lizard, Plateau Bunchgrass Lizard
  Sceloporus albiventris H. M. Smith, 1939 -- valid -- White-bellied Rough Lizard
  Sceloporus anahuacus Lara-Góngora, 1983 -- valid -- Lagartija-escamosa de Anáhuac, Anahuacan Bunchgrass Lizard
  Sceloporus angustus (Dickerson, 1919) -- valid -- Lagartija-escamosa angosta, Santa Cruz Island Sator
  Sceloporus arenicolus Degenhardt and Jones, 1972 -- valid -- Dunes Sagebrush Lizard
  Sceloporus asper Boulenger, 1897 -- valid -- Lagartija-escamosa de Boulenger, Asperous Spiny Lizard
  Sceloporus aurantius Grummer and Bryson, 2014 -- valid -- Southern Occidental Bunchgrass Lizard
  Sceloporus aureolus H. M. Smith, 1942 -- valid -- Eastern Cleft Spiny Lizard, Southern Crevice Spiny Lizard
  Sceloporus becki Van Denburgh, 1905 -- valid -- Island Fence Lizard
  Sceloporus bicanthalis H. M. Smith, 1937 -- valid -- Lagartija-escamosa transvolcánica, Trans Volcanic Bunchgrass Lizard
  Sceloporus bimaculosus Phelan and Brattstrom, 1955 -- valid -- Twin-spotted Spiny Lizard
  Sceloporus bulleri Boulenger, 1894 -- valid -- Lagartija-escamosa de Buller, Buller's Spiny Lizard
  Sceloporus caeruleus H. M. Smith, 1936 -- valid -- Blue Ornate Spiny Lizard
  Sceloporus carinatus H. M. Smith, 1936 -- valid -- Lagartija-escamosa aquillada, Keeled Spiny Lizard
  Sceloporus cautus H. M. Smith, 1938 -- valid -- Lagartija-escamosa tímida, Shy Spiny Lizard
  Sceloporus chaneyi Liner and Dixon, 1992 -- valid -- Peña Nevada Agave Lizard, Chaney's Spiny Lizard
  Sceloporus chrysostictus Cope, 1866 -- valid -- Lagartija-escamosa pintas amarillas, Yellow-spotted Spiny Lizard
  Sceloporus clarkii Baird and Girard, 1852 -- valid -- Clark's Spiny Lizard
  Sceloporus clarkii boulengeri Stejneger, 1893 -- valid -- Southern Clark's Lizard
  Sceloporus clarkii clarkii Baird and Girard, 1852 -- valid -- Sonoran Spiny Lizard
  Sceloporus clarkii uriquensis Tanner and Robison, 1959 -- valid -- El Fuerte Basin Spiny Lizard
  Sceloporus clarkii vallaris Shannon and Urbano, 1954 -- valid -- Plateau Spiny Lizard
  Sceloporus consobrinus Baird and Girard in Marcy and McClellan, 1854 -- valid -- Prairie Lizard, Southern Prairie Lizard
  Sceloporus couchii Baird, 1859 -- valid -- Couch's Spiny Lizard
  Sceloporus cowlesi Lowe and Norris, 1956 -- valid -- Southwestern Fence Lizard, Cowles Prairie Lizard, White Sands Prairie Lizard
  Sceloporus cozumelae Jones, 1927 -- valid -- Lagartija-escamosa de Cozumel, Cozumel Spiny Lizard
  Sceloporus cryptus H. M. Smith and Lynch, 1967 -- valid -- Lagartija-escamosa de Sierra de Juárez, Sierra Juarez Spiny Lizard
  Sceloporus cupreus Bocourt, 1873 -- valid -- Upland Long-tailed Spiny Lizard
  Sceloporus cyanogenys Cope, 1885 -- valid -- Blue Spiny Lizard
  Sceloporus cyanostictus R. W. Axtell and C. A. Axtell, 1971 -- valid -- Yarrow's Spiny Lizard, Blue-spotted Spiny Lizard
  Sceloporus druckercolini Pérez-Ramos and Salanan de la Riva, 2008 -- valid -- Graceful Mountain Tree Lizard
  Sceloporus dugesii Bocourt, 1874 -- valid -- Duges' Spiny Lizard
  Sceloporus edbelli H. M. Smith, Chiszar and Lemos-Espinal, 2003 -- valid -- Bell's Spiny Lizard
  Sceloporus edwardtaylori H. M. Smith, 1936 -- valid -- Lagartija-escamosa de Taylor, Taylor's Spiny Lizard
  Sceloporus exsul Dixon, Ketchersid and Lieb, 1972 -- valid -- Lagartija-escamosa de Querétaro, Queretaran Desert Lizard
  Sceloporus formosus Wiegmann, 1834 -- valid -- Lagartija-escamosa esmeralda-norteña, Mexican Emerald Spiny Lizard
  Sceloporus formosus formosus Wiegmann, 1834 -- valid
  Sceloporus formosus scitulus H. M. Smith, 1942 -- valid -- Striated Emerald Lizard
  Sceloporus gadoviae Boulenger, 1905 -- valid -- Lagartija-escamosa de Gadow, Gadow's Spiny Lizard
  Sceloporus gadsdeni Castañeda-Gaytán and Díaz-Cárdenas, 2017 -- valid
  Sceloporus goldmani H. M. Smith, 1937 -- valid -- Lagartija-escamosa de Goldman, Goldman's Bunchgrass Lizard
  Sceloporus graciosus Baird and Girard, 1852 -- valid -- Lagartija-escamosa de Artemisa, Sagebrush Lizard
  Sceloporus graciosus gracilis Baird and Girard, 1852 -- valid -- Western Sagebrush Lizard, Mountain Swift
  Sceloporus graciosus graciosus Baird and Girard, 1852 -- valid -- Northern Sagebrush Lizard
  Sceloporus graciosus vandenburgianus Cope, 1896 -- valid -- Southern Sagebush Lizard
  Sceloporus grammicus Wiegmann, 1828 -- valid -- Mesquite Lizard, Lagartija-escamosa de mezquite, Graphic Spiny Lizard
  Sceloporus grammicus disparilis Stejneger, 1916 -- valid -- Mezquite Graphic Lizard
  Sceloporus grammicus grammicus Wiegmann, 1828 -- valid -- Mesquite Lizard
  Sceloporus grammicus microlepidotus Wiegmann, 1834 -- valid -- Northern Mesquite Lizard, Northern Plateau Graphic Lizard
  Sceloporus grammicus tamaulipensis Sites and Dixon, 1981 -- valid -- Tamaulipas Graphic Lizard, Sierra de Tamaulipas Graphic Lizard
  Sceloporus grandaevus (Dickerson, 1919) -- valid -- Lagartija-escamosa anciana, Cerralvo Island Sator
  Sceloporus halli Dasmann and H. M. Smith, 1974 -- valid -- Hall's Spiny Lizard
  Sceloporus heterolepis Boulenger, 1894 -- valid -- Lagartija-escamosa dorso aquillado, Dorsalkeel Spiny Lizard, Southern Odd-scaled Lizard
  Sceloporus horridus Wiegmann, 1834 -- valid -- Lagartija-escamosa tarasca, Rough Lizard, Horrible Spiny Lizard
  Sceloporus horridus horridus Wiegmann, 1834 -- valid -- Southern Rough Lizard
  Sceloporus horridus oligoporus Cope, 1864 -- valid -- Western Rough Lizard, Few-pored Rough Lizard
  Sceloporus hunsakeri Hall and H. M. Smith, 1979 -- valid -- Lagartija-escamosa de Hunsaker, Hunsaker's Spiny Lizard
  Sceloporus insignis Webb, 1967 -- valid -- Lagartija-escamosa collar negro, Michoacán Blackcollar Lizard, Coalcoman Black-collared Lizard
  Sceloporus internasalis H. M. Smith and Bumzahem, 1955 -- valid -- Lagartija-escamosa verde, Mail-snouted Spiny Lizard
  Sceloporus jalapae Günther, 1890 -- valid -- Lagartija-escamosa jalapeña, Jalapa Spiny Lizard
  Sceloporus jarrovii Cope in Yarrow, 1875 -- valid -- Yarrow's Spiny Lizard, Mountain Spiny Lizard
  Sceloporus jarrovii jarrovii Cope in Yarrow, 1875 -- valid -- Mountain Spiny Lizard, Yarrow 's Spiny Lizard
  Sceloporus jarrovii lineolateralis H. M. Smith, 1936 -- valid -- Lined Spiny Lizard
  Sceloporus lemosespinali Lara-Góngora, 2004 -- valid -- Lemos-Espinal's Spiny Lizard
  Sceloporus licki Van Denburgh, 1895 -- valid -- Lagartija-escamosa del Cabo, Cape Arboreal Spiny Lizard
  Sceloporus lineatulus Dickerson, 1919 -- valid -- Lagartija-escamosa de Santa Catalina, Santa Catalina Spiny Lizard
  Sceloporus lunae Bocourt, 1873 -- valid -- Luna's Spiny Lizard
  Sceloporus lundelli H. M. Smith, 1939 -- valid -- Lagartija-escamosa de Lundell, Lundell's Spiny Lizard
  Sceloporus lundelli gaigeae H. M. Smith, 1939 -- valid
  Sceloporus lundelli lundelli H. M. Smith, 1939 -- valid
  Sceloporus macdougalli H. M. Smith and Bumzahem, 1953 -- valid -- Lagartija-escamosa de MacDougall, MacDougall's Spiny Lizard
  Sceloporus maculosus H. M. Smith, 1934 -- valid -- Lagartija-escamosa maculada, Spotted Spiny Lizard, Northern Snub-nosed Lizard
  Sceloporus magister Hallowell, 1854 -- valid -- Desert Spiny Lizard, Lagartija-escamosa de desierto
  Sceloporus magister cephaloflavus Tanner, 1955 -- valid -- Orange-headed Spiny Lizard
  Sceloporus magister magister Hallowell, 1854 -- valid -- Desert Spiny Lizard, Sonoran Spiny Lizard, Purple-backed Spiny Lizard
  Sceloporus magister montserratensis Van Denburgh and Slevin, 1921 -- valid
  Sceloporus magister transversus Phelan and Brattstrom, 1955 -- valid -- Barred Spiny Lizard
  Sceloporus malachiticus Cope, 1864 -- valid -- Green Spiny Lizard
  Sceloporus megalepidurus H. M. Smith, 1934 -- valid -- Lagartija-escamosa escamas grandes, Largescale Spiny Lizard, Cursorial Spiny Lizard, Dull Cursorial Spiny Lizard
  Sceloporus megalepidurus halli Dasmann and H. M. Smith, 1974 -- invalid
  Sceloporus megalepidurus megalepidurus H. M. Smith, 1934 -- valid
  Sceloporus megalepidurus pictus H. M. Smith, 1934 -- valid -- Painted Cursorial Spiny Lizard
  Sceloporus melanorhinus Bocourt, 1876 -- valid -- Lagartija-escamosa hocico negro, Black-nosed Lizard, Pastel Tree Lizard
  Sceloporus melanorhinus calligaster H. M. Smith, 1942 -- valid -- Pastel-bellied Spiny Lizard
  Sceloporus melanorhinus melanorhinus Bocourt, 1876 -- valid -- Southern Black-nosed Lizard
  Sceloporus melanorhinus stuarti H. M. Smith, 1948 -- valid -- Stuart's Black-nosed Lizard
  Sceloporus merriami Stejneger, 1904 -- valid -- Canyon Lizard, Lagartija-escamosa de cañón
  Sceloporus merriami annulatus H. M. Smith, 1937 -- valid -- Big Bend Canyon Lizard
  Sceloporus merriami australis Williams, H. M. Smith and Chrapliwy, 1960 -- valid -- Southeastern Canyon Lizard
  Sceloporus merriami ballingeri Lemos-Espinal, H. M. Smith, Auth and Chiszar, 2001 -- valid -- Ballinger's Canyon Lizard
  Sceloporus merriami longipunctatus Olson, 1973 -- valid -- Presidio Canyon Lizard
  Sceloporus merriami merriami Stejneger, 1904 -- valid -- Merriam's Canyon Lizard
  Sceloporus merriami sanojae Lemos-Espinal in H. M. Smith, Lemos-Espinal and Chiszar, 2003 -- valid -- Sanoja's Canyon Lizard
  Sceloporus merriami williamsi Lemos-Espinal, Chiszar and H. M. Smith, 2000 -- valid -- Williams' Canyon Lizard
  Sceloporus minor Cope, 1885 -- valid -- Minor Lizard, Red Minor Lizard
  Sceloporus minor cyaneus Treviño-Saldaña, 1988 -- valid -- Northern Blue Mountain Lizard
  Sceloporus minor erythrocyaneus Mertens, 1950 -- valid -- Red-spotted Minor Lizard
  Sceloporus minor immucronatus H. M. Smith, 1936 -- valid
  Sceloporus minor minor Cope, 1885 -- valid
  Sceloporus mucronatus Cope, 1885 -- valid -- Lagartija-escamosa de grieta-sureña, Cleft Lizard
  Sceloporus mucronatus mucronatus Cope, 1885 -- valid -- Central Cleft Lizard
  Sceloporus mucronatus olsoni Webb, Lemos-Espinal and H. M. Smith, 2002 -- valid -- Olson's Cleft Lizard
  Sceloporus nelsoni Cochran, 1923 -- valid -- Lagartija-escamosa de Nelson, Nelson's Spiny Lizard
  Sceloporus nelsoni barrancarum Tanner and Robison, 1960 -- valid -- Northern Nelson's Lizard
  Sceloporus nelsoni nelsoni Cochran, 1923 -- valid -- Southern Nelson's Lizard
  Sceloporus oberon H. M. Smith and Brown, 1941 -- valid -- Oberon Spiny Lizard
  Sceloporus occidentalis Baird and Girard, 1852 -- valid -- Western Fence Lizard, Lagartija-escamosa del occidente
  Sceloporus occidentalis biseriatus Hallowell, 1854 -- valid -- San Joaquin Fence Lizard
  Sceloporus occidentalis bocourtii Boulenger, 1885 -- valid -- Coast Range Fence Lizard
  Sceloporus occidentalis longipes Baird, 1859 -- valid -- Great Basin Fence Lizard
  Sceloporus occidentalis occidentalis Baird and Girard, 1852 -- valid -- Northwestern Fence Lizard
  Sceloporus occidentalis taylori Camp, 1916 -- valid -- Sierra Fence Lizard
  Sceloporus ochoterenae H. M. Smith, 1934 -- valid -- Lagartija-escamosa de Querétaro, Queretaran Spiny Lizard, Ochoterena's Lizard
  Sceloporus olivaceus H. M. Smith, 1934 -- valid -- Texas Spiny Lizard, Lagartija-escamosa de Texas
  Sceloporus omiltemanus Günther, 1890 -- valid -- Southern Cleft Lizard
  Sceloporus orcutti Stejneger, 1893 -- valid -- Granite Spiny Lizard, Lagartija-escamosa de granito
  Sceloporus ornatus Baird, 1859 -- valid -- Lagartija-escamosa adornada, Ornate Spiny Lizard
  Sceloporus palaciosi Lara-Góngora, 1983 -- valid -- Lagartija-escamosa de Palacios, Palacios' Bunchgrass Lizard
  Sceloporus parvus H. M. Smith, 1934 -- valid -- Lagartija-escamosa panza azul, Bluebelly Lizard
  Sceloporus parvus parvus H. M. Smith, 1934 -- valid
  Sceloporus parvus scutulatus H. M. Smith, 1934 -- valid
  Sceloporus poinsettii Baird and Girard, 1852 -- valid -- Crevice Spiny Lizard
  Sceloporus poinsettii amydrus Webb, 2006 -- valid
  Sceloporus poinsettii axtelli Webb, 2006 -- valid
  Sceloporus poinsettii macrolepis H. M. Smith and Chrapliwy, 1958 -- valid -- Western Crevice Lizard
  Sceloporus poinsettii poinsettii Baird and Girard, 1852 -- valid -- Northern Crevice Spiny Lizard
  Sceloporus poinsettii polylepis H. M. Smith and Chrapliwy, 1958 -- valid -- Southern Crevice Lizard
  Sceloporus pyrocephalus Cope, 1864 -- valid -- Lagartija-escamosa de pedregal, Boulder Spiny Lizard, Red-headed Spiny Lizard
  Sceloporus salvini Günther, 1890 -- valid -- Lagartija-escamosa de Salvin, Salvin's Spiny Lizard
  Sceloporus samcolemani H. M. Smith and Hall, 1974 -- valid -- Coleman's Bunchgrass Lizard
  Sceloporus scalaris Wiegmann, 1828 -- valid -- Bunch Grass Lizard, Lagartija-escamosa escalonada, Light-bellied Bunch Grass Lizard
  Sceloporus scalaris brownorum H. M. Smith, Watkins-Colwell, Lemos-Espinal and Chiszar, 1997 -- valid -- Brown's Bunchgrass Lizard
  Sceloporus scalaris scalaris Wiegmann, 1828 -- valid -- Bunch Grass Lizard
  Sceloporus scalaris unicanthalis H. M. Smith, 1937 -- valid -- Southwestern Bunchgrass Lizard
  Sceloporus serrifer Cope, 1866 -- valid -- Blue Spiny Lizard, Lagartija-escamosa azul, Rough-scaled Lizard
  Sceloporus serrifer prezygus H. M. Smith, 1942 -- valid -- Chiapan Rough-scaled Lizard
  Sceloporus serrifer serrifer Cope, 1866 -- valid -- Yucatecan Rough-scaled Lizard
  Sceloporus shannonorum Langebartel, 1959 -- valid -- Shannons' Spiny Lizard
  Sceloporus siniferus Cope, 1871 -- valid -- Lagartija-escamosa cola larga, Longtail Spiny Lizard
  Sceloporus slevini H. M. Smith, 1937 -- valid -- Slevin's Bunchgrass Lizard, Slevins's Bunch Grass Lizard
  Sceloporus smaragdinus Bocourt, 1873 -- valid -- Lagartija-escamosa esmeralda-de Bocourt, Bocourt's Emerald Lizard
  Sceloporus smithi Hartweg and Oliver, 1937 -- valid -- Smith's Rosebelly Lizard
  Sceloporus spinosus Wiegmann, 1828 -- valid -- Lagartija-escamosa espinosa, Eastern Spiny Lizard
  Sceloporus spinosus apicalis H. M. Smith and P. W. Smith, 1951 -- valid -- Miahuatlán Spiny Lizard
  Sceloporus spinosus caeruleopunctatus H. M. Smith, 1938 -- valid -- Blue-spotted Spiny Lizard
  Sceloporus spinosus spinosus Wiegmann, 1828 -- valid -- Eastern Spiny Lizard
  Sceloporus squamosus Bocourt, 1874 -- valid -- Lagartija-escamosa de Bocourt, Mexican Spiny Lizard
  Sceloporus stejnegeri H. M. Smith, 1942 -- valid -- Lagartija-escamosa collar negro, Stejneger's Blackcollar Spiny Lizard
  Sceloporus subpictus Lynch and H. M. Smith, 1965 -- valid -- Lagartija-escamosa pintada, Southern Cursorial Lizard
  Sceloporus sugillatus H. M. Smith, 1942 -- valid -- Zempoala Bar-bellied Lizard
  Sceloporus taeniocnemis Cope, 1885 -- valid -- Lagartija-escamosa esmeralda-de Cope, Guatemalan Emerald Spiny Lizard
  Sceloporus taeniocnemis hartwegi Stuart, 1971 -- valid -- Hartweg's Emerald Lizard
  Sceloporus taeniocnemis taeniocnemis Cope, 1885 -- valid -- Guatemalan Emerald Spiny Lizard
  Sceloporus tanneri H. M. Smith and Larsen, 1975 -- valid -- Lagartija-escamosa de Tanner, Tanner's Spiny Lizard
  Sceloporus teapensis Günther, 1890 -- valid -- Teapen Rosebelly Lizard
  Sceloporus torquatus Wiegmann, 1828 -- valid -- Lagartija-escamosa barrada, Crevice Swift, Torquate Lizard
  Sceloporus torquatus binocularis Dunn, 1936 -- valid -- Nuevo Leon Crevice Swift
  Sceloporus torquatus madrensis Olson, 1986 -- valid -- Lesser Torquate Lizard
  Sceloporus torquatus melanogaster Cope, 1885 -- valid -- Central Plateau Torquate Lizard
  Sceloporus torquatus mikeprestoni H. M. Smith and Alvarez, 1976 -- valid -- Preston's Torquate Lizard
  Sceloporus torquatus torquatus Wiegmann, 1828 -- valid -- Wiegmann's Torquate Lizard
  Sceloporus tristichus Cope in Yarrow, 1875 -- valid -- Plateau Lizard, Southern Plateau Lizard, Plateau Fence Lizard
  Sceloporus undulatus (Bosc and Daudin in Sonnini and Latreille, 1801) -- valid -- Eastern Fence Lizard, Fence Lizard, Plateau Lizard, Prairie Lizard, Lagartija-escamosa de pradera
  Sceloporus undulatus elongatus Stejneger, 1890 -- valid -- Northern Plateau Lizard
  Sceloporus undulatus erythrocheilus Maslin, 1956 -- valid -- Red-lipped Prairie Lizard
  Sceloporus undulatus garmani Boulenger, 1882 -- valid -- Northern Prairie Lizard
  Sceloporus undulatus hyacinthinus (Green, 1818) -- valid -- Northern Fence Lizard
  Sceloporus undulatus speari H. M. Smith, Chiszar and Lemos-Espinal, 1995 -- valid -- Spear's Prairie Lizard
  Sceloporus undulatus tedbrowni H. M. Smith, Bell, Applegarth and Chiszar, 1992 -- valid -- Mescalero Prairie Lizard, Mescalero Dunes Fence Lizard
  Sceloporus undulatus undulatus (Bosc and Daudin in Sonnini and Latreille, 1801) -- valid -- Southern Fence Lizard, Eastern Fence Lizard
  Sceloporus uniformis Phelan and Brattstrom, 1955 -- valid -- Yellow-backed Spiny Lizard
  Sceloporus utiformis Cope, 1864 -- valid -- Lagartija-escamosa de suelo, Cope's Largescale Spiny Lizard, Antesator
  Sceloporus variabilis Wiegmann, 1834 -- valid -- Rose-bellied Lizard, Lagartija-escamosa panza rosada, Rosebelly Lizard
  Sceloporus variabilis marmoratus Hallowell, 1852 -- valid -- Rose-bellied Lizard, Northern Rosebelly Lizard
  Sceloporus variabilis olloporus H. M. Smith, 1937 -- valid -- Southern Rose-bellied Lizard
  Sceloporus variabilis variabilis Wiegmann, 1834 -- valid -- Rose-bellied Lizard
  Sceloporus virgatus H. M. Smith, 1938 -- valid -- Striped Plateau Lizard, Lagartija-escamosa rayada
  Sceloporus woodi Stejneger, 1918 -- valid -- Florida Scrub Lizard
  Sceloporus zosteromus Cope, 1863 -- valid -- Lagartija-escamosa de San Lucas, Central Baja Spiny Lizard
  Sceloporus zosteromus monserratensis Van Denburgh and Slevin, 1921 -- valid -- Central Baja Spiny Lizard, Monserrat Island Spiny Lizard
  Sceloporus zosteromus rufidorsum Yarrow, 1882 -- valid -- Red-backed Spiny Lizard, Mexican Desert Spiny Lizard, Lagartija-escamosa de desierto-mexicano
  Sceloporus zosteromus zosteromus Cope, 1863 -- valid -- Baja Spiny Lizard, San Lucan Spiny Lizard
  Schmidtophis rubriventris Taylor, 1949 -- invalid
  Scolecophis atrocinctus (Schlegel, 1837) -- valid -- Black-banded Snake
  Scolecophis scytalinus Cope, 1867 -- invalid
  Scytale brachyorrhos F. Boie, 1827 -- invalid
  Scytale neuwiedii A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Scytale neuwiedii nigrum A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Scytale pyramidum Geoffroy de St-Hilaire in Savigny, 1827 -- invalid
  Seminatrix Cope, 1895 -- invalid -- Swamp Snakes, Swampsnakes
  Senticolis triaspis (Cope, 1866) -- valid -- Green Rat Snake, Green Ratsnake, Culebra oliva
  Senticolis triaspis intermedia (Boettger, 1883) -- valid -- Green Rat Snake, Northern Green Ratsnake
  Senticolis triaspis mutabilis (Cope, 1885) -- valid
  Senticolis triaspis triaspis (Cope, 1866) -- valid -- Green Rat Snake
  Sepedon rhombeata Lichtenstein, 1823 -- invalid
  Sibon annulata yucatanensis Cope, 1887 -- invalid
  Sibon annulatus (Günther, 1872) -- valid -- Ringed Snail Sucker
  Sibon anthracops (Cope, 1868) -- valid -- Cope's Snail Sucker
  Sibon argus (Cope, 1876) -- valid -- Argus Snail Sucker
  Sibon carri (Shreve, 1951) -- valid -- Carr's Snail Sucker
  Sibon dimidiatus (Günther, 1872) -- valid -- Slender Snail Sucker
  Sibon dunni Peters, 1957 -- valid -- Dunn's Snail Sucker
  Sibon frenatum Cope, 1886 -- invalid
  Sibon lamari Solórzano, 2001 -- valid
  Sibon linearis Perez-Higareda, Lopez-Luna and H. M. Smith, 2002 -- valid
  Sibon longifrenis (Stejneger, 1909) -- valid -- Stejneger's Snail Sucker, Lichen-colored Snail Sucker
  Sibon manzanaresi McCranie, 2007 -- valid
  Sibon merendonensis Rovito, Papenfuss and Vásquez-Almazán, 2012 -- valid
  Sibon miskitus McCranie, 2006 -- valid
  Sibon nebulatus (Linnaeus, 1758) -- valid -- Slug-eating Snake, Cloudy Snail Sucker, Cloudy Snail-eating Snake
  Sibon noalamina Lotzkat, Hertz and Köhler, 2012 -- valid
  Sibon perissostichon Köhler, Lotzkat and Hertz, 2010 -- valid
  Sibon sanniolus (Cope, 1866) -- valid -- Pigmy Snail Sucker
  Sibon sanniolus neilli Henderson, Hoevers and Wilson, 1977 -- valid
  Sibon sanniolus sanniolus (Cope, 1866) -- valid
  Sibon septentrionales rubricatum Cope, 1893 -- invalid
  Sibynomorphus gaigeae Oliver, 1937 -- invalid
  Sibynomorphus inaequifasciatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- invalid
  Sibynomorphus lavillai Scrocchi, Porto and Rey, 1993 -- valid
  Sibynomorphus mikanii (Schlegel, 1837) -- valid
  Sibynomorphus neuwiedi (Ihering, 1911) -- valid -- Neuwied's Tree Snake
  Sibynomorphus nicholsi Dunn, 1933 -- invalid
  Sibynomorphus oligozonatus Orcés and Almendáriz, 1989 -- valid
  Sibynomorphus oneilli Rossman and Thomas, 1979 -- valid -- O'Neill's Tree Snake
  Sibynomorphus petersi Orcés and Almendáriz, 1989 -- valid
  Sibynomorphus turgidus (Cope, 1868) -- valid
  Sibynomorphus vagrans (Dunn, 1923) -- valid -- Dunn's Tree Snake
  Sibynomorphus vagus (Jan, 1863) -- valid -- Jan's Tree Snake
  Sibynomorphus ventrimaculatus (Boulenger, 1885) -- valid -- Boulenger's Tree Snake
  Sibynomorphus williamsi Carillo de Espinoza, 1974 -- valid -- Williams' Tree Snake
  Sibynophiinae Dunn, 1928 -- valid
  Sibynophis annulatus hondurensis Schmidt, 1936 -- invalid
  Sibynophis bistrigatus (Günther, 1868) -- valid -- Günther's Many-tooth Snake
  Sibynophis bivittatus (Boulenger, 1894) -- valid -- White-striped Snake
  Sibynophis chinensis (Günther, 1889) -- valid -- Chinese Many-tooth Snake
  Sibynophis chinensis chinensis (Günther, 1889) -- valid
  Sibynophis chinensis grahami (Boulenger, 1904) -- valid
  Sibynophis chinensis miyiensis Zhao and Kou, 1987 -- valid
  Sibynophis collaris (Gray, 1853) -- valid -- Common Many-tooth Snake
  Sibynophis collaris triangularis Taylor, 1965 -- invalid
  Sibynophis geminatus (H. Boie, 1826) -- valid -- Boie's Many-tooth Snake
  Sibynophis geminatus insularis Mertens, 1927 -- invalid
  Sibynophis melanocephalus (Gray, 1835) -- valid -- Black-headed Collared Snake, Malayan Many-tooth Snake
  Sibynophis melanocephalus insularis Mertens, 1927 -- valid
  Sibynophis melanocephalus melanocephalus (Gray, 1835) -- valid
  Sibynophis sagittarius (Cantor, 1839) -- valid -- Cantor's Black-headed Snake
  Sibynophis subpunctatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Jerdon's Many-tooth Snake
  Sibynophis triangularis Taylor, 1965 -- valid -- Triangulate Collared Snake, Triangle Many-tooth Snake
  Simocephalus chanleri Stejneger, 1893 -- invalid
  Simocephalus crossi Boulenger, 1895 -- invalid
  Simocephalus grantii Günther, 1863 -- invalid
  Simocephalus nyassae Günther, 1888 -- invalid
  Simocephalus unicolor Boulenger, 1910 -- invalid
  Simophis rhinostoma (Schlegel, 1837) -- valid -- Sao Paulo False Coral Snake
  Simoselaps anomalus (Sternfeld, 1919) -- valid -- Northern Desert Banded Snake
  Simoselaps bertholdi (Jan, 1859) -- valid -- Southern Desert Banded Snake, Desert Banded Snake
  Simoselaps bimaculatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Western Black-naped Snake, Black-naped Burrowing Snake
  Simoselaps littoralis (Storr, 1968) -- valid -- West-Coast Banded Snake, Coastal Burrowing Snake
  Simoselaps minimus (Worrell, 1960) -- valid -- Dampierland Burrowing Snake
  Simoselaps morrisi Horner, 1998 -- invalid
  Simotes albocinctus juglandifer Wall, 1909 -- invalid
  Simotes annulifer Boulenger, 1893 -- invalid
  Simotes australis Krefft, 1864 -- invalid
  Simotes barroni M. A. Smith, 1916 -- invalid
  Simotes chinensis Günther, 1888 -- invalid
  Simotes cinereus Günther, 1864 -- invalid
  Simotes cruentatus Günther, 1868 -- invalid
  Simotes fasciolatus Günther, 1864 -- invalid
  Simotes forbesi Boulenger, 1883 -- invalid
  Simotes formosanus Günther, 1872 -- invalid
  Simotes inornatus Boulenger, 1914 -- invalid
  Simotes longicauda joynsoni M. A. Smith, 1917 -- invalid
  Simotes meyerinkii Steindachner, 1891 -- invalid
  Simotes ocellatus Morice, 1875 -- invalid
  Simotes planiceps Boulenger, 1888 -- invalid
  Simotes signatus Günther, 1864 -- invalid
  Simotes splendidus Günther, 1875 -- invalid
  Simotes taeniatus Günther, 1861 -- invalid
  Simotes taeniatus mouhoti Boulenger, 1914 -- invalid
  Simotes theobaldi Günther, 1868 -- invalid
  Simotes torquatus Boulenger, 1888 -- invalid
  Simotes trilineatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Simotes unicolor Kopstein, 1926 -- invalid
  Simotes vaillanti Sauvage, 1876 -- invalid
  Simotes vertebralis Günther, 1865 -- invalid
  Simotes violaceus macrurus Angel, 1927 -- invalid
  Simotes woodmasoni Sclater, 1891 -- invalid
  Sinomicrurus hatori (Takahashi, 1930) -- valid
  Sinomicrurus japonicus (Günther, 1868) -- valid -- Japanese Coral Snake
  Sinomicrurus japonicus boettgeri (Fritze, 1894) -- valid
  Sinomicrurus japonicus japonicus (Günther, 1868) -- valid
  Sinomicrurus kelloggi (Pope, 1928) -- valid -- Kellogg's Coral Snake
  Sinomicrurus macclellandi (Reinhardt, 1844) -- valid -- MacClelland's Coral Snake
  Sinomicrurus macclellandi iwasakii (Maki, 1935) -- valid
  Sinomicrurus macclellandi macclellandi (Reinhardt, 1844) -- valid
  Sinomicrurus macclellandi swinhoei (Van Denburgh, 1912) -- valid
  Sinomicrurus macclellandi univirgatus (Günther, 1858) -- valid
  Sinomicrurus sauteri (Steindachner, 1913) -- valid -- Oriental Coral Snake
  Sinonatrix Rossman and Eberle, 1977 -- valid
  Sinonatrix aequifasciata (Barbour, 1908) -- valid -- Asiatic Water Snake
  Sinonatrix annularis (Hallowell, 1857) -- valid -- Ringed Water Snake
  Sinonatrix percarinata (Boulenger, 1899) -- valid -- Eastern Water Snake, Olive Keelback
  Sinonatrix percarinata percarinata (Boulenger, 1899) -- valid
  Sinonatrix percarinata suriki (Maki, 1931) -- valid
  Sinonatrix yunnanensis Rao and Yang, 1998 -- valid -- Yunnan Water Snake
  Sinovipera sichuanensis Guo and Wang, 2011 -- invalid
  Siphlophis ayauma Sheehy III, Yánez-Muñoz, Valencia and E. N. Smith, 2014 -- valid -- Devil's Head Spotted Night Snake
  Siphlophis cervinus (Laurenti, 1768) -- valid -- Panama Spotted Night Snake
  Siphlophis compressus (Daudin, 1803) -- valid -- Tropical Flat Snake
  Siphlophis fitzingeri Tschudi, 1845 -- invalid
  Siphlophis leucocephalus (Günther, 1863) -- valid -- Common Spotted Night Snake
  Siphlophis longicaudatus (Andersson, 1901) -- valid -- Brazilian Spotted Night Snake
  Siphlophis pulcher (Raddi, 1820) -- valid -- Guanabara Spotted Night Snake
  Siphlophis worontzowi (Prado, 1940) -- valid -- Worontzow's Spotted Night Snake
  Sistrurus catenatus (Rafinesque-Schmaltz, 1818) -- valid -- Massasauga, Víbora-cascabel pigmea-norteña, Eastern Massasauga
  Sistrurus catenatus catenatus (Rafinesque-Schmaltz, 1818) -- invalid -- Eastern Massasauga
  Sistrurus catenatus edwardsii (Baird and Girard, 1853) -- invalid -- Desert Massasauga
  Sistrurus catenatus tergeminus (Say in James, 1823) -- invalid -- Western Massasauga
  Sistrurus miliarius (Linnaeus, 1766) -- valid -- Pigmy Rattlesnake, Pygmy Rattlesnake
  Sistrurus miliarius barbouri Gloyd, 1935 -- valid -- Dusky Pigmy Rattlesnake, Dusky Pygmy Rattlesnake
  Sistrurus miliarius miliarius (Linnaeus, 1766) -- valid -- Carolina Pigmy Rattlesnake, Carolina Pygmy Rattlesnake
  Sistrurus miliarius streckeri Gloyd, 1935 -- valid -- Western Pigmy Rattlesnake, Western Pygmy Rattlesnake
  Sistrurus tergeminus (Say in James, 1823) -- valid -- Western Massasauga
  Sistrurus tergeminus edwardsii (Baird and Girard, 1853) -- valid -- Desert Massasauga
  Sistrurus tergeminus tergeminus (Say in James, 1823) -- valid -- Prairie Massasauga, Western Massasauga
  Sitana bahiri A. A. Amarasinghe, Ineich and Karunarathna in Amarasinghe et al., 2015 -- valid -- Bahir's Fan-throated Lizard
  Sitana deccanensis Jerdon, 1870 -- invalid
  Sitana devakai A. A. Amarasinghe, Ineich and Karunarathna in Amarasinghe et al., 2015 -- valid -- Devaka's Fan-throated Lizard
  Sitana fusca Schleich and Kästle, 1998 -- valid -- Dark Sitana
  Sitana laticeps Deepak and Giri in Deepak et al., 2016 -- valid -- Broad-headed Fan-throated Lizard
  Sitana marudhamneydhal Deepak, Khandekar, Varma and Chaitanya, 2016 -- valid
  Sitana ponticeriana Cuvier, 1829 -- valid -- Pondichéry Fan Throated Lizard
  Sitana schleichi Anders and Kästle, 2002 -- valid -- Suklaphantah Sitana
  Sitana sivalensis Schleich, Kästle and Shah, 1998 -- valid -- Siwalik Sitana
  Sitana spinaecephalus Deepak, Vyas and Giri in Deepak et al., 2016 -- valid -- Spiny-headed Fan-throated Lizard
  Sitana visiri Deepak in Deepak et al., 2016 -- valid -- Palm Leaf Fan-throated Lizard
  Sonora aemula (Cope, 1879) -- valid -- Culebra-suelera cola plana, Filetail Ground Snake
  Sonora michoacanensis (Dugès, 1884) -- valid -- Culebra-suelera michoacana, Michoacán Ground Snake
  Sonora michoacanensis mutabilis Stickel, 1943 -- invalid
  Sonora mutabilis Stickel, 1943 -- valid -- Michoacán Ground Snake
  Sonora semiannulata Baird and Girard, 1853 -- valid -- Ground Snake, Groundsnake, Culebra-suelera semianillada, Western Groundsnake
  Sonora semiannulata semiannulata Baird and Girard, 1853 -- valid -- Variable Groundsnake
  Sonora semiannulata taylori (Boulenger, 1894) -- valid -- Southern Texas Groundsnake
  Sordellina punctata (Peters, 1880) -- valid -- Dotted Brown Snake
  Spalerosophis arenarius (Boulenger, 1890) -- valid -- Red-spotted Diadem Snake, Red-spotted Royal Snake
  Spalerosophis atriceps (Fischer, 1885) -- valid -- Diadem Snake, Royal Snake
  Spalerosophis diadema (Schlegel, 1837) -- valid -- Royal Snake, Diadem Snake
  Spalerosophis diadema cliffordii (Schlegel, 1837) -- valid
  Spalerosophis diadema diadema (Schlegel, 1837) -- valid
  Spalerosophis diadema schirasianus (Jan, 1863) -- valid
  Spalerosophis dolichospilus (Werner, 1923) -- valid -- Werner's Diadem Snake
  Spalerosophis josephscorteccii Lanza, 1964 -- valid -- Scortecci's Diadem Snake
  Spalerosophis microlepis Jan, 1865 -- valid -- Jan's Diadem Snake, Zebra Snake
  Sphecodes albofuscus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Sphenocephalus melanogenys Tschudi, 1845 -- invalid
  Spilotes argus Bocourt, 1888 -- invalid
  Spilotes chrysobronchus Cope, 1876 -- invalid
  Spilotes corais suborbitalis Peters, 1869 -- invalid
  Spilotes grandisquamis Peters, 1869 -- invalid
  Spilotes hodgsonii Günther, 1860 -- invalid
  Spilotes melanurus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Spilotes poecilonotus Günther, 1858 -- invalid
  Spilotes pullatus (Linnaeus, 1758) -- valid -- Culebra-ratonera mica, Yellow Rat Snake, Chicken Snake, Tropical Rat Snake, Tiger Snake
  Spilotes pullatus anomalepis Bocourt, 1888 -- invalid
  Spilotes pullatus argusiformis Amaral, 1929 -- invalid
  Spilotes pullatus maculatus Amaral, 1929 -- invalid
  Spilotes pullatus mexicanus (Laurenti, 1768) -- invalid
  Spilotes pullatus pullatus (Linnaeus, 1758) -- invalid -- Tiger Snake, Tropical Rat Snake
  Spilotes sulphureus (Wagler, 1824) -- valid -- Amazon Puffing Snake
  Spilotes sulphureus dieperinkii (Schlegel, 1837) -- valid
  Spilotes sulphureus sulphureus (Wagler, 1824) -- valid
  Stegonotus batjanensis (Günther, 1865) -- valid -- Batjan Frog-eating Snake
  Stegonotus borneensis Inger, 1967 -- valid -- Borneo Frog-eating Snake
  Stegonotus cucullatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Slatey-grey Snake
  Stegonotus diehli Lindholm, 1905 -- valid -- Diehl's Little Ground Snake
  Stegonotus dumerili Boulenger, 1893 -- invalid
  Stegonotus florensis (de Rooij, 1917) -- valid -- Flores Ground Snake
  Stegonotus guentheri Boulenger, 1895 -- valid -- Milne Bay Ground Snake
  Stegonotus heterurus Boulenger, 1893 -- valid -- Bismarck Ground Snake
  Stegonotus modestus (Schlegel, 1837) -- valid -- Northern New Guinea Ground Snake
  Stegonotus muelleri A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid
  Stegonotus parvus (Meyer, 1874) -- valid -- Slatey-grey Snake, Common Ground Snake
  Stellagama Baig, Wagner, Ananjeva and Böhme, 2012 -- valid
  Stellagama stellio (Linnaeus, 1758) -- valid -- Roughtail Rock Agama
  Stellagama stellio brachydactyla (Hass, 1951) -- valid -- Short-Toed Rock Agama
  Stellagama stellio cypriaca (Daan, 1967) -- valid
  Stellagama stellio daani (Beutler and Frör, 1980) -- valid
  Stellagama stellio picea (Parker, 1935) -- valid
  Stellagama stellio salehi (Werner in Lachman, Carmely and Werner, 2006) -- valid
  Stellagama stellio stellio (Linnaeus, 1758) -- valid
  Stellagama stellio vulgaris (Sonnini and Latreille, 1802) -- valid
  Stenocercus aculeatus (O'Shaughnessy, 1879) -- valid
  Stenocercus albolineatus Teixeira, Prates, Nisa, Silva-Martins, Strüssmann and Rodrigues, 2016 -- valid
  Stenocercus amydrorhytus G. Köhler and Lehr, 2015 -- valid
  Stenocercus angel Torres-Carvajal, 2000 -- valid
  Stenocercus angulifer (Werner, 1901) -- valid
  Stenocercus apurimacus Fritts, 1972 -- valid -- Fritts' Whorltail Iguana
  Stenocercus arndti Venegas, Echevarría and Alvarez, 2014 -- valid -- La Granja Whorltail Lizard
  Stenocercus azureus (F. Müller, 1880) -- valid
  Stenocercus boettgeri Boulenger, 1911 -- valid -- Boettger's Whorltail Iguana
  Stenocercus bolivarensis Castro and Ayala, 1982 -- valid -- Bolivar Whorltail Iguana
  Stenocercus cadlei Torres-Carvajal and Mafla-Endara, 2013 -- valid
  Stenocercus caducus (Cope, 1862) -- valid
  Stenocercus carrioni Parker, 1934 -- valid -- Parker's Whorltail Iguana
  Stenocercus chinchaoensis Venegas, Duran and García-Burneo, 2013 -- valid -- Chinchao Whorltail Lizard
  Stenocercus chlorostictus Cadle, 1991 -- valid
  Stenocercus chota Torres-Carvajal, 2000 -- valid
  Stenocercus chrysopygus Boulenger, 1900 -- valid -- Golden Whorltail Iguana
  Stenocercus crassicaudatus (Tschudi, 1845) -- valid -- Spiny Whorltail Iguana
  Stenocercus cupreus Boulenger, 1885 -- valid -- Copper Whorltail Iguana
  Stenocercus doellojuradoi (Freiberg, 1944) -- valid
  Stenocercus dumerilii (Steindachner, 1867) -- valid
  Stenocercus empetrus Fritts, 1972 -- valid -- Rock Whorltail Iguana
  Stenocercus erythrogaster (Hallowell, 1856) -- valid
  Stenocercus eunetopsis Cadle, 1991 -- valid
  Stenocercus festae (Peracca, 1897) -- valid -- Peracca's Whorltail Iguana
  Stenocercus fimbriatus Avila-Pires, 1995 -- valid -- Western Leaf Lizard
  Stenocercus formosus (Tschudi, 1845) -- valid -- Formosa Whorltail Iguana
  Stenocercus frittsi Torres-Carvajal, 2005 -- valid
  Stenocercus guentheri (Boulenger, 1885) -- valid -- Günther's Whorltail Iguana
  Stenocercus haenschi (Werner, 1901) -- valid -- Haensch's Whorltail Iguana
  Stenocercus huancabambae Cadle, 1991 -- valid
  Stenocercus humeralis (Günther, 1859) -- valid -- Patterned Whorltail Iguana
  Stenocercus imitator Cadle, 1991 -- valid
  Stenocercus iridescens (Günther, 1859) -- valid
  Stenocercus ivitus Fritts, 1972 -- valid -- Ivy Whorltail Iguana
  Stenocercus johaberfellneri G. Köhler and Lehr, 2015 -- valid
  Stenocercus lache Corredor, 1983 -- valid
  Stenocercus latebrosus Cadle, 1998 -- valid
  Stenocercus limitaris Cadle, 1998 -- valid
  Stenocercus marmoratus (A. M. C. Duméril and Bibron, 1837) -- valid
  Stenocercus melanopygus Boulenger, 1900 -- valid -- Dark Whorltail Iguana
  Stenocercus modestus (Tschudi, 1845) -- valid -- Modest Whorltail Iguana
  Stenocercus nigromaculatus Noble, 1924 -- valid -- Black-spotted Whorltail Iguana
  Stenocercus nubicola Fritts, 1972 -- valid -- Cloud Whorltail Iguana
  Stenocercus ochoai Fritts, 1972 -- valid -- Ochoa Whorltail Iguana
  Stenocercus omari Venegas, Echevarría, García-Bueneo and Koch, 2016 -- valid
  Stenocercus orientalis Fritts, 1972 -- valid -- Eastern Whorltail Iguana
  Stenocercus ornatissimus (Girard, 1858) -- valid -- Lesser Ornate Whorltail Iguana
  Stenocercus ornatus (Gray, 1845) -- valid -- Girard's Whorltail Iguana
  Stenocercus pectinatus (A. M. C. Duméril and Bibron, 1835) -- valid
  Stenocercus percultus Cadle, 1991 -- valid
  Stenocercus praeornatus Fritts, 1972 -- valid -- Greater Ornate Whorltail Iguana
  Stenocercus prionotus Cadle, 2001 -- valid
  Stenocercus puyango Torres-Carvajal, 2005 -- valid
  Stenocercus quinarius Nogueira and Rodrigues, 2006 -- valid
  Stenocercus rhodomelas (Boulenger, 1899) -- valid -- Red-black Whorltail Iguana
  Stenocercus roseiventris d'Orbigny in A. M. C. Duméril and Bibron, 1837 -- valid -- Rose Whorltail Iguana
  Stenocercus santander Torres-Carvajal, 2007 -- valid
  Stenocercus scapularis (Boulenger, 1901) -- valid
  Stenocercus simonsii Boulenger, 1899 -- valid -- Simons' Whorltail Iguana
  Stenocercus sinesaccus Torres-Carvajal, 2005 -- valid
  Stenocercus squarrosus Nogueira and Rodrigues, 2006 -- valid
  Stenocercus stigmosus Cadle, 1998 -- valid
  Stenocercus torquatus Boulenger, 1885 -- valid
  Stenocercus trachycephalus (A. M. C. Duméril in A. M. C. Duméril and A. H. A. Duméril, 1851) -- valid -- Duméril's Whorltail Iguana
  Stenocercus tricristatus (A. M. C. Duméril in A. M. C. Duméril and A. H. A. Duméril, 1851) -- valid
  Stenocercus variabilis Boulenger, 1901 -- valid -- Variable Whorltail Iguana
  Stenocercus varius Boulenger, 1885 -- valid -- Keeled Whorltail Iguana
  Stenognathe modestus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Stenophis citrinus Domergue, 1995 -- invalid
  Stenophis gaimardi carleti Domergue, 1995 -- invalid
  Stenophis guentheri Boulenger, 1896 -- invalid
  Stenophis iarakaensis Domergue, 1994 -- invalid
  Stenophis inopinae Domergue, 1995 -- invalid
  Stenophis inornatus Boulenger, 1896 -- invalid
  Stenophis pseudogranuliceps Domergue, 1995 -- invalid
  Stenophis tulearensis Domergue, 1995 -- invalid
  Stenophis variabilis Boulenger, 1896 -- invalid
  Stenorrhina degenhardtii (Berthold, 1846) -- valid -- Degenhardt's Scorpion-eating Snake
  Stenorrhina degenhardtii degenhardtii (Berthold, 1846) -- valid
  Stenorrhina degenhardtii mexicana (Steindachner, 1867) -- valid
  Stenorrhina degenhardtii ocellata Jan, 1876 -- valid
  Stenorrhina freminvillei A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Culebra-alacranera de sangre, Slaty Grey Snake, Blood Snake
  Stephanohydra fusca Tschudi, 1837 -- invalid
  Stichophanes Wang, Messenger, Zhao and Zhu, 2014 -- valid
  Stichophanes ningshaanensis (Yuan, 1983) -- valid -- Ningshan Line-shaped Snake, Ningshaan Kukri Snake
  Stoliczkia borneensis Boulenger, 1899 -- valid -- Borneo Red Snake
  Stoliczkia khasiensis Jerdon, 1870 -- valid -- Khase Red Snake, Khasi Earth Snake
  Storeria Baird and Girard, 1853 -- valid -- Brown-bellied Snakes, Red-bellied Snakes, North American Brownsnakes
  Storeria dekayi (Holbrook, 1839) -- valid -- Dekay's Brown Snake, Dekay's Brownsnake, Culebra-parda de Kay, Brown Snake, couleuvre brune, Northern Brown Snake
  Storeria hidalgoensis Taylor, 1942 -- valid -- Culebra-parda hidalguense, Mexican Yellowbelly Brown Snake
  Storeria occipitomaculata (Storer, 1839) -- valid -- Red-bellied Snake, Redbelly Snake, couleuvre à ventre rouge
  Storeria occipitomaculata obscura Trapido, 1944 -- valid -- Florida Redbelly Snake
  Storeria occipitomaculata occipitomaculata (Storer, 1839) -- valid -- Northern Redbelly Snake
  Storeria occipitomaculata pahasapae H. M. Smith, 1963 -- valid -- Black Hills Redbelly Snake
  Storeria storerioides (Cope, 1865) -- valid -- Culebra-parda mexicana, Mexican Brown Snake
  Storeria victa Hay, 1892 -- valid -- Florida Brownsnake, Florida Brown Snake
  Streptophorus labiosus Bocourt, 1883 -- invalid
  Streptophorus maculatus Peters, 1861 -- invalid
  Streptophorus maculatus pavimentatus Bocourt, 1883 -- invalid
  Streptophorus sebae A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Streptophorus sebae punctulata Bocourt, 1883 -- invalid
  Strobilurus Wiegmann, 1834 -- valid
  Strobilurus torquatus Wiegmann, 1834 -- valid
  Styporhynchus celebicus W. C. H. Peters and Doria, 1878 -- invalid
  Styporhynchus truncatus Peters, 1863 -- invalid
  Suta fasciata (Rosén, 1905) -- valid -- Rosen's Snake
  Suta ordensis (Storr, 1984) -- valid -- Ord Curl Snake
  Suta punctata (Boulenger, 1896) -- valid -- Spotted Snake, Little Spotted Snake
  Suta suta (W. C. H. Peters, 1863) -- valid -- Myal Snake, Curl Snake
  Symphimus leucostomus Cope, 1870 -- valid -- Culebra-labios blancos de Tehuantepec, Mexican White-lipped Snake
  Symphimus mayae (Gaige, 1936) -- valid -- Culebra-labios blancos maya, Yucatán White-lipped Snake
  Sympholis lippiens Cope, 1862 -- valid -- Culebra cola corta-mexicana, Mexican Short-tail Snake
  Synophis bicolor Peracca, 1896 -- valid -- Bicolored Shadow Snake
  Synophis bogerti Torres-Carvajal, Echevarría, Venegas, Chávez and Camper, 2015 -- valid -- Bogert's Shadow Snake
  Synophis calamitus Hillis, 1990 -- valid -- Calamitous Shadow Snake
  Synophis insulomontanus Torres-Carvajal, Echevarría, Venegas, Chávez and Camper, 2015 -- valid -- Mountain Shadow Snake
  Synophis lasallei (Nicéforo-María, 1950) -- valid -- La Salle's Shadow Snake
  Synophis niceforomariae Pyron, Arteaga, Echevarría and Torres-Carvajal, 2016 -- valid -- Nicéforo María's Shadow Snake
  Synophis plectovertebralis Sheil and Grant, 2001 -- valid -- Braided Shadow Snake
  Synophis zaheri Pyron, Arteaga, Echevarría and Torres-Carvajal, 2016 -- valid -- Zaher's Shadow Snake
  Synophis zamora Torres-Carvajal, Echevarría, Venegas, Chávez and Camper, 2015 -- valid -- Zamoran Shadow Snake
  Tachymenis affinis Boulenger, 1896 -- valid -- Boulenger's Slender Snake
  Tachymenis attenuata Walker, 1945 -- valid -- Walker's Slender Snake
  Tachymenis attenuata attenuata Walker, 1945 -- valid
  Tachymenis attenuata boliviana Walker, 1945 -- valid
  Tachymenis boulengerii Peracca, 1892 -- invalid
  Tachymenis brasiliensis Gomes, 1918 -- invalid
  Tachymenis chilensis (Schlegel, 1837) -- valid -- Chilean Slender Snake
  Tachymenis chilensis chilensis (Schlegel, 1837) -- valid
  Tachymenis chilensis coronellina Werner, 1898 -- valid
  Tachymenis dromiciformis Peters, 1863 -- invalid
  Tachymenis elongata Despax, 1910 -- valid -- Depax's Slender Snake
  Tachymenis hypoconia Cope, 1860 -- invalid
  Tachymenis infralineatus Günther, 1882 -- invalid
  Tachymenis melanocephala Peters, 1869 -- invalid
  Tachymenis peruviana Wiegmann, 1835 -- valid -- Peru Slender Snake
  Tachymenis peruviana coronellina Werner, 1898 -- invalid
  Tachymenis surinamensis Dunn, 1922 -- invalid
  Tachymenis tarmensis Walker, 1945 -- valid -- Slender Snake
  Taeniophallus affinis (Günther, 1858) -- valid
  Taeniophallus bilineatus (Fischer, 1885) -- valid
  Taeniophallus brevirostris (Peters, 1863) -- valid -- Short-nosed Groundsnake
  Taeniophallus nebularis Schargel, Rivas and Myers, 2005 -- valid
  Taeniophallus nicagus (Cope, 1868) -- valid
  Taeniophallus occipitalis (Jan, 1863) -- valid
  Taeniophallus persimilis (Cope, 1868) -- valid
  Taeniophallus poecilopogon (Cope, 1863) -- valid
  Taeniophallus quadriocellatus Santos, Di-Bernardo and de Lema, 2008 -- valid
  Taeniophis vermiculaticeps Cope, 1860 -- invalid
  Tantalophis discolor (Günther, 1860) -- valid -- Culebra-ojo de gato-falsa oaxaqueña, Oaxacan Cat-eyed Snake
  Tantilla albiceps Barbour, 1925 -- valid -- Barbour's Centipede Snake
  Tantilla alticola (Boulenger, 1903) -- valid -- Boulenger's Centipede Snake
  Tantilla andinista Wilson and Mena, 1980 -- valid -- Andes Centipede Snake
  Tantilla armillata Cope, 1876 -- valid
  Tantilla atriceps (Günther, 1895) -- valid -- Mexican Black-headed Snake, Culebra-encapuchada mexicana, Mexican Blackhead Snake
  Tantilla bairdi Stuart, 1941 -- valid -- Baird's Black-headed Snake
  Tantilla bocourti (Günther, 1895) -- valid -- Culebra-encapuchada de Bocourt, Bocourt's Black-headed Snake
  Tantilla boipiranga Sawaya and Sazima, 2003 -- valid
  Tantilla brevicauda Mertens, 1952 -- valid -- Mertens' Centipede Snake
  Tantilla brevissima Taylor, 1937 -- invalid
  Tantilla briggsi Savitzky and H. M. Smith, 1971 -- valid -- Culebra-ciempiés de Briggs, Briggs' Centipede Snake
  Tantilla calamarina Cope, 1866 -- valid -- Culebra-ciempiés del Pacífico, Pacific Coast Centipede Snake
  Tantilla capistrata Cope, 1876 -- valid -- Capistrata Centipede Snake
  Tantilla cascadae Wilson and Meyer, 1981 -- valid -- Culebra-ciempiés michoacana, Michoacán Centipede Snake
  Tantilla ceboruca Canseco-Márquez, E. N. Smith, Ponce-Campos, Flores-Villela and Campbell, 2007 -- valid -- Ceboruco Centipede Snake
  Tantilla coronadoi Hartweg, 1944 -- valid -- Culebra-ciempiés guerrerense, Guerreran Centipede Snake
  Tantilla coronata Baird and Girard, 1853 -- valid -- Southeastern Crowned Snake
  Tantilla cucullata Minton, 1956 -- valid -- Trans-Pecos Black-headed Snake, Big Bend Black-headed Snake, Big Bend Blackhead Snake
  Tantilla cuniculator H. M. Smith, 1939 -- valid -- Culebra-ciempiés del Petén
  Tantilla deppei (Bocourt, 1883) -- valid -- Culebra-ciempiés de Deppe, Deppe's Centipede Snake
  Tantilla flavilineata H. M. Smith and Burger, 1950 -- valid -- Culebra-ciempiés rayas amarillas, Yellow-lined Centipede Snake
  Tantilla fraseri (Günther, 1895) -- invalid
  Tantilla gracilis Baird and Girard, 1853 -- valid -- Flat-headed Snake, Culebra-ciempiés cabeza plana, Flathead Snake
  Tantilla hendersoni Stafford, 2004 -- valid -- Peten Centipede Snake
  Tantilla hobartsmithi Taylor, 1936 -- valid -- Southwestern Black-headed Snake, Culebra-encapuchada del Suroeste, Southwestern Blackhead Snake, Smith's Black-headed Snake
  Tantilla impensa Campbell, 1998 -- valid -- Greater Centipede Snake
  Tantilla insulamontana Wilson and Mena, 1980 -- valid -- Mountain Centipede Snake
  Tantilla jani (Günther, 1895) -- valid -- Culebra-ciempiés de Jan, Jan's Centipede Snake
  Tantilla johnsoni Wilson, Vaughn and Dixon, 1999 -- valid -- Johnson's Centipede Snake
  Tantilla lempira Wilson and Mena, 1980 -- valid -- Mena's Centipede Snake
  Tantilla lintoni H. M. Smith, 1940 -- invalid
  Tantilla longifrontalis (Boulenger, 1896) -- invalid
  Tantilla marcovani de Lema, 2004 -- invalid
  Tantilla melanocephala (Linnaeus, 1758) -- valid -- Black-headed Snake
  Tantilla miyatai Wilson and Knight, 1987 -- valid
  Tantilla moesta (Günther, 1863) -- valid -- Culebra-ciempiés vientre negro, Blackbelly Centipede Snake
  Tantilla nigra (Boulenger, 1914) -- valid -- Black Centipede Snake
  Tantilla nigriceps Kennicott, 1860 -- valid -- Plains Black-headed Snake, Culebra-encapuchada de pradera, Plains Blackhead Snake
  Tantilla oaxacae Wilson and Meyer, 1971 -- valid -- Culebra-ciempiés oaxaqueña, Oaxacan Centipede Snake
  Tantilla olympia Townsend, Wilson, Medina-Flores and Herrera-B., 2013 -- valid
  Tantilla oolitica Telford, 1966 -- valid -- Rim Rock Crowned Snake
  Tantilla petersi Wilson, 1979 -- valid -- Peters' Black-headed Snake
  Tantilla planiceps (Blainville, 1835) -- valid -- California Black-headed Snake, Western Black-headed Snake, Culebra-encapuchada californiana, Western Blackhead Snake
  Tantilla psittaca McCranie, 2011 -- valid
  Tantilla relicta Telford, 1966 -- valid -- Florida Crowned Snake
  Tantilla relicta neilli Telford, 1966 -- valid -- Central Florida Crowned Snake
  Tantilla relicta pamlica Telford, 1966 -- valid -- Coastal Dunes Crown Snake, Coastal Dunes Crowned Snake
  Tantilla relicta relicta Telford, 1966 -- valid -- Peninsula Crown Snake, Peninsula Crowned Snake
  Tantilla reticulata Cope, 1860 -- valid -- Litter Snake, Reticulate Centipede Snake
  Tantilla robusta Canseco-Márquez, Mendelsohn and Gutiérrez-Mayén, 2002 -- valid -- Pueblan Centipede Snake
  Tantilla rubra Cope, 1875 -- valid -- Reddish Black-headed Snake, Culebra-encapuchada roja, Red Black-headed Snake
  Tantilla ruficeps (Cope, 1894) -- valid
  Tantilla schistosa (Bocourt, 1883) -- valid -- Culebra-ciempiés de tierra colorada, Red Earth Centipede Snake
  Tantilla semicincta (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Ringed Centipede Snake
  Tantilla sertula Wilson and Campbell, 2000 -- valid -- Garland Centipede Snake
  Tantilla shawi Taylor, 1949 -- valid -- Culebra-ciempiés de Potosí, Potosí Centipede Snake
  Tantilla slavensi Pérez-Higareda, H. M. Smith and R. B. Smith, 1985 -- valid -- Culebra-ciempiés de Slavens, Slavens' Centipede Snake
  Tantilla striata Dunn, 1928 -- valid -- Culebra-ciempiés rayada, Striped Centipede Snake
  Tantilla supracincta (Peters, 1863) -- valid -- Banded Centipede Snake
  Tantilla taeniata (Bocourt, 1883) -- valid -- Culebra-ciempiés centroamericana, Central American Centipede Snake
  Tantilla tayrae Wilson, 1983 -- valid -- Culebra-ciempiés del Tacaná, Volcan Tacaná Centipede Snake
  Tantilla tecta Campbell and E. N. Smith, 1997 -- valid -- White-striped Centipede Snake
  Tantilla trilineata (Peters, 1880) -- valid -- Three-lined Centipede Snake
  Tantilla triseriata H. M. Smith and P. W. Smith, 1951 -- valid -- Three-lined Centipede Snake
  Tantilla tritaeniata H. M. Smith and Williams, 1966 -- valid -- Three-banded Centipede Snake
  Tantilla vermiformis (Hallowell, 1861) -- valid -- Hallowell's Centipede Snake
  Tantilla vulcani Campbell, 1998 -- valid -- Vulcan Centipede Snake
  Tantilla wilcoxi Stejneger, 1902 -- valid -- Chihuahuan Black-headed Snake, Culebra-encapuchada chihuahuense, Chihuahuan Blackhead Snake
  Tantilla yaquia H. M. Smith, 1942 -- valid -- Yaqui Black-headed Snake, Culebra-encapuchada yaqui, Yaquia Blackhead Snake
  Tantillita brevissima (Taylor, 1937) -- valid -- Culebra-cola corta jaspeada, Speckled Dwarf Short-tail Snake
  Tantillita canula (Cope, 1876) -- valid -- Culebra-ciempiés imitacoral, Yucatecan Dwarf Short-tail Snake
  Tantillita lintoni (H. M. Smith, 1940) -- valid -- Culebra-cola corta de Linton, Linton's Dwarf Short-tail Snake
  Tantillita lintoni lintoni (H. M. Smith, 1940) -- valid
  Tantillita lintoni rozellae Perez-Higareda, 1985 -- valid
  Tapaya brevirostris Girard, 1858 -- invalid
  Tarbophis beetzi Barbour, 1922 -- invalid
  Tarbophis dhara somalicus Parker, 1949 -- invalid
  Tarbophis fallax Fleischmann, 1831 -- invalid
  Tarbophis fallax cyprianus Barbour and Amaral, 1927 -- invalid
  Tarbophis nigriceps Ahl, 1924 -- invalid
  Tarbophis tessellatus Wall, 1908 -- invalid
  Tarbophis vivax syriaca Boettger, 1880 -- invalid
  Teleolepis striaticeps Cope, 1870 -- invalid
  Telescopus beetzi (Barbour, 1922) -- valid -- Namib Tiger Snake, Karoo Tiger Snake
  Telescopus dhara (Forskal, 1775) -- valid -- Large-eyed Cat Snake, Israeli Cat Snake, Arabian Cat Snake
  Telescopus dhara dhara (Forskal, 1775) -- valid
  Telescopus dhara somalicus (Parker, 1949) -- valid
  Telescopus fallax (Fleischmann, 1831) -- valid -- Mediterranean Cat Snake, European Cat Snake
  Telescopus fallax cyprianus (Barbour and Amaral, 1927) -- valid
  Telescopus fallax fallax (Fleischmann, 1831) -- valid
  Telescopus fallax iberus (Eichwald, 1831) -- valid
  Telescopus fallax intermedius Gruber, 1974 -- valid
  Telescopus fallax multisquamatus Wettstein, 1952 -- valid
  Telescopus fallax pallidus Stepanek, 1944 -- valid
  Telescopus fallax syriacus (Boettger, 1880) -- valid
  Telescopus finkeldeyi Haacke, 2013 -- valid -- Damara Tiger Snake
  Telescopus gezirae Broadley, 1994 -- valid -- Blue Nile Cat Snake
  Telescopus hoogstraali Schmidt and Marx, 1956 -- valid
  Telescopus nigriceps (Ahl, 1924) -- valid -- Black-headed Snake
  Telescopus obtusus (Reuss, 1834) -- valid -- Egyptian Catsnake, Egyptian Cat Snake
  Telescopus pulcher (Scortecci, 1935) -- valid -- Beautiful Cat Snake
  Telescopus rhinopoma (Blanford, 1874) -- valid -- Indian Desert Tiger Snake
  Telescopus semiannulatus A. Smith, 1849 -- valid -- Common Tiger Snake, Western Tiger Snake, Tiger Cat Snake
  Telescopus semiannulatus polystictus Mertens, 1954 -- valid -- Damara Tiger Snake
  Telescopus semiannulatus semiannulatus A. Smith, 1849 -- valid
  Telescopus tessellatus (Wall, 1908) -- valid -- Soosan Tiger Snake
  Telescopus tripolitanus (Werner, 1909) -- valid
  Telescopus variegatus (Reinhardt, 1843) -- valid -- Variable Cat Snake
  Temnorhynchus frontalis Peters, 1867 -- invalid
  Temnorhynchus lineatus Peters, 1871 -- invalid
  Temnorhynchus sundevalli A. Smith, 1849 -- invalid
  Tetralepis Boettger, 1892 -- valid
  Tetralepis fruhstorferi Boettger, 1892 -- valid -- Bluebelly Java Snake
  Thalassophis anomala P. Schmidt, 1852 -- invalid
  Thalassophis anomalus P. Schmidt, 1852 -- valid -- Anomalous Sea Snake
  Thalassophis viperina P. Schmidt, 1852 -- invalid
  Thalesius viridis (Werner, 1924) -- invalid
  Thamnocenchris aurifer Salvin, 1860 -- invalid
  Thamnodynastes almae Franco and Ferreira, 2003 -- valid
  Thamnodynastes ceibae Bailey and Thomas, 2007 -- valid
  Thamnodynastes chaquensis Bergna and Alvarez, 1993 -- valid
  Thamnodynastes chimanta Roze, 1958 -- valid -- Roze's Coastal House Snake
  Thamnodynastes corocoroensis Gorzula and Ayarzagüena, 1996 -- valid
  Thamnodynastes dixoni Bailey and Thomas, 2007 -- valid
  Thamnodynastes duida Myers and Donnelly, 1996 -- valid
  Thamnodynastes gambotensis Pérez-Santos and Moreno, 1989 -- valid
  Thamnodynastes hypoconia (Cope, 1860) -- valid
  Thamnodynastes lanei Bailey, Thomas and da Silva, 2005 -- valid
  Thamnodynastes longicaudus Franco, Ferreira, Marques and Sazima, 2003 -- valid
  Thamnodynastes marahuaquensis Gorzula and Ayarzagüena, 1996 -- valid
  Thamnodynastes pallidus (Linnaeus, 1758) -- valid -- Amazon Coastal House Snake
  Thamnodynastes paraguanae Bailey and Thomas, 2007 -- valid
  Thamnodynastes ramonriveroi Manzanilla and Sánchez, 2005 -- valid
  Thamnodynastes rutilus (Prado, 1942) -- valid -- Prado's Coastal House Snake
  Thamnodynastes sertanejo Bailey, Thomas and da Silva, 2005 -- valid
  Thamnodynastes strigatus (Günther, 1858) -- valid -- Coastal House Snake
  Thamnodynastes yavi Myers and Donnelly, 1996 -- valid
  Thamnophis Fitzinger, 1843 -- valid -- Garter Snakes, Ribbon Snakes, North American Gartersnakes
  Thamnophis atratus (Kennicott in Cooper, 1860) -- valid -- Santa Cruz Garter Snake, Western Aquatic Garter Snake, Aquatic Garter Snake, Pacific Coast Aquatic Garter Snake, Aquatic Gartersnake
  Thamnophis atratus aquaticus Fox, 1951 -- invalid
  Thamnophis atratus atratus (Kennicott in Cooper, 1860) -- valid -- Santa Cruz Gartersnake
  Thamnophis atratus hydrophilus Fitch, 1936 -- valid -- Oregon Garter Snake, Oregon Gartersnake
  Thamnophis atratus zaxanthus Boundy, 1999 -- valid -- Diablo Range Gartersnake
  Thamnophis bogerti Rossman and Burbrink, 2005 -- valid
  Thamnophis bovalli Dunn, 1940 -- invalid
  Thamnophis brachystoma (Cope, 1892) -- valid -- Short-headed Garter Snake, Shorthead Garter Snake, Short-headed Gartersnake
  Thamnophis butleri (Cope, 1889) -- valid -- Butler's Garter Snake, Butler's Gartersnake
  Thamnophis chrysocephalus (Cope, 1885) -- valid -- Culebra-listonada cabeza dorada, Goldenhead Garter Snake
  Thamnophis conanti Rossman and Burbrink, 2005 -- valid
  Thamnophis couchii (Kennicott in Baird, 1859) -- valid -- Couch's Garter Snake, Sierra Garter Snake, Western Aquatic Garter Snake, Sierra Gartersnake
  Thamnophis cyrtopsis (Kennicott, 1860) -- valid -- Black-necked Garter Snake, Culebra-listonada cuello negro, Blackneck Garter Snake, Black-necked Gartersnake
  Thamnophis cyrtopsis collaris (Jan, 1863) -- valid
  Thamnophis cyrtopsis cyrtopsis (Kennicott, 1860) -- valid -- Western Black-headed Snake, Western Black-necked Gartersnake
  Thamnophis cyrtopsis ocellatus (Cope, 1880) -- valid -- Black-headed Garter Snake, Eastern Black-necked Gartersnake
  Thamnophis cyrtopsis postremus H. M. Smith, 1942 -- invalid
  Thamnophis elegans (Baird and Girard, 1853) -- valid -- Western Terrestrial Garter Snake, Culebra-listonada elegante, Terrestrial Garter Snake
  Thamnophis elegans arizonae Tanner and Lowe, 1989 -- invalid -- Arizona Garter Snake
  Thamnophis elegans elegans (Baird and Girard, 1853) -- valid -- Mountain Garter Snake, Mountain Gartersnake
  Thamnophis elegans hueyi Van Denburgh and Slevin, 1923 -- valid
  Thamnophis elegans nigrescens Johnson, 1947 -- invalid
  Thamnophis elegans terrestris Fox, 1951 -- valid -- Coast Garter Snake, Coast Gartersnake
  Thamnophis elegans vagrans (Baird and Girard, 1853) -- valid -- Wandering Garter Snake, Wandering Gartersnake
  Thamnophis elegans vascotanneri Tanner and Lowe, 1989 -- invalid -- Upper Basin Garter Snake
  Thamnophis eques (Reuss, 1834) -- valid -- Mexican Garter Snake, Culebra-listonada del sur-mexicano, Mexican Gartersnake
  Thamnophis eques carmenensis Conant, 2003 -- valid
  Thamnophis eques cuitzeoensis Conant, 2003 -- valid
  Thamnophis eques diluvialis Conant, 2003 -- valid
  Thamnophis eques eques (Reuss, 1834) -- valid -- Mexican Garter Snake
  Thamnophis eques insperatus Conant, 2003 -- valid
  Thamnophis eques megalops (Kennicott, 1860) -- valid -- Northern Mexican Garter Snake, Northern Mexican Gartersnake, Brown Gartersnake
  Thamnophis eques obscurus Conant, 2003 -- valid
  Thamnophis eques patzcuaroensis Conant, 2003 -- valid
  Thamnophis eques scotti Conant, 2003 -- valid
  Thamnophis eques virgatenuis Conant, 1963 -- valid
  Thamnophis errans H. M. Smith, 1942 -- valid -- Culebra-listonada errante, Mexican Wandering Garter Snake
  Thamnophis exsul Rossman, 1969 -- valid -- Culebra-listonada de montaña, Montane Garter Snake
  Thamnophis fulvus (Bocourt, 1893) -- valid -- Culebra-listonada amarillenta, Highland Garter Snake
  Thamnophis gigas Fitch, 1940 -- valid -- Giant Garter Snake, Giant Gartersnake
  Thamnophis godmani (Günther, 1894) -- valid -- Culebra-listonada de Godman, Godman's Garter Snake
  Thamnophis hammondii (Kennicott, 1860) -- valid -- Two-striped Garter Snake, Two-striped Gartersnake
  Thamnophis lineri Rossman and Burbrink, 2005 -- valid
  Thamnophis marcianus (Baird and Girard, 1853) -- valid -- Checkered Garter Snake, Culebra-listonada manchada, Checkered Gartersnake
  Thamnophis marcianus marcianus (Baird and Girard, 1853) -- valid -- Checkered Garter Snake, Marcy's Checkered Gartersnake
  Thamnophis marcianus praeocularis (Bocourt, 1892) -- valid
  Thamnophis melanogaster (Peters, 1864) -- valid -- Culebra-de agua vientre negro, Blackbelly Garter Snake
  Thamnophis melanogaster canescens H. M. Smith, 1942 -- valid
  Thamnophis melanogaster chihuahuaensis Tanner, 1959 -- valid
  Thamnophis melanogaster linearis H. M. Smith, Nixon and P. W. Smith, 1950 -- valid
  Thamnophis melanogaster melanogaster (Peters, 1864) -- valid
  Thamnophis mendax Walker, 1955 -- valid -- Culebra-listonada tamaulipeca, Tamaulipan Montane Garter Snake
  Thamnophis nigronuchalis Thompson, 1957 -- valid -- Southern Durango Spotted Garter Snake
  Thamnophis ordinoides (Baird and Girard, 1852) -- valid -- Northwestern Garter Snake, Puget Sound Garter Snake, Northwestern Gartersnake
  Thamnophis ordinoides hydrophila Fitch, 1936 -- invalid
  Thamnophis postremus H. M. Smith, 1942 -- valid
  Thamnophis proximus (Say in James, 1823) -- valid -- Western Ribbon Snake, Culebra-listonada occidental, Western Ribbonsnake
  Thamnophis proximus alpinus Rossman, 1963 -- valid
  Thamnophis proximus diabolicus Rossman, 1963 -- valid -- Arid Land Ribbon Snake, Arid Land Ribbonsnake
  Thamnophis proximus orarius Rossman, 1963 -- valid -- Gulf Coast Ribbon Snake, Gulf Coast Ribbonsnake
  Thamnophis proximus proximus (Say in James, 1823) -- valid -- Western Ribbon Snake, Orange-striped Ribbonsnake
  Thamnophis proximus rubrilineatus Rossman, 1963 -- valid -- Redstripe Ribbon Snake, Red-striped Ribbonsnake
  Thamnophis proximus rutiloris (Cope, 1885) -- valid
  Thamnophis pulchrilatus (Cope, 1885) -- valid -- Culebra-listonada de tierras altas-mexicana, Yellow-throated Garter Snake
  Thamnophis radix (Baird and Girard, 1853) -- valid -- Plains Garter Snake, Plains Gartersnake, Eastern Plains Garter Snake
  Thamnophis rossmani Conant, 2000 -- valid -- Rossman's Garter Snake
  Thamnophis rufipunctatus (Cope, 1875) -- valid -- Culebra-de agua cabeza angosta, Narrow-headed Garter Snake, Narrowhead Garter Snake, Narrowhead Watersnake, Narrow-headed Gartersnake
  Thamnophis rufipunctatus unilabialis Tanner, 1985 -- invalid
  Thamnophis saurita (Linnaeus, 1766) -- valid -- Eastern Ribbonsnake
  Thamnophis saurita nitae Rossman, 1963 -- valid -- Bluestripe Ribbon Snake, Blue-striped Ribbonsnake
  Thamnophis saurita sackenii (Kennicott, 1859) -- valid -- Peninsula Ribbonsnake, Peninsula Ribbon Snake
  Thamnophis saurita saurita (Linnaeus, 1766) -- valid -- Eastern Ribbon Snake, Common Ribbonsnake
  Thamnophis saurita sepentrionalis Rossman, 1963 -- valid -- Northern Ribbonsnake, Northern Ribbon Snake
  Thamnophis sauritus (Linnaeus, 1766) -- invalid -- Eastern Ribbon Snake, Eastern Ribbonsnake
  Thamnophis scalaris Cope, 1861 -- valid -- Culebra-listonada de montaña-cola larga, Longtail Alpine Garter Snake
  Thamnophis scaliger (Jan, 1863) -- valid -- Culebra-listonada de montaña-cola corta, Short-tail Alpine Garter Snake
  Thamnophis sirtalis (Linnaeus, 1758) -- valid -- Common Garter Snake, couleuvre rayée, Culebra-listonada común, Common Gartersnake
  Thamnophis sirtalis annectens Brown, 1950 -- valid -- Texas Garter Snake, Texas Gartersnake
  Thamnophis sirtalis concinnus (Hallowell, 1852) -- valid -- Red-spotted Garter Snake, Red-spotted Gartersnake
  Thamnophis sirtalis dorsalis (Baird and Girard, 1853) -- valid -- New Mexico Garter Snake, New Mexico Gartersnake
  Thamnophis sirtalis fitchi Fox, 1951 -- valid -- Valley Garter Snake, Valley Gartersnake
  Thamnophis sirtalis infernalis (Blainville, 1835) -- valid -- California Red-sided Garter Snake, California Red-sided Gartersnake
  Thamnophis sirtalis lowei Tanner, 1988 -- valid
  Thamnophis sirtalis pallidulus Allen, 1899 -- valid -- Maritime Garter Snake
  Thamnophis sirtalis parietalis (Say in James, 1823) -- valid -- Red-sided Garter Snake, Red-sided Gartersnake
  Thamnophis sirtalis pickeringii (Baird and Girard, 1853) -- valid -- Puget Sound Garter Snake, Puget Sound Gartersnake
  Thamnophis sirtalis semifasciatus (Cope, 1892) -- valid -- Chicago Garter Snake, Chicago Gartersnake
  Thamnophis sirtalis similis Rossman, 1965 -- valid -- Blue-striped Garter Snake, Bluestripe Garter Snake, Blue-striped Gartersnake
  Thamnophis sirtalis sirtalis (Linnaeus, 1758) -- valid -- Eastern Garter Snake, Eastern Gartersnake
  Thamnophis sirtalis tetrataenia (Cope in Yarrow, 1875) -- valid -- San Francisco Garter Snake, San Francisco Gartersnake
  Thamnophis sumichrasti (Cope, 1867) -- valid -- Culebra-listonada de Sumichrast, Sumichrast's Garter Snake
  Thamnophis unilabialis Tanner, 1985 -- valid -- Madrean Narrowheaded Garter Snake
  Thamnophis validus (Kennicott, 1860) -- valid -- West Coast Garter Snake
  Thamnophis validus celaeno (Cope, 1861) -- valid
  Thamnophis validus isabellae (Conant, 1953) -- valid
  Thamnophis validus thamnophisoides (Conant, 1961) -- valid
  Thamnophis validus validus (Kennicott, 1860) -- valid
  Thamnosophis epistibes (Cadle, 1996) -- valid
  Thamnosophis infrasignatus (Günther, 1882) -- valid
  Thamnosophis lateralis (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Lateral Water Snake
  Thamnosophis martae (Glaw, Franzen and Vences, 2005) -- valid
  Thamnosophis mavotenda Glaw, Nagy, Köhler, Franzen and Vences, 2009 -- valid
  Thamnosophis stumpffi (Boettger, 1881) -- valid -- Yellow-striped Water Snake
  Thaumatorhynchus Parker, 1924 -- valid
  Thaumatorhynchus brooksi Parker, 1924 -- valid
  Thelotornis capensis A. Smith, 1849 -- valid -- Twig Snake, Savanna Vine Snake
  Thelotornis capensis capensis A. Smith, 1849 -- valid
  Thelotornis capensis oatesi (Günther, 1881) -- valid -- Oates' Vine Snake
  Thelotornis capensis schilsi Derleyn, 1978 -- valid
  Thelotornis kirtlandii (Hallowell, 1844) -- valid -- Forest Vine Snake, Bird Snake, Twig Snake
  Thelotornis mossambicanus (Bocage, 1895) -- valid -- Vine Snake, Eastern Twig Snake, Eastern Vine Snake
  Thelotornis usambaricus Broadley, 2001 -- valid -- Usambara Vine Snake
  Thermophis baileyi (Wall, 1907) -- valid -- Xizang Hot-spring Keel-back
  Thermophis shangrila Peng, Lu, Huang, Guo and Zhang, 2014 -- valid -- Shangri-La Hot Spring Snake, Shangri-La Hot-spring Snake
  Thermophis zhaoermii Guo, Liu, Feng and He, 2008 -- valid -- Sichuan Hot-spring Keel-back
  Thrasops batesii Boulenger, 1908 -- invalid
  Thrasops cupreus Cope, 1868 -- invalid
  Thrasops flavigularis (Hallowell, 1852) -- valid -- Yellow-throated Bold-eyed Tree Snake
  Thrasops jacksonii Günther, 1895 -- valid -- Black Tree Snake
  Thrasops jacksonii schmidti Loveridge, 1936 -- invalid
  Thrasops occidentalis Parker, 1940 -- valid -- Western Tree Snake, Black Tree Snake, Western Black Tree Snake
  Thrasops praestans Cope, 1868 -- invalid
  Thrasops schmidti Loveridge, 1936 -- valid -- Schmidt's Bold-eyed Tree Snake
  Toluca frontalis Cope, 1864 -- invalid
  Tomodon dorsatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Pampas Snake
  Tomodon lineatum A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Tomodon ocellatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Ocellated Pampas Snake
  Tomodon orestes Harvey and Muñoz, 2004 -- valid
  Tomodon strigatus Günther, 1858 -- invalid
  Tomogaster eydouxii Gray, 1849 -- invalid
  Tomyris oxiana Eichwald, 1831 -- invalid
  Toxicocalamus buergersi (Sternfeld, 1913) -- valid -- Buerger's Forest Snake
  Toxicocalamus ernstmayri O'Shea, Parker and Kaiser, 2015 -- valid -- Star Mountains Worm-Eating Snake
  Toxicocalamus grandis (Boulenger, 1914) -- valid -- Setekwa River Forest Snake
  Toxicocalamus holopelturus McDowell, 1969 -- valid -- Mt Rossel Forest Snake
  Toxicocalamus longissimus Boulenger, 1896 -- valid -- Woodlark Island Forest Snake, Fergusson Island Forest Snake
  Toxicocalamus loriae (Boulenger, 1898) -- valid -- Loria Forest Snake
  Toxicocalamus mintoni Kraus, 2009 -- valid
  Toxicocalamus misimae McDowell, 1969 -- valid -- Misima Island Forest Snake
  Toxicocalamus pachysomus Kraus, 2009 -- valid
  Toxicocalamus preussi (Sternfeld, 1913) -- valid -- Preuss's Forest Snake
  Toxicocalamus preussi angusticinctus (Bogert and Matalas, 1945) -- valid
  Toxicocalamus preussi preussi (Sternfeld, 1913) -- valid
  Toxicocalamus spilolepidotus McDowell, 1969 -- valid -- Spotted Forest Snake
  Toxicocalamus stanleyanus Boulenger, 1903 -- valid -- Owen Stanley Range Forest Snake
  Toxicodryas blandingii (Hallowell, 1844) -- valid -- Blandings Tree Snake
  Toxicodryas pulverulenta (Fischer, 1856) -- valid -- Fischer's Cat Snake
  Trachischium Günther, 1853 -- valid
  Trachischium fuscum (Blyth, 1854) -- valid -- Blackbelly Worm-eating Snake
  Trachischium guentheri Boulenger, 1890 -- valid -- Rosebelly Worm-eating Snake
  Trachischium laeve Peracca, 1904 -- valid -- Olive Oriental Slender Snake
  Trachischium monticola (Cantor, 1839) -- valid -- Mountain Worm-eating Snake
  Trachischium tenuiceps (Blyth, 1854) -- valid -- Yellowbelly Worm-eating Snake
  Tragops dispar Günther, 1864 -- invalid
  Tragops fasciolatus Fischer, 1885 -- invalid
  Trapelus Cuvier, 1817 -- valid
  Trapelus agilis (Oliver, 1807) -- valid -- Brilliant Ground Agama
  Trapelus agilis agilis (Oliver, 1807) -- valid
  Trapelus agilis isolepis (Boulenger, 1885) -- valid
  Trapelus agilis khuzistanensis Rastegar-Pouyani, 1999 -- valid
  Trapelus agilis pakistanensis Rastegar-Pouyani, 1999 -- valid
  Trapelus agnetae (Werner, 1929) -- valid
  Trapelus boehmei Wagner, Melville, Wilms and Schmitz, 2011 -- valid
  Trapelus flavimaculatus Rüppell, 1835 -- valid -- Yellow-spotted Agama
  Trapelus jayakari (Anderson, 1896) -- valid
  Trapelus megalonyx Günther, 1864 -- valid -- Afghan Ground Agama
  Trapelus mutabilis (Merrem, 1820) -- valid -- Desert Agama
  Trapelus mutabilis mutabilis (Merrem, 1820) -- valid
  Trapelus mutabilis pallidus (Reuss, 1834) -- valid
  Trapelus mutabilis poppeki Wagner, Melville, Wilms and Schmitz, 2011 -- valid
  Trapelus rubrigularis Blanford, 1876 -- valid -- Red-throated Agama
  Trapelus ruderatus (Oliver, 1804) -- valid -- Olivier's Agama, Horny-scaled Agama
  Trapelus ruderatus fieldii (Haas and Werner, 1969) -- valid
  Trapelus ruderatus ruderatus (Oliver, 1804) -- valid
  Trapelus sanguinolentus (Pallas, 1814) -- valid -- Steppe Agama
  Trapelus sanguinolentus aralensis (Lichtenstein, 1823) -- valid
  Trapelus sanguinolentus sanguinolentus (Pallas, 1814) -- valid
  Trapelus savignii (A. M. C. Duméril and Bibron, 1837) -- valid
  Trapelus schmitzi Wagner and Böhme, 2006 -- valid -- Schmitz' Agama
  Trapelus tournevillei (Lataste, 1880) -- valid -- Sahara Agama
  Trasops marginatus Cope, 1862 -- invalid
  Tretanorhinus insulaepinorum Barbour, 1916 -- invalid
  Tretanorhinus lateralis Bocourt, 1891 -- invalid
  Tretanorhinus mocquardi Bocourt, 1891 -- valid -- Mocquard's Swamp Snake
  Tretanorhinus nigroluteus Cope, 1861 -- valid -- Culebra-buceadora vientre naranja, Orangebelly Swamp Snake
  Tretanorhinus nigroluteus dichromaticus Villa, 1969 -- valid
  Tretanorhinus nigroluteus lateralis Bocourt, 1891 -- valid
  Tretanorhinus nigroluteus nigroluteus Cope, 1861 -- valid
  Tretanorhinus nigroluteus obscurus Villa, 1969 -- valid
  Tretanorhinus taeniatus Boulenger, 1903 -- valid -- Striped Swamp Snake
  Tretanorhinus variabilis A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Caribbean Water Snake
  Tretanorhinus variabilis binghami Schwartz and Ogren, 1956 -- valid
  Tretanorhinus variabilis insulaepinorum Barbour, 1916 -- valid
  Tretanorhinus variabilis lewisi Grant, 1941 -- valid
  Tretanorhinus variabilis variabilis A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid
  Tretanorhinus variabilis wagleri (Jan, 1863) -- valid
  Triceratolepidophis sieversorum Ziegler, Herrmann, David, Orlov and Pauwels, 2000 -- invalid
  Triglyphodon cyaneum A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Triglyphodon forsteni A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Triglyphodon gemmicinctum A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Triglyphodon jaspideum A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Trigonocephalus affinis Gray, 1849 -- invalid
  Trigonocephalus asper Garman, 1883 -- invalid
  Trigonocephalus blomhoffii H. Boie, 1826 -- invalid
  Trigonocephalus cantori Blyth, 1846 -- invalid
  Trigonocephalus caraganus Eichwald, 1831 -- invalid
  Trigonocephalus caribbaeus Garman, 1887 -- invalid
  Trigonocephalus erythrurus Cantor, 1839 -- invalid
  Trigonocephalus intermedius Strauch, 1868 -- invalid
  Trigonocephalus lansbergii Schlegel, 1841 -- invalid
  Trigonocephalus malabaricus Jerdon, 1854 -- invalid
  Trigonocephalus mucrosquamatus Cantor, 1839 -- invalid
  Trigonocephalus pubescens Cope, 1870 -- invalid
  Trigonocephalus pulcher Peters, 1862 -- invalid
  Trigonocephalus purpureomaculatus Gray, 1832 -- invalid
  Trigonocephalus rhodostoma Kuhl, 1824 -- invalid
  Trigonocephalus schlegelii Berthold, 1846 -- invalid
  Trigonocephalus undulatus Jan, 1859 -- invalid
  Trigonocephalus zara Gray, 1849 -- invalid
  Trigonophis iberus Eichwald, 1831 -- invalid
  Trimeresurus albolabris Gray, 1842 -- valid -- White-lipped Tree Viper, White-lipped Pitviper
  Trimeresurus andalasensis David, Vogel, Vijayakumar and Vidal, 2006 -- valid
  Trimeresurus andersoni Theobald, 1868 -- valid -- Andaman Pitviper, Anderson's Pitviper
  Trimeresurus barati Regenass and Kramer, 1981 -- valid -- Barat Bamboo Pitviper
  Trimeresurus borneensis (Peters, 1872) -- valid -- Borneo Pit Viper
  Trimeresurus brongersmai Hoge, 1969 -- valid -- Brongersma's Pit Viper
  Trimeresurus buniana (L. L. Grismer, J. L. Grismer and McGuire, 2006) -- valid -- Fairy Pitviper
  Trimeresurus cantori (Blyth, 1846) -- valid -- Cantor's Pit Viper
  Trimeresurus cardamomensis (Malhotra, Thorpe, Mrinalini and Stuart, 2011) -- valid -- Cardamom Mountains Green Pitviper
  Trimeresurus chaseni M. A. Smith, 1931 -- invalid
  Trimeresurus convictus Stoliczka, 1870 -- invalid
  Trimeresurus dunni Hartweg and Oliver, 1938 -- invalid
  Trimeresurus erythrurus (Cantor, 1839) -- valid -- Redtail Pitviper, Bamboo Pitviper
  Trimeresurus fasciatus (Boulenger, 1896) -- valid -- Banded Pit Viper
  Trimeresurus flavomaculatus (Gray, 1842) -- valid -- Philippine Pitviper
  Trimeresurus flavoviridis tinkhami Gloyd, 1955 -- invalid
  Trimeresurus fucatus Vogel, David and Pauwels, 2004 -- valid -- Siamese Peninsula Pitviper
  Trimeresurus gracilis Oshima, 1920 -- valid -- Kikuchi Habu
  Trimeresurus gramineus (Shaw, 1802) -- valid -- Common Bamboo Viper
  Trimeresurus gumprechti David, Vogel, Pauwels and Vidal, 2002 -- valid -- Gumprecht's Green Pitviper
  Trimeresurus gunaleni Vogel, David and Sidik, 2014 -- valid -- Gunalen's Pitviper
  Trimeresurus hageni (Van Lidth de Jeude, 1886) -- valid -- Indonesian Pit Viper, Hagen's Pitviper
  Trimeresurus honsonensis (L. L. Grismer, Ngo and J. L. Grismer, 2008) -- valid
  Trimeresurus huttoni M. A. Smith, 1949 -- invalid
  Trimeresurus insularis Kramer, 1977 -- valid -- White-lipped Island Pitviper
  Trimeresurus kanburiensis M. A. Smith, 1943 -- valid -- Kanburi Pit Viper
  Trimeresurus labialis Steindachner, 1867 -- valid -- Island Pit Viper, Nicobar Bamboo Pitviper
  Trimeresurus laticinctus Kuch, Gumprecht and Melaun, 2007 -- invalid
  Trimeresurus macrolepis Beddome, 1862 -- valid
  Trimeresurus macrops Kramer, 1977 -- valid -- Kramer's Pit Viper, Large-eyed Pitviper
  Trimeresurus makazayazaya Takahashi, 1922 -- invalid
  Trimeresurus malabaricus (Jerdon, 1854) -- valid -- Malabarian Pit Viper
  Trimeresurus malcolmi Loveridge, 1938 -- valid -- Malcolm's Pitviper
  Trimeresurus mcgregori Taylor, 1919 -- valid -- McGregor's Pitviper, McGregor's Tree Viper
  Trimeresurus medoensis Zhao, 1977 -- valid -- Green Bamboo Leaf Pit Viper, Motuo Bamboo Pitviper
  Trimeresurus melanurus Müller, 1924 -- invalid
  Trimeresurus monticola Günther, 1864 -- invalid
  Trimeresurus monticola zayuensis Jiang, 1977 -- invalid
  Trimeresurus mutabilis Stoliczka, 1870 -- valid -- Central Nicobar Bamboo Pitviper, Central Nicobar Pit Viper
  Trimeresurus nebularis Vogel, David and Pauwels, 2004 -- valid -- Cameron Highlands Pitviper, Clouded Pitviper
  Trimeresurus nummifer picadoi Dunn, 1939 -- invalid
  Trimeresurus okinavensis Boulenger, 1892 -- invalid
  Trimeresurus orientalis Schmidt, 1925 -- invalid
  Trimeresurus philippensis Gray, 1842 -- invalid
  Trimeresurus phuketensis Sumontha, Kunya, Pauwels, Nitikul and Punnadee, 2011 -- valid -- Phuket Pitviper
  Trimeresurus popeiorum M. A. Smith, 1937 -- valid -- Pope's Tree Viper, Pope's Bamboo Pit Viper, Pope's Green Pit Viper
  Trimeresurus puniceus (F. Boie, 1827) -- valid -- Ashy Pit Viper, Flat-nosed Pitviper
  Trimeresurus purpureomaculatus (Gray, 1832) -- valid -- Shore Pit Viper, Mangrove Viper
  Trimeresurus rubeus (Malhotra, Thorpe, Mrinalini and Stuart, 2011) -- valid -- Ruby-eyed Green Pitviper
  Trimeresurus sabahi Regenass and Kramer, 1981 -- valid -- Sabah Bamboo Pitviper
  Trimeresurus schultzei Griffin, 1909 -- valid -- Schultze's Pit Viper
  Trimeresurus septentrionalis Kramer, 1977 -- valid -- Nepal Pitviper
  Trimeresurus sichuanensis (Guo and Wang, 2011) -- valid
  Trimeresurus stejnegeri K. P. Schmidt, 1925 -- valid -- Chinese Green Tree Viper
  Trimeresurus stejnegeri chenbihuii Zhao, 1995 -- valid -- Chen's Bamboo Pitviper
  Trimeresurus stejnegeri stejnegeri K. P. Schmidt, 1925 -- valid -- Stejneger's Bamboo Pitviper
  Trimeresurus strigatus Gray, 1842 -- valid -- Horseshoe Pitviper
  Trimeresurus subannulatus Gray, 1842 -- invalid
  Trimeresurus sumatranus (Raffles, 1822) -- valid -- Sumatra Pit Viper
  Trimeresurus tibetanus Huang, 1982 -- valid -- Tibetan Pit Viper
  Trimeresurus toba David, Petri, Vogel and Doria, 2009 -- valid -- Toba Pitviper
  Trimeresurus tonkinensis Bourret, 1934 -- invalid
  Trimeresurus trigonocephalus (Latreille, 1801) -- valid -- Ceylon Pit Viper, Sri Lankan Green Pitviper
  Trimeresurus truongsonensis Orlov, Ryabov, Thanh and H. Cuc, 2004 -- valid -- Quang Binh Pitviper
  Trimeresurus venustus Vogel, 1991 -- valid -- Brown-spotted Pit Viper, Beautiful Pitviper
  Trimeresurus vogeli David, Vidal and Pauwels, 2001 -- valid -- Vogel's Pit Viper
  Trimeresurus wiroti Trutnau, 1981 -- valid -- Wirot's Pit Viper
  Trimeresurus xanthomelas Günther, 1889 -- invalid
  Trimeresurus yucatanicus H. M. Smith, 1941 -- invalid
  Trimeresurus yunnanensis K. P. Schmidt, 1925 -- valid -- Yunnan Bamboo Pitviper
  Trimerodytes balteatus Cope, 1895 -- invalid
  Trimerorhinus tritaeniatus multisquamis Loveridge, 1932 -- invalid
  Trimetopon barbouri Dunn, 1930 -- valid -- Barbour's Tropical Ground Snake
  Trimetopon gracile (Günther, 1872) -- valid -- Günther's Tropical Ground Snake
  Trimetopon hannsteini Stuart, 1949 -- invalid
  Trimetopon pilonaorum Stuart, 1954 -- invalid
  Trimetopon pliolepis Cope, 1894 -- valid -- Cope's Tropical Ground Snake
  Trimetopon posadasi Slevin, 1936 -- invalid
  Trimetopon simile Dunn, 1930 -- valid -- Dunn's Tropical Ground Snake
  Trimetopon slevini Dunn, 1940 -- valid -- Slevin's Tropical Ground Snake
  Trimetopon viquezi Dunn, 1937 -- valid -- Viquez's Tropical Ground Snake
  Trimorphodon biscutatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Western Lyre Snake, Culebra-lira cabeza negra, Costal Lyre Snake
  Trimorphodon biscutatus quadruplex H. M. Smith, 1941 -- invalid
  Trimorphodon lambda Cope, 1886 -- valid -- Sonoran Lyre Snake, Sonoran Lyresnake
  Trimorphodon lyrophanes (Cope, 1860) -- valid -- California Lyresnake, Baja California Lyre Snake
  Trimorphodon paucimaculatus Taylor, 1938 -- valid -- Sinaloan Lyresnake
  Trimorphodon quadruplex H. M. Smith, 1941 -- valid
  Trimorphodon tau Cope, 1870 -- valid -- Culebra-lira mexicana, Mexican Lyre Snake
  Trimorphodon tau latifascia (Peters, 1870) -- valid
  Trimorphodon tau tau Cope, 1870 -- valid
  Trimorphodon vilkinsonii Cope, 1886 -- valid -- Texas Lyre Snake, Texas Lyresnake
  Trioceros Swainson, 1839 -- valid
  Trioceros affinis (Rüppell, 1845) -- valid -- Ruppell's Desert Chameleon
  Trioceros balebicornutus (Tilbury, 1998) -- valid
  Trioceros bitaeniatus (Fischer, 1884) -- valid -- Two-lined Chameleon
  Trioceros camerunensis (L. Müller, 1909) -- valid
  Trioceros chapini (de Witte, 1964) -- valid -- Gray Chameleon
  Trioceros conirostratus (Tilbury, 1998) -- valid
  Trioceros cristatus (Stutchbury, 1837) -- valid -- Crested Chameleon
  Trioceros deremensis (Matschie, 1892) -- valid -- Wavy Chameleon
  Trioceros eisentrauti (Mertens, 1968) -- invalid
  Trioceros ellioti (Günther, 1895) -- valid -- Montane Side-striped Chameleon
  Trioceros feae (Boulenger, 1906) -- valid
  Trioceros fuelleborni (Tornier, 1900) -- valid -- Ngosi Volcano Chameleon
  Trioceros goetzei (Tornier, 1899) -- valid -- Ilolo Chameleon
  Trioceros goetzei goetzei (Tornier, 1899) -- valid
  Trioceros goetzei nyikae (Loveridge, 1953) -- valid
  Trioceros hanangensis Krause and Böhme, 2010 -- valid
  Trioceros harennae (Largen, 1995) -- valid
  Trioceros harennae fitchi Necas, 2004 -- valid
  Trioceros harennae harennae (Largen, 1995) -- valid
  Trioceros hoehnelii (Steindachner, 1891) -- valid -- High-casqued Chameleon
  Trioceros incornutus (Loveridge, 1932) -- valid -- Ukinga Hornless Chameleon
  Trioceros ituriensis (K. P. Schmidt, 1919) -- valid
  Trioceros jacksonii (Boulenger, 1896) -- valid -- Jackson's Chameleon
  Trioceros jacksonii jacksonii (Boulenger, 1896) -- valid
  Trioceros jacksonii merumontanus (Rand, 1958) -- valid
  Trioceros jacksonii xantholophus (Eason, Ferguson and Hebrard, 1988) -- valid
  Trioceros johnstoni (Boulenger, 1901) -- valid -- Johnston's Chameleon
  Trioceros kinangopensis Stipala, Lutzmánn, Malonza, Wilkinson, Godley, Nyamache and Evans, 2012 -- valid
  Trioceros kinetensis (K. P. Schmidt, 1943) -- valid
  Trioceros laterispinis (Loveridge, 1932) -- valid -- Spiny-flanked Chameleon
  Trioceros marsabitensis (Tilbury, 1991) -- valid -- Tilbury's Chameleon
  Trioceros melleri (Gray, 1865) -- valid -- Meller's Chameleon
  Trioceros montium (Buchholz, 1874) -- valid -- Cameroon Sailfin Chameleon
  Trioceros narraioca (Necas, Modry and Slapeta, 2003) -- valid -- Mount Kulal Chameleon
  Trioceros ntunte (Necas, Modry and Slapeta, 2005) -- valid -- Mt Nyiru Chameleon
  Trioceros nyirit Stipala, Lutzmánn, Malonza, Borghesio, Wilkinson, Godley and Evans, 2011 -- valid
  Trioceros oweni (Gray, 1831) -- valid -- Owen's Chameleon
  Trioceros perreti (Klaver and Böhme, 1992) -- valid -- Perret's Chameleon
  Trioceros pfefferi (Tornier, 1900) -- valid -- Pfeffer's Chameleon
  Trioceros quadricornis (Tornier, 1899) -- valid -- Four-horned Chameleon
  Trioceros quadricornis eisentrauti (Mertens, 1968) -- valid -- Eisentraut's Chameleon
  Trioceros quadricornis gracilior (Böhme and Klaver, 1981) -- valid
  Trioceros quadricornis quadricornis (Tornier, 1899) -- valid
  Trioceros rudis (Boulenger, 1906) -- valid -- Ruwenzori Side-striped Chameleon, Coarse Chameleon
  Trioceros schoutedeni (Laurent, 1952) -- valid
  Trioceros schubotzi (Sternfeld, 1912) -- valid -- Mt Kenya Side-striped Chameleon
  Trioceros serratus (Mertens, 1922) -- valid
  Trioceros sternfeldi (Rand, 1963) -- valid
  Trioceros tempeli (Tornier, 1899) -- valid -- Tanzania Mountain Chameleon
  Trioceros werneri (Tornier, 1899) -- valid -- Wemer's Chameleon
  Trioceros wiedersheimi (Nieden, 1910) -- valid -- Mount Lefo Chameleon
  Trirhinopholis nuchalis Boulenger, 1893 -- invalid
  Trirhinopholis styani Boulenger, 1899 -- invalid
  Tropidechis carinatus (Krefft, 1863) -- valid -- Rough-scaled Snake, Clarence River Snake
  Tropidoclonion Cope, 1860 -- valid -- Lined Snakes
  Tropidoclonion lineatum (Hallowell, 1856) -- valid -- Lined Snake
  Tropidoclonion lineatum annectens Ramsey, 1953 -- valid
  Tropidoclonion lineatum lineatum (Hallowell, 1856) -- valid -- Northern Lined Snake
  Tropidoclonion lineatum mertensi H. M. Smith, 1965 -- valid -- Mertens' Lined Snake
  Tropidoclonion lineatum texanum Ramsey, 1953 -- valid -- Texas Lined Snake
  Tropidoclonium storerioides Cope, 1865 -- invalid
  Tropidodipsas annulifera Boulenger, 1894 -- valid -- Western Snail-eating Snake
  Tropidodipsas brevifacies Cope, 1866 -- invalid
  Tropidodipsas carri Shreve, 1951 -- invalid
  Tropidodipsas fasciata Günther, 1858 -- valid -- Banded Snail Sucker
  Tropidodipsas fasciata fasciata Günther, 1858 -- valid
  Tropidodipsas fasciata guerreroensis Taylor, 1939 -- valid -- Guerreran Snail Sucker
  Tropidodipsas fischeri Boulenger, 1894 -- valid -- Culebra-caracolera de Fisher, Fischer's Snail-eating Snake
  Tropidodipsas guerreroensis Taylor, 1939 -- invalid
  Tropidodipsas leucomelas Werner, 1916 -- invalid
  Tropidodipsas longicaudata Andersson, 1901 -- invalid
  Tropidodipsas macdougalli H. M. Smith, 1943 -- invalid
  Tropidodipsas perijanensis Aleman, 1953 -- invalid
  Tropidodipsas philippii (Jan, 1863) -- valid -- Philippi's Snail-eating Snake
  Tropidodipsas repleta G. R. Smith, Lemos-Espinal, Hartman and Chiszar, 2005 -- valid
  Tropidodipsas sartorii Cope, 1863 -- valid -- Culebra-caracolera terrestre, Terrestrial Snail Sucker
  Tropidodipsas sartorii macdougalli H. M. Smith, 1943 -- valid
  Tropidodipsas sartorii sartorii Cope, 1863 -- valid
  Tropidodipsas zweifeli Liner and Wilson, 1970 -- valid -- Zweifel's Snail-eating Snake, Culebra-caracolera de Zweifel
  Tropidodryas serra (Schlegel, 1837) -- valid -- Serra Snake
  Tropidodryas striaticeps (Cope, 1870) -- valid -- Jiboinha
  Tropidolaemus huttoni (M. A. Smith, 1949) -- valid -- Hutton's Pitviper
  Tropidolaemus laticinctus (Kuch, Gumprecht and Melaun, 2007) -- valid -- Broad-banded Temple Pitviper
  Tropidolaemus philippensis (Gray, 1842) -- valid -- South Philippine Temple Pitviper
  Tropidolaemus subannulatus (Gray, 1842) -- valid -- North Philippine Temple Pitviper
  Tropidolaemus wagleri (F. Boie, 1827) -- valid -- Wagler's Palm Viper, Wagler's Pit Viper, Temple Pitviper
  Tropidonophis Jan, 1863 -- valid
  Tropidonophis aenigmaticus Malnate and Underwood, 1988 -- valid -- East Papuan Keelback
  Tropidonophis dahlii (Werner, 1899) -- valid -- New Britain Keelback
  Tropidonophis dendrophiops (Günther, 1883) -- valid -- Spotted Water Snake
  Tropidonophis dolasii Kraus and Allison, 2004 -- valid
  Tropidonophis doriae (Boulenger, 1898) -- valid -- Barred Keelback
  Tropidonophis elongatus (Jan, 1865) -- valid -- Moluccan Keelback
  Tropidonophis halmahericus (Boettger, 1895) -- valid
  Tropidonophis hypomelas (Günther, 1877) -- valid -- Bismarck Keelback
  Tropidonophis mairii (Gray, 1841) -- valid -- Mair's Keelback, Common Keelback
  Tropidonophis mairii mairii (Gray, 1841) -- valid
  Tropidonophis mairii plumbea (Macleay, 1877) -- valid
  Tropidonophis mcdowelli Malnate and Underwood, 1988 -- valid -- Northern New Guinea Keelback
  Tropidonophis montanus (Lidth de Jeude, 1911) -- valid -- North Irian Montane Keelback
  Tropidonophis multiscutellatus (Brongersma, 1948) -- valid -- Many-scaled Keelback
  Tropidonophis negrosensis (Taylor, 1917) -- valid -- Negros Spotted Water Snake
  Tropidonophis novaeguineae (Lidth de Jeude, 1911) -- valid -- New Guinea Keelback
  Tropidonophis parkeri Malnate and Underwood, 1988 -- valid -- Highland Keelback
  Tropidonophis picturatus (Schlegel, 1837) -- valid -- Painted Keelback
  Tropidonophis punctiventris (Boettger, 1895) -- valid -- Halmahera Keelback
  Tropidonophis statisticus Malnate and Underwood, 1988 -- valid -- Papua New Guinea Montane Keelback
  Tropidonophis truncatus (Peters, 1863) -- valid
  Tropidonotus annularis Hallowell, 1857 -- invalid
  Tropidonotus anoscopus Cope, 1861 -- invalid
  Tropidonotus auriculatus Günther, 1858 -- invalid
  Tropidonotus baileyi Wall, 1907 -- invalid
  Tropidonotus baramensis M. A. Smith, 1921 -- invalid
  Tropidonotus beddomii Günther, 1864 -- invalid
  Tropidonotus bellulus Stoliczka, 1871 -- invalid
  Tropidonotus callistus Günther, 1873 -- invalid
  Tropidonotus celaeno Cope, 1861 -- invalid
  Tropidonotus chrysargoides Günther, 1858 -- invalid
  Tropidonotus chrysargos Schlegel, 1837 -- invalid
  Tropidonotus chrysargus ceylonensis Günther, 1858 -- invalid
  Tropidonotus collaris Jan, 1863 -- invalid
  Tropidonotus conspicillatus Günther, 1872 -- invalid
  Tropidonotus cyclopion A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Tropidonotus dahlii Werner, 1899 -- invalid
  Tropidonotus davidi Sauvage, 1884 -- invalid
  Tropidonotus dendrophiops Günther, 1883 -- invalid
  Tropidonotus depressiceps Werner, 1897 -- invalid
  Tropidonotus doriae Boulenger, 1898 -- invalid
  Tropidonotus flavifrons Boulenger, 1887 -- invalid
  Tropidonotus godmani Günther, 1894 -- invalid
  Tropidonotus halmahericus Boettger, 1895 -- invalid
  Tropidonotus himalayanus Günther, 1864 -- invalid
  Tropidonotus hypomelas Günther, 1877 -- invalid
  Tropidonotus inas Laidlaw, 1901 -- invalid
  Tropidonotus johannis Boulenger, 1908 -- invalid
  Tropidonotus khasiensis Boulenger, 1890 -- invalid
  Tropidonotus lineatus Peters, 1861 -- invalid
  Tropidonotus macrops Blyth, 1855 -- invalid
  Tropidonotus maculatus Edeling, 1864 -- invalid
  Tropidonotus mairii Gray, 1841 -- invalid
  Tropidonotus melanogaster Peters, 1864 -- invalid
  Tropidonotus modestus Günther, 1875 -- invalid
  Tropidonotus montanus Lidth de Jeude, 1911 -- invalid
  Tropidonotus montanus novaeguineae Lidth de Jeude, 1911 -- invalid
  Tropidonotus monticolus Jerdon, 1853 -- invalid
  Tropidonotus natrix astreptophorus Seoane, 1885 -- invalid
  Tropidonotus nicobariensis Sclater, 1891 -- invalid
  Tropidonotus nigrocinctus Blyth, 1856 -- invalid
  Tropidonotus nuchalis Boulenger, 1891 -- invalid
  Tropidonotus octolineatus Boulenger, 1904 -- invalid
  Tropidonotus ornaticeps Werner, 1924 -- invalid
  Tropidonotus parallelus Boulenger, 1890 -- invalid
  Tropidonotus pealii Sclater, 1891 -- invalid
  Tropidonotus petersii Boulenger, 1893 -- invalid
  Tropidonotus picturatus Schlegel, 1837 -- invalid
  Tropidonotus picturatus elongatus Jan, 1865 -- invalid
  Tropidonotus platyceps Blyth, 1854 -- invalid
  Tropidonotus plumbicolor Cantor, 1839 -- invalid
  Tropidonotus pryeri Boulenger, 1887 -- invalid
  Tropidonotus punctiventris Boettger, 1895 -- invalid
  Tropidonotus punctulatus Günther, 1858 -- invalid
  Tropidonotus rhodomelas H. Boie in F. Boie, 1827 -- invalid
  Tropidonotus rufodorsatus Cantor, 1842 -- invalid
  Tropidonotus sanctijohannis Boulenger, 1890 -- invalid
  Tropidonotus sarasinorum Boulenger, 1896 -- invalid
  Tropidonotus sarawacensis Günther, 1872 -- invalid
  Tropidonotus sauteri Boulenger, 1909 -- invalid
  Tropidonotus scaliger Jan, 1863 -- invalid
  Tropidonotus spilogaster F. Boie, 1827 -- invalid
  Tropidonotus subminiatus Schlegel, 1837 -- invalid
  Tropidonotus swinhonis Günther, 1868 -- invalid
  Tropidonotus tigrinus F. Boie, 1826 -- invalid
  Tropidonotus trianguligerus F. Boie, 1827 -- invalid
  Tropidonotus trivittatus Hallowell, 1853 -- invalid
  Tropidonotus tytleri Blyth, 1863 -- invalid
  Tropidonotus venningi Wall, 1910 -- invalid
  Tropidonotus vibakari H. Boie, 1826 -- invalid
  Tropidonotus xenura Wall, 1907 -- invalid
  Tropidurus arenarius (Tschudi, 1845) -- valid
  Tropidurus bogerti Roze, 1958 -- valid -- Keeled Lava Lizard
  Tropidurus callathelys Harvey and Gutberlet, 1998 -- valid
  Tropidurus catalanensis Gudynas and Skuk, 1893 -- valid
  Tropidurus chromatops Harvey and Gutberlet, 1998 -- valid
  Tropidurus cocorobensis M. T. Rodrigues, 1987 -- valid
  Tropidurus erythrocephalus M. T. Rodrigues, 1987 -- valid
  Tropidurus etheridgei Cei, 1982 -- valid -- Etheridge's Lava Lizard
  Tropidurus guarani Álvarez, Cei and Scolaro, 1994 -- valid
  Tropidurus helenae (Manzani and Abe, 1990) -- valid
  Tropidurus hispidus (Spix, 1825) -- valid -- Peters' Lava Lizard
  Tropidurus hygomi Reinhardt and Lütken, 1861 -- valid -- Reinhardt's Lava Lizard
  Tropidurus imbituba Kunz and Borges-Martins, 2013 -- valid
  Tropidurus insulanus M. T. Rodrigues, 1987 -- valid
  Tropidurus itambere M. T. Rodrigues, 1987 -- valid
  Tropidurus jaguaribanus Passos, Lima and Borges-Nojosa, 2011 -- valid
  Tropidurus lagunablanca Carvalho, 2016 -- valid
  Tropidurus melanopleurus Boulenger, 1902 -- valid -- Black Lava Lizard
  Tropidurus melanopleurus melanopleurus Boulenger, 1902 -- valid
  Tropidurus melanopleurus pictus Müller, 1924 -- valid
  Tropidurus montanus M. T. Rodrigues, 1987 -- valid
  Tropidurus mucujensis M. T. Rodrigues, 1987 -- valid
  Tropidurus oreadicus M. T. Rodrigues, 1987 -- valid
  Tropidurus pinima (M. T. Rodrigues, 1987) -- valid
  Tropidurus psammonastes M. T. Rodrigues, Kashara and Yoneaga-Yassuda, 1988 -- valid
  Tropidurus semitaeniatus (Spix, 1825) -- valid -- Striped Lava Lizard
  Tropidurus sertanejo Carvalho, Sena, Peloso, Machado, Montesinos, Silva, Campbell and Rodrigues, 2016 -- valid
  Tropidurus spinulosus (Cope, 1862) -- valid -- Spiny Lava Lizard
  Tropidurus tarara Carvalho, 2016 -- valid
  Tropidurus teyumirim Carvalho, 2016 -- valid
  Tropidurus torquatus (Wied-Neuwied, 1820) -- valid -- Amazon Lava Lizard
  Tropidurus xanthochilus Harvey and Gutberlet, 1998 -- valid
  Tympanocryptis W. C. H. Peters, 1863 -- valid
  Tympanocryptis centralis Sternfeld, 1925 -- valid -- Central Australian Earless Dragon
  Tympanocryptis cephalus Günther, 1867 -- valid -- Coastal Pebble-mimic Dragon, Blotch-tailed Earless Dragon
  Tympanocryptis condaminensis Melville, K. Smith, Hobson, Hunjan and Shoo, 2014 -- valid -- Condamine Earless Dragon
  Tympanocryptis diabolicus Doughty, Kealley, Shoo and Melville, 2015 -- valid -- Hamersley Pebble-mimic Dragon
  Tympanocryptis fortescuensis Doughty, Kealley, Shoo and Melville, 2015 -- valid
  Tympanocryptis gigas Mitchell, 1948 -- valid -- Gascoyne Pebble-mimic Dragons
  Tympanocryptis houstoni Storr, 1982 -- valid -- Houston's Earless Dragon
  Tympanocryptis intima Mitchell, 1948 -- valid -- Gibber Earless Dragon
  Tympanocryptis lineata W. C. H. Peters, 1863 -- valid -- Lined Earless Dragon
  Tympanocryptis lineata lineata W. C. H. Peters, 1863 -- valid
  Tympanocryptis lineata macra Storr, 1982 -- valid
  Tympanocryptis pentalineata Melville, K. Smith, Hobson, Hunjan and Shoo, 2014 -- valid -- Five-lined Earless Dragon
  Tympanocryptis pinguicolla Mitchell, 1948 -- valid -- Grassland Earless Dragon
  Tympanocryptis pseudopsephos Doughty, Kealley, Shoo and Melville, 2015 -- valid -- Goldfields Pebble-mimic Dragon
  Tympanocryptis tetraporophora Lucas and Frost, 1895 -- valid -- Eyrean Earless Dragon, Long-tailed Earless Dragon
  Tympanocryptis uniformis Mitchell, 1948 -- valid -- Even-scaled Earless Dragon
  Tympanocryptis wilsoni Melville, K. Smith, Hobson, Hunjan and Shoo, 2014 -- valid -- Roma Earless Dragon
  Typhlocalamus gracillima Günther, 1872 -- invalid
  Typhlogeophis ater Taylor, 1922 -- invalid
  Tyria dahlii Fitzinger, 1826 -- invalid
  Tyria najadum Eichwald, 1831 -- invalid
  Tytleria hypsirhinoides Theobald, 1868 -- invalid
  Ultrocalamus buergersi Sternfeld, 1913 -- invalid
  Ultrocalamus preussi Sternfeld, 1913 -- invalid
  Ultrocalamus preussi angusticinctus Bogert and Matalas, 1945 -- invalid
  Ulupe davisoni Blanford, 1878 -- invalid
  Uma cowlesi Heifetz, 1941 -- valid -- Yuman Desert Fringe-toed Lizard
  Uma exsul K. P. Schmidt and Bogert, 1947 -- valid -- Lagartija-arenera proscrita, Fringe-toed Sand Lizard
  Uma inornata Cope, 1895 -- valid -- Coachella Valley Fringe-toed Lizard
  Uma notata Baird, 1859 -- valid -- Colorado Desert Fringe-toed Lizard, Lagartija-arenera del Colorado
  Uma paraphygas Williams, Chrapliwy and H. M. Smith, 1959 -- valid -- Lagartija-arenera de Chihuahua, Chihuahuan Fringe-toed Lizard
  Uma rufopunctata Cope, 1895 -- invalid -- Yuman Desert Fringe-toed Lizard
  Uma scoparia Cope, 1894 -- valid -- Mojave Fringe-toed Lizard
  Unechis incredibilis Wells and Wellington, 1985 -- invalid
  Uracentron Kaup, 1826 -- valid
  Uracentron azureum (Linnaeus, 1758) -- valid -- Green Thornytail Iguana
  Uracentron azureum azureum (Linnaeus, 1758) -- valid
  Uracentron azureum guentheri Boulenger, 1894 -- valid
  Uracentron azureum werneri Mertens, 1925 -- valid
  Uracentron flaviceps (Guichenot, 1855) -- valid -- Tropical Thornytail Iguana
  Uranoscodon Kaup, 1825 -- valid
  Uranoscodon superciliosus (Linnaeus, 1758) -- valid -- Diving Lizard
  Uriechis jacksonii Günther, 1888 -- invalid
  Uriechis lineatus Peters, 1870 -- invalid
  Uriechis lunulatus Peters, 1854 -- invalid
  Uriechis microlepidotus Günther, 1860 -- invalid
  Uriechis nigriceps Peters, 1854 -- invalid
  Urobelus acanthias Reinhardt, 1860 -- invalid
  Uromacer catesbyi (Schlegel, 1837) -- valid -- Catesby's Pointed Snake
  Uromacer catesbyi catesbyi (Schlegel, 1837) -- valid
  Uromacer catesbyi cereolineatus Schwartz, 1970 -- valid
  Uromacer catesbyi frondicolor Schwartz, 1970 -- valid
  Uromacer catesbyi hariolatus Schwartz, 1970 -- valid
  Uromacer catesbyi inchausteguii Schwartz, 1970 -- valid
  Uromacer catesbyi insulaevaccarum Schwartz, 1970 -- valid
  Uromacer catesbyi pampineus Schwartz, 1970 -- valid
  Uromacer catesbyi scandax Dunn, 1920 -- valid
  Uromacer dorsalis Dunn, 1920 -- invalid
  Uromacer frenatus (Günther, 1865) -- valid -- Island Pointed Snake
  Uromacer frenatus chlorauges Schwartz, 1976 -- valid
  Uromacer frenatus dorsalis Dunn, 1920 -- valid
  Uromacer frenatus frenatus (Günther, 1865) -- valid
  Uromacer frenatus wetmorei Cochran, 1931 -- valid
  Uromacer oxyrhynchus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Pointed Snake
  Uromacer ricardinii Peracca, 1897 -- invalid
  Uromacer scandax Dunn, 1920 -- invalid
  Uromacer wetmorei Cochran, 1931 -- invalid
  Uromacerina ricardinii (Peracca, 1897) -- valid -- Sao Paulo Sharp Snake
  Uromastycinae -- valid
  Uromastyx acanthinura Bell, 1825 -- valid -- North-African Mastigure
  Uromastyx aegyptia (Forskal, 1775) -- valid -- Egyptian Mastigure, Egyptian Spiny-tailed Lizard
  Uromastyx aegyptia aegyptia (Forskal, 1775) -- valid
  Uromastyx aegyptia leptieni Wilms and Böhme, 2000 -- valid -- Leptien's Mastigure
  Uromastyx aegyptia microlepis Arnold, 1980 -- valid
  Uromastyx alfredschmidti Wilms and Böhme, 2001 -- valid -- Schmidt's Mastigure
  Uromastyx benti (J. Anderson, 1894) -- valid -- Yemeni Spiny-tailed Lizard
  Uromastyx dispar Heyden, 1827 -- valid -- Sudan Mastigure
  Uromastyx dispar dispar Heyden, 1927 -- valid
  Uromastyx dispar flavifasciata Mertens, 1962 -- valid
  Uromastyx dispar hodhensis J.-F. Trape, S. Trape and Chirio, 2012 -- valid
  Uromastyx dispar maliensis Joger and Lambert, 1996 -- valid
  Uromastyx geyri L. Müller, 1922 -- valid -- Geyr's Spiny-tailed Lizard
  Uromastyx macfadyeni Parker, 1932 -- valid -- Macfadyen's Mastigure
  Uromastyx nigriventris Rothschild and Hartert, 1912 -- valid -- Moroccan Spiny-tailed Lizard
  Uromastyx occidentalis Mateo, Geniz, Lopez-Jurado and Bons, 1999 -- valid
  Uromastyx ocellata Lichtenstein, 1823 -- valid -- Ocellated Spinytail
  Uromastyx ornata Heyden, 1827 -- valid -- Ornate Mastigure
  Uromastyx ornata ornata Heyden, 1827 -- valid
  Uromastyx ornata philbyi Parker, 1938 -- valid
  Uromastyx princeps O'Shaughnessy, 1880 -- valid -- Princely Spiny-tailed Lizard
  Uromastyx shobraki Wilms and Schmitz, 2007 -- valid
  Uromastyx thomasi Parker, 1930 -- valid -- Omani Spiny-tailed Lizard
  Uromastyx yemenensis Wilms and Schmitz, 2007 -- valid -- South Arabian Spiny-tailed Lizard
  Uropsophus triseriatus Wagler, 1830 -- invalid
  Urosaurus auriculatus (Cope, 1871) -- valid -- Lagartija-arbolera de Socorro, Socorro Island Tree Lizard
  Urosaurus bicarinatus (A. H. A. Duméril, 1856) -- valid -- Lagartija-arbolera tropical, Tropical Tree Lizard
  Urosaurus bicarinatus anonymorphus (Mittleman, 1940) -- valid
  Urosaurus bicarinatus bicarinatus (A. H. A. Duméril, 1856) -- valid
  Urosaurus bicarinatus nelsoni (K. P. Schmidt, 1921) -- valid
  Urosaurus bicarinatus spinosus Bumzahem and H. M. Smith, 1954 -- valid
  Urosaurus bicarinatus tuberculatus (K. P. Schmidt, 1921) -- valid
  Urosaurus clarionensis (Townsend, 1890) -- valid -- Lagartija-arbolera de Clarion, Clarion Island Tree Lizard
  Urosaurus gadovi (K. P. Schmidt, 1921) -- valid -- Lagartija-arbolera de Gadow, Gadow's Tree Lizard
  Urosaurus graciosus Hallowell, 1854 -- valid -- Long-tailed Brush Lizard, Lagartija-arbolera cola larga
  Urosaurus graciosus graciosus Hallowell, 1854 -- valid -- Western Brush Lizard, Western Long-tailed Brush Lizard, Western Long-tailed Lizard
  Urosaurus graciosus shannoni Lowe, 1955 -- valid -- Arizona Brush Lizard, Arizona Long-tailed Brush Lizard
  Urosaurus lahtelai Rau and Loomis, 1977 -- valid -- Lagartija-arbolera de Baja California, Baja California Brush Lizard
  Urosaurus nigricaudus (Cope, 1864) -- valid -- Baja California Brush Lizard, Lagartija-arbolera cola negra, Small-scaled Lizard
  Urosaurus ornatus (Baird in Baird and Girard, 1852) -- valid -- Tree Lizard, Ornate Tree Lizard, Lagartija-arbolera común
  Urosaurus ornatus caeruleus (H. M. Smith, 1935) -- valid
  Urosaurus ornatus chiricahuae (Mittleman, 1941) -- valid
  Urosaurus ornatus lateralis (Boulenger, 1883) -- valid
  Urosaurus ornatus levis (Stejneger, 1890) -- valid -- Canyon Tree Lizard, Smooth Tree Lizard
  Urosaurus ornatus linearis (Baird, 1859) -- valid -- Lined Tree Lizard
  Urosaurus ornatus ornatus (Baird in Baird and Girard, 1852) -- valid -- Eastern Tree Lizard, Texas Tree Lizard
  Urosaurus ornatus schmidti (Mittleman, 1940) -- valid -- Big Bend Tree Lizard
  Urosaurus ornatus schottii (K. P. Schmidt, 1921) -- valid -- Schott's Tree Lizard
  Urosaurus ornatus symmetricus (Baird, 1859) -- valid -- Colorado River Tree Lizard
  Urosaurus ornatus wrighti (K. P. Schmidt, 1921) -- valid -- Northern Tree Lizard, Northern Cliff Lizard
  Urostrophus A. M. C. Duméril and Bibron, 1837 -- valid
  Urostrophus gallardoi Etheridge and Williams, 1991 -- valid
  Urostrophus vautieri A. M. C. Duméril and Bibron, 1837 -- valid -- Brazilian Steppe Iguana
  Urotheca decipiens (Günther, 1893) -- valid -- Pale Ground Snake
  Urotheca dumerilii (Bibron, 1840) -- valid
  Urotheca dumerilli (Bibron, 1840) -- invalid
  Urotheca fulviceps (Cope, 1886) -- valid
  Urotheca guentheri (Dunn, 1938) -- valid
  Urotheca lateristriga (Berthold, 1859) -- valid
  Urotheca multilineata (Peters, 1863) -- valid
  Urotheca myersi Savage and Lahanas, 1989 -- valid
  Urotheca pachyura (Cope, 1875) -- valid
  Uta encantadae L. L. Grismer, 1994 -- valid
  Uta lowei L. L. Grismer, 1994 -- valid
  Uta nolascensis Van Denburgh and Slevin, 1921 -- valid -- Lagartija-costado manchado o de Nolasco
  Uta palmeri Stejneger, 1890 -- valid -- Lagartija-costado manchado o de San Pedro, San Pedro Side-blotched Lizard
  Uta squamata Dickerson, 1919 -- valid -- Lagartija-costado manchado de Santa Catalina
  Uta stansburiana Baird and Girard, 1852 -- valid -- Side-blotched Lizard, Common Side-blotched Lizard, Lagartija-costado manchado común
  Uta stansburiana elegans Yarrow, 1882 -- valid -- California Side-blotched Lizard, Western Side-blotched Lizard
  Uta stansburiana martinensis Van Denburgh, 1905 -- valid
  Uta stansburiana nevadensis Ruthven, 1913 -- valid -- Nevada Side-blotched Lizard
  Uta stansburiana stansburiana Baird and Girard, 1852 -- valid -- Northern Side-blotched Lizard
  Uta stansburiana stejnegeri K. P. Schmidt, 1921 -- valid -- Desert Side-blotched Lizard, Eastern Side-blotched Lizard
  Uta stansburiana taylori H. M. Smith, 1935 -- valid
  Uta stansburiana uniformis Pack and Tanner, 1970 -- valid -- Colorado Side-blotched Lizard, Plateau Side-blotched Lizard
  Uta tumidarostra L. L. Grismer, 1994 -- valid
  Vermicella annulata (Gray in Gray, 1841) -- valid -- Bandy Bandy, Eastern Bandy-bandy
  Vermicella annulata snelli Storr, 1968 -- invalid
  Vermicella bertholdi littoralis Storr, 1968 -- invalid
  Vermicella calonotus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- invalid -- Black-striped Burrowing Snake, Western Black-striped Snake
  Vermicella fasciata Stirling and Zietz, 1893 -- invalid
  Vermicella intermedia Keogh and S. A. Smith, 1996 -- valid
  Vermicella multifasciata (Longman, 1915) -- valid -- Northern Bandy Bandy
  Vermicella semifasciata incincta Storr, 1968 -- invalid
  Vermicella snelli Storr, 1968 -- valid
  Vermicella vermiformis Keogh and S. A. Smith, 1996 -- valid
  Vipera altaica Tuniyev, Nilson and Andrén, 2010 -- valid
  Vipera ammodytes (Linnaeus, 1758) -- valid -- Nose-horned Viper
  Vipera ammodytes ammodytes (Linnaeus, 1758) -- valid
  Vipera ammodytes meridionalis Boulenger, 1903 -- valid
  Vipera ammodytes montandoni Boulenger, 1904 -- valid
  Vipera anatolica Eiselt and Baran, 1970 -- valid -- Anatolian Meadow Viper
  Vipera arietans Merrem, 1820 -- invalid
  Vipera armata A. Smith, 1826 -- invalid
  Vipera aspis (Linnaeus, 1758) -- valid -- Asp Viper
  Vipera aspis aspis (Linnaeus, 1758) -- valid
  Vipera aspis atra Meisner, 1820 -- valid
  Vipera aspis francisciredi Laurenti, 1768 -- valid
  Vipera aspis hugyi Schinz, 1833 -- valid
  Vipera aspis zinnikeri Kramer, 1958 -- valid
  Vipera atra Meisner, 1820 -- invalid
  Vipera barani Böhme and Joger, 1983 -- valid -- Turkish Viper
  Vipera berus (Linnaeus, 1758) -- valid
  Vipera berus berus (Linnaeus, 1758) -- valid
  Vipera berus bosniensis Boettger, 1889 -- valid
  Vipera berus nikolskii Vedmederya, Grubant and Rudayewa, 1986 -- valid
  Vipera berus sachalinensis Zarevsky, 1917 -- valid
  Vipera berus seoanei Lataste, 1879 -- invalid
  Vipera caudalis A. Smith, 1839 -- invalid
  Vipera chlorechis Pel, 1851 -- invalid
  Vipera cornuta Daudin, 1803 -- invalid
  Vipera darevskii Vedmederya, Orlov and Tuniyev, 1986 -- valid -- Darevsky's Viper
  Vipera dinniki Nikolsky, 1913 -- valid -- Dinnik's Viper
  Vipera eriwanensis (Reuss, 1933) -- valid
  Vipera eriwanensis ebneri Knöpfler and Sochurek, 1955 -- valid
  Vipera eriwanensis eriwanensis (Reuss, 1933) -- valid
  Vipera francisciredi Laurenti, 1768 -- invalid
  Vipera heraldica Bocage, 1889 -- invalid
  Vipera hindii Boulenger, 1910 -- invalid
  Vipera hugyi Schinz, 1833 -- invalid
  Vipera kaznakovi Nikolsky, 1909 -- valid -- Caucasus Viper
  Vipera latastei Bosca, 1878 -- valid -- Lataste's Viper
  Vipera latastei gaditana Saint Girons, 1977 -- valid
  Vipera latastei latastei Bosca, 1878 -- valid
  Vipera lebetina chernovi Chikin and Szczerbak, 1992 -- invalid
  Vipera lebetina schweizeri Werner, 1935 -- invalid
  Vipera lebetina transmediterranea Nilson and Andrén, 1988 -- invalid
  Vipera lebetina turanica Chernov, 1940 -- invalid
  Vipera lotievi Nilson, Tuniyev, Orlov, Hoggren and Andrén, 1995 -- valid -- Lotiev's Viper
  Vipera macrops Méhely, 1911 -- invalid
  Vipera magnifica Tuniyev and Ostrovskikh, 2001 -- valid
  Vipera monticola Saint Girons, 1953 -- valid -- Mountain Viper
  Vipera obtusa Dwigubsky, 1832 -- invalid
  Vipera olguni (Tuniyev, Avci, Tuniyev, A. L. Agasian and L. A. Agasian, 2012) -- valid
  Vipera orlovi Tuniyev and Ostrovskikh, 2001 -- valid
  Vipera peilei Murray, 1892 -- invalid
  Vipera peringueyi Boulenger, 1888 -- invalid
  Vipera pontica Billing, Nilson and Sattler, 1990 -- valid -- Black Sea Viper
  Vipera psyches Daudin, 1803 -- invalid
  Vipera raddei kurdistanica Nilson and Andrén, 1986 -- invalid
  Vipera renardi (Christoph, 1861) -- valid -- Steppe Viper
  Vipera renardi bashkirovi Garanin, Pavlov, Bakiev, in Bakiev, Garanin, Litvinov, Pavlov and Ratnikov, 2004 -- valid
  Vipera renardi parursinii Nilson and Andrén, 2001 -- valid
  Vipera renardi puzanovi Kukuskin, 2009 -- valid
  Vipera renardi renardi (Christoph, 1861) -- valid
  Vipera renardi tienshanica Nilson and Andrén, 2001 -- valid
  Vipera rhinoceros Schlegel, 1855 -- invalid
  Vipera russelli siamensis M. A. Smith, 1917 -- invalid
  Vipera schneideri Boettger, 1886 -- invalid
  Vipera seoanei Lataste, 1879 -- valid -- Portugese Viper
  Vipera seoanei cantabrica Braña and Bas, 1983 -- valid
  Vipera seoanei seoanei Lataste, 1879 -- valid
  Vipera shemakhensis (Tuniyev, Orlov, Tuniyev and Kidov, 2013) -- valid
  Vipera superciliaris Peters, 1855 -- invalid
  Vipera transcaucasiana Boulenger, 1913 -- valid
  Vipera trigonocephala Latreille, 1801 -- invalid
  Vipera ursinii (Bonaparte, 1835) -- valid -- Meadow Viper, Orsinis Viper
  Vipera ursinii ebneri Knöpfler and Sochurek, 1955 -- invalid
  Vipera ursinii graeca Nilson and Andrén, 1988 -- valid
  Vipera ursinii macrops Méhely, 1911 -- valid
  Vipera ursinii moldavica Nilson, Andrén and Joger, 1993 -- valid
  Vipera ursinii rakosiensis Méhely, 1893 -- valid
  Vipera ursinii ursinii (Bonaparte, 1835) -- valid
  Viperidae Oppel, 1811 -- valid -- Pit Vipers, Vipers
  Virginia valeriae Baird and Girard, 1853 -- invalid -- Smooth Earth Snake, Smooth Earthsnake
  Virginia valeriae elegans Kennicott, 1859 -- invalid -- Western Earth Snake, Western Smooth Earthsnake
  Virginia valeriae pulchra (Richmond, 1954) -- invalid -- Mountain Earth Snake, Mountain Earthsnake
  Virginia valeriae valeriae Baird and Girard, 1853 -- invalid -- Eastern Earth Snake, Eastern Smooth Earthsnake
  Wallaceophis Mirza, Vyas, Patel, Maheta and Sanap, 2016 -- valid
  Wallaceophis gujaratensis Mirza, Vyas, Patel, Maheta and Sanap, 2016 -- valid -- Wallace's Racer, Wallace's Striped Snake
  Walterinnesia aegyptia Lataste, 1887 -- valid -- Desert Cobra
  Walterinnesia morgani (Mocquard, 1905) -- valid
  Xenagama Boulenger, 1895 -- valid
  Xenagama batillifera (Vaillant in Révoil, 1882) -- valid -- Dwarf Turnip Tail Agama, Vaillant's Strange Agama
  Xenagama taylori (Parker, 1935) -- valid -- Taylor's Strange Agama
  Xenagama wilmsi Wagner, Mazuch and Baur, 2013 -- valid
  Xenagama zonura (Boulenger, 1895) -- valid -- Ethiopian Ridgeback Agama
  Xenelaphis ellipsifer Boulenger, 1900 -- valid -- Ocellated Brown Snake
  Xenelaphis hexagonotus (Cantor, 1847) -- valid -- Malaysian Brown Snake
  Xenocalamus bicolor Günther, 1868 -- valid -- Slender Quill-snouted Snake
  Xenocalamus bicolor australis Fitzsimons, 1946 -- valid -- Waterberg Quill-snouted Snake
  Xenocalamus bicolor bicolor Günther, 1868 -- valid -- Bicolored Quill-snouted Snake
  Xenocalamus bicolor concavorostralis Hoffman, 1940 -- valid
  Xenocalamus bicolor lineatus Roux, 1907 -- valid -- Striped Quill-snouted Snake
  Xenocalamus bicolor machadoi Laurent, 1954 -- valid
  Xenocalamus bicolor maculatus Fitzsimons, 1937 -- valid
  Xenocalamus bicolor pernasutus (Werner, 1915) -- valid
  Xenocalamus mechowii Peters, 1881 -- valid -- Elongate Quill-snouted Snake
  Xenocalamus mechowii inornatus de Witte and Laurent, 1947 -- valid
  Xenocalamus mechowii mechowii Peters, 1881 -- valid
  Xenocalamus michelli Müller, 1911 -- valid
  Xenocalamus michellii Müller, 1911 -- invalid -- Michell's Quill-snouted Snake
  Xenocalamus sabiensis Broadley, 1971 -- valid -- Sabi Quill-snouted Snake
  Xenocalamus transvaalensis Methuen, 1919 -- valid -- Transvaal Quill-snouted Snake
  Xenochrophis Günther, 1864 -- valid
  Xenochrophis asperrimus (Boulenger, 1891) -- valid -- Boulenger's Keelback
  Xenochrophis bellula (Stoliczka, 1871) -- invalid
  Xenochrophis cerasogaster (Cantor, 1839) -- valid -- Painted Keelback
  Xenochrophis flavipunctatus (Hallowell, 1861) -- valid -- Yellow-spotted Keelback
  Xenochrophis maculatus (Edeling, 1864) -- valid -- Spotted Keelback
  Xenochrophis melanzostus (Gravenhorst, 1807) -- valid -- Javanese Keelback Water Snake
  Xenochrophis piscator (Schneider, 1799) -- valid -- Checkered Keelback, Asiatic Water Snakes
  Xenochrophis punctulatus (Günther, 1858) -- valid
  Xenochrophis sanctijohannis (Boulenger, 1890) -- valid -- St. John's Keelback
  Xenochrophis schnurrenbergeri Kramer, 1977 -- valid -- Bar-necked Keelback
  Xenochrophis trianguligerus (F. Boie, 1827) -- valid -- Triangle Keelback
  Xenochrophis tytleri (Blyth, 1863) -- valid -- Tytler's Keelback
  Xenochrophis viperinus Schenkel, 1901 -- invalid
  Xenochrophis vittatus (Linnaeus, 1758) -- valid -- Striped Keelback, Banded Keelback
  Xenodermus javanicus Reinhardt, 1836 -- valid -- Xenodermine Snake, Java Tubercle Snake, Dragon Snake
  Xenodon ancorus Girard, 1858 -- invalid
  Xenodon dorbignyi (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- South American Hognose Snake
  Xenodon dorbignyi chacoensis (de Lema, 1994) -- valid
  Xenodon dorbignyi dorbignyi (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid
  Xenodon dorbignyi orientalis (de Lema, 1994) -- valid
  Xenodon dorbignyi uruguayensis (de Lema, 1994) -- valid
  Xenodon gigas A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Xenodon guentheri Boulenger, 1894 -- valid -- Günther's False Fer-de-lance
  Xenodon histricus (Jan, 1863) -- valid -- Jan's Hognose Snake
  Xenodon inornatus F. Boie, 1827 -- invalid
  Xenodon matogrossensis (Scrocchi and Cruz, 1993) -- valid
  Xenodon merremii (Wagler, 1824) -- valid -- Wagler's Snake
  Xenodon mexicanus H. M. Smith, 1940 -- invalid
  Xenodon nattereri (Steindachner, 1867) -- valid
  Xenodon neuwiedii Günther, 1863 -- valid -- Neuwied's False Fer-de-lance
  Xenodon pulcher (Jan, 1863) -- valid
  Xenodon punctatus Peters, 1880 -- invalid
  Xenodon purpurascens Schlegel, 1837 -- invalid
  Xenodon rabdocephalus (Wied-Neuwied, 1824) -- valid -- Culebra-engañosa norteña, False Fer-de-lance
  Xenodon schotti Schlegel, 1837 -- invalid
  Xenodon semicinctus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Ringed Hognose Snake
  Xenodon severus (Linnaeus, 1758) -- valid -- Amazon False Fer-de-lance
  Xenodon venustum Jerdon, 1853 -- invalid
  Xenodon werneri Eiselt, 1963 -- valid
  Xenopholis scalaris (Wucherer, 1861) -- valid -- Wucherer's Ground Snake
  Xenopholis undulatus (Jensen, 1900) -- valid -- Jensen's Ground Snake
  Xenopholis werdingorum Jansen, Álvarez and Köhler, 2009 -- valid
  Xenurophis caesar Günther, 1863 -- invalid
  Xyelodontophis uluguruensis Broadley and Wallach, 2002 -- valid -- Dagger-tooth Vine Snake
  Xylophis captaini Gower and Winkler, 2007 -- valid -- Captain's Xylophis, Captain's Wood Snake
  Xylophis perroteti (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Perrotet's Mountain Snake
  Xylophis stenorhynchus (Günther, 1875) -- valid -- Günther's Mountain Snake
  Zamenis andreanus Werner, 1917 -- invalid
  Zamenis anomalus Peters, 1863 -- invalid
  Zamenis arenarius Boulenger, 1890 -- invalid
  Zamenis boschisi Scortecci, 1930 -- invalid
  Zamenis brachyurus Günther, 1866 -- invalid
  Zamenis dahlii collaris Müller, 1878 -- invalid
  Zamenis diadema atriceps Fischer, 1885 -- invalid
  Zamenis diadema dolichospila Werner, 1923 -- invalid
  Zamenis elegantissimus Günther, 1878 -- invalid
  Zamenis gracilis Günther, 1862 -- invalid
  Zamenis hohenackeri (Strauch, 1873) -- valid -- Transcaucasian Rat Snake
  Zamenis hohenackeri hohenackeri (Strauch, 1873) -- valid
  Zamenis hohenackeri tauricus (Werner, 1898) -- valid
  Zamenis ladacensis Anderson, 1871 -- invalid
  Zamenis ladacensis subnigra Boettger, 1893 -- invalid
  Zamenis lateralis fuliginosus Cope, 1895 -- invalid
  Zamenis lineatus (Camerano, 1891) -- valid -- Striped Aesculapian Rat Snake
  Zamenis longissimus (Laurenti, 1768) -- valid -- Aesculapian Snake
  Zamenis mexicanus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- invalid
  Zamenis persicus (Werner, 1913) -- valid -- Persian Rat Snake
  Zamenis rhodorachis Jan, 1865 -- invalid
  Zamenis rhodorhachis tessellata Werner, 1910 -- invalid
  Zamenis rogersi Anderson, 1893 -- invalid
  Zamenis scalaris (Schinz, 1822) -- valid -- Ladder Snake
  Zamenis situla (Linnaeus, 1758) -- valid -- European Ratsnake, Leopard Snake
  Zamenis smithii Boulenger, 1895 -- invalid
  Zamenis socotrae Günther, 1881 -- invalid
  Zamenis somalicus Boulenger, 1896 -- invalid
  Zamenis tchadensis Chabanaud, 1917 -- invalid
  Zamenis variabilis Boulenger, 1905 -- invalid
  Zamenis viridiflavus asiana Boettger, 1880 -- invalid
  Zaocys luzonensis Günther, 1873 -- invalid
   

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