Integrated Taxonomic Information System - Taxon Author Search Results

Expert: Peter Uetz

ITIS records citing expert
 
 Kingdom Animalia
  Ablabes olivaceus Beddome, 1863 -- invalid
  Ablabes periops Günther, 1872 -- invalid
  Ablabes periops praefrontalis Mocquard, 1890 -- invalid
  Ablepharus alaicus Elpatjevsky, 1901 -- valid -- Alai Ground Skink
  Ablepharus alaicus alaicus Elpatjevsky, 1901 -- valid
  Ablepharus alaicus kucenkoi Nikolsky, 1902 -- valid
  Ablepharus alaicus yakovlevae (Eremchenko, 1983) -- valid
  Ablepharus bivittatus (Menetries, 1832) -- valid -- Twin-striped Skink, Two-Streaked Snake-Eyed Skink
  Ablepharus budaki Göcmen, Kumlutas and Tosunoglu, 1996 -- valid
  Ablepharus budaki anatolicus Schmidtler, 1997 -- invalid
  Ablepharus chernovi Darevsky, 1953 -- valid -- Chernov's Skink
  Ablepharus chernovi chernovi Darevsky, 1953 -- valid
  Ablepharus chernovi eiselti Schmidtler, 1997 -- valid
  Ablepharus chernovi isauriensis Schmidtler, 1997 -- valid
  Ablepharus chernovi ressli Schmidtler, 1997 -- valid
  Ablepharus darvazi Eremchenko and Panfilov, 1990 -- valid
  Ablepharus deserti Strauch, 1868 -- valid -- Desert Lidless Skink
  Ablepharus grayanus (Stoliczka, 1872) -- valid -- Minor Snake-eyed Skink
  Ablepharus himalayanus (Günther, 1864) -- valid -- Himalaya Ground Skink
  Ablepharus kitaibelii (Bibron and Bory de Saint-Vincent, 1833) -- valid -- Juniper Skink, Snake-eyed Skink
  Ablepharus kitaibelii fabichi Stepanek, 1937 -- valid
  Ablepharus kitaibelii fitzingeri Mertens, 1952 -- valid
  Ablepharus kitaibelii kitaibelii (Bibron and Bory de Saint-Vincent, 1833) -- valid
  Ablepharus kitaibelii stepaneki Fuhn, 1970 -- valid
  Ablepharus ladacensis (Günther, 1864) -- valid -- Ladak Ground Skink
  Ablepharus ladacensis ladacensis (Günther, 1864) -- valid
  Ablepharus ladacensis stimsoni (Eremchenko, 1992) -- valid
  Ablepharus lindbergi Wettstein, 1960 -- valid -- Lindberg's Twin-striped Skink, Lindberg's Snake-Eyed Skink
  Ablepharus mahabharatus (Eremchenko, Shah and Panfilov, 1998) -- valid -- Mahabharat Ground Skink
  Ablepharus nepalensis (Eremchenko and Helfenberger, 1998) -- valid -- Nepal Ground Skink
  Ablepharus pannonicus (Lichtenstein, 1823) -- valid -- Asian Snake-eyed Skink
  Ablepharus rueppellii (Gray, 1839) -- valid -- Rueppel's Snake-eyed Skink
  Ablepharus rueppellii festae Peracca, 1894 -- valid
  Ablepharus rueppellii rueppellii (Gray, 1839) -- valid
  Ablepharus sikimmensis (Blyth, 1854) -- valid -- Sikkim Ground Skink, Bronzy-brown Skink
  Ablepharus tragbulensis (Alcock, 1898) -- valid -- Tragbul Ground Skink
  Abronia anzuetoi Campbell and Frost, 1993 -- valid -- Anzuetoi Arboreal Alligator Lizard
  Abronia aurita (Cope, 1868) -- valid -- Cope's Arboreal Alligator Lizard
  Abronia bogerti Tihen, 1954 -- valid -- Lagarto alicante de Bogert, Bogert's Arboreal Alligator Lizard
  Abronia campbelli Brodie and Savage, 1993 -- valid -- Campbell's Alligator Lizard
  Abronia chiszari Smith and Smith, 1981 -- valid -- Chiszar's Arboreal Alligator Lizard, Lagarto alicante de Chiszar
  Abronia deppii (Wiegmann, 1828) -- valid -- Deppe's Arboreal Alligator Lizard
  Abronia fimbriata (Cope, 1885) -- valid
  Abronia frosti Campbell, Sasa, Aceedo and Mendelson, 1998 -- valid -- Frost's Arboreal Alligator Lizard
  Abronia fuscolabialis (Tihen, 1944) -- valid -- Escorpión Arboricola del Zempoaltepec, Mount Zempoaltepec Arboreal Alligator Lizard, Lagarto alicante de Zempoaltepec
  Abronia gaiophantasma Campbell and Frost, 1993 -- valid -- Brilliant Arboreal Alligator Lizard
  Abronia graminea (Cope, 1864) -- valid -- Lagarto alicante terrestre, Sierra de Tehuacan Arboreal Alligator Lizard, Terrestrial Arboreal Alligator Lizard
  Abronia leurolepis Campbell and Frost, 1993 -- valid -- Flat-scaled Arboreal Alligator Lizard, Smoothback Arboreal Alligator Lizard
  Abronia lythrochila Smith and Alvarez del Toro, 1963 -- valid -- Lagarto alicante labios rojos, Red-lipped Arboreal Alligator Lizard
  Abronia martindelcampoi Flores-Villela and Sánchez-H., 2003 -- valid -- Martín del Campo's Arboreal Alligator Lizard
  Abronia matudai (Hartweg and Tihen, 1946) -- valid -- Lagarto alicante rayado, Matuda's Arboreal Alligator Lizard
  Abronia meledona Campbell and Brodie, 1999 -- valid
  Abronia mitchelli Campbell, 1982 -- valid -- Lagarto alicante de Mitchell, Mitchell's Arboreal Alligator Lizard
  Abronia mixteca Bogert and Porter, 1967 -- valid -- Lagarto alicante mixteco, Mixtecan Arboreal Alligator Lizard
  Abronia montecristoi Hidalgo, 1983 -- valid -- Montecristo Arboreal Alligator Lizard
  Abronia oaxacae (Günther, 1885) -- valid -- Lagarto alicante oaxaqueño, Oaxacan Arboreal Alligator Lizard
  Abronia ochoterenai (Martín del Campo, 1939) -- valid -- Lagarto alicante verde, Ochoterena's Arboreal Alligator Lizard, Northern Chiapas Arboreal Alligator Lizard
  Abronia ornelasi Campbell, 1984 -- valid -- Lagarto alicante de Cerro Baúl, Ornelas's Arboreal Alligator Lizard, Cerro Baul Alligator Lizard
  Abronia ramirezi Campbell, 1994 -- valid -- Ramirez's Alligator Lizard
  Abronia reidi Werler and Shannon, 1961 -- valid -- Lagarto alicante de Reid, Reid's Arboreal Alligator Lizard
  Abronia salvadorensis Hidalgo, 1983 -- valid -- Salvador Arboreal Alligator Lizard
  Abronia smithi Campbell and Frost, 1993 -- valid -- Smith's Arboreal Alligator Lizard
  Abronia taeniata (Wiegmann, 1828) -- valid -- Lagarto alicante de bromelia, Banded Arboreal Alligator Lizard, Bromeliad Arboreal Alligator Lizard
  Abronia vasconcelosii (Bocourt, 1872) -- valid
  Acanthodactylus aegyptius Baha El Din, 2007 -- valid
  Acanthodactylus ahmaddisii Werner, 2004 -- valid
  Acanthodactylus arabicus Boulenger, 1918 -- valid -- Arabian Fringe-fingered Lizard
  Acanthodactylus aureus Günther, 1903 -- valid -- Golden Fringe-fingered Lizard
  Acanthodactylus bedriagai Lataste, 1881 -- valid -- Bedriaga's Fringe-fingered Lizard
  Acanthodactylus beershebensis Moravec, El Din, Seligmann, Sivan and Werner, 1999 -- valid
  Acanthodactylus blanci Doumergue, 1901 -- valid -- White Fringe-fingered Lizard
  Acanthodactylus blanfordii Boulenger, 1918 -- valid -- Blanford's Fringe-fingered Lizard
  Acanthodactylus boskianus (Daudin, 1802) -- valid -- Bosk's Fringe-fingered Lizard, Bosc's Fringe-toed lizard
  Acanthodactylus boskianus asper (Audouin, 1829) -- valid
  Acanthodactylus boskianus boskianus (Daudin, 1802) -- valid
  Acanthodactylus boskianus euphraticus Boulenger, 1919 -- valid
  Acanthodactylus boskianus khattensis J.-F. Trapé and S. Trapé, 2012 -- invalid
  Acanthodactylus boskianus nigeriensis Trapé, Chirio and Geniez, 2012 -- invalid
  Acanthodactylus boueti Chabanaud, 1917 -- valid -- Chabanaud's Fringe-fingered Lizard
  Acanthodactylus busacki Salvador, 1982 -- valid
  Acanthodactylus cantoris Günther, 1864 -- valid -- Indian Fringe-fingered Lizard
  Acanthodactylus dumerilii (Milne-Edwards, 1829) -- valid -- Duméril's Fringe-fingered Lizard
  Acanthodactylus erythrurus (Schinz, 1833) -- valid -- Fringe-fingered Lizard
  Acanthodactylus erythrurus atlanticus Boulenger, 1918 -- valid
  Acanthodactylus erythrurus belli Gray, 1845 -- valid
  Acanthodactylus erythrurus erythrurus (Schinz, 1833) -- valid
  Acanthodactylus felicis Arnold, 1980 -- valid -- Cat Fringe-fingered Lizard, South Arabian Fringe-toed Lizard
  Acanthodactylus gongrorhynchatus Leviton and Anderson, 1967 -- valid -- Saudi Fringe-fingered Lizard
  Acanthodactylus grandis Boulenger, 1909 -- valid -- Giant Fringe-fingered Lizard
  Acanthodactylus guineensis (Boulenger, 1887) -- valid -- Guinea Fringe-fingered Lizard
  Acanthodactylus haasi Leviton and Anderson, 1967 -- valid -- Haas' Fringe-fingered Lizard, Haas's Fringe-toed Lizard
  Acanthodactylus hardyi Haas, 1957 -- valid -- Hardy's Fringe-fingered Lizard
  Acanthodactylus harranensis Baran, Kumlutas, Lanza, Sindaco, Avci and Crucitti, 2005 -- valid
  Acanthodactylus ilgazi Kurnaz and Sahin, 2021 -- valid
  Acanthodactylus khamirensis Heidari, Rastegar-Pouyani, Rastegar-Pouyani and Rajabizadeh, 2013 -- valid
  Acanthodactylus lineomaculatus Duméril and Bibron, 1839 -- invalid
  Acanthodactylus longipes Boulenger, 1918 -- valid -- Long Fringe-fingered Lizard
  Acanthodactylus maculatus (Gray, 1838) -- valid -- Spotted Fringe-fingered Lizard
  Acanthodactylus masirae Arnold, 1980 -- valid -- Masira Fringe-fingered Lizard
  Acanthodactylus micropholis Blanford, 1874 -- valid -- Yellowtail Fringe-fingered Lizard
  Acanthodactylus nilsoni Rastegar-Pouyani, 1998 -- valid -- Nilson's Spiny-Toed Lizard
  Acanthodactylus opheodurus Arnold, 1980 -- valid -- Snake-tailed Fringe-toed Lizard, Arnold's Fringe-fingered Lizard
  Acanthodactylus orientalis Angel, 1936 -- valid
  Acanthodactylus pardalis (Lichtenstein, 1823) -- valid -- Egyptian Fringe-fingered Lizard
  Acanthodactylus robustus Werner, 1929 -- valid -- Robust Fringe-fingered Lizard
  Acanthodactylus savignyi (Audouin, 1827) -- valid -- Savigny's Fringe-fingered Lizard
  Acanthodactylus schmidti Haas, 1957 -- valid -- Schmidt's Fringe-fingered Lizard, Schmidt's Fringe-toed Lizard
  Acanthodactylus schreiberi Boulenger, 1878 -- valid -- Schreiber's Fringe-fingered Lizard
  Acanthodactylus schreiberi ataturi Yalçinkaya and Göçmen, 2012 -- invalid
  Acanthodactylus schreiberi syriacus Boettger, 1878 -- invalid
  Acanthodactylus scutellatus (Audouin, 1827) -- valid -- Nidua Fringe-fingered Lizard
  Acanthodactylus scutellatus audouini Boulenger, 1918 -- valid
  Acanthodactylus scutellatus scutellatus (Audouin, 1827) -- valid
  Acanthodactylus senegalensis Chabanaud, 1918 -- valid
  Acanthodactylus spinicauda Doumergue, 1901 -- valid -- Doumergue's Fringe-fingered Lizard
  Acanthodactylus taghitensis Geniez and Foucart, 1995 -- valid
  Acanthodactylus tilburyi Arnold, 1986 -- valid -- Tilbury's Fringe-fingered Lizard
  Acanthodactylus tristrami (Günther, 1864) -- valid -- Lebanon Fringe-fingered Lizard
  Acanthodactylus yemenicus Salvador, 1982 -- valid -- Yemen Fringe-fingered Lizard
  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
  Acontias aurantiacus (Peters, 1854) -- valid
  Acontias aurantiacus aurantiacus (Peters, 1854) -- valid
  Acontias aurantiacus bazarutoensis (Broadley, 1990) -- valid
  Acontias aurantiacus carolinensis (Broadley, 1990) -- valid
  Acontias bicolor (Hewitt, 1929) -- valid
  Acontias breviceps Essex, 1925 -- valid -- Shortheaded Legless Skink, Shorthead Lance Skink
  Acontias cregoi (Boulenger, 1903) -- valid -- Cregoe's Legless Skink
  Acontias gariepensis (Fitzsimons, 1941) -- valid -- Mier Kalahari Legless Skink
  Acontias gracilicauda Essex, 1925 -- valid -- Thin-tailed Legless Skink, Slendertail Lance Skink
  Acontias jappi (Broadley, 1968) -- valid -- Japp's Burrowing Skink, Barotseland Blind Legless Skink
  Acontias kgalagadi Lamb, Biswas and Bauer, 2010 -- valid -- Kalahari Burrowing Skink, Kgalagadi Legless Skink
  Acontias lineatus Peters, 1879 -- valid -- Striped Dwarf Legless Skink, Lined Lance Skink
  Acontias litoralis Broadley and Greer, 1969 -- valid -- Coastal Dwarf Legless Skink
  Acontias meleagris (Linnaeus, 1758) -- valid -- Cape Legless Skink, Golden Sand Skink, Spotted Slow Skink, Thick-tailed Blindworm, Erdslang, Linnaeus' Lance Skink
  Acontias namaquensis Hewitt, 1937 -- valid -- Namaqua Legless Skink, Namaqua Lance Skink
  Acontias occidentalis Fitzsimons, 1941 -- valid -- Western Burrowing Skink, Savanna Legless Skink
  Acontias orientalis Hewitt, 1937 -- valid -- Eastern Striped Blindworm, Eastern Cape Legless Skink
  Acontias percivali Loveridge, 1935 -- valid -- Percival's Lance Skink, Teita Limbless Skink
  Acontias percivali tasmani Hewitt, 1937 -- invalid -- Tasman's Blindworrn, Tasman's Legless Skink
  Acontias plumbeus Bianconi, 1849 -- valid -- Giant Legless Skinks, Giant Lance Skink
  Acontias poecilus Bourquin and Lambiris, 1996 -- invalid
  Acontias richardi (Jacobsen, 1987) -- valid -- Richard's Legless Skink
  Acontias rieppeli Lamb, Biswas and Bauer, 2010 -- valid -- Wood-bush Legless Skink
  Acontias schmitzi Wagner, Broadley and Bauer, 2012 -- valid
  Acontias tristis Werner, 1910 -- valid -- Namaqualand Dwarf Legless Skink
  Acrantophis dumerili Jan in Jan and Sordelli, 1860 -- valid
  Acrantophis madagascariensis (A. M. C. Duméril and Bibron, 1844) -- valid
  Acratosaura mentalis (Amaral, 1933) -- valid -- Amaral's Colobosaura
  Acratosaura spinosa Rodrigues, Cassimiro, de Freitas and Santos Silva, 2009 -- valid -- Spiny Colobosaura
  Acutotyphlops banaorum Wallach, Brown, Diesmos and Gee, 2007 -- valid
  Acutotyphlops infralabialis (Waite, 1918) -- valid -- Red Blind Snake
  Acutotyphlops kunuaensis Wallach, 1995 -- valid -- Kunua Blind Snake
  Acutotyphlops solomonis (Parker, 1939) -- valid
  Acutotyphlops subocularis (Waite, 1897) -- valid -- Bismarck Sharp-nosed Blindsnake
  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 ibarrorum Campbell and Brodie, 1988 -- valid
  Adelphicos latifasciatum Lynch and H. M. Smith, 1966 -- valid -- Oaxacan Burrowing Snake
  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 veraepacis Stuart, 1941 -- valid -- Stuart's Burrowing Snake
  Adercosaurus vixadnexus Myers and Donnelly, 2001 -- valid
  Adolfus africanus (Boulenger, 1906) -- valid -- Multi-scaled Forest Lizard, Green-bellied Forest Lizard
  Adolfus alleni (Barbour, 1914) -- valid -- Alpine Meadow Lizard
  Adolfus jacksoni (Boulenger, 1899) -- valid -- Jackson's Forest Lizard
  Aeluroglena cucullata Boulenger, 1898 -- valid -- Somali Snake
  Afroablepharus africanus (Gray, 1845) -- invalid
  Afroablepharus annobonensis (Fuhn, 1972) -- invalid
  Afroablepharus duruarum (Monard, 1949) -- invalid
  Afroablepharus maculicollis (Jacobson and Broadley, 2000) -- invalid
  Afroablepharus seydeli (De Witte, 1933) -- invalid
  Afroablepharus wahlbergi (Smith, 1849) -- invalid
  Afroablepharus wahlbergii (Smith, 1849) -- invalid
  Afroablepharus wilsoni (Werner, 1914) -- invalid
  Afronatrix Rossman and Eberle, 1977 -- valid
  Afronatrix anoscopus (Cope, 1861) -- valid -- African Brown Water Snake
  Afrotyphlops angolensis (Bocage, 1866) -- valid -- Angola Blind Snake
  Afrotyphlops bibronii (A. Smith, 1846) -- valid -- Bibron's Blind Snake
  Afrotyphlops blanfordii (Boulenger, 1889) -- valid -- Blanford's Blind-snake
  Afrotyphlops congestus (A. M. C. Duméril and Bibron, 1844) -- valid -- Blotched Blind Snake
  Afrotyphlops fornasinii (Bianconi, 1847) -- valid -- Fornasini's Blind Snake
  Afrotyphlops gierrai (Mocquard, 1897) -- valid -- Usambara Spotted Worm Snake
  Afrotyphlops kaimosae (Loveridge, 1935) -- valid -- Kakamega Blind-snake
  Afrotyphlops lineolatus (Jan, 1864) -- valid -- Lineolate Blind Snake, Common Lined Worm Snake
  Afrotyphlops nanus Broadley and Wallach, 2009 -- valid -- Kenyan Dwarf Blind-snake
  Afrotyphlops nigrocandidus (Broadley and Wallach, 2000) -- valid
  Afrotyphlops punctatus (Leach, 1819) -- valid -- Spotted Blind Snake
  Afrotyphlops rondoensis (Loveridge, 1942) -- valid -- Rondo Worm Snake
  Afrotyphlops schmidti (Laurent, 1956) -- valid -- Schmidt's blind-snake
  Afrotyphlops schmidti laurenti (Wallach, 2003) -- valid
  Afrotyphlops schmidti schmidti (Laurent, 1956) -- valid
  Afrotyphlops steinhausi (Werner, 1909) -- valid -- Steinhaus' Worm Snake
  Afrotyphlops tanganicanus (Laurent, 1964) -- valid -- Liwale Blind-snake
  Afrotyphlops usambaricus (Laurent, 1964) -- valid -- Usambara Blind-snake
  Agamodon anguliceps Peters, 1882 -- valid -- Angled Worm Lizard
  Agamodon anguliceps anguliceps Peters, 1882 -- valid
  Agamodon anguliceps immaculatus Calabresi, 1927 -- valid
  Agamodon arabicus Anderson, 1901 -- valid -- Arabian Worm Lizard
  Agamodon compressus Mocquard, 1888 -- valid -- Flat Worm Lizard
  Agkistrodon bilineatus Günther, 1863 -- valid -- Cantil enjaquimado, Mexican Moccasin
  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 howardgloydi Conant, 1984 -- valid -- Gloyd's Moccasin
  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 taylori Burger and Robertson, 1951 -- valid -- Mexican Moccasin
  Ahaetulla dispar (Günther, 1864) -- valid -- Indian Bronzeback, Günther's Vine Snake
  Ahaetulla fasciolata (Fischer, 1885) -- valid -- Spotted Whipsnake, Speckle-headed Whipsnake
  Ahaetulla fronticincta (Günther, 1858) -- valid -- Günther's Whipsnake, Burmese Vine Snake
  Ahaetulla mycterizans (Linnaeus, 1758) -- valid -- Malayan Whipsnake
  Ahaetulla nasuta (Lacépède, 1789) -- valid -- Long-nosed Tree Snake, Green Vine Snake, Long-nosed Whip Snake
  Ahaetulla perroteti (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Western Ghats Bronzeback
  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
  Alexandresaurus camacan Rodrigues, Pellegrino, Dixo, Verdade, Pavan, Argolo and Sites, 2007 -- valid -- Alexandre's Lizard
  Algyroides fitzingeri (Wiegmann, 1834) -- valid -- Fitzinger's Algyroides
  Algyroides marchi Valverde, 1958 -- valid -- Spanish Keeled Lizard
  Algyroides marchi niethammeri Buchholz, 1965 -- invalid
  Algyroides moreoticus Bibron and Bory, 1833 -- valid -- Greek Keeled Lizard
  Algyroides nigropunctatus (Duméril and Bibron, 1839) -- valid -- Blue-throated Keeled Lizard
  Algyroides nigropunctatus kephallithacius Keymar, 1986 -- valid
  Algyroides nigropunctatus nigropunctatus (Duméril and Bibron, 1839) -- valid
  Alinea berengerae (Miralles, 2006) -- invalid
  Alinea lanceolata (Cope, 1863) -- valid -- Barbados Skink
  Alinea luciae (Garman, 1887) -- valid -- Saint Lucia Skink
  Alinea pergravis (Barbour, 1921) -- invalid
  Alluaudina bellyi Mocquard, 1894 -- valid
  Alluaudina mocquardi Angel, 1939 -- valid
  Alopoglossus angulatus (Linnaeus, 1758) -- valid -- Northern Teiid
  Alopoglossus atriventris Duellman, 1973 -- valid -- Keel-Bellied Shade Lizard
  Alopoglossus buckleyi (O'Shaughnessy, 1881) -- valid -- Buckley's Teiid
  Alopoglossus copii Boulenger, 1885 -- valid -- Drab Shade Lizard
  Alopoglossus festae Peracca, 1904 -- invalid
  Alopoglossus lehmanni Ayala and Harris, 1984 -- valid
  Alpinoscincus alpinus (Greer, Allison and Cogger, 2005) -- valid
  Alpinoscincus subalpinus (Greer, Allison and Cogger, 2005) -- valid
  Alsophis antiguae Parker, 1933 -- valid -- Antiguan Racer
  Alsophis antillensis (Schlegel, 1837) -- valid -- Antilles Racer, Leeward Racer
  Alsophis danforthi Cochran, 1938 -- valid
  Alsophis manselli Parker, 1933 -- valid -- Montserrat Racer
  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 sibonius Cope, 1879 -- valid -- Dominican Racer
  Amapasaurus tetradactylus Cunha, 1970 -- valid -- Four-toed Amapasaurus
  Amastridium veliferum Cope, 1861 -- valid -- Culebra cabeza cobriza, Rustyhead Snake
  Amastridium veliferum sapperi (Werner, 1903) -- 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
  Ameiva aggerecusans Koch, Venegas, Rödder, Flecks and Böhme, 2013 -- valid
  Ameiva ameiva (Linnaeus, 1758) -- valid -- Neotropical Ameiva, Amazon Racerunner, Giant Ameiva, South American Ground Lizard, Zandolie
  Ameiva atrata Garman, 1887 -- invalid
  Ameiva atrigularis Garman, 1887 -- valid -- Venezuelan Ameiva, Giant Ameiva, Amazon Racerunner
  Ameiva auberi Cocteau, 1838 -- invalid
  Ameiva auberi abducta Schwartz in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi atrothorax Schwartz in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi behringensis Lee and Schwartz, 1985 -- invalid
  Ameiva auberi bilateralis McCoy in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi cacuminis Schwartz in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi citra Schwartz in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi denticola Schwartz in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi extorris Schwartz in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi extraria Schwartz in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi felis McCoy in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi focalis McCoy in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi galbiceps Schwartz in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi garridoi Schwartz in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi gemmea Schwartz in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi granti Schwartz in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi hardyi Schwartz in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi kingi McCoy in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi llanensis Schwartz in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi marcida Schwartz in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi multilineata McCoy in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi nigriventris Gali and Garrido, 1987 -- invalid
  Ameiva auberi obsoleta McCoy in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi orlandoi Schwartz and McCoy, 1975 -- invalid
  Ameiva auberi parvinsulae Lee and Schwartz, 1985 -- invalid
  Ameiva auberi paulsoni Schwartz in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi peradusta Schwartz in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi procer Schwartz in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi pullata Schwartz in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi richmondi McCoy in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi sabulicolor Schwartz in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi sanfelipensis Garrido, 1975 -- invalid
  Ameiva auberi schwartzi Gali and Garrido, 1987 -- invalid
  Ameiva auberi secta Schwartz in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi sideroxylon Lee and Schwartz, 1985 -- invalid
  Ameiva auberi sublesta Schwartz in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi ustulata Schwartz in Schwartz and McCoy, 1970 -- invalid
  Ameiva auberi vulturnus Lee and Schwartz, 1985 -- invalid
  Ameiva auberi zugi Schwartz in Schwartz and McCoy, 1970 -- invalid
  Ameiva bifrontata Cope, 1862 -- valid -- Khaki Ameiva, Cope's Ameiva
  Ameiva bifrontata bifrontata Cope, 1862 -- valid
  Ameiva bifrontata divisa (Fischer, 1879) -- valid
  Ameiva bifrontata insulana Ruthven, 1924 -- valid
  Ameiva chrysolaema Cope, 1868 -- invalid
  Ameiva chrysolaema alacris Schwartz and Klinikowski, 1966 -- invalid
  Ameiva chrysolaema boekeri Mertens, 1938 -- invalid
  Ameiva chrysolaema defensor Schwartz and Klinikowski, 1966 -- invalid
  Ameiva chrysolaema evulsa Schwartz, 1973 -- invalid
  Ameiva chrysolaema ficta Schwartz and Klinikowski, 1966 -- invalid
  Ameiva chrysolaema jacta Schwartz and Klinikowski, 1966 -- invalid
  Ameiva chrysolaema parvoris Schwartz and Klinikowski, 1966 -- invalid
  Ameiva chrysolaema procax Schwartz and Klinikowski, 1966 -- invalid
  Ameiva chrysolaema quadrijugis Schwartz, 1968 -- invalid
  Ameiva chrysolaema richardthomasi Schwartz and Klinikowski, 1966 -- invalid
  Ameiva chrysolaema secessa Schwartz and Klinikowski, 1966 -- invalid
  Ameiva chrysolaema umbratilis Schwartz and Klinikowski, 1966 -- invalid
  Ameiva chrysolaema woodi Cochran, 1934 -- invalid
  Ameiva cineracea Barbour and Noble, 1915 -- invalid
  Ameiva concolor Ruthven, 1924 -- valid
  Ameiva corax Censky and Paulson, 1992 -- invalid
  Ameiva corvina Cope, 1861 -- invalid
  Ameiva dorsalis Gray, 1838 -- invalid
  Ameiva erythrocephala (Shaw, 1802) -- invalid
  Ameiva fuscata Garman, 1887 -- invalid
  Ameiva griswoldi Barbour, 1916 -- invalid
  Ameiva jacuba Giugliano, Nogueira, Valdujo, Collevatti and Colli, 2013 -- valid
  Ameiva lineolata Duméril and Bibron, 1839 -- invalid
  Ameiva lineolata beatensis Noble, 1923 -- invalid
  Ameiva lineolata meracula Schwartz, 1966 -- invalid
  Ameiva lineolata perplicata Schwartz, 1966 -- invalid
  Ameiva lineolata privigna Schwartz, 1966 -- invalid
  Ameiva lineolata semota Schwartz, 1966 -- invalid
  Ameiva major Duméril and Bibron, 1839 -- invalid
  Ameiva maynardi Garman, 1888 -- invalid
  Ameiva maynardi parvinaguae Barbour and Shreve, 1936 -- invalid
  Ameiva maynardi uniformis Noble and Klingel, 1932 -- invalid
  Ameiva nodam Koch, Venegas, Rödder, Flecks and Böhme, 2013 -- valid
  Ameiva pantherina Ugueto and Harvey, 2011 -- valid
  Ameiva parecis (Colli, Costa, Garda, Kopp, Mesquita, Péres, Valdujo, Vieira and Wiederhecker, 2003) -- valid
  Ameiva plei Duméril and Bibron, 1839 -- invalid
  Ameiva pluvianotata Garman, 1887 -- invalid
  Ameiva polops Cope, 1862 -- invalid -- St. Croix Ground Lizard
  Ameiva praesignis (Baird and Girard, 1852) -- valid -- Giant Ameiva, Amazon Racerunner, Dusky Giant Ameiva
  Ameiva provitaae García-Pérez, 1995 -- valid
  Ameiva taeniura Cope, 1862 -- invalid
  Ameiva taeniura aequorea Schwartz, 1967 -- invalid
  Ameiva taeniura azuae Schwartz, 1967 -- invalid
  Ameiva taeniura ignobilis Schwartz, 1967 -- invalid
  Ameiva taeniura meyerabichi Mertens, 1950 -- invalid
  Ameiva taeniura pentamerinthus Schwartz, 1968 -- invalid
  Ameiva taeniura regnatrix Schwartz, 1967 -- invalid
  Ameiva taeniura tofacea Schwartz, 1967 -- invalid
  Ameiva taeniura vafra Schwartz, 1967 -- invalid
  Ameiva taeniura varica Schwartz, 1967 -- invalid
  Ameiva taeniura vulcanalis Schwartz, 1967 -- invalid
  Ameiva wetmorei Stejneger, 1913 -- invalid -- Blue-tailed Ground Lizard
  Ameivula abaetensis (Reis Dias, Rocha and Vrcibradic, 2002) -- invalid
  Ameivula abalosi (Cabrera, 2012) -- valid
  Ameivula confusioniba (Arias, de Carvalho, Rodrigues and Zaher, 2011) -- valid
  Ameivula cyanura (Arias, de Carvalho, Rodrigues and Zaher, 2011) -- invalid
  Ameivula jalapensis (Colli, Giugliano, Mesquita and Franca, 2009) -- valid
  Ameivula littoralis (Rocha, Bamberg Araújo, Vrcibradic and Mamede da Costa, 2000) -- invalid
  Ameivula mumbuca (Colli, Caldwell, Costa, Gainsbury, Garda, Mesquita, Filho, Soares, Silva, Valdujo et al., 2003) -- valid
  Ameivula nativo (Rocha, Bergallo and Peccinini-Seale, 1997) -- valid
  Ameivula nigrigula (Arias, de Carvalho, Rodrigues and Zaher, 2011) -- valid
  Ameivula ocellifera (Spix, 1825) -- valid -- Spix's Whiptail
  Ameivula venetacaudus (Arias, de Carvalho, Rodrigues and Zaher, 2011) -- invalid
  Amnesteophis melanauchen (Jan, 1863) -- valid
  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
  Amphiglossus alluaudi (Brygoo, 1981) -- invalid
  Amphiglossus andranovahensis (Angel, 1933) -- invalid
  Amphiglossus anosyensis Raxworthy and Nussbaum, 1993 -- invalid
  Amphiglossus ardouini (Mocquard, 1897) -- invalid
  Amphiglossus astrolabi A. M. C. Duméril and Bibron, 1839 -- valid -- Diving Skink
  Amphiglossus crenni (Mocquard, 1906) -- invalid
  Amphiglossus decaryi (Angel, 1930) -- invalid
  Amphiglossus elongatus (Angel, 1933) -- invalid
  Amphiglossus frontoparietalis (Boulenger, 1889) -- invalid
  Amphiglossus gastrostictus (O'Shaughnessy, 1879) -- invalid
  Amphiglossus johannae (Günther, 1880) -- invalid
  Amphiglossus macrocercus (Günther, 1882) -- invalid
  Amphiglossus mandady Andreone and Greer, 2002 -- invalid
  Amphiglossus mandokava Raxworthy and Nussbaum, 1993 -- invalid
  Amphiglossus melanurus (Günther, 1877) -- invalid
  Amphiglossus meva Miralles, Raselimanana, Rakotomalala, Vences and Vieites, 2011 -- invalid
  Amphiglossus ornaticeps (Boulenger, 1896) -- invalid
  Amphiglossus punctatus Raxworthy and Nussbaum, 1993 -- invalid
  Amphiglossus reticulatus (Kaudern, 1922) -- valid
  Amphiglossus spilostichus Andreone and Greer, 2002 -- invalid
  Amphiglossus splendidus (Grandidier, 1872) -- invalid
  Amphiglossus stylus Andreone and Greer, 2002 -- invalid
  Amphiglossus tanysoma Andreone and Greer, 2002 -- invalid
  Amphiglossus tsaratananensis (Brygoo, 1981) -- invalid
  Amphiglossus valhallae (Boulenger, 1909) -- invalid
  Amphisbaena absaberi (Strüssman and Carvalho, 2001) -- valid
  Amphisbaena acrobeles (Ribeiro, Castro-Mello and Nogueira, 2009) -- valid
  Amphisbaena alba Linnaeus, 1758 -- valid -- Red Worm Lizard
  Amphisbaena albocingulata Boettger, 1885 -- valid
  Amphisbaena anaemariae Vanzolini, 1997 -- valid
  Amphisbaena angustifrons Cope, 1861 -- valid -- South American Worm Lizard
  Amphisbaena anomala (Barbour, 1914) -- valid -- Barbour's Worm Lizard
  Amphisbaena arda Rodrigues, 2003 -- valid
  Amphisbaena arenaria Vanzolini, 1991 -- valid
  Amphisbaena bahiana Vanzolini, 1964 -- valid
  Amphisbaena bakeri Stejneger, 1904 -- valid -- Puerto Rican Many-ringed Worm Lizard, Baker's Worm Lizard
  Amphisbaena barbouri Gans and Alexander, 1962 -- valid -- Cuban Many-ringed Worm Lizard, Cuban Many-ringed Amphisbaena
  Amphisbaena bedai (Vanzolini, 1991) -- valid
  Amphisbaena bilabialata (Stimson, 1972) -- valid
  Amphisbaena bolivica Mertens, 1929 -- valid
  Amphisbaena borelli Peracca, 1897 -- valid
  Amphisbaena brasiliana (Gray, 1865) -- valid -- Brazilian Worm Lizard
  Amphisbaena brevis Strüssmann and Mott, 2009 -- valid
  Amphisbaena caeca Cuvier, 1829 -- valid -- Puerto Rican Worm Lizard, Common Puerto Rican Worm Lizard, Blind Worm Lizard
  Amphisbaena camura Cope, 1862 -- valid -- Crooked Worm Lizard
  Amphisbaena carlgansi Thomas and Hedges, 1998 -- valid -- Cuban Pink Worm Lizard, Cuban Pink Amphisbaena
  Amphisbaena carli Pinna, Mendonça, Bocchiglieri and Fernandes, 2010 -- valid
  Amphisbaena carvalhoi Gans, 1965 -- valid -- Carvalho Worm Lizard
  Amphisbaena caudalis Cochran, 1928 -- valid -- Cayemite Long-tailed Worm Lizard, Cayemite Long-tailed Amphisbaena
  Amphisbaena cayemite Thomas, 2006 -- valid -- Cayemite Short-tailed Worm Lizard, Cayemite Short-tailed Amphisbaena
  Amphisbaena cegei Montero, Sáfadez and Álvarez, 1997 -- valid
  Amphisbaena cerradensis (Ribeiro, Vaz-Silva and Santos Jr., 2008) -- invalid
  Amphisbaena crisae Vanzolini, 1997 -- valid
  Amphisbaena cubana Gundlach and Peters, 1879 -- valid -- Cuban Brown Worm Lizard, Cuban Worm Lizard
  Amphisbaena cubana barbouri Gans and Alexander, 1962 -- invalid
  Amphisbaena cuiabana (Strüssman and Carvalho, 2001) -- valid
  Amphisbaena cunhai Hoogmoed and Avila, 1991 -- valid
  Amphisbaena darwinii Duméril and Bibron, 1839 -- valid -- Darwin's Ringed Worm Lizard
  Amphisbaena dubia L. Müller, 1924 -- valid -- Uncertain Worm Lizard
  Amphisbaena fenestrata (Cope, 1861) -- valid -- Virgin Islands Worm Lizard, Cope's Worm Lizard
  Amphisbaena frontalis Vanzolini, 1991 -- valid
  Amphisbaena fuliginosa Linnaeus, 1758 -- valid -- Speckled Worm Lizard
  Amphisbaena gonavensis Gans and Alexander, 1962 -- valid -- Gonave Worm Lizard
  Amphisbaena gonavensis hyporissor Thomas, 1965 -- invalid
  Amphisbaena gonavensis leberi Thomas, 1965 -- invalid
  Amphisbaena gracilis Strauch, 1881 -- valid -- Slender Worm Lizard
  Amphisbaena hastata Vanzolini, 1991 -- valid
  Amphisbaena heathi Schmidt, 1936 -- valid -- Heath's Worm Lizard
  Amphisbaena heterozonata Burmeister, 1861 -- invalid
  Amphisbaena hiata Montero and Céspedez, 2002 -- valid
  Amphisbaena hogei Vanzolini, 1950 -- valid -- Hoge's Worm Lizard
  Amphisbaena hyporissor Thomas, 1965 -- valid -- Barahona Worm Lizard, Barahona Amphisbaena
  Amphisbaena ibijara Rodrigues and Andrade, 2003 -- valid
  Amphisbaena ignatiana Vanzolini, 1991 -- valid
  Amphisbaena infraorbitale (Berthold, 1859) -- invalid
  Amphisbaena innocens Weinland, 1862 -- valid -- Tiburon Worm Lizard, Innocent Worm Lizard
  Amphisbaena kingii (Bell, 1833) -- valid -- King's Worm Lizard
  Amphisbaena kisteumacheri (Porto, Soares and Caramaschi, 2000) -- invalid
  Amphisbaena kraoh (Vanzolini, 1971) -- valid
  Amphisbaena leali Thomas, 2006 -- valid -- Pestel Worm Lizard, Pestel Amphisbaena
  Amphisbaena leeseri Gans, 1964 -- valid -- Urucum Worm Lizard
  Amphisbaena leucocephala Peters, 1878 -- valid -- Whitheaded Worm Lizard
  Amphisbaena lumbricalis Vanzolini, 1996 -- valid
  Amphisbaena manni Barbour, 1914 -- valid -- Hispaniolan Dwarf Worm Lizard, Mann's Worm Lizard
  Amphisbaena maranhensis Gomes and Maciel, 2012 -- valid
  Amphisbaena medemi Gans and Mathers, 1977 -- valid
  Amphisbaena mensae Castro, 2000 -- invalid
  Amphisbaena mertensii Strauch, 1881 -- valid -- Mertens' Worm Lizard
  Amphisbaena microcephalum (Wagler, 1824) -- invalid
  Amphisbaena miringoera Vanzolini, 1971 -- valid
  Amphisbaena mitchelli Procter, 1923 -- valid -- Mitchell's Worm Lizard
  Amphisbaena munoai Klappenbach, 1960 -- valid -- Munoa Worm Lizard
  Amphisbaena myersi Hoogmoed, 1989 -- valid
  Amphisbaena neglecta Dunn and Piatt, 1936 -- valid -- Neglected Worm Lizard
  Amphisbaena nigricauda Gans, 1966 -- valid -- Black-headed Worm Lizard
  Amphisbaena occidentalis Cope, 1876 -- valid -- Western Worm Lizard
  Amphisbaena octostegum (Duméril, 1851) -- invalid
  Amphisbaena pericensis Noble, 1921 -- valid -- Perico Worm Lizard
  Amphisbaena plumbea Gray, 1872 -- valid -- Lead Worm Lizard
  Amphisbaena polygrammica Werner, 1900 -- valid -- Werner's Worm Lizard
  Amphisbaena polystegum (Duméril, 1851) -- invalid
  Amphisbaena pretrei Duméril and Bibron, 1839 -- valid -- Rio Grande Worm Lizard
  Amphisbaena prunicolor (Cope, 1885) -- valid -- Plum-colored Worm Lizard
  Amphisbaena ridleyi Boulenger, 1890 -- valid -- Ridley's Worm Lizard
  Amphisbaena roberti Gans, 1964 -- valid
  Amphisbaena rozei Lancini, 1963 -- valid -- Roze's Worm Lizard
  Amphisbaena sanctaeritae Vanzolini, 1994 -- valid
  Amphisbaena saxosa (Castro-Mello, 2003) -- valid
  Amphisbaena schmidti Gans, 1964 -- valid -- Schmidt's Worm Lizard, Puerto Rican Dusky Worm Lizard
  Amphisbaena scutigera Hemprich, 1820 -- invalid
  Amphisbaena silvestrii Boulenger, 1902 -- valid -- Silvestri's Worm Lizard
  Amphisbaena slateri Boulenger, 1907 -- valid -- Slater's Worm Lizard
  Amphisbaena slevini Schmidt, 1936 -- valid -- Slevin's Worm Lizard
  Amphisbaena spurrelli Boulenger, 1915 -- valid -- Spurrell's Worm Lizard
  Amphisbaena steindachneri Strauch, 1881 -- valid
  Amphisbaena stejnegeri Ruthven, 1922 -- valid -- Stejneger's Worm Lizard
  Amphisbaena supernumeraria Mott, Rodrigues and Dos Santos, 2009 -- valid
  Amphisbaena talisiae Vanzolini, 1995 -- valid
  Amphisbaena townsendi Stejneger, 1911 -- valid
  Amphisbaena trachura Cope, 1885 -- invalid
  Amphisbaena tragorrhectes Vanzolini, 1971 -- valid
  Amphisbaena uroxena Mott, Rodrigues, de Freitas and Silva, 2008 -- valid
  Amphisbaena vanzolinii Gans, 1963 -- valid -- Vanzolini's Worm Lizard
  Amphisbaena varia Laurenti, 1768 -- invalid
  Amphisbaena vermicularis Wagler, 1824 -- valid -- Wagler's Worm Lizard
  Amphisbaena wuchereri (Peters, 1879) -- invalid
  Amphisbaena xera Thomas, 1966 -- valid -- North American Worm Lizard, Puerto Rican Dryland Worm Lizard, Puerto Rican Xeric Worm Lizard, Dry Worm Lizard
  Amphisbaenidae Gray, 1865 -- valid -- Tropical Worm Lizards, Amphisbaenids
  Amplorhinus multimaculatus A. Smith, 1847 -- valid -- Many-spotted Snake, Cape Reed Snake
  Anadia altaserrania Harris and Ayala, 1987 -- valid
  Anadia antioquensis Arredondo, 2013 -- valid
  Anadia bitaeniata Boulenger, 1903 -- valid -- Two-banded Anadia
  Anadia blakei Schmidt, 1932 -- valid -- Blake's Anadia
  Anadia bogotensis (Peters, 1863) -- valid -- Bogota Anadia
  Anadia brevifrontalis (Boulenger, 1903) -- valid -- Shorthead Anadia
  Anadia bumanguesa Rueda-Almonacid and Caicedo, 2004 -- valid
  Anadia escalerae Myers, Rivas and Jadin, 2009 -- valid
  Anadia hobarti La-Marca and García-Pérez, 1990 -- valid -- Hobart's Anadia
  Anadia marmorata (Gray, 1846) -- valid -- Spotted Anadia
  Anadia mcdiarmidi Kok and Rivas, 2011 -- invalid
  Anadia ocellata Gray, 1845 -- valid -- Ocellated Anadia
  Anadia pamplonensis Dunn, 1944 -- valid -- Pamplona Anadia
  Anadia pariaensis Rivas, la Marca and Oliveros, 1999 -- valid
  Anadia petersi Oftedal, 1974 -- valid -- Peters' Anadia
  Anadia pulchella Ruthven, 1926 -- valid -- Ruthven's Anadia
  Anadia rhombifera (Günther, 1859) -- valid -- Rhombifer Anadia
  Anadia steyeri Nieden, 1914 -- valid -- Steyer's Anadia
  Anadia vittata Boulenger, 1913 -- valid -- Boulenger's Anadia
  Anatololacerta anatolica (Werner, 1900) -- valid
  Anatololacerta anatolica aegaea (Eiselt and Schmidtler, 1987) -- invalid
  Anatololacerta danfordi (Günther, 1876) -- valid -- Danford's Lizard
  Anatololacerta danfordi bileki (Eiselt and Schmidtler, 1987) -- invalid
  Anatololacerta finikensis (Eiselt and Schmidtler, 1987) -- valid
  Anatololacerta ibrahimi (Eiselt and Schmidtler, 1987) -- valid
  Anatololacerta oertzeni (Werner, 1904) -- invalid
  Anatololacerta oertzeni finikensis (Eiselt and Schmidtler, 1987) -- invalid
  Anatololacerta oertzeni ibrahimi (Eiselt and Schmidtler, 1987) -- invalid
  Anatololacerta oertzeni pelasgiana (Mertens, 1959) -- invalid
  Ancylocranium barkeri Loveridge, 1946 -- valid -- Lindi Sharp-snouted Worm Lizard
  Ancylocranium barkeri barkeri Loveridge, 1946 -- valid
  Ancylocranium barkeri newalae Loveridge, 1962 -- valid
  Ancylocranium ionidesi Loveridge, 1955 -- valid -- Kilwa Sharp-snouted Worm Lizard
  Ancylocranium ionidesi haasi Gans and Kochva, 1966 -- valid
  Ancylocranium ionidesi ionidesi Loveridge, 1955 -- valid
  Ancylocranium somalicum (Scortecci, 1930) -- valid -- Somali Sharp-snouted Worm Lizard
  Ancylocranium somalicum parkeri Gans and Kochva, 1966 -- valid
  Ancylocranium somalicum somalicum (Scortecci, 1930) -- valid
  Androngo trivittatus (Boulenger, 1896) -- invalid
  Androngo trivittatus trilineatus (Angel, 1942) -- invalid
  Anepischetosia maccoyi (Lucas and Frost, 1894) -- valid -- Highlands Forest-skink
  Anguidae -- valid -- Alligator Lizards, Anguid Lizards, Anguids, Galliwasps, Glass Lizards
  Anguis cephallonica Werner, 1894 -- valid -- Peloponnese Slow Worm
  Anguis colchica (Nordmann, 1840) -- valid -- Slow Worm
  Anguis fragilis Linnaeus, 1758 -- valid -- Slow Worm
  Anguis graeca Bedriaga, 1881 -- valid -- Greek Slow Worm
  Anguis incomptus (McConkey, 1955) -- invalid
  Anguis veronensis Pollini, 1818 -- valid -- Italian Slow Worm
  Anniella alexanderae Papenfuss and Parham, 2013 -- valid -- Temblor Legless Lizard
  Anniella campi Papenfuss and Parham, 2013 -- valid -- Southern Sierra Legless Lizard, Big Spring Legless Lizard
  Anniella geronimensis Shaw, 1940 -- valid -- Lagartija sin patas de Isla Jerónimo, Baja California Legless Lizard
  Anniella grinnelli Papenfuss and Parham, 2013 -- valid -- Bakersfield Legless Lizard
  Anniella pulchra Gray, 1852 -- valid -- Lagartija sin patas californiana, California Legless Lizard, Silvery Legless Lizard, Northern Legless Lizard
  Anniella stebbinsi Papenfuss and Parham, 2013 -- valid -- Southern California Legless Lizard, San Diegan Legless Lizard
  Anniellidae -- invalid -- North American Legless Lizards, Legless Lizards
  Anomalopus brevicollis Greer and Cogger, 1985 -- invalid -- Short-necked Worm-skink
  Anomalopus gowi Greer and Cogger, 1985 -- invalid -- Speckled Worm-skink
  Anomalopus leuckartii (Weinland, 1862) -- valid -- Two-clawed Worm-skink
  Anomalopus mackayi Greer and Cogger, 1985 -- valid -- Five-clawed Worm-skink
  Anomalopus pluto Ingram, 1977 -- invalid -- Cape York Worm-skink
  Anomalopus swansoni Greer and Cogger, 1985 -- valid -- Punctate Worm-skink
  Anomalopus verreauxii A. H. A. Duméril in A. M. C. Duméril and A. H. A. Duméril, 1851 -- valid -- Three-clawed Worm-skink, Verreaux's Skink
  Anomochilidae Cundall, Wallach and Rossman, 1993 -- valid -- Dwarf Pipe Snakes
  Anomochilus Berg, 1901 -- valid -- Dwarf Pipesnakes
  Anomochilus leonardi M. A. Smith, 1940 -- valid -- Leonard's Pipe Snake, Leonard's Burrowing Snake
  Anomochilus monticola Das, Lakim, Lim and Hui, 2008 -- valid
  Anomochilus weberi (Lidth de Jeude, 1890) -- valid -- Weber's Cylinder Snake
  Anoplohydrus Werner, 1909 -- valid
  Anoplohydrus aemulans Werner, 1909 -- valid
  Anotosaura collaris Amaral, 1933 -- valid -- Collared Anotosaura
  Anotosaura vanzolinia Dixon, 1974 -- valid -- Vanzolini's Anotosaura
  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 turneri Loveridge, 1935 -- valid -- Malindi Centipede-eater
  Aparallactus werneri Boulenger, 1895 -- valid -- Usambara Centipede-eater
  Apathya cappadocica (Werner, 1902) -- valid -- Anatolian Lizard
  Apathya cappadocica cappadocica (Werner, 1902) -- valid
  Apathya cappadocica muhtari (Eiselt, 1979) -- valid
  Apathya cappadocica schmidtlerorum (Eiselt, 1979) -- invalid
  Apathya cappadocica urmiana Lantz and Suchow, 1934 -- valid
  Apathya cappadocica wolteri Bird, 1936 -- valid
  Apathya yassujica (Nilson, Rastegar-Pouyani, Rastegar-Pouyani and Andrén, 2003) -- valid -- Yassujian Lizard
  Aplopeltura boa (H. Boie, 1828) -- valid -- Blunt-headed Slug Eating Snake, Blunthead Slug Snake
  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 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 coronata (Sauvage, 1877) -- invalid
  Apostolepis dimidiata (Jan, 1862) -- valid
  Apostolepis dorbignyi (Schlegel, 1837) -- valid -- Bolivian Burrowing Snake
  Apostolepis flavotorquata (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Central Burrowing Snake
  Apostolepis gaboi Rodrigues, 1993 -- valid
  Apostolepis goiasensis Prado, 1942 -- valid -- Goias Burrowing Snake
  Apostolepis intermedia Koslowsky, 1898 -- valid -- Mato Grosso Burrowing Snake
  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 vittata (Cope, 1887) -- valid
  Aprosdoketophis andreonei Wallach, Lanza and Nistri, 2010 -- valid
  Archaeolacerta bedriagae (Camerano, 1885) -- valid -- Bedriaga's Rock Lizard
  Archaeolacerta bedriagae bedriagae (Camerano, 1885) -- valid
  Archaeolacerta bedriagae paessleri (Mertens, 1927) -- valid
  Archaeolacerta bedriagae sardoa (Peracca, 1903) -- 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
  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 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
  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
  Arthrosaura guianensis MacCulloch and Lathrop, 2001 -- invalid
  Arthrosaura hoogmoedi Kok, 2008 -- invalid
  Arthrosaura kockii (Lidth de Jeude, 1904) -- valid
  Arthrosaura montigena Myers and Donnelly, 2008 -- valid
  Arthrosaura reticulata (O'Shaughnessy, 1881) -- valid -- Yellowbelly Arthrosaura
  Arthrosaura synaptolepis Donnelly, McDiarmid and Myers, 1992 -- valid -- Donnelly's Arthrosaura
  Arthrosaura testigensis Gorzula and Senaris, 1999 -- valid
  Arthrosaura tyleri (Burt and Burt, 1931) -- valid
  Arthrosaura versteegii Lidth de Jeude, 1904 -- valid
  Aspidoscelis angusticeps (Cope, 1878) -- valid -- Yucatán Whiptail, Huico yucateco, Cuiji Yucateco
  Aspidoscelis angusticeps angusticeps (Cope, 1878) -- valid -- Narrowheaded Yucatán Whiptail
  Aspidoscelis angusticeps petenensis (Beargie and McCoy, 1964) -- valid -- Corredora del Peten, Peten Whiptail
  Aspidoscelis burti (Taylor, 1938) -- valid -- Canyon Spotted Whiptail, Huico Manchado de Cañon
  Aspidoscelis calidipes (Duellman, 1955) -- valid -- Tepalcatepec Valley Whiptail, Huico de Tepalcatepec, Río Tepalcatepec Valley Whiptail, Ticuiliches
  Aspidoscelis ceralbensis (Van Denburgh and Slevin, 1921) -- valid -- Cerralvo Island Whiptail, Huico de Cerralbo
  Aspidoscelis communis (Cope, 1878) -- valid -- Colima Giant Whiptail, Huico moteado-gigante, Moteado, Giant Whiptail
  Aspidoscelis communis communis (Cope, 1878) -- valid -- Cuiji de Cola Roja, Colima Giant Whiptail
  Aspidoscelis communis mariarum (Günther, 1885) -- valid -- Cuiji de Islas Marias, Islas Tres Marias Whiptail
  Aspidoscelis costatus (Cope, 1878) -- valid -- Western Mexico Whiptail, Huico del oeste-mexicano, Huico Llanero
  Aspidoscelis costatus barrancorum (Zweifel, 1959) -- valid -- Cuiji de Barranca, Barranca Whiptail
  Aspidoscelis costatus costatus (Cope, 1878) -- valid -- Balsas Basin Whiptail, Huico Correlón
  Aspidoscelis costatus griseocephalus (Zweifel, 1959) -- valid -- Huico de Garganta-azul, Blue-throated Whiptail
  Aspidoscelis costatus huico (Zweifel, 1959) -- valid -- Huico Pecho-azul, Blue-chested Whiptail
  Aspidoscelis costatus mazatlanensis (Zweifel, 1959) -- valid -- Huico de Sinaloa, Sinaloan Whiptail
  Aspidoscelis costatus nigrigularis (Zweifel, 1959) -- valid -- Huico de Garganta-negra, Black-throated Whiptail
  Aspidoscelis costatus occidentalis (Gadow, 1906) -- valid -- Huico de México Occidental, Western México Whiptail
  Aspidoscelis costatus zweifeli (Duellman, 1960) -- valid -- Zweifel's Whiptail
  Aspidoscelis cozumela (Gadow, 1906) -- valid -- Cozumel Racerunner, Huico de Cozumel, Cuiji de Cozumel, Cozumel Whiptail
  Aspidoscelis danheimae (Burt, 1929) -- valid -- Isla San José Whiptail, Huico de la Isla San José
  Aspidoscelis deppii (Wiegmann, 1834) -- valid -- Blackbelly Racerunner, Huico siete líneas, Black-bellied Racerunner, Cuiji Panzanegra
  Aspidoscelis deppii deppii (Wiegmann, 1834) -- valid -- Lagartija Verdiazul, Black-bellied Racerunner
  Aspidoscelis deppii infernalis (Duellman and Wellman, 1969) -- valid -- Lagartija Infernal, Deppe's Inferno Racerunner
  Aspidoscelis deppii schizophorus (H. Smith and Brandon, 1968) -- valid -- Huico Llanero, Deppe's Split Racerunner
  Aspidoscelis exsanguis (Lowe, 1956) -- valid -- Chihuahuan Spotted Whiptail
  Aspidoscelis flagellicauda (Lowe and Wright, 1964) -- invalid -- Gila Spotted Whiptail
  Aspidoscelis gularis (Baird and Girard, 1852) -- valid -- Eastern Spotted Whiptail, Common Spotted Whiptail, Texas Spotted Whiptail, Huico texano
  Aspidoscelis gularis colossus (Dixon, Lieb and Ketchersid, 1971) -- valid -- Corredora Colosal, Colossal Spotted Whiptail
  Aspidoscelis gularis gularis (Baird and Girard, 1852) -- valid -- Texas Spotted Whiptail, Corredora Pinta Texana
  Aspidoscelis gularis pallidus (Duellmanb and Zweifel, 1962) -- valid -- Huico Pálido, Pallid Spotted Whiptail
  Aspidoscelis gularis semiannulatus (Walker, 1967) -- valid -- Corredora Pinta Zacatecana, Zacatecan Spotted Whiptail
  Aspidoscelis gularis semifasciatus (Cope, 1892) -- valid
  Aspidoscelis gularis septemvittata (Cope, 1892) -- valid -- Mexican Plateau Spotted Whiptail, Big Bend Spotted Whiptail, Corredora del Big Bend
  Aspidoscelis guttatus (Wiegmann, 1834) -- valid -- Mexican Racerunner, Huico picuiliche
  Aspidoscelis guttatus flavilineatus (Duellman and Wellman, 1960) -- valid
  Aspidoscelis guttatus guttatus (Wiegmann, 1834) -- valid
  Aspidoscelis guttatus immutabilis (Cope, 1878) -- valid
  Aspidoscelis hyperythrus (Cope, 1863) -- valid -- Orange-throated Whiptail
  Aspidoscelis hyperythrus beldingi (Stejneger, 1894) -- valid -- Belding's Orange-throated Whiptail
  Aspidoscelis hyperythrus hyperythrus (Cope, 1863) -- valid -- Cape Orange-throated Whiptail
  Aspidoscelis hyperythrus schmidti (Van Denburgh and Slevin, 1921) -- valid
  Aspidoscelis inornatus (Baird, 1859) -- valid -- Little Striped Whiptail
  Aspidoscelis inornatus arizonae (Van Denburgh, 1896) -- valid -- Arizona Striped Whiptail
  Aspidoscelis inornatus chihuahuae (Wright and Lowe, 1993) -- valid
  Aspidoscelis inornatus cienegae (Wright and Lowe, 1993) -- valid
  Aspidoscelis inornatus heptagrammus (Axtell, 1961) -- valid -- Trans-Pecos Striped Whiptail, Northern Striped Whiptail
  Aspidoscelis inornatus inornatus (Baird, 1859) -- valid -- Little Striped Whiptail
  Aspidoscelis inornatus juniperus (Wright and Lowe, 1993) -- valid -- Woodland Striped Whiptail
  Aspidoscelis inornatus llanuras (Wright and Lowe, 1993) -- valid -- Plains Striped Whiptail
  Aspidoscelis inornatus octolineatus (Baird, 1859) -- valid
  Aspidoscelis inornatus paululus (Williams, 1890) -- valid
  Aspidoscelis labialis (Stejneger, 1890) -- valid -- Baja California Whiptail, Huico de Baja California
  Aspidoscelis laredoensis (McKinney, Kay and Anderson, 1973) -- valid -- Laredo Striped Whiptail, Llanera de Laredo
  Aspidoscelis lineattissimus (Cope, 1878) -- valid -- Many-lined Whiptail, Huico muchas líneas, Cuiji de Muchas Lineas
  Aspidoscelis lineattissimus duodecemlineatus (Lewis, 1956) -- valid -- Cuiji de Cola Azul, Twelve-lined Whiptail
  Aspidoscelis lineattissimus exoristus (Duellman and Wellman, 1960) -- valid -- Cuiji Michoacano, Michoacan Many-lined Whiptail
  Aspidoscelis lineattissimus lineattissimus (Cope, 1878) -- valid -- Cuiji Lineado, Many-lined Whiptail
  Aspidoscelis lineattissimus lividis (Duellman and Wellman, 1960) -- valid -- Cuiji Azulado, Blue Many-lined Whiptail
  Aspidoscelis marmoratus (Baird and Girard, 1852) -- valid -- Marbled Whiptail, Huico Marmóreo, Western Marbled Whiptail
  Aspidoscelis marmoratus marmoratus (Baird and Girard, 1852) -- valid -- Western Marbled Whiptail
  Aspidoscelis marmoratus reticuloriens (Vance, 1978) -- valid -- Eastern Marbled Whiptail
  Aspidoscelis maslini (Fritts, 1969) -- valid -- Maslin's Whiptail, Huico de Maslin
  Aspidoscelis maximus (Cope, 1863) -- valid -- Cape Region Whiptail, Huico del Cabo, Huico de Region del Cabo
  Aspidoscelis mexicanus (Peters, 1869) -- valid -- Mexican Whiptail, Huico mexicano, Cuiji Mexicano
  Aspidoscelis motaguae (Sackett, 1941) -- valid -- Giant Whiptail, Cuiji Gigante
  Aspidoscelis neomexicanus (Lowe and Zweifel, 1952) -- valid -- New Mexico Whiptail, Huico de Nuevo México
  Aspidoscelis neotesselatus (Walker, Cordes and Taylor, 1997) -- valid -- Colorado Checkered Whiptail, Triploid Checkered Whiptail
  Aspidoscelis opatae (Wright, 1967) -- valid -- Opata Whiptail, Huico opata
  Aspidoscelis pai (Wright and Lowe, 1993) -- valid -- Pai Striped Whiptail
  Aspidoscelis parvisocius (Zweifel, 1960) -- valid -- Mexican Pigmy Whiptail, Huico pigmeo
  Aspidoscelis pictus (Van Denburgh and Slevin, 1921) -- valid -- Isla Monserrate Whiptail, Huico de la Isla Monserrate
  Aspidoscelis rodecki (McCoy and Maslin, 1962) -- valid -- Rodeck's Whiptail, Huico de Rodeck, Cuiji de Rodeck
  Aspidoscelis sackii (Wiegmann, 1834) -- valid -- Sack's Spotted Whiptail, Campeche
  Aspidoscelis sackii australis (Gadow, 1906) -- invalid
  Aspidoscelis sackii bocourti (Boulenger, 1885) -- valid
  Aspidoscelis sackii gigas (Davis and H. Smith, 1952) -- valid -- Giant Spotted Whiptail, Cuiji Moteado Gigante
  Aspidoscelis sackii sackii (Wiegmann, 1834) -- valid -- Cuiji Pinto, Sack's Spotted Whiptail
  Aspidoscelis scalaris (Cope, 1892) -- valid -- Rusty-rumped Whiptail, Plateau Spotted Whiptail, Correadora Pinta Occidental
  Aspidoscelis sexlineatus (Linnaeus, 1766) -- valid -- Six-lined Racerunner, Huico de Seis Líneas
  Aspidoscelis sexlineatus sexlineatus (Linnaeus, 1766) -- valid -- Eastern Six-lined Racerunner
  Aspidoscelis sexlineatus stephensae (Trauth, 1992) -- valid -- Texas Yellow-headed Racerunner
  Aspidoscelis sexlineatus viridis (Lowe, 1966) -- valid -- Prairie Racerunner
  Aspidoscelis sonorae (Lowe and Wright, 1964) -- valid -- Sonoran Spotted Whiptail, Gila Spotted Whiptail, Huico Manchado de Sonora
  Aspidoscelis stictogrammus (Burger, 1950) -- valid -- Giant Spotted Whiptail, Huico Manchado Gigante
  Aspidoscelis tesselatus (Say in James, 1823) -- valid -- Common Checkered Whiptail, Gray Checkered Whiptail, Huico Teselado
  Aspidoscelis tigris (Baird and Girard, 1852) -- valid -- Western Whiptail, Tiger Whiptail, Huico Tigre
  Aspidoscelis tigris aethiops (Cope, 1900) -- valid -- Huico Tigre de Sonorense, Sonoran Tiger Whiptail
  Aspidoscelis tigris dickersonae (Van Denburgh and Slevin, 1921) -- valid
  Aspidoscelis tigris disparilis (Dickerson, 1919) -- valid -- Huico de Isla Angel de la Guarda, Isla Angel de la Guarda Tiger Whiptail
  Aspidoscelis tigris multiscutatus (Cope, 1892) -- valid -- Coastal Whiptail, Huico Costeño
  Aspidoscelis tigris mundus (Camp, 1916) -- valid -- California Whiptail
  Aspidoscelis tigris nigroriens (Hendricks and Dixon, 1986) -- valid -- Huico de Garganta Negra del Oriente, Eastern Black-throated Whiptail
  Aspidoscelis tigris pulcher (Williams, H. Smith and Chrapliwy, 1960) -- valid -- Huico Hermoso, Beautiful Marbled Whiptail
  Aspidoscelis tigris punctatus (Walker and Maslin, 1964) -- valid -- Llanera de Cola de Látigo, Spotted Tiger Whiptail
  Aspidoscelis tigris punctilinealis (Dickerson, 1919) -- valid -- Sonoran Tiger Whiptail, Huico Tigre de Sonora
  Aspidoscelis tigris rubidus (Cope, 1892) -- valid -- Huico de Cola Rosada, Pink-tailed Whiptail
  Aspidoscelis tigris septentrionalis (Burger, 1950) -- valid -- Plateau Tiger Whiptail, Northern Whiptail
  Aspidoscelis tigris stejnegeri (Van Denburgh, 1894) -- valid -- Coastal Whiptail, San Diegan Tiger Whiptail, Huico de Stejneger
  Aspidoscelis tigris tigris (Baird and Girard, 1852) -- valid -- Great Basin Whiptail, Huico de la Gran Cuenca
  Aspidoscelis tigris vandenburghi (Dickerson, 1919) -- valid -- Huico de la Isla Carmen, Carmen Island Whiptail
  Aspidoscelis tigris variolosus (Cope, 1892) -- valid -- Huico Occidental Manchado, Spotted Western Whiptail
  Aspidoscelis tigris vividus (Walker, 1981) -- valid -- Huico de la Isla Coronado, South Coronado Island Whiptail
  Aspidoscelis uniparens (Wright and Lowe, 1965) -- valid -- Desert Grassland Whiptail
  Aspidoscelis velox (Springer, 1928) -- valid -- Plateau Striped Whiptail
  Aspidoscelis xanthonotus (Duellman and Lowe, 1953) -- valid -- Red-backed Whiptail, Huico de Dorsorojo
  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
  Aspronema cochabambae (Dunn, 1935) -- valid
  Aspronema dorsivittatum (Cope, 1862) -- valid -- Paraguay Mabuya
  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
  Asymblepharus Eremchenko and Szczerbak, 1980 -- invalid
  Asymblepharus alaicus (Elpatjevsky, 1901) -- invalid
  Asymblepharus alaicus alaicus (Elpatjevsky, 1901) -- invalid
  Asymblepharus alaicus kucenkoi (Nikolsky, 1902) -- invalid
  Asymblepharus alaicus yakovlevae Eremchenko, 1983 -- invalid
  Asymblepharus eremchenkoi Panfilov, 1999 -- invalid
  Asymblepharus himalayanus (Günther, 1864) -- invalid -- Himalaya Ground Skink
  Asymblepharus ladacensis (Günther, 1864) -- invalid -- Ladak Ground Skink
  Asymblepharus ladacensis ladacensis (Günther, 1864) -- invalid
  Asymblepharus ladacensis stimsoni Eremchenko, 1992 -- invalid
  Asymblepharus mahabharatus Eremchenko, Shah and Panfilov, 1998 -- invalid -- Mahabharat Ground Skink
  Asymblepharus medogensis Jiang, Wu, Guo, Li and Che, 2020 -- invalid
  Asymblepharus nepalensis Eremchenko and Helfenberger, 1998 -- invalid -- Nepal Ground Skink
  Asymblepharus nyingchiensis Jiang, Wu, Wang, Ding and Che, 2020 -- invalid
  Asymblepharus sikimmensis (Blyth, 1854) -- invalid -- Sikkim Ground Skink, Bronzy-brown Skink
  Asymblepharus tragbulensis (Alcock, 1898) -- invalid
  Ateuchosaurus chinensis Gray, 1845 -- valid -- Chinese Short-limbed Skink
  Ateuchosaurus pellopleurus (Hallowell, 1861) -- valid -- Ryukyu Short-legged Skink
  Ateuchosaurus pellopleurus browni (Van Denburgh, 1912) -- invalid
  Atheris acuminata Broadley, 1998 -- valid -- Acuminate 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 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
  Atlantolacerta andreanskyi (Werner, 1929) -- valid -- Andreansky's Lizard
  Atractaspis andersonii Boulenger, 1905 -- valid -- Arabian Small-Scaled Burrowing Asp
  Atractaspis aterrima Günther, 1863 -- valid -- Slender Burrowing Asp, 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 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 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 magrettii Scortecci, 1928 -- valid -- Magretti's Burrowing Asp
  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 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 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 boulengerii Peracca, 1896 -- valid
  Atractus caete Passos, Fernandes, Bérnils and Moura-Leite, 2010 -- 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 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 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 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 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 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 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 univittatus (Jan, 1862) -- invalid -- One-banded Ground Snake
  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
  Aurivela longicauda (Bell, 1843) -- valid -- Longtail Whiptail
  Aurivela tergolaevigata (Cabrera, 2004) -- valid
  Australolacerta australis (Hewitt, 1926) -- valid -- Southern Rock Lizard
  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
  Bachia barbouri Burt and Burt, 1931 -- valid -- Barbour's Bachia
  Bachia bicolor (Cope, 1896) -- valid -- Two-colored Bachia
  Bachia bresslaui (Amaral, 1935) -- valid -- Bresslau's Bachia
  Bachia cacerensis Castrillon and Strussman, 1998 -- valid
  Bachia didactyla De Freitas, Strüssmann, de Carvalho, Kawashita-Ribeiro and Mott, 2011 -- valid
  Bachia dorbignyi (Duméril and Bibron, 1839) -- valid -- Dorbigny's Bachia
  Bachia flavescens (Bonnaterre, 1789) -- valid -- Yellow-lined Bachia
  Bachia geralista Teixeira, Sousa-Recoder, Camacho, de Sena, Navas and Rodrigues, 2013 -- valid
  Bachia guianensis Hoogmoed and Dixon, 1977 -- valid -- Guyana Bachia
  Bachia heteropa (Lichtenstein and Martens in Lichtenstein, 1856) -- valid -- LaGuaira Bachia, Worm Lizard
  Bachia heteropa lineata Boulenger, 1903 -- invalid
  Bachia huallagana Dixon, 1973 -- valid -- Dixon's Bachia
  Bachia intermedia Noble, 1921 -- valid -- Noble's Bachia
  Bachia micromela Rodrigues, Pavan and Curcio, 2007 -- valid
  Bachia pallidiceps (Cope, 1862) -- valid -- Cope's Bachia
  Bachia panoplia Thomas, 1965 -- valid
  Bachia peruana (Werner, 1901) -- valid -- Peru Bachia
  Bachia psamophila Rodrigues, Pavan and Curcio, 2007 -- valid
  Bachia pyburni Kizirian and McDiarmid, 1998 -- valid
  Bachia scaea Teixeira, Dal Vechio, Nunes, Mollo-Neto, Moreira-Lobo, Storti, Junqueira-Gaiga et al., 2013 -- valid
  Bachia scolecoides Vanzolini, 1961 -- valid -- Vanzolini's Bachia
  Bachia talpa Ruthven, 1925 -- valid -- Ruthven's Bachia
  Bachia trisanale (Cope, 1868) -- valid -- Stacy's Bachia
  Bachia trisanale abendrothi (Peters, 1871) -- valid
  Bachia trisanale trisanale (Cope, 1868) -- valid
  Bachia trisanale vermiformis (Cope, 1874) -- valid
  Baikia africana Gray, 1865 -- valid -- West African Worm Lizard
  Balanophis H. M. Smith, 1938 -- valid
  Balanophis ceylonensis (Günther, 1858) -- valid -- Sri Lankan Keelback Blossom Krait
  Bamanophis dorri (Lataste, 1888) -- valid
  Barisia herrerae Zaldívar-Riverón and Nieto-Montes de Oca, 2002 -- valid -- Herrera's Alligator Lizard
  Barisia imbricata (Wiegmann, 1828) -- valid -- Lagarto alicante del Popocatépetl, Imbricate Alligator Lizard, Transvolcanic Alligator Lizard
  Barisia imbricata jonesi Guillette and Smith, 1982 -- invalid
  Barisia levicollis Stejneger, 1890 -- valid -- Lagarto alicante de Chihuahua, Chihuahuan Alligator Lizard
  Barisia rudicollis (Wiegmann, 1828) -- valid -- Lagarto alicante cuello rugoso, Rough-necked Alligator Lizard
  Barkudia insularis Annandale, 1917 -- valid -- Madras Spotted Skink
  Barkudia melanosticta (Schneider, 1801) -- valid -- Visakhapatnam Limbless Skink
  Bassiana duperreyi (Gray, 1838) -- invalid
  Bassiana platynota (Peters, 1881) -- invalid
  Bassiana trilineata (Gray, 1838) -- invalid
  Bellatorias frerei (Günther, 1897) -- valid -- Major Skink
  Bellatorias major (Gray, 1845) -- valid -- Land Mullet
  Bellatorias obiri (Wells and Wellington, 1985) -- valid -- Arnhem Land Gorges Skink
  Bipedidae Taylor, 1951 -- valid -- Two-legged Worm Lizards
  Bipes biporus (Cope, 1894) -- valid -- Lagartija-topo cinco dedos, Five-toed Worm Lizard
  Bipes canaliculatus Latreille in Sonnini and Latreille, 1801 -- valid -- Lagartija-topo cuatro dedos, Four-toed Worm Lizard
  Bipes canaliculatus canaliculatus Latreille in Sonnini and Latreille, 1801 -- valid
  Bipes canaliculatus multiannulatus Alvarez, 1966 -- valid
  Bipes tridactylus (Dugès, 1894) -- valid -- Lagartija-topo tres dedos, Three-toed Worm Lizard
  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 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
  Blanidae Kearney, 2003 -- valid
  Blanus cinereus (Vandelli, 1797) -- valid -- Mediterranean Worm Lizard
  Blanus mariae Albert and Fernández, 2009 -- invalid
  Blanus mettetali Bons, 1963 -- valid
  Blanus strauchi (Bedriaga, 1884) -- valid -- Turkish Worm Lizard
  Blanus strauchi bedriagae Boulenger, 1884 -- valid
  Blanus strauchi strauchi (Bedriaga, 1884) -- valid
  Blanus tingitanus Busack, 1988 -- valid
  Blythia Theobold, 1868 -- valid
  Blythia reticulata (Blyth, 1854) -- valid -- Blyth's Reticulate Snake
  Boa constrictor Linnaeus, 1758 -- valid -- Boa Constrictor, Boa constrictor
  Boa constrictor amarali (Stull, 1932) -- valid
  Boa constrictor constrictor Linnaeus, 1758 -- valid
  Boa constrictor imperator Daudin, 1803 -- valid
  Boa constrictor longicauda Price and Russo, 1991 -- valid
  Boa constrictor mexicana Jan, 1863 -- valid
  Boa constrictor nebulosa (Lazell, 1964) -- valid
  Boa constrictor occidentalis Philippi, 1873 -- valid
  Boa constrictor orophias Linnaeus, 1758 -- valid
  Boa constrictor ortonii Cope, 1878 -- valid
  Boa constrictor sabogae (Barbour, 1906) -- valid
  Boa imperator Daudin, 1803 -- invalid
  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 lineatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Striped House Snake
  Boaedon maculatus Parker, 1932 -- valid -- Dotted House Snake, Somali House Snake
  Boaedon olivaceus (A. H. A. Duméril, 1856) -- valid -- Olive House 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
  Boidae Gray, 1825 -- valid -- Boas, Boids
  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
  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 sancticrucis (Cope, 1862) -- valid -- St. Croix Racer
  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 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 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 chloromelas (Boulenger, 1912) -- invalid
  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 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 bilineatus smaragdinus Hoge, 1966 -- valid
  Bothrops brazili Hoge, 1954 -- valid -- Brazil's Lancehead
  Bothrops caribbaeus (Garman, 1887) -- valid -- Saint Lucia Viper
  Bothrops cotiara (Gomes, 1913) -- valid
  Bothrops diporus Cope, 1862 -- valid
  Bothrops erythromelas Amaral, 1923 -- valid -- Caatinga Lancehead
  Bothrops fonsecai Hoge and Belluomini, 1959 -- valid -- Fonseca's Lancehead
  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 leucurus Wagler, 1824 -- valid -- Whitetail Lancehead
  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 moojeni Hoge, 1966 -- valid -- Brazilian Lancehead
  Bothrops muriciensis Ferrarezzi and Freire, 2001 -- valid
  Bothrops neuwiedi Wagler, 1824 -- valid -- Jararaca Pintada
  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 pubescens (Cope, 1870) -- valid
  Bothrops punctatus (Garcia, 1896) -- valid -- Golden Lancehead, Chocoan Forest Pit Viper
  Bothrops rhombeatus Garcia, 1896 -- valid -- Cat Lancehead, Cauca Valley Yellow Lancehead
  Bothrops sanctaecrucis Hoge, 1966 -- valid -- Bolivian Lancehead
  Bothrops venezuelensis Sandner-Montilla, 1952 -- valid
  Brachymeles apus Hikida, 1982 -- valid -- Hikida's Short-legged Skink
  Brachymeles bicolandia Siler, Fuiten, Jones, Alcala and Brown, 2011 -- valid -- Bicol Slender Skink
  Brachymeles bicolor (Gray, 1845) -- valid -- Two-colored Short-legged Skink
  Brachymeles boholensis Brown and Rabor, 1967 -- valid -- Bohol Short-legged Skink
  Brachymeles bonitae A. M. C. Duméril and Bibron, 1839 -- valid -- Stub-limbed Burrowing Skink, Pretty Short-legged Skink
  Brachymeles boulengeri Taylor, 1922 -- valid -- Boulenger's Short-legged Skink
  Brachymeles brevidactylus Siler, Fuiten, Jones, Alcala and Brown, 2011 -- valid -- Southern Bicol Slender Skink
  Brachymeles cebuensis Brown and Rabor, 1967 -- valid -- Rabor's Short-legged Skink
  Brachymeles cobos Siler, Fuiten, Jones, Alcala and Brown, 2011 -- valid -- Catanduañes Slender Skink
  Brachymeles elerae Taylor, 1917 -- valid -- Common Short-legged Skink
  Brachymeles gracilis (Fischer, 1885) -- valid -- Graceful Short-legged Skink
  Brachymeles hilong Brown and Rabor, 1967 -- valid -- Graceful Short-legged Skink
  Brachymeles kadwa Siler and Brown, 2010 -- valid -- Jessi's Slender Skink
  Brachymeles libayani Siler, Fuiten, Jones, Alcala and Brown, 2011 -- valid -- Lapinig Islands' Slender Skink
  Brachymeles lukbani Siler, Balete, Diesmos and Brown, 2010 -- valid
  Brachymeles makusog Siler, Diesmos and Brown, 2010 -- valid
  Brachymeles mindorensis Brown and Rabor, 1967 -- valid -- Mindoro Short-legged Skink
  Brachymeles minimus Brown and Alcala, 1995 -- valid
  Brachymeles miriamae (Heyer, 1972) -- valid -- Miriam's Skink
  Brachymeles muntingkamay Siler, Rico, Duya and Brown, 2009 -- valid -- Caraballo Mountains Loam-swimming Skink
  Brachymeles orientalis Brown and Rabor, 1967 -- valid -- Southern Burrowing Skink
  Brachymeles paeforum Siler, Fuiten, Jones, Alcala and Brown, 2011 -- valid -- PAEF Slender Skink
  Brachymeles pathfinderi Taylor, 1925 -- valid -- Pathfinder Short-legged Skink
  Brachymeles samad Siler, Jones, Diesmos, Diesmos and Brown, 2012 -- valid -- Eastern Visayas Slender Skink
  Brachymeles samarensis Brown, 1956 -- valid -- Brown's Short-legged Skink
  Brachymeles schadenbergi (Fischer, 1885) -- valid -- Schadenberg's Burrowing Skink
  Brachymeles suluensis Taylor, 1918 -- valid -- Graceful Short-legged Skink
  Brachymeles talinis Brown, 1956 -- valid -- Duméril's Short-legged Skink
  Brachymeles taylori Brown, 1956 -- valid -- Taylor's Short-legged Skink
  Brachymeles tiboliorum Siler, Jones, Diesmos, Diesmos and Brown, 2012 -- valid -- Western Mindanao Slender Skink
  Brachymeles tridactylus Brown, 1956 -- valid -- Three-fingered Short-legged Skink
  Brachymeles tungaoi Siler and Brown, 2010 -- valid -- Tungao's Slender Skink
  Brachymeles vermis Taylor, 1918 -- valid -- Taylor's Short-legged Skink
  Brachymeles vindumi Siler and Brown, 2010 -- valid -- Jens' Slender Skink
  Brachymeles vulcani Siler, Jones, Diesmos, Diesmos and Brown, 2012 -- valid -- Camiguin Sur Slender Skink
  Brachymeles wrighti Taylor, 1925 -- valid -- Wright's Short-legged Skink
  Brachyophidium Wall, 1921 -- invalid
  Brachyophidium rhodogaster Wall, 1921 -- invalid
  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
  Brasiliscincus agilis (Raddi, 1823) -- valid
  Brasiliscincus caissara (Reboucas-Spieker, 1974) -- valid -- Caissara Squamata
  Brasiliscincus heathi (Schmidt and Inger, 1951) -- valid -- Brazilian Mabuya
  Brygophis coulangesi (Domergue, 1988) -- valid
  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
  Caaeteboia amarali (Wettstein, 1930) -- valid -- Amaral's Ground Snake
  Cadea blanoides Stejneger, 1916 -- valid -- Cuban Spotted Worm Lizard, Spotted Amphisbaena
  Cadea palirostrata Dickerson, 1916 -- valid -- Cuban Sharp-nosed Worm Lizard, Sharp-nosed Amphisbaena
  Cadeidae Vidal and Hedges, 2007 -- valid -- Cuban Worm Lizards
  Calabaria reinhardtii (Schlegel, 1848) -- 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 apraeocularis M. A. Smith, 1927 -- valid -- Apreocular Reed Snake
  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 ceramensis de Rooij, 1913 -- valid
  Calamaria concolor Orlov, T. Q. Nguyen, T. T. Nguyen, Ananjeva and Cuc Thu Ho, 2010 -- valid
  Calamaria crassa Lidth de Jeude, 1922 -- valid
  Calamaria curta Boulenger, 1896 -- valid -- Dark-bellied Reed Snake
  Calamaria doederleini Gough, 1902 -- valid
  Calamaria eiselti Inger and Marx, 1965 -- valid
  Calamaria everetti Boulenger, 1893 -- valid
  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 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 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 lumholtzi Andersson, 1923 -- valid
  Calamaria margaritophora Bleeker, 1860 -- valid -- Bleeker's Dwarf Snake
  Calamaria mecheli Schenkel, 1901 -- valid
  Calamaria melanota Jan, 1862 -- valid
  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 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 virgulata H. Boie in F. Boie, 1827 -- valid -- Boie's Dwarf Snake
  Calamaria yunnanensis Chernov, 1962 -- valid
  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 acuticeps Ahl, 1933 -- valid -- Sulawesi Iridescent Snake
  Calamorhabdium kuekenthali Boettger, 1898 -- valid -- Batjan Iridescent Snake
  Caledoniscincus aquilonius Sadlier, Bauer and Colgan, 1999 -- valid
  Caledoniscincus atropunctatus (Roux, 1913) -- valid
  Caledoniscincus auratus Sadlier, Bauer and Colgan, 1999 -- valid
  Caledoniscincus austrocaledonicus (Bavay, 1869) -- valid
  Caledoniscincus chazeaui Sadlier, Bauer and Colgan, 1999 -- valid
  Caledoniscincus constellatus Sadlier, Whitaker, Wood and Bauer, 2012 -- valid
  Caledoniscincus cryptos Sadlier, Bauer and Colgan, 1999 -- valid
  Caledoniscincus festivus (Roux, 1913) -- valid
  Caledoniscincus haplorhinus (Günther, 1872) -- valid
  Caledoniscincus notialis Sadlier, Smith, Bauer and Wood in Sadlier et al., 2013 -- valid
  Caledoniscincus orestes Sadlier, 1987 -- valid
  Caledoniscincus renevieri Sadlier, Bauer and Colgan, 1999 -- valid
  Caledoniscincus terma Sadlier, Bauer and Colgan, 1999 -- valid
  Callopistes flavipunctatus (Duméril and Bibron, 1839) -- valid -- False Monitor
  Callopistes maculatus Gravenhorst, 1838 -- valid -- Spotted False Monitor
  Callopistes maculatus atacamensis Donoso-Barros, 1960 -- valid
  Callopistes maculatus maculatus Gravenhorst, 1838 -- valid
  Callopistes maculatus manni Donoso-Barros, 1960 -- valid
  Calloselasma rhodostoma (Kuhl, 1824) -- valid -- Malayan Pit Viper
  Calloselasma rhodostoma annamensis (Angel, 1933) -- valid
  Calloselasma rhodostoma rhodostoma (Kuhl, 1824) -- valid
  Calyptommatus confusionibus Rodrigues, Zaher and Curcio, 2001 -- valid
  Calyptommatus leiolepis Rodrigues, 1991 -- valid
  Calyptommatus nicterus Rodrigues, 1991 -- valid -- Rodrigues' Microteeid
  Calyptommatus sinebrachiatus Rodrigues, 1991 -- valid -- Lesser Microteiid
  Calyptotis lepidorostrum Greer, 1983 -- valid -- Cone-eared Calyptotis
  Calyptotis ruficauda Greer, 1983 -- valid -- Red-tailed Calyptotis
  Calyptotis scutirostrum (Peters, 1874) -- valid -- Scute-snouted Calyptotis
  Calyptotis temporalis Greer, 1983 -- valid -- Broad-templed Calyptotis
  Calyptotis thorntonensis Greer, 1983 -- valid -- Thornton Peak Calyptotis, Thornton Peak Skink
  Candoia aspera (Günther, 1877) -- valid
  Candoia aspera aspera (Günther, 1877) -- valid
  Candoia aspera schmidti (Stull, 1932) -- valid
  Candoia bibroni (A. M. C. Duméril and Bibron, 1844) -- valid -- Bibron's Keel-scaled Boa, Bibron's Bevel-nosed Boa, Pacific Tree Boa
  Candoia bibroni australis (Montrouzier, 1860) -- valid
  Candoia bibroni bibroni (A. M. C. Duméril and Bibron, 1844) -- valid
  Candoia carinata (Schneider, 1801) -- valid -- Pacific Keel-scaled Boa, Pacific Ground Boa
  Candoia carinata carinata (Schneider, 1801) -- valid
  Candoia carinata tepedeleni H. M. Smith, Chiszar, Tepedelen and van Breukelen, 2001 -- valid
  Candoia paulsoni (Stull, 1956) -- valid -- Solomon Island Ground Boa
  Candoia paulsoni mcdowelli H. M. Smith and Chiszar, 2001 -- valid
  Candoia paulsoni paulsoni (Stull, 1956) -- valid
  Candoia paulsoni rosadoi H. M. Smith and Chiszar, 2001 -- valid
  Candoia paulsoni sadlieri H. M. Smith and Chiszar, 2001 -- valid
  Candoia paulsoni tasmai H. M. Smith and Tepedelen, 2001 -- valid
  Candoia paulsoni vindumi H. M. Smith and Chiszar, 2001 -- valid
  Candoia superciliosa (Günther, 1863) -- valid -- Palau Bevel-nosed Boa
  Candoia superciliosa crombiei H. M. Smith, Chiszar, Tepedelen and van Breukelen, 2001 -- valid
  Candoia superciliosa superciliosa (Günther, 1863) -- valid
  Caparaonia itaiquara Rodrigues, Cassimiro, Pavan, Curcio, Kruth Verdade and Machado Pellegrino, 2009 -- valid
  Capitellum mariagalantae Hedges and Conn, 2012 -- valid -- Marie-Galante Skink
  Capitellum metallicum (Bocourt, 1879) -- valid -- Lesser Martinique Skink
  Capitellum parvicruzae Hedges and Conn, 2012 -- valid -- Lesser Saint Croix Skink
  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
  Carlia aenigma Zug, 2004 -- valid
  Carlia ailanpalai Zug, 2004 -- valid -- Curious Skink
  Carlia amax Storr, 1974 -- valid -- Bauxite Rainbow-skink
  Carlia aramia Zug, 2004 -- valid
  Carlia babarensis (Kopstein, 1926) -- valid
  Carlia beccarii (Peters and Doria, 1878) -- valid
  Carlia bicarinata (Macleay, 1877) -- valid -- Rainbow-skink
  Carlia bomberai Zug and Allison, 2006 -- valid
  Carlia caesius Zug and Allison, 2006 -- valid
  Carlia decora Hoskin and Couper, 2012 -- valid -- Elegant Rainbow Skink
  Carlia diguliensis (Kopstein, 1926) -- valid
  Carlia dogare Covacevich and Ingram, 1975 -- valid -- Sandy Rainbow-skink
  Carlia eothen Zug, 2004 -- valid
  Carlia fusca (A. M. C. Duméril and Bibron, 1839) -- valid -- Curious Skink, Brown Four-fingered Skink, Indonesian Brown Skink Carlia
  Carlia gracilis Storr, 1974 -- valid -- Slender Rainbow-skink
  Carlia inconnexa Ingram and Covacevich, 1989 -- valid -- Whitsunday Rainbow Skink
  Carlia jarnoldae Covacevich and Ingram, 1975 -- valid -- Lined Rainbow-skink
  Carlia johnstonei Storr, 1974 -- valid -- Lined Rainbow-skink
  Carlia leucotaenia (Bleeker, 1860) -- valid
  Carlia longipes (Macleay, 1877) -- valid -- Closed-litter Rainbow-skink
  Carlia luctuosa (Peters and Doria, 1878) -- valid
  Carlia munda (De Vis, 1885) -- valid -- Shaded-litter Rainbow-skink
  Carlia mysi Zug, 2004 -- valid
  Carlia nigrauris Zug, 2010 -- valid
  Carlia pectoralis (De Vis, 1885) -- valid -- Open-litter Rainbow-skink
  Carlia peronii (A. M. C. Duméril and Bibron, 1839) -- valid
  Carlia pulla (Barbour, 1911) -- valid
  Carlia quinquecarinata (Macleay, 1877) -- valid -- Five-carinated Rainbow Skink
  Carlia rhomboidalis (Peters, 1869) -- valid -- Blue-throated Rainbow-skink
  Carlia rimula Ingram and Covacevich, 1980 -- invalid
  Carlia rostralis (De Vis, 1885) -- valid -- Black-throated Rainbow-skink, Hooded Rainbow Skink
  Carlia rubigo Hoskin and Couper, 2012 -- valid -- Orange-flanked Rainbow Skink
  Carlia rubrigularis Ingram and Covacevich, 1989 -- valid -- Red-throated Rainbow-skink, Northern Red-throated Skink
  Carlia rufilatus Storr, 1974 -- valid -- Red-sided Rainbow-skink
  Carlia schmeltzii (Peters, 1867) -- valid -- Robust Rainbow-skink
  Carlia sexdentata (Macleay, 1877) -- valid -- Closed-litter Rainbow-skink
  Carlia storri Ingram and Covacevich, 1989 -- valid -- Brown Bicarinate Rainbow-skink
  Carlia tetradactyla (O'Shaughnessy, 1879) -- valid -- Southern Rainbow-skink
  Carlia triacantha (Mitchell, 1953) -- valid -- Desert Rainbow-skink
  Carlia tutela Zug, 2004 -- valid
  Carlia vivax (De Vis, 1884) -- valid -- Tussock Rainbow-skink
  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
  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 resimus (Peters, 1862) -- valid -- Green Night Adder
  Causus rhombeatus (Lichtenstein, 1823) -- valid -- Rhombic Night Adder, Common Night Adder
  Celatiscincus euryotis (Werner, 1910) -- valid
  Celatiscincus similis Sadlier, Smith and Bauer, 2006 -- valid
  Celestus adercus Savage, Lips and Ibáñez, 2008 -- valid
  Celestus agasepsoides (Thomas, 1971) -- valid -- Serpentine Four-toed Galliwasp
  Celestus anelpistus (Schwartz, Graham and Duval, 1979) -- valid -- Altagracia Giant Galliwasp
  Celestus badius Cope, 1868 -- valid -- Navassa Island Galliwasp, Navassa Galliwasp
  Celestus barbouri Grant, 1940 -- valid -- Limestone Forest Galliwasp
  Celestus bivittatus (Boulenger, 1895) -- invalid
  Celestus costatus (Cope, 1862) -- valid -- Costate Galliwasp, Hispaniolan Smooth Galliwasp, Common Hispaniolan Galliwasp
  Celestus costatus aenetergum Schwartz and Jacobs, 1989 -- valid
  Celestus costatus chalcorhabdus (Schwartz, 1964) -- valid
  Celestus costatus costatus (Cope, 1862) -- valid
  Celestus costatus emys (Schwartz, 1971) -- valid
  Celestus costatus leionotus (Schwartz, 1964) -- valid
  Celestus costatus melanchrous (Schwartz, 1964) -- valid
  Celestus costatus neiba (Schwartz, 1964) -- valid
  Celestus costatus nesobous (Schwartz, 1964) -- valid
  Celestus costatus oreistes (Schwartz, 1964) -- valid
  Celestus costatus psychonothes (Schwartz, 1964) -- valid
  Celestus costatus saonae (Schwartz, 1971) -- valid
  Celestus crusculus (Garman, 1887) -- valid -- Jamaican Galliwasp, Garman's Galliwasp
  Celestus crusculus crusculus (Garman, 1887) -- valid
  Celestus crusculus cundalli Grant, 1940 -- valid
  Celestus crusculus maculatus (Garman, 1888) -- valid
  Celestus crusculus molesworthi Grant, 1940 -- valid
  Celestus curtissi Grant, 1951 -- valid -- Hispaniolan Khaki Galliwasp, Curtis' Galliwasp
  Celestus curtissi aporus (Schwartz, 1964) -- valid
  Celestus curtissi curtissi Grant, 1951 -- valid
  Celestus curtissi diastatus (Schwartz, 1964) -- valid
  Celestus curtissi hylonomus (Schwartz, 1964) -- valid
  Celestus cyanochloris Cope, 1894 -- valid
  Celestus darlingtoni Cochran, 1939 -- valid -- Hispaniolan Striped Galliwasp, Darlington's Galliwasp
  Celestus duquesneyi Grant, 1940 -- valid -- Blue-tailed Galliwasp, Duquesney's Galliwasp
  Celestus enneagrammus (Cope, 1861) -- valid -- Celesto huasteco, Huaxteca Lesser Galliwasp
  Celestus fowleri (Schwartz, 1971) -- valid -- Bromeliad Galliwasp, Fowler's Galliwasp
  Celestus haetianus (Cochran, 1927) -- valid -- Hispaniolan Earless Galliwasp
  Celestus haetianus haetianus (Cochran, 1927) -- valid
  Celestus haetianus mylicus (Schwartz, 1965) -- valid
  Celestus haetianus surdus (Schwartz, 1965) -- valid
  Celestus hewardi Gray, 1845 -- valid -- Heward's Galliwasp
  Celestus hylaius Savage and Lips, 1993 -- valid
  Celestus macrotus Thomas and Hedges, 1989 -- valid -- La Selle Galliwasp, Thomas' Galliwasp
  Celestus marcanoi (Schwartz and Incháustegui, 1976) -- valid -- Pico Duarte Galliwasp, Marcano's Galliwasp
  Celestus microblepharis (Underwood, 1959) -- valid -- Small-eyed Galliwasp, Tiny Eyelid Galliwasp
  Celestus montanus Schmidt, 1933 -- invalid
  Celestus occiduus (Shaw, 1802) -- valid -- Jamaican Giant Galliwasp, Sinking Galliwasp
  Celestus orobius Savage and Lips, 1993 -- valid
  Celestus rozellae Smith, 1942 -- valid -- Celesto vientre verde, Rozella's Lesser Galliwasp
  Celestus scansorius McCranie and Wilson, 1996 -- invalid
  Celestus sepsoides (Gray, 1852) -- valid -- Hispaniolan Four-toed Galliwasp, Common four-toed Galliwasp
  Celestus stenurus (Cope, 1862) -- valid -- Hispaniolan Keeled Galliwasp, Cope's Galliwasp
  Celestus stenurus alloeides (Schwartz, 1964) -- valid
  Celestus stenurus rugosus Cope, 1879 -- valid
  Celestus stenurus stenurus (Cope, 1862) -- valid
  Celestus stenurus weinlandi Cope, 1868 -- valid
  Celestus warreni (Schwartz, 1970) -- valid -- Hispaniolan Giant Galliwasp, Haitian Giant Galliwasp
  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
  Cerastes boehmei Wagner and Wilms, 2010 -- valid
  Cerastes cerastes (Linnaeus, 1758) -- valid -- Desert Horned Viper
  Cerastes cerastes cerastes (Linnaeus, 1758) -- valid
  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 vipera (Linnaeus, 1758) -- valid -- Sahara Sand Viper
  Cercophis auratus (Schlegel, 1837) -- valid -- Schlegel's Golden Snake
  Cercosaura argulus Peters, 1863 -- valid -- White-lipped Prionodactylus
  Cercosaura dicra (Uzzell, 1973) -- invalid
  Cercosaura eigenmanni (Griffin, 1917) -- valid -- Eigenmann's Prionodactylus
  Cercosaura hypnoides Doan and Lamar, 2012 -- valid
  Cercosaura manicata O'Shaughnessy, 1881 -- valid -- Slender Prionodactylus
  Cercosaura manicata bolivianus (Werner, 1899) -- valid
  Cercosaura manicata manicata O'Shaughnessy, 1881 -- valid
  Cercosaura nigroventris (Gorzula and Senaris, 1999) -- valid
  Cercosaura ocellata Wagler, 1830 -- valid -- Ocellated Tegu
  Cercosaura ocellata bassleri Ruibal, 1952 -- invalid
  Cercosaura ocellata petersi Ruibal, 1952 -- invalid
  Cercosaura parkeri (Ruibal, 1952) -- valid -- Parker's Many-fingered Teiid
  Cercosaura phelpsorum (Lancini, 1968) -- valid
  Cercosaura quadrilineata Boettger, 1876 -- valid -- Lined Many-fingered Teiid
  Cercosaura schreibersii Wiegmann, 1834 -- valid -- Long-tailed Little Lizard, Schreibers' Many-fingered Teiid
  Cercosaura schreibersii albostrigatus (Griffin, 1917) -- valid
  Cercosaura schreibersii schreibersii Wiegmann, 1834 -- valid
  Cercosaura steyeri (Tedesco, 1998) -- valid
  Cercosaura vertebralis O'Shaughnessy, 1879 -- invalid
  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
  Chabanaudia boulengeri (Chabanaud, 1917) -- invalid
  Chalcides armitagei Boulenger, 1922 -- valid -- Armitage's Cylindrical Skink
  Chalcides bedriagai (Bosca, 1880) -- valid -- Spanish Cylindrical Skink
  Chalcides bedriagai bedriagai (Bosca, 1880) -- valid
  Chalcides bedriagai cobosi Valverde, 1997 -- valid
  Chalcides bedriagai pistaciae Valverde, 1966 -- valid
  Chalcides bottegi Boulenger, 1898 -- valid -- Ocellated Skink
  Chalcides boulengeri Anderson, 1892 -- valid -- Boulenger's Feylinia
  Chalcides chalcides (Linnaeus, 1758) -- valid -- Cylindrical Skink, Italian Three-toed Skink
  Chalcides chalcides chalcides (Linnaeus, 1758) -- valid
  Chalcides chalcides vittatus (Leuckart, 1828) -- valid
  Chalcides coeruleopunctatus Salvador, 1975 -- valid -- La Gomera Skink
  Chalcides colosii Lanza, 1957 -- valid -- Colosi's Cylindrical Skink
  Chalcides delislei (Lataste and Rochebrune, 1876) -- valid -- Delisle's Wedge-snouted Skink
  Chalcides ebneri Werner, 1931 -- valid -- Ebner's Cylindrical Skink
  Chalcides guentheri Boulenger, 1887 -- valid -- Günther's Cylindrical Skink
  Chalcides lanzai Pasteur, 1967 -- valid
  Chalcides levitoni Pasteur, 1978 -- valid -- Leviton's Cylindrical Skink
  Chalcides manueli Hediger, 1935 -- valid
  Chalcides mauritanicus (A. M. C. Duméril and Bibron, 1839) -- valid -- Cylindrical Skink
  Chalcides mertensi Klausewitz, 1954 -- valid -- Algerian Three-toed Skink
  Chalcides minutus Caputo, 1993 -- valid
  Chalcides mionecton (Böttger, 1874) -- valid -- Morocco Cylindrical Skink
  Chalcides mionecton mionecton (Böttger, 1874) -- valid
  Chalcides mionecton trifasciatus Chabanaud, 1917 -- valid
  Chalcides montanus Werner, 1931 -- valid
  Chalcides ocellatus (Forskal, 1775) -- valid -- Ocellated Skink, Ocellated Bronze Skink
  Chalcides ocellatus linosae Boulenger, 1920 -- valid
  Chalcides ocellatus ocellatus (Forskal, 1775) -- valid
  Chalcides ocellatus sacchii Lanza, 1954 -- valid
  Chalcides ocellatus subtypicus Werner, 1931 -- valid
  Chalcides ocellatus tiligugu (Gmelin, 1789) -- valid
  Chalcides ocellatus zavattarii Lanza, 1954 -- valid
  Chalcides parallelus Doumergue, 1901 -- valid -- Chafarinas' Skink
  Chalcides pentadactylus (Beddome, 1870) -- valid
  Chalcides polylepis Boulenger, 1890 -- valid -- Many-scaled Cylindrical Skink, Multiscaled Skink
  Chalcides pseudostriatus Caputo, 1993 -- valid
  Chalcides pulchellus Mocquard, 1906 -- valid -- Mocquard's Cylindrical Skink
  Chalcides ragazzii Boulenger, 1890 -- valid -- Ragazzi's Cylindrical Skink, Ragazzi's Bronze Skink
  Chalcides sepsoides (Audouin, 1829) -- valid -- Wedge-snouted Skink
  Chalcides sexlineatus Steindachner, 1891 -- valid -- Gran Canaria Skink
  Chalcides sexlineatus bistriatus Steindachner, 1891 -- valid
  Chalcides sexlineatus sexlineatus Steindachner, 1891 -- valid
  Chalcides sphenopsiformis (A. H. A. Duméril, 1856) -- valid -- Duméril's Wedge-snouted Skink
  Chalcides striatus (Cuvier, 1829) -- valid -- Western Three-Toed Skink, Iberian Three-Toed Skink
  Chalcides thierryi Tornier, 1901 -- valid -- Thierry's Cylindrical Skink
  Chalcides viridanus (Gravenhorst, 1851) -- valid -- Tenerife Skink, Canaryan Cylindrical Skink
  Chalcidoseps thwaitesi (Günther, 1872) -- valid -- Thwaites' Skink
  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
  Chamaesaura aenea (Fitzinger, 1843) -- valid -- Transvaal Snake Lizard
  Chamaesaura anguina (Linnaeus, 1758) -- valid -- Cape Grass Lizard, Cape Snake Lizard
  Chamaesaura anguina anguina (Linnaeus, 1758) -- valid
  Chamaesaura anguina oligopholis Laurent, 1964 -- valid
  Chamaesaura macrolepis (Cope, 1862) -- valid -- Large-scale Grass Lizard, Large-scale Snake Lizard
  Chamaesaura miopropus Boulenger, 1894 -- valid -- Zambian Snake-lizard, Zambian Grass-lizard
  Chamaesaura tenuior Günther, 1895 -- valid -- Cape Snake Lizard
  Chapinophis xanthocheilus Campbell and E. N. Smith, 1998 -- valid
  Charina bottae (Blainville, 1835) -- valid -- Rubber Boa, Northern Rubber Boa
  Charina umbratica Klauber, 1943 -- valid -- Southern Rubber Boa
  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
  Chilabothrus angulifer (Bibron, 1840) -- valid -- Cuban Boa
  Chilabothrus chrysogaster (Cope, 1871) -- valid -- Southern Bahamas Boa
  Chilabothrus chrysogaster chrysogaster (Cope, 1871) -- valid
  Chilabothrus chrysogaster relicquus (Barbour and Shreve, 1935) -- valid
  Chilabothrus chrysogaster schwartzi (Buden, 1975) -- valid -- Crooked-Acklins Boa
  Chilabothrus exsul (Netting and Goin, 1944) -- valid -- Northern Bahamas Boa
  Chilabothrus fordii (Günther, 1861) -- valid
  Chilabothrus fordii agametus (Sheplan and Schwartz, 1974) -- valid
  Chilabothrus fordii fordii (Günther, 1861) -- valid
  Chilabothrus fordii manototus (Schwartz, 1979) -- valid
  Chilabothrus gracilis Fischer, 1888 -- valid
  Chilabothrus gracilis gracilis Fischer, 1888 -- valid
  Chilabothrus gracilis hapalus (Sheplan and Schwartz, 1974) -- valid
  Chilabothrus inornatus (Reinhardt, 1843) -- valid -- Puerto Rican Boa
  Chilabothrus monensis (Zenneck, 1898) -- valid -- Mona Boa
  Chilabothrus monensis granti (Stull, 1933) -- invalid -- Virgin Island Tree Boa
  Chilabothrus monensis monensis (Zenneck, 1898) -- invalid -- Mona Boa
  Chilabothrus striatus (Fischer, 1856) -- valid -- Hispaniolan Boa
  Chilabothrus striatus exagistus (Sheplan and Schwartz, 1974) -- valid
  Chilabothrus striatus striatus (Fischer, 1856) -- valid
  Chilabothrus striatus warreni (Sheplan and Schwartz, 1974) -- valid
  Chilabothrus strigilatus (Cope, 1862) -- valid -- Bahamas Boa
  Chilabothrus strigilatus ailurus (Sheplan and Schwartz, 1974) -- valid
  Chilabothrus strigilatus fosteri (Barbour, 1941) -- valid
  Chilabothrus strigilatus fowleri (Sheplan and Schwartz, 1974) -- valid
  Chilabothrus strigilatus mccraniei (Sheplan and Schwartz, 1974) -- valid
  Chilabothrus strigilatus strigilatus (Cope, 1862) -- valid
  Chilabothrus subflavus (Stejneger, 1901) -- valid -- Jamaican Boa
  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 (Parker, 1927) -- invalid
  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 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
  Chioninia coctei (A. M. C. Duméril and Bibron, 1839) -- valid -- Cape Verde Giant Skink, Bibron's Skink
  Chioninia delalandii (A. M. C. Duméril and Bibron, 1839) -- valid
  Chioninia fogoensis (O'Shaughnessy, 1874) -- valid
  Chioninia geisthardti (Joger, 1993) -- invalid
  Chioninia nicolauensis (Schleich, 1987) -- valid
  Chioninia spinalis (Boulenger, 1906) -- valid
  Chioninia spinalis boavistensis Miralles, Vasconcelos, Perera, Harris and Carranza, 2010 -- valid
  Chioninia spinalis maioensis (Mertens, 1955) -- valid
  Chioninia spinalis salensis (Angel, 1935) -- valid
  Chioninia spinalis santiagoensis Miralles, Vasconcelos, Perera, Harris and Carranza, 2010 -- valid
  Chioninia spinalis spinalis (Boulenger, 1906) -- valid
  Chioninia stangeri (Gray, 1845) -- valid
  Chioninia vaillantii (Boulenger, 1887) -- valid -- Vaillant's Mabuya
  Chioninia vaillantii vaillantii (Boulenger, 1887) -- valid
  Chioninia vaillantii xanthotis Miralles, Vasconcelos, Perera, Harris and Carranza, 2010 -- valid
  Chirindia ewerbecki Werner, 1910 -- valid -- Mbanja Worm Lizard
  Chirindia ewerbecki ewerbecki Werner, 1910 -- valid
  Chirindia ewerbecki nanguruwensis (Loveridge, 1962) -- valid
  Chirindia langi Fitzsimons, 1939 -- valid -- Lang's Worm Lizard
  Chirindia langi langi Fitzsimons, 1939 -- valid
  Chirindia langi occidentalis Jacobsen, 1984 -- valid
  Chirindia mpwapwaensis (Loveridge, 1932) -- valid -- Mpwapwa Worm Lizard
  Chirindia rondoensis (Loveridge, 1941) -- valid -- Nchingidi Worm Lizard
  Chirindia swynnertoni Boulenger, 1907 -- valid -- Swynnerton's Worm Lizard
  Chironius bicarinatus (Wied-Neuwied, 1820) -- valid -- Two-headed Sipo
  Chironius carinatus (Linnaeus, 1758) -- valid -- Sipo
  Chironius carinatus flavopictus (Werner, 1909) -- invalid
  Chironius carinatus spixii (Hallowell, 1845) -- invalid
  Chironius challenger Kok, 2010 -- valid
  Chironius exoletus (Linnaeus, 1758) -- valid -- Linnaeus' Sipo
  Chironius flavolineatus (Jan, 1863) -- valid -- Boettger's 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 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 vincenti (Boulenger, 1891) -- valid -- Saint Vincent Racer
  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
  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 plumbea (Wied-Neuwied, 1820) -- valid
  Clelia scytalina (Cope, 1867) -- valid -- Culebra-viborera mexicana, Mexican Snake Eater
  Clonophis Cope, 1889 -- valid -- Kirtland's Snakes
  Clonophis kirtlandii (Kennicott, 1856) -- valid -- Kirtland's Snake
  Cnemidophorus arenivagus Markezich, Cole and Dessauer, 1997 -- valid
  Cnemidophorus arubensis Lidth de Jeude, 1887 -- valid -- Aruba Whiptail
  Cnemidophorus cryptus Cole and Dessauer, 1993 -- valid -- Cryptic Racerunner
  Cnemidophorus duellmani McCranie and Hedges, 2013 -- valid
  Cnemidophorus flavissimus Ugueto, Harvey and Rivas, 2010 -- valid -- Los Frailes Whiptail
  Cnemidophorus gramivagus McCrystal and Dixon, 1987 -- valid
  Cnemidophorus hyperythrus caeruleus (Dickerson, 1919) -- invalid
  Cnemidophorus lemniscatus (Linnaeus, 1758) -- valid -- Rainbow Lizard, Rainbow Whiptail, South American Whiptail
  Cnemidophorus lemniscatus splendidus Markezich, Cole and Dessauer, 1997 -- invalid
  Cnemidophorus leucopsammus Ugueto and Harvey, 2010 -- valid -- Blanquilla Whiptail
  Cnemidophorus martyris Stejneger, 1891 -- invalid -- Huico de San Pedro Mártir
  Cnemidophorus murinus (Laurenti, 1768) -- valid -- Curaçao Whiptail, Laurent's Whiptail
  Cnemidophorus nigricolor Peters, 1873 -- valid -- Venezuelan Island Whiptail
  Cnemidophorus pseudolemniscatus Cole and Dessauer, 1993 -- valid -- Colee's Racerunner
  Cnemidophorus pyrrhogularis Basto da Silva and Ávila-Pires, 2013 -- invalid
  Cnemidophorus rostralis Ugueto and Harvey, 2010 -- valid -- La Tortuga Whiptail
  Cnemidophorus ruatanus Barbour, 1928 -- valid -- Central American Whiptail
  Cnemidophorus ruthveni Burt, 1935 -- valid -- Bonaire Whiptail
  Cnemidophorus senectus Ugueto, Harvey and Rivas, 2010 -- valid
  Cnemidophorus vanzoi (Baskin and Williams, 1966) -- valid -- Maria Islands Whiptail, Saint Lucian Whiptail, Vanzo's Whiptail, Maria Island Ground Lizard
  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 radiatus (F. Boie, 1827) -- valid -- Radiated Ratsnake, Copperhead Rat Snake, Copper-headed Trinket Snake
  Coelognathus subradiatus (Schlegel, 1837) -- valid -- Sunda Rat Snake
  Coeranoscincus frontalis (De Vis, 1888) -- valid -- Limbless Snake-tooth Skink
  Coeranoscincus reticulatus (Günther, 1873) -- valid -- Three-toed Snake-tooth Skink
  Coggeria naufragus Couper, Covacevich, Marsterson and Shea, 1996 -- valid -- Fraser Island Sand Skink
  Collorhabdium williamsoni Smedley, 1932 -- valid -- Williamson's Reed Snake, Mountain Dwarf Snake
  Colobodactylus dalcyanus Vanzolini and Ramos, 1977 -- valid -- Vanzolini's Teiid
  Colobodactylus taunayi Amaral, 1933 -- valid -- Taunay Teiid
  Colobosaura kraepelini (Werner, 1910) -- valid -- Chaco Colobosaura
  Colobosaura modesta (Reinhardt and Lütken, 1862) -- valid -- Bahia Colobosaura
  Colobosauroides carvalhoi Soares and Caramaschi, 1998 -- valid
  Colobosauroides cearensis Cunha, Lima-Verde and Lima, 1991 -- valid
  Coloptychon rhombifer (Peters, 1876) -- invalid
  Coluber anthonyi (Stejneger, 1901) -- valid -- Clarion Island Whip Snake, Culebra-chirriadora de Isla Clarion
  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 bholanathi Sharma, 1976 -- invalid
  Coluber bilineatus (Jan, 1863) -- valid -- Sonoran Whipsnake, Culebra-chirriadora sonorense
  Coluber bilineatus slevini (Lowe and Norris, 1955) -- 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 eques Reuss, 1834 -- 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 fuliginosus (Cope, 1895) -- valid -- Baja California Coachwhip
  Coluber helveticus Lacépède, 1789 -- invalid
  Coluber insulanus Mertens, 1965 -- 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 manseri Leviton, 1986 -- invalid
  Coluber maurus Linnaeus, 1758 -- 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 natrix Linnaeus, 1758 -- invalid
  Coluber persa Pallas, 1814 -- invalid
  Coluber proximus Say in James, 1823 -- invalid
  Coluber saurita Linnaeus, 1766 -- invalid
  Coluber schistosus Daudin, 1803 -- 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 siculus Cuvier, 1829 -- invalid
  Coluber sinai (Schmidt and Marx, 1956) -- invalid
  Coluber stolatus Linnaeus, 1758 -- invalid
  Coluber striatulus Linnaeus, 1766 -- 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 taxispilotus Holbrook, 1838 -- invalid
  Coluber taylori Parker, 1949 -- invalid
  Coluber thomasi Parker, 1931 -- invalid
  Coluber vittacaudatus Blyth, 1854 -- invalid
  Coluber vittatus Linnaeus, 1758 -- invalid
  Coluber zebrinus Broadley and Schätti, 2000 -- invalid
  Colubridae Oppel, 1811 -- valid -- Colubrids, Typical Snakes
  Colubroelaps nguyenvansangi Orlov, Kharin, Ananjeva, T. T. Nguyen and T. Q. Nguyen, 2009 -- valid -- Nguyenvansang's Snake
  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
  Concinnia ampla (Covacevich and McDonald, 1980) -- valid -- Lemon-barred Forest-skink
  Concinnia brachysoma (Lönnberg and Andersson, 1915) -- valid -- Northern Barsided Skink
  Concinnia frerei (Greer, 1992) -- valid -- Stout Barsided Skink
  Concinnia martini Wells and Wellington, 1985 -- valid -- Dark Barsided Skink
  Concinnia queenslandiae (De Vis, 1890) -- invalid -- Prickly Forest Skink
  Concinnia sokosoma (Greer, 1992) -- valid -- Stout Barsided Skink
  Concinnia tenuis (Gray, 1831) -- valid -- Bar-sided Forest-skink, Barred-sided Skink
  Concinnia tigrina (De Vis, 1888) -- valid -- Yellow-blotched Forest-skink, Rainforest Water-skink
  Congolacerta asukului Greenbaum, Villanueva, Kusamba, Aristote and Branch, 2011 -- valid -- Asukulu's Grass Lizard
  Congolacerta vauereselli (Tornier, 1902) -- valid -- Sparse-scaled Forest Lizard
  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 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 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 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
  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 pulcher Cope, 1869 -- invalid -- Culebra-guardacaminos hermosa
  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 longicaudae Feldman and Hoyer, 2010 -- invalid -- Forest Sharp-tailed Snake
  Contia tenuis (Baird and Girard, 1852) -- valid -- Sharp-tailed Snake, Sharptail Snake, Common Sharp-tailed Snake
  Contomastix lacertoides (Duméril and Bibron, 1839) -- valid -- Bibron's Whiptail
  Contomastix leachei (Peracca, 1897) -- valid
  Contomastix serrana (Cei and Martori, 1991) -- valid
  Contomastix vacariensis (Feltrim and Lema, 2000) -- valid
  Contomastix vittata (Boulenger, 1902) -- valid
  Copeoglossum arajara (Reboucas-Spieker, 1981) -- valid -- Arajara Mabuya
  Copeoglossum aurae Hedges and Conn, 2012 -- valid -- Greater Windward Skink
  Copeoglossum margaritae Hedges and Conn, 2012 -- valid
  Copeoglossum nigropunctatum (Spix, 1825) -- valid -- Black-Spotted Skink, Common Coppery Mabuya
  Copeoglossum redondae Hedges and Conn, 2012 -- valid -- Redonda Skink
  Cophoscincopus durus (Cope, 1862) -- valid -- Keeled Water Skink
  Cophoscincopus greeri Böhme, Schmitz and Ziegler, 2000 -- valid
  Cophoscincopus senegalensis Trape, Mediannikov and Trape, 2012 -- valid
  Cophoscincopus simulans (Vaillant, 1884) -- valid
  Corallus annulatus (Cope, 1875) -- valid
  Corallus batesii (Gray, 1860) -- valid
  Corallus blombergi (Rendahl and Vestergren, 1941) -- valid
  Corallus caninus (Linnaeus, 1758) -- valid
  Corallus cookii Gray, 1842 -- valid -- Cook's Tree Boa, Neotropical Tree Boa
  Corallus cropanii (Hoge, 1953) -- valid
  Corallus grenadensis (Barbour, 1914) -- valid
  Corallus hortulanus (Linnaeus, 1758) -- valid -- Amazon Tree Boa, Common Tree Boa
  Corallus hortulanus enydris (Linnaeus, 1758) -- valid
  Corallus hortulanus hortulanus (Linnaeus, 1758) -- valid
  Corallus ruschenbergerii (Cope, 1876) -- valid
  Cordylidae -- valid -- girdle-tailed lizards
  Cordylosaurus subtessellatus (Smith, 1844) -- valid -- Dwarf Plated Lizard
  Cordylus angolensis (Bocage, 1895) -- valid -- Angolan Girdled Lizard
  Cordylus aridus Mouton and Van Wyk, 1994 -- valid -- Eastern Dwarf Girdled Lizard, Dwarf Karoo Girdled Lizard
  Cordylus beraduccii Broadley and Branch, 2002 -- valid -- Maasai Girdled Lizard
  Cordylus cloetei Mouton and Van Wyk, 1994 -- valid -- Cloete's Girdled Lizard
  Cordylus cordylus (Linnaeus, 1758) -- valid -- Cape Girdled Lizard
  Cordylus imkeae Mouton and Van Wyk, 1994 -- valid -- Rooiberg Girdled Lizard
  Cordylus jonesii (Boulenger, 1891) -- valid -- Jones' Girdled Lizard
  Cordylus machadoi Laurent, 1964 -- valid -- Machado's Girdled Lizard, Kaokoveld Girdled Lizard
  Cordylus macropholis (Boulenger, 1910) -- valid -- Large-scaled Girdled Lizard
  Cordylus marunguensis Greenbaum, Stanley, Kusamba, Moninga, Goldberg and Bursey, 2012 -- valid -- Marungu Girdled Lizard
  Cordylus mclachlani Mouton, 1986 -- valid -- McLachlan's Girdled Lizard
  Cordylus meculae Branch, Rödel and Marais, 2005 -- valid -- Mecula Girdled Lizard
  Cordylus minor Fitzsimons, 1943 -- valid -- Western Dwarf Girdled Lizard
  Cordylus niger Cuvier, 1829 -- valid -- Black Girdled Lizard
  Cordylus nyikae Broadley and Mouton, 2000 -- valid -- Nyika Girdled Lizard
  Cordylus oelofseni Mouton and Van Wyk, 1990 -- valid -- Oelofsen's Girdled Lizard
  Cordylus rhodesianus (Hewitt, 1933) -- valid -- Zimbabwean Girdled Lizard
  Cordylus rivae (Boulenger, 1896) -- valid -- Ethiopian Girdled Lizard
  Cordylus tropidosternum (Cope, 1869) -- valid -- Tropical Girdled Lizard
  Cordylus ukingensis (Loveridge, 1932) -- valid -- Ukinga Girdled Lizard
  Cordylus vittifer (Reichenow, 1887) -- valid -- Transvaal Girdled Lizard
  Coronella austriaca Laurenti, 1768 -- valid -- Smooth Snake
  Coronella austriaca acutirostris Malkmus, 1995 -- valid
  Coronella austriaca austriaca Laurenti, 1768 -- valid
  Coronella brachyura (Günther, 1866) -- valid -- Indian Smooth Snake
  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 olivacea Peters, 1854 -- invalid
  Coronella tessellata Laurenti, 1768 -- invalid
  Corucia zebrata Gray, 1855 -- valid -- Solomon Island Skink
  Corucia zebrata alfredschmidti Köhler, 1997 -- valid
  Corucia zebrata zebrata Gray, 1855 -- valid
  Cricosaura typica Gundlach and Peters in Peters, 1863 -- valid -- Cuban Night Lizard
  Crisantophis nevermanni (Dunn, 1937) -- valid -- Dunn's Road Guarder
  Crocodilurus amazonicus Spix, 1825 -- valid -- Crocodile Tegu
  Crotalus adamanteus Palisot de Beauvois, 1799 -- valid -- Eastern Diamondback Rattlesnake, Eastern Diamond-backed Rattlesnake
  Crotalus aquilus Klauber, 1952 -- valid -- Queretaran 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 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 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 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 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 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 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 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 armstrongi Campbell, 1979 -- invalid
  Crotalus triseriatus triseriatus (Wagler, 1830) -- invalid
  Crotalus tzabcan Klauber, 1952 -- valid -- Yucatan Neotropical 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 tornieri (Werner, 1908) -- valid -- Werner's Water Snake
  Cryophis hallbergi Bogert and Duellman, 1963 -- valid -- Culebra-de nebklina de Hallberg, Hallberg's Cloud Forest Snake
  Cryptoblepharus adamsi Horner, 2007 -- valid -- Adams's Snake-eyed Skink
  Cryptoblepharus africanus (Sternfeld, 1918) -- valid -- African Coral Rag Skink, East-African Snake-eyed Skink
  Cryptoblepharus ahli Mertens, 1928 -- valid -- Ahl's Snake-eyed Skink
  Cryptoblepharus aldabrae (Sternfeld, 1918) -- valid
  Cryptoblepharus ater (Boettger, 1913) -- valid -- Black Snake-eyed Skink
  Cryptoblepharus australis (Sternfeld, 1918) -- valid -- Inland Snake-eyed Skink
  Cryptoblepharus balinensis Barbour, 1911 -- valid
  Cryptoblepharus balinensis balinensis Barbour, 1911 -- valid
  Cryptoblepharus balinensis sumbawanus Mertens, 1928 -- valid
  Cryptoblepharus bitaeniatus (Boettger, 1913) -- valid
  Cryptoblepharus boutonii (Desjardin, 1831) -- valid -- Snake-eyed Skink
  Cryptoblepharus buchananii (Gray, 1838) -- valid -- Buchanan's Snake-eyed Skink
  Cryptoblepharus burdeni Dunn, 1927 -- valid
  Cryptoblepharus caudatus (Sternfeld, 1918) -- valid
  Cryptoblepharus cognatus (Boettger, 1881) -- valid -- Nosy Be Snake-eyed Skink
  Cryptoblepharus cursor Barbour, 1911 -- valid
  Cryptoblepharus cursor cursor Barbour, 1911 -- valid
  Cryptoblepharus cursor larsonae Horner, 2007 -- valid
  Cryptoblepharus cygnatus Horner, 2007 -- valid -- Swanson's Snake-eyed Skink
  Cryptoblepharus daedalos Horner, 2007 -- valid -- Dappled Snake-eyed Skink
  Cryptoblepharus egeriae (Boulenger, 1889) -- valid -- Christmas Island Blue-tailed Shinning-skink
  Cryptoblepharus eximius Girard, 1858 -- valid
  Cryptoblepharus exochus Horner, 2007 -- valid -- Noble Snake-eyed Skink
  Cryptoblepharus fuhni Covacevich and Ingram, 1978 -- valid -- Black-boulder Shinning-skink, Fuhn's Snake-eyed Skink
  Cryptoblepharus furvus Horner, 2007 -- valid
  Cryptoblepharus gloriosus (Stejneger, 1893) -- valid
  Cryptoblepharus gloriosus gloriosus (Stejneger, 1893) -- valid
  Cryptoblepharus gloriosus mayottensis Mertens, 1928 -- valid
  Cryptoblepharus gloriosus mohelicus Mertens, 1928 -- valid
  Cryptoblepharus gurrmul Horner, 2007 -- valid -- Arafura Snake-eyed Skink
  Cryptoblepharus juno Horner, 2007 -- valid -- Juno's Snake-eyed Skink
  Cryptoblepharus keiensis (Roux, 1910) -- valid
  Cryptoblepharus leschenault (Cocteau, 1832) -- valid
  Cryptoblepharus litoralis (Mertens, 1958) -- valid -- Coastal Snake-eyed Skink, Supralittoral Shinning-skink
  Cryptoblepharus litoralis horneri Wells and Wellington, 1985 -- valid -- Horner's Snake-eyed Skink
  Cryptoblepharus litoralis litoralis (Mertens, 1958) -- valid -- Coastal Snake-Eyed Skink
  Cryptoblepharus litoralis vicinus Horner, 2007 -- valid -- Papuan Coastal Snake-eyed Skink
  Cryptoblepharus megastictus Storr, 1976 -- valid -- Blotched Shinning-skink, Blotched Snake-eyed Skink
  Cryptoblepharus mertensi Horner, 2007 -- valid -- Mertens's Snake-eyed Skink
  Cryptoblepharus metallicus (Boulenger, 1887) -- valid -- Metallic Snake-eyed Skink
  Cryptoblepharus nigropunctatus (Hallowell, 1861) -- valid -- Snake-eyed Skink
  Cryptoblepharus novaeguineae Mertens, 1928 -- valid
  Cryptoblepharus novocaledonicus Mertens, 1928 -- valid
  Cryptoblepharus novohebridicus Mertens, 1928 -- valid
  Cryptoblepharus ochrus Horner, 2007 -- valid -- Pale Snake-eyed Skink
  Cryptoblepharus pannosus Horner, 2007 -- valid -- Ragged Snake-eyed Skink
  Cryptoblepharus plagiocephalus (Cocteau, 1836) -- valid -- Péron's Snake-eyed Skink, Callose-palmed Shinning-skink
  Cryptoblepharus poecilopleurus (Wiegmann, 1836) -- valid -- Oceanic Snake-eyed Skink, Mottled Snake-eyed Skink, Pacific Snake-eyed Skink
  Cryptoblepharus poecilopleurus paschalis Garman, 1908 -- valid
  Cryptoblepharus poecilopleurus poecilopleurus (Wiegmann, 1836) -- valid
  Cryptoblepharus pulcher (Sternfeld, 1918) -- valid -- Elegant Snake-eyed Skink
  Cryptoblepharus pulcher clarus (Storr, 1961) -- valid -- Bright Snake-eyed Skink
  Cryptoblepharus pulcher pulcher (Sternfeld, 1918) -- valid -- Elegant Snake-eyed Skink
  Cryptoblepharus quinquetaeniatus (Günther, 1874) -- valid -- Five-lined Snake-eyed Skink
  Cryptoblepharus renschi Mertens, 1928 -- valid
  Cryptoblepharus richardsi Horner, 2007 -- valid
  Cryptoblepharus ruber Börner and Schüttler, 1981 -- valid -- Tawny Snake-eyed Skink
  Cryptoblepharus rutilus (Peters, 1879) -- valid
  Cryptoblepharus schlegelianus Mertens, 1928 -- valid -- Schlegel's Snake-eyed Skink
  Cryptoblepharus tytthos Horner, 2007 -- valid -- Pygmy Snake-eyed Skink
  Cryptoblepharus ustulatus Horner, 2007 -- valid -- Russet Snake-eyed Skink
  Cryptoblepharus virgatus (Garman, 1901) -- valid -- Cream-striped Shinning-skink, Wall Skink, Striped Snake-Eyed Skink
  Cryptoblepharus voeltzkowi (Sternfeld, 1918) -- valid -- Voeltzkow's Snake-eyed Skink
  Cryptoblepharus walbergii Smith, 1849 -- invalid
  Cryptoblepharus wulbu Horner, 2007 -- valid -- Spangled Snake-eyed Skink
  Cryptoblepharus xenikos Horner, 2007 -- valid
  Cryptoblepharus yulensis Horner, 2007 -- valid
  Cryptoblepharus zoticus Horner, 2007 -- valid -- Agile Snake-eyed Skink
  Ctenotus agrestis Wilson and Couper, 1995 -- valid -- Mitchell Grass Ctenotus
  Ctenotus alacer Storr, 1970 -- valid -- Lively Ctenotus
  Ctenotus alleni Storr, 1974 -- valid -- Ajana Ctenotus
  Ctenotus allotropis Storr, 1981 -- valid -- Brown-blazed Wedgesnout Ctenotus
  Ctenotus angusticeps Storr, 1988 -- valid -- Northwestern Coastal Ctenotus, Little Leopard Ctenotus, Airlie Island Ctenotus
  Ctenotus aphrodite Ingram and Czechura, 1990 -- valid -- Oorida Ctenotus
  Ctenotus arcanus Czechura and Wombey, 1982 -- valid -- Arcane Ctenotus
  Ctenotus ariadnae Storr, 1969 -- valid -- Ariadna's Ctenotus
  Ctenotus arnhemensis Storr, 1981 -- valid -- Jabiluka Ctenotus
  Ctenotus astarte Czechura, 1986 -- valid -- Stony Downs Ctenotus
  Ctenotus astictus Horner, 1995 -- valid -- Arnhem Striped Ctenotus
  Ctenotus atlas Storr, 1969 -- valid -- Southern Mallee Ctenotus
  Ctenotus australis (Gray, 1838) -- valid -- Western Limestone Ctenotus
  Ctenotus borealis Horner and King, 1985 -- valid -- White-faced Ctenotus
  Ctenotus brachyonyx Storr, 1971 -- valid -- Short-clawed Ctenotus
  Ctenotus brevipes Storr, 1981 -- valid -- Short-footed Ctenotus
  Ctenotus brooksi (Loveridge, 1933) -- valid -- Wedgesnout Ctenotus
  Ctenotus brooksi aranda Storr, 1970 -- invalid
  Ctenotus brooksi euclae Storr, 1971 -- invalid
  Ctenotus brooksi iridis Storr, 1981 -- invalid
  Ctenotus burbidgei Storr, 1975 -- valid -- Plain-backed Kimberley Ctenotus
  Ctenotus calurus Storr, 1969 -- valid -- Blue-tailed Finesnout Ctenotus
  Ctenotus capricorni Storr, 1981 -- valid -- Capricorn Ctenotus
  Ctenotus catenifer Storr, 1974 -- valid -- Chain-striped South-west Ctenotus
  Ctenotus coggeri Sadlier, 1985 -- valid -- Brown-backed Ctenotus
  Ctenotus colletti (Boulenger, 1896) -- valid -- Collett's Skink, Buff-tailed Finesnout Ctenotus
  Ctenotus decaneurus Storr, 1970 -- valid -- Ten-lined Ctenotus
  Ctenotus decaneurus decaneurus Storr, 1970 -- valid
  Ctenotus decaneurus yampiensis Storr, 1975 -- valid -- Yampi Ctenotus
  Ctenotus delli Storr, 1974 -- valid -- Darling Range South-west Ctenotus
  Ctenotus dux Storr, 1969 -- valid -- Fine Side-lined Ctenotus
  Ctenotus ehmanni Storr, 1985 -- valid -- Brown-tailed Finesnout Ctenotus
  Ctenotus essingtonii (Gray, 1842) -- valid -- Lowlands Plain-backed Ctenotus
  Ctenotus eurydice Czechura and Wombey, 1982 -- valid -- Brown-backed Yellow-lined Ctenotus
  Ctenotus eutaenius Storr, 1981 -- valid -- Black-backed Yellow-lined Ctenotus
  Ctenotus fallens Storr, 1974 -- valid -- West-coast Laterite Ctenotus
  Ctenotus gagudju Sadlier, Wombey and Braithwaite, 1986 -- valid -- Magela Ctenotus
  Ctenotus gemmula Storr, 1974 -- valid -- Jewelled South-west Ctenotus
  Ctenotus grandis Storr, 1969 -- valid -- Grand Ctenotus
  Ctenotus grandis grandis Storr, 1969 -- valid
  Ctenotus grandis titan Storr, 1980 -- valid
  Ctenotus greeri Storr, 1979 -- valid -- Spotted-necked Ctenotus
  Ctenotus halysis Horner, 2009 -- valid -- Chained Ctenotus
  Ctenotus hanloni Storr, 1980 -- valid -- Nimble Ctenotus
  Ctenotus hebetior Storr, 1978 -- valid -- Stout Ctenotus
  Ctenotus hebetior hebetior Storr, 1978 -- valid
  Ctenotus hebetior schuettleri Börner, 1981 -- valid
  Ctenotus helenae Storr, 1969 -- valid -- Clay-soil Ctenotus
  Ctenotus hilli Storr, 1970 -- valid -- Top-end Lowlands Ctenotus
  Ctenotus iapetus Storr, 1975 -- valid -- North West Cape Ctenotus
  Ctenotus impar Storr, 1969 -- valid -- Odd-striped Ctenotus
  Ctenotus ingrami Czechura and Wombey, 1982 -- valid -- Unspotted Yellow-sided Ctenotus
  Ctenotus inornatus (Gray, 1845) -- valid -- Bar-shouldered Ctenotus
  Ctenotus joanae Storr, 1970 -- valid -- Black-soil Ctenotus
  Ctenotus kurnbudj Sadlier, Wombey and Braithwaite, 1986 -- valid -- Kurnbudj Ctenotus
  Ctenotus labillardieri (A. M. C. Duméril and Bibron, 1839) -- valid -- Common South-west Ctenotus
  Ctenotus lancelini Ford, 1969 -- valid -- Lancelin South-west Ctenotus
  Ctenotus lateralis Storr, 1978 -- valid -- Gravelly-soil Ctenotus
  Ctenotus leae (Boulenger, 1887) -- valid -- Orange-tailed Finesnout Ctenotus
  Ctenotus leonhardii (Sternfeld, 1919) -- valid -- Leonhardi's Ctenotus, Leonhardi's Skink
  Ctenotus maryani Aplin and Adams, 1998 -- valid -- Maryan's Ctenotus
  Ctenotus mastigura Storr, 1975 -- valid -- Whiptail Ctenotus
  Ctenotus mesotes Horner, 2009 -- valid -- Median-striped Ctenotus
  Ctenotus militaris Storr, 1975 -- valid -- Soldier Ctenotus
  Ctenotus mimetes Storr, 1969 -- valid -- Checker-sided Ctenotus
  Ctenotus monticola Storr, 1981 -- valid -- Atherton Ctenotus
  Ctenotus nasutus Storr, 1969 -- valid -- Nasute Finesnout Ctenotus
  Ctenotus nigrilineatus Storr, 1990 -- valid -- Pin-striped Finesnout Ctenotus
  Ctenotus nullum Ingram and Czechura, 1990 -- valid -- Nullum Ctenotus
  Ctenotus olympicus Hutchinson and Donnellan, 1999 -- valid -- Spotted Ctenotus
  Ctenotus ora Kay and Keogh, 2012 -- valid -- Coastal Plains Ctenotus
  Ctenotus orientalis Storr, 1971 -- valid -- Oriental Ctenotus
  Ctenotus pallescens Storr, 1970 -- valid -- North-western Wedgesnout Ctenotus
  Ctenotus pantherinus (Peters, 1866) -- valid -- Leopard Ctenotus
  Ctenotus pantherinus acripes Storr, 1975 -- valid
  Ctenotus pantherinus calx Storr, 1970 -- valid
  Ctenotus pantherinus ocellifer Storr, 1969 -- valid
  Ctenotus pantherinus pantherinus (Peters, 1866) -- valid
  Ctenotus piankai Storr, 1969 -- valid -- Course Sand Ctenotus
  Ctenotus piankai duricola Storr, 1975 -- invalid
  Ctenotus pulchellus Storr, 1978 -- valid -- Red-sided Ctenotus
  Ctenotus quattuordecimlineatus (Sternfeld, 1919) -- valid -- Fourteen-lined Ctenotus
  Ctenotus quinkan Ingram, 1979 -- valid -- Quinkan Ctenotus
  Ctenotus quirinus Horner, 2007 -- valid -- Arnhem Land Ctenotus
  Ctenotus rawlinsoni Ingram, 1979 -- valid -- Cape Heath Ctenotus
  Ctenotus regius Storr, 1971 -- valid -- Pale-rumped Ctenotus
  Ctenotus rimacolus Horner and Fisher, 1998 -- valid -- Crack-dwelling Ctenotus
  Ctenotus rimacolus camptris Horner and Fisher, 1998 -- valid
  Ctenotus rimacolus rimacolus Horner and Fisher, 1998 -- valid
  Ctenotus robustus Storr, 1970 -- valid -- Robust Ctenotus, Striped Skink
  Ctenotus rosarium Couper, Amey and Kutt, 2002 -- valid -- Beaded Ctenotus
  Ctenotus rubicundus Storr, 1978 -- valid -- Ruddy Ctenotus
  Ctenotus rufescens Storr, 1979 -- valid -- Rufous Finesnout Ctenotus
  Ctenotus rutilans Storr, 1980 -- valid -- Rusty-shouldered Ctenotus
  Ctenotus saxatilis Storr, 1970 -- valid -- Stony-soil Ctenotus
  Ctenotus schevilli (Loveridge, 1933) -- valid -- Black-soil Rises Ctenotus
  Ctenotus schomburgkii (Peters, 1863) -- valid -- Barred Wedge-snout Ctenotus
  Ctenotus septenarius King, Horner and Fyfe, 1988 -- valid -- Massive-gibber Ctenotus
  Ctenotus serotinus Czechura, 1986 -- valid -- Gravel-downs Ctenotus
  Ctenotus serventyi Storr, 1975 -- valid -- North-western Sandy-loam Ctenotus
  Ctenotus severus Storr, 1969 -- valid -- Stern Ctenotus
  Ctenotus spaldingi (Macleay, 1877) -- valid -- Straight-browed Ctenotus
  Ctenotus storri Rankin, 1978 -- valid -- Buff-striped Ctenotus
  Ctenotus strauchii (Boulenger, 1887) -- valid -- Eastern Barred Wedge-snout Ctenotus
  Ctenotus strauchii strauchii (Boulenger, 1887) -- valid
  Ctenotus strauchii varius Storr, 1981 -- valid
  Ctenotus striaticeps Storr, 1978 -- valid -- Stripe-headed Finesnout Ctenotus
  Ctenotus stuarti Horner, 1995 -- valid -- Stuart's Ctenotus
  Ctenotus taeniolatus (White, 1790) -- valid -- Copper-tailed Ctenotus, Copper-Tailed Skink
  Ctenotus tanamiensis Storr, 1970 -- valid -- Tanami Ctenotus
  Ctenotus tantillus Storr, 1975 -- valid -- Kimberley Wedge-snout Ctenotus
  Ctenotus terrareginae Ingram and Czechura, 1990 -- valid -- Hinchinbrook Ctenotus
  Ctenotus uber Storr, 1969 -- valid -- Spotted Ctenotus
  Ctenotus uber johnstonei Storr, 1980 -- valid
  Ctenotus uber uber Storr, 1969 -- valid
  Ctenotus vagus Horner, 2009 -- valid -- Uneven-striped Ctenotus
  Ctenotus vertebralis Rankin and Gillam, 1979 -- valid -- Scant-striped Ctenotus
  Ctenotus xenopleura Storr, 1981 -- valid -- Wide-striped Ctenotus
  Ctenotus youngsoni Storr, 1975 -- valid -- Shark Bay South-west Ctenotus
  Ctenotus zastictus Storr, 1984 -- valid -- Hamelin Pool Ctenotus
  Ctenotus zebrilla Storr, 1981 -- valid -- Southern Cape York Fine-snout Ctenotus
  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 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
  Cyclodomorphus branchialis (Günther, 1867) -- valid -- Common Slender Bluetongue, Gunther's Skink
  Cyclodomorphus casuarinae (A. M. C. Duméril and Bibron, 1839) -- valid -- She-oak Slender Bluetongue, She-oak Skink
  Cyclodomorphus celatus Shea and Miller, 1995 -- valid -- Western Slender Blue-tongue
  Cyclodomorphus maximus (Storr, 1976) -- valid -- Giant Slender Bluetongue
  Cyclodomorphus melanops (Stirling and Zietz, 1893) -- valid -- Samphire Slender Bluetongue
  Cyclodomorphus melanops elongatus (Werner, 1910) -- valid
  Cyclodomorphus melanops melanops (Stirling and Zietz, 1893) -- valid
  Cyclodomorphus melanops siticulosus Shea and Miller, 1995 -- valid
  Cyclodomorphus michaeli Wells and Wellington, 1984 -- valid -- Coastal She-Oak Slender Bluetongue
  Cyclodomorphus praealtus Shea, 1995 -- valid -- Alpine She-Oak Skink, Alpine She-Oak Slender Bluetongue
  Cyclodomorphus venustus Shea and Miller, 1995 -- valid -- Slender Bluetongue
  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
  Cyclotyphlops deharvengi in den Bosch and Ineich, 1994 -- valid -- Deharveng's Blind Snake
  Cylindrophiidae Fitzinger, 1843 -- valid -- Asian Pipe Snakes
  Cylindrophis Wagler, 1828 -- valid -- Asian Pipe Snakes
  Cylindrophis aruensis Boulenger, 1920 -- valid -- Aru Cylinder Snake
  Cylindrophis boulengeri Roux, 1911 -- valid -- Boulenger's Pipe Snake
  Cylindrophis burmanus M. A. Smith, 1943 -- valid -- Burmese Pipe-Snake
  Cylindrophis engkariensis Stuebing, 1994 -- valid
  Cylindrophis isolepis Boulenger, 1896 -- valid -- Jampea Island Pipe Snake
  Cylindrophis jodiae Amarasinghe, Ineich, Campbell and Hallermann, 2015 -- valid -- Jodi's Pipe-Snake
  Cylindrophis lineatus Blanford, 1881 -- valid -- Blanford's Pipe Snake
  Cylindrophis maculatus (Linnaeus, 1758) -- valid -- Ceylonese Cylinder Snake
  Cylindrophis melanotus Wagler, 1828 -- valid -- Black Pipe Snake
  Cylindrophis opisthorhodus Boulenger, 1897 -- valid -- Island Pipe Snake
  Cylindrophis ruffus (Laurenti, 1768) -- valid -- Red-tailed Pipe Snake, Red Cylinder Snake
  Cylindrophis ruffus burmanus M. A. Smith, 1943 -- invalid
  Cylindrophis subocularis Kiechbusch, Mecke, Hartmann, Ehrmantraut, O'Shea and Kaiser, 2016 -- valid
  Cylindrophis yamdena L. A. Smith and Sidik, 1998 -- valid -- Yamdena Pipe Snake
  Cynisca bifrontalis (Boulenger, 1906) -- valid -- French Congo Worm Lizard
  Cynisca degrysi (Loveridge, 1941) -- valid -- Sierra Leone Worm Lizard
  Cynisca feae (Boulenger, 1906) -- valid -- Ugly Worm Lizard
  Cynisca gansi Dunger, 1968 -- valid
  Cynisca haugi (Mocquard, 1904) -- valid -- Haug's Worm Lizard
  Cynisca kigomensis Dunger, 1968 -- valid
  Cynisca kraussi (Peters, 1878) -- valid -- Ghana Worm Lizard
  Cynisca leonina (F. Müller, 1885) -- valid -- Los Archipelago Worm Lizard
  Cynisca leucura (Duméril and Bibron, 1839) -- valid -- Coast Worm Lizard
  Cynisca liberiensis (Boulenger, 1878) -- valid -- Liberia Worm Lizard
  Cynisca muelleri (Strauch, 1881) -- valid
  Cynisca nigeriensis Dunger, 1968 -- valid
  Cynisca oligopholis (Boulenger, 1906) -- valid -- Cassine River Worm Lizard
  Cynisca rouxae Hahn, 1979 -- valid
  Cynisca schaeferi (Sternfeld, 1912) -- valid -- Cameroon Worm Lizard
  Cynisca senegalensis Gans, 1987 -- valid
  Cynisca williamsi Gans, 1987 -- valid
  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
  Dalmatolacerta oxycephala (Schlegel in Duméril and Bibron, 1839) -- valid -- Sharp-snouted Rock Lizard
  Dalophia angolensis Gans, 1976 -- valid
  Dalophia ellenbergeri (Angel, 1920) -- valid
  Dalophia gigantea (Peracca, 1903) -- valid
  Dalophia longicauda (Werner, 1915) -- valid
  Dalophia luluae (de Witte and Laurent, 1942) -- valid
  Dalophia pistillum (Boettger, 1895) -- valid -- Pestle-Tailed Worm Lizard
  Darevskia alpina (Darevsky, 1967) -- valid
  Darevskia armeniaca (Méhely, 1909) -- valid
  Darevskia bendimahiensis (Schmidtler, Eiselt and Darevsky, 1994) -- valid
  Darevskia bithynica (Méhely, 1909) -- valid
  Darevskia brauneri (Méhely, 1909) -- valid -- Brauner's Rock Lizard
  Darevskia brauneri brauneri (Méhely, 1909) -- valid
  Darevskia brauneri myusserica Doronin, 2011 -- valid
  Darevskia caucasica (Méhely, 1909) -- valid
  Darevskia caucasica caucasica (Méhely, 1909) -- valid
  Darevskia caucasica vedenica (Darevsky and Roitberg, 1999) -- valid
  Darevskia chlorogaster (Boulenger, 1908) -- valid -- Greenbelly Lizard
  Darevskia clarkorum (Darevsky and Vedmederja, 1977) -- valid
  Darevskia daghestanica (Darevsky, 1967) -- valid
  Darevskia dahli (Darevsky, 1957) -- valid
  Darevskia defilippii (Camerano, 1877) -- valid -- Elburs Lizard
  Darevskia derjugini (Nikolsky, 1898) -- valid
  Darevskia derjugini abchasica (Bischoff, 1982) -- valid
  Darevskia derjugini barani (Bischoff, 1982) -- valid
  Darevskia derjugini boehmei (Bischoff, 1982) -- valid
  Darevskia derjugini derjugini (Nikolsky, 1898) -- valid
  Darevskia derjugini orlowae (Bischoff, 1984) -- valid
  Darevskia derjugini silvatica (Bartenjew and Rjesnikowa, 1931) -- valid
  Darevskia dryada (Darevsky and Tuniyev, 1997) -- valid -- Charnali Lizard
  Darevskia lindholmi (Szczerbak, 1962) -- valid
  Darevskia mixta (Méhely, 1909) -- valid
  Darevskia parvula (Lantz and Cyrén, 1913) -- valid -- Red-bellied Lizard
  Darevskia parvula adjarica (Darevsky and Eiselt, 1980) -- valid
  Darevskia parvula parvula (Lantz and Cyrén, 1913) -- valid
  Darevskia pontica (Lantz and Cyrén, 1918) -- invalid -- Meadow Lizard, Pontic Lizard
  Darevskia portschinskii (Kessler, 1878) -- valid
  Darevskia portschinskii nigrita (Bakradse, 1976) -- valid
  Darevskia portschinskii portschinskii (Kessler, 1878) -- valid
  Darevskia praticola (Eversmann, 1834) -- valid -- Meadow Lizard
  Darevskia praticola hyrcanica Tuniyev, Doronin, Kidov and Tuniyev, 2011 -- valid
  Darevskia praticola loriensis Tuniyev, Doronin, Tuniyev, Aghasyan, Kidov and Aghasyan, 2013 -- valid
  Darevskia praticola pontica (Lantz and Cyrén, 1918) -- valid -- Pontic Lizard, Meadow Lizard
  Darevskia praticola praticola (Eversmann, 1834) -- valid
  Darevskia raddei (Boettger, 1892) -- valid -- Azerbaidzhan Lizard
  Darevskia raddei chaldoranensis Rastegar-Pouyani, Karamiani, Oraei, Khosrawani and Rastegar-Pouyani, 2011 -- valid
  Darevskia raddei nairensis (Darevsky, 1967) -- valid
  Darevskia raddei raddei (Boettger, 1892) -- valid
  Darevskia raddei vanensis (Eiselt, Schmidtler and Darevsky, 1993) -- valid
  Darevskia rostombekovi (Darevsky, 1957) -- invalid
  Darevskia rostombekowi (Darevsky, 1957) -- valid
  Darevskia rudis (Bedriaga, 1886) -- valid
  Darevskia rudis bischoffi (Böhme and Budak, 1977) -- valid
  Darevskia rudis bolkardaghica Arribas, Ilgaz, Kumlutas, Durmus, Avci and Uzüm, 2013 -- valid
  Darevskia rudis chechenica (Eiselt and Darevsky, 1991) -- valid
  Darevskia rudis macromaculata (Darevsky, 1967) -- valid
  Darevskia rudis mirabilis Arribas, Ilgaz, Kumlutas, Durmus, Avci and Uzüm, 2013 -- valid
  Darevskia rudis obscura (Lantz and Cyrén, 1936) -- valid
  Darevskia rudis rudis (Bedriaga, 1886) -- valid
  Darevskia rudis svanetica (Darevsky and Eiselt, 1980) -- valid
  Darevskia sapphirina (Schmidtler, Eiselt and Darevsky, 1994) -- valid
  Darevskia saxicola (Eversmann, 1834) -- valid
  Darevskia steineri (Eiselt, 1995) -- valid -- Steiner's Lizard
  Darevskia unisexualis (Darevsky, 1966) -- valid
  Darevskia uzzelli (Darevsky and Danielyan, 1977) -- valid
  Darevskia valentini (Boettger, 1892) -- valid -- Caucasian Rock Lizard, Valentin's Rock Lizard
  Darevskia valentini lantzicyreni (Darevsky and Eiselt, 1967) -- valid
  Darevskia valentini spitzenbergerae (Eiselt, Darevsky and Schmidtler, 1992) -- valid
  Darevskia valentini valentini (Boettger, 1892) -- valid
  Dasia griffini Taylor, 1915 -- valid -- Griffin's Dasia
  Dasia grisea (Gray, 1845) -- valid -- Gray Dasia, Big Tree Skink, Gray Tree Skink
  Dasia haliana (Nevill, 1887) -- valid -- Ceylonese Dasia
  Dasia johnsinghi Harikrishnan, Vasudevan, De Silva, Deepak, Kar, Naniwadekar, Lalremruata, Prasoona et al., 2012 -- valid -- Barred Tree Skink
  Dasia nicobarensis Biswas and Sanyal, 1977 -- valid -- Nicobar Tree Skink, Nicobar Dasia
  Dasia olivacea Gray, 1839 -- valid -- Olive Dasia, Olive Tree Skink
  Dasia semicincta (Peters, 1867) -- valid -- Peters' Dasia
  Dasia subcaerulea (Boulenger, 1891) -- valid -- Boulenger's Tree Skink, Boulenger's Dasia
  Dasia vittata (Edeling, 1865) -- valid -- Borneo Skink, Striped Tree Skink
  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 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 loveridgei Mertens, 1954 -- valid
  Dasypeltis scabra scabra (Linnaeus, 1758) -- valid
  Deinagkistrodon acutus (Günther, 1888) -- valid -- Chinese Moccasin, Hundred-pace Viper, Five-pacer Viper
  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 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 kopsteini Vogel and Van Rooijen, 2007 -- valid -- Kopstein's Bronzeback Snake
  Dendrelaphis levitoni Van Rooijen and Vogel, 2012 -- valid
  Dendrelaphis lorentzii (Lidth de Jeude, 1911) -- valid -- Lorentz River Treesnake
  Dendrelaphis luzonensis Leviton, 1961 -- 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 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
  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 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
  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
  Diaphorolepis laevis Werner, 1923 -- valid -- Colombian Frog-eating Snake
  Diaphorolepis wagneri Jan, 1863 -- valid -- Ecuador Frog-eating Snake
  Dicrodon guttulatum Duméril and Bibron, 1839 -- valid -- Peru Desert Tegu
  Dicrodon heterolepis (Tschudi, 1845) -- valid -- Ecuador Desert Tegu
  Dicrodon holmbergi Schmidt, 1957 -- valid -- Holmberg's Desert Tegu
  Dinarolacerta montenegrina Ljubisavljevic, Arribas, Dzukic and Carranza, 2007 -- valid -- Prokletije Rock Lizard
  Dinarolacerta mosorensis (Kolombatovic, 1886) -- valid -- Mosor Rock Lizard
  Diploglossus atitlanensis (Smith in Smith and Taylor, 1950) -- valid -- Atitlán Galliwasp
  Diploglossus bilobatus (O'Shaughnessy, 1874) -- valid -- O'Shaughnessy's Galliwasp
  Diploglossus delasagra (Cocteau, 1838) -- valid -- Cuban Pale-necked Galliwasp, Cuban Galliwasp
  Diploglossus delasagra nigropunctatus (Barbour and Shreve, 1937) -- invalid
  Diploglossus fasciatus (Gray, 1831) -- valid -- Banded Galliwasp
  Diploglossus garridoi Thomas and Hedges, 1998 -- valid -- Cuban Small-eared Galliwasp
  Diploglossus ingridae Werler and Campbell, 2004 -- invalid
  Diploglossus legnotus Campbell and Camarillo, 1994 -- invalid
  Diploglossus lessonae Peracca, 1890 -- valid -- Brazilian Galliwasp
  Diploglossus microlepis (Gray in Griffith, 1831) -- valid -- Small-lipped Galliwasp
  Diploglossus millepunctatus O'Shaughnessy, 1874 -- valid -- Dotted Galliwasp
  Diploglossus monotropis (Kuhl, 1820) -- valid
  Diploglossus montisilvestris Myers, 1973 -- valid -- Mountain Forest Galliwasp
  Diploglossus montisserrati Underwood, 1964 -- valid -- Montserrat Galliwasp
  Diploglossus nigropunctatus (Barbour and Shreve, 1937) -- valid -- Cuban Spotted Galliwasp
  Diploglossus owenii Duméril and Bibron, 1839 -- valid -- Owen's Galliwasp
  Diploglossus pleii Duméril and Bibron, 1839 -- valid -- Puerto Rican Galliwasp
  Diplometopon zarudnyi Nikolsky, 1907 -- valid -- Zarudnyi's Worm Lizard
  Dipsadinae Bonaparte, 1838 -- valid
  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 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
  Dipsas albifrons (Sauvage, 1884) -- valid -- Sauvage's Snail-eater
  Dipsas alternans (Fischer, 1885) -- valid -- Jan's Snail-eater
  Dipsas andiana (Boulenger, 1896) -- valid
  Dipsas articulata (Cope, 1868) -- valid -- American Snail-eater
  Dipsas baliomelas Harvey, 2008 -- valid
  Dipsas bicolor (Günther, 1895) -- valid -- Two-colored Snail-eater
  Dipsas brevifacies (Cope, 1866) -- valid -- Culebra-caracolera chata, Snail-eating Thirst Snake
  Dipsas bucephala (Shaw, 1802) -- valid -- Neotropical Snail-eater
  Dipsas catesbyi (Sentzen, 1796) -- valid -- Catesby's Snail-eater
  Dipsas chaparensis Reynolds and Foster, 1992 -- valid
  Dipsas copei (Günther, 1872) -- valid
  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 gracilis (Boulenger, 1902) -- valid -- Graceful Snail-eater
  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 nicholsi (Dunn, 1933) -- valid
  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 pratti (Boulenger, 1897) -- valid -- Pratt's Snail-eater
  Dipsas sanctijoannis (Boulenger, 1911) -- valid -- Tropical Snail-eater
  Dipsas sazimai Fernandes, Marques and Argôlo, 2010 -- valid
  Dipsas schunkii (Boulenger, 1908) -- valid -- Schunk's Snail-eater
  Dipsas temporalis (Werner, 1909) -- valid -- Temporal Snail-eater
  Dipsas tenuissima Taylor, 1954 -- valid -- Taylor's Snail-eater
  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
  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
  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 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
  Dopasia buettikoferi (Lidth de Jeude, 1905) -- valid -- Buettikofer's Glass Lizard
  Dopasia gracilis (Gray, 1845) -- valid -- Burmese Glass Lizard, Asian Glass Lizard, Indian Glass Snake
  Dopasia hainanensis (Yang, 1984) -- valid -- Hainan Glass Lizard
  Dopasia harti (Boulenger, 1899) -- valid -- Hart's Glass Lizard
  Dopasia ludovici (Mocquard, 1905) -- valid -- Ludovic's Glass Lizard
  Dopasia sokolovi (Darevsky and Nguyen-Van-Sang, 1983) -- valid -- Sokolov's Glass Lizard
  Dopasia wegneri (Mertens, 1959) -- valid -- Wegner's Glass Lizard
  Dracaena guianensis Daudin, 1801 -- valid -- Northern Caiman Lizard, Guyana Caiman Lizard
  Dracaena paraguayensis Amaral, 1950 -- valid -- Paraguay Caiman Lizard
  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 juliae copeae Parker, 1936 -- invalid
  Dryadosaura nordestina Rodrigues, Xavier Freire, Machado Pellegrino and Sites, 2005 -- valid
  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 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
  Drymobius chloroticus (Cope, 1886) -- valid -- Culebra-corredora verdosa, Green Highland Racer
  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 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
  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 shirana (Boulenger, 1894) -- valid -- Shire Slug Eater
  Duberria variegata (Peters, 1854) -- valid -- Variegated Slug Eater, Spotted Slug Eater
  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
  Echinosaura brachycephala Köhler, Böhme and Schmitz, 2004 -- valid
  Echinosaura horrida Boulenger, 1890 -- valid -- Rough Teiid
  Echinosaura orcesi Fritts, Almendáriz and Samec, 2002 -- valid
  Echinosaura palmeri Boulenger, 1911 -- valid -- Palmer's Teiid
  Echinosaura panamensis Barbour, 1924 -- valid -- Panama Teiid
  Echinosaura sulcarostrum Donnelly, MacCulloch, Ugarte and Kizirian, 2006 -- invalid
  Echis borkini Cherlin, 1990 -- valid
  Echis carinatus (Schneider, 1801) -- valid -- Saw-scaled Viper, Phoorsa
  Echis carinatus carinatus (Schneider, 1801) -- valid
  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
  Ecpleopus gaudichaudii Duméril and Bibron, 1839 -- valid
  Egernia cunninghami (Gray, 1832) -- valid -- Cunningham's Spiny-tailed Skink, Cunningham's Skink
  Egernia cygnitos Doughty, Kealley and Donnellan, 2011 -- valid -- Western Pilbara Spiny-tailed Skink
  Egernia depressa (Günther, 1875) -- valid -- Pygmy Spiny-tailed Skink
  Egernia douglasi Glauert, 1956 -- valid -- Kimberley Crevice-skink
  Egernia eos Doughty, Kealley and Donnellan, 2011 -- valid -- Central Pygmy Spiny-tailed Skink
  Egernia epsisolus Doughty, Kealley and Donnellan, 2011 -- valid -- Eastern Pilbara Spiny-tailed Skink
  Egernia formosa Fry, 1914 -- valid -- Goldfields Crevice-skink
  Egernia hosmeri Kinghorn, 1955 -- valid -- Hosmer's Spiny-tailed Skink
  Egernia kingii (Gray, 1838) -- valid -- King's Skink
  Egernia mcpheei Wells and Wellington, 1984 -- valid -- Eastern Crevice Skink, McPhee's Egernia
  Egernia napoleonis (Gray, 1838) -- valid -- South-western Crevice Skink
  Egernia pilbarensis Storr, 1978 -- valid -- Pilbara Crevice Skink
  Egernia richardi (Peters, 1869) -- valid -- Bright Crevice-skink, Dark Spinytail Skink
  Egernia rugosa De Vis, 1888 -- valid -- Yakka Skink
  Egernia saxatilis Cogger, 1960 -- valid -- Black Crevice-skink, Black Rock Skink
  Egernia saxatilis intermedia Cogger, 1960 -- valid
  Egernia saxatilis saxatilis Cogger, 1960 -- valid
  Egernia stokesii (Gray, 1845) -- valid -- Gidgee Spiny-tailed Skink, Gidgee Skink, Stoke's Skink
  Egernia stokesii aethiops Storr, 1978 -- invalid
  Egernia stokesii badia Storr, 1978 -- valid
  Egernia stokesii stokesii (Gray, 1845) -- valid
  Egernia stokesii zellingi De Vis, 1884 -- valid
  Egernia striolata (Peters, 1870) -- valid -- Tree-crevice Skink, Tree Skink
  Eirenis africanus (Boulenger, 1914) -- valid -- African Dwarf Snake
  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 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
  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 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 zoigeensis Huang, Ding, Burbrink, Yang, Huang, Ling, Chen and Zhang, 2012 -- valid -- Zoige Ratsnake
  Elapoidis H. Boie in F. Boie, 1827 -- valid
  Elapoidis fusca F. Boie in H. Boie, 1827 -- valid
  Elapomorphus lepidus Reinhardt, 1861 -- invalid
  Elapomorphus quinquelineatus (Raddi, 1820) -- valid -- Raddi's Lizard-eating Snake
  Elapomorphus spegazzinii Boulenger, 1913 -- invalid
  Elapomorphus spegazzinii suspectus Amaral, 1924 -- invalid
  Elapomorphus wuchereri Günther, 1861 -- valid -- Wucherer's Lizard-eating Snake
  Elapotinus picteti Jan, 1862 -- valid
  Elgaria cedrosensis (Fitch, 1934) -- valid -- Cedros Island Alligator Lizard
  Elgaria coerulea (Wiegmann, 1828) -- valid -- Northern Alligator Lizard
  Elgaria coerulea coerulea (Wiegmann, 1828) -- valid -- San Francisco Alligator Lizard
  Elgaria coerulea palmeri (Stejneger, 1893) -- valid -- Sierra Alligator Lizard
  Elgaria coerulea principis Baird and Girard, 1852 -- valid -- Northern Alligator Lizard, Northwestern Alligator Lizard
  Elgaria coerulea shastensis (Fitch, 1934) -- valid -- Shasta Alligator Lizard
  Elgaria kingii Gray, 1838 -- valid -- Arizona Alligator Lizard, Madrean Alligator Lizard
  Elgaria kingii ferruginea (Webb, 1962) -- valid
  Elgaria kingii kingii Gray, 1838 -- valid -- Madrean Alligator Lizard
  Elgaria kingii nobilis Baird and Girard, 1852 -- valid -- Arizona Alligator Lizard
  Elgaria multicarinata (Blainville, 1835) -- valid -- Southern Alligator Lizard, Lagarto escorpión del Sur
  Elgaria multicarinata ignava (Van Denburgh, 1905) -- valid -- San Martin Alligator Lizard
  Elgaria multicarinata multicarinata (Blainville, 1835) -- valid -- California Alligator Lizard
  Elgaria multicarinata nana (Fitch, 1934) -- valid -- Los Coronados Alligator Lizard
  Elgaria multicarinata scincicauda (Skilton, 1849) -- valid -- Oregon Alligator Lizard
  Elgaria multicarinata webbii (Baird, 1858) -- valid -- San Diego Alligator Lizard
  Elgaria panamintina (Stebbins, 1958) -- valid -- Panamint Alligator Lizard
  Elgaria paucicarinata (Fitch, 1934) -- valid -- Lagarto escorpión de San Lucas, San Lucan Alligator Lizard
  Elgaria velazquezi Grismer and Hollingsworth, 2001 -- valid -- Central Peninsular Alligator Lizard
  Emmochliophis fugleri Fritts and H. M. Smith, 1969 -- valid -- Pinchinda Snake
  Emmochliophis miops (Boulenger, 1898) -- valid
  Emoia adspersa (Steindachner, 1870) -- valid -- Dark-sided Skink, Dateline Emoia, Dark-sided Emoia, Steindachner's Emo Skink
  Emoia aenea Brown and Parker, 1985 -- valid -- Bronze Emo Skink
  Emoia aneityumensis Medway, 1974 -- valid -- Medway's Emo Skink
  Emoia arnoensis Brown and Marshall, 1953 -- valid -- Arno Skink, Arno Emoia, Emo Skink
  Emoia arnoensis arnoensis Brown and Marshall, 1953 -- valid
  Emoia arnoensis nauru Brown, 1991 -- valid
  Emoia atrocostata (Lesson, 1830) -- valid -- Littoral Skink, Littoral Emoia, Littoral Whiptail-skink, Mangrove Skink
  Emoia atrocostata atrocostata (Lesson, 1830) -- valid
  Emoia atrocostata australis Brown, 1991 -- valid
  Emoia atrocostata freycineti (A. M. C. Duméril and Bibron, 1839) -- valid
  Emoia aurulenta Brown and Parker, 1985 -- valid -- Brown's Emo Skink
  Emoia battersbyi (Procter, 1923) -- valid -- Battersby's Emo Skink
  Emoia baudini (A. M. C. Duméril and Bibron, 1839) -- valid -- Great Bight Cool-skink, Baudin's Skink
  Emoia bismarckensis Brown, 1983 -- valid
  Emoia boettgeri (Sternfeld, 1918) -- valid -- Boettger's Skink, Boettger's Emoia, Boettger's Emo Skink
  Emoia bogerti Brown, 1953 -- valid -- Bogert's Emo Skink
  Emoia brongersmai Brown, 1991 -- valid -- Brongersma's Emo Skink
  Emoia caeruleocauda (De Vis, 1892) -- valid -- Marianas Blue-tailed Skink, Pacific Blue-tailed Emoia, Marianas Blue-tailed Emoia, Pacific Bluetail Skink
  Emoia callisticta (Peters and Doria, 1878) -- valid
  Emoia campbelli Brown and Gibbons, 1986 -- valid -- Montane Emo Skink
  Emoia coggeri Brown, 1991 -- valid -- Cogger's Emo Skink
  Emoia concolor (A. H. A. Duméril in A. M. C. Duméril and A. H. A. Duméril, 1851) -- valid -- Fiji Green Emo Skink
  Emoia cyanogaster (Lesson, 1830) -- valid -- Blue-bellied Skink, Blue-bellied Emoia, Teal Emo Skink
  Emoia cyanura (Lesson, 1830) -- valid -- Azure-tailed Emoia, Azure-tailed skink, Copper-tailed Copper-striped Emoia, Copper-tailed Skink
  Emoia cyclops Brown, 1991 -- valid -- Cyclops Emo Skink
  Emoia digul Brown, 1991 -- valid -- Digul Emo Skink
  Emoia erronan Brown, 1991 -- valid -- Common Emo Skink
  Emoia flavigularis Schmidt, 1932 -- valid -- Yellow-throated Emo Skink
  Emoia guttata Brown and Allison, 1986 -- valid -- Allison's Emo Skink
  Emoia impar (Werner, 1898) -- valid -- Azure-tailed Skink, Blue-tailed Striped Emoia, Blue-tailed Striped Skink
  Emoia irianensis Brown, 1991 -- valid -- Irian Emo Skink
  Emoia isolata Brown, 1991 -- valid -- Isloated Emo Skink
  Emoia jakati (Kopstein, 1926) -- valid -- Jakati Emoia, Kopstein's Emoia, Kopstein's Skink, Kopstein's Emo Skink
  Emoia jamur Brown, 1991 -- valid -- Jamur Emo Skink
  Emoia kitcheneri How, Durrant, Smith and Saleh, 1998 -- valid
  Emoia klossi (Boulenger, 1914) -- valid -- Kloss' Emo Skink
  Emoia kordoana (Meyer, 1874) -- valid -- Meyer's Emo Skink
  Emoia kuekenthali (Boettger, 1895) -- valid -- Kuekenthal Emo Skink
  Emoia kuekenthali kuekenthali (Boettger, 1895) -- valid
  Emoia kuekenthali notomoluccense Brongersma, 1931 -- valid
  Emoia laobaoense Bourret, 1937 -- invalid -- Bourret's Emo Skink, Laobao Mangrove Skink
  Emoia laobaoensis Bourret, 1937 -- valid
  Emoia lawesi (Günther, 1874) -- invalid -- Günther's Emo Skink
  Emoia longicauda (Macleay, 1877) -- valid -- Shrub Whiptail-skink
  Emoia loveridgei Brown, 1953 -- valid -- Loveridge's Emo Skink
  Emoia loyaltiensis (Roux, 1913) -- valid -- Roux's Emo Skink
  Emoia maculata Brown, 1954 -- valid -- Spotted Emo Skink
  Emoia maxima Brown, 1953 -- valid -- Great Emo Skink
  Emoia mivarti (Boulenger, 1887) -- valid -- Mivart's Skink, Mivart's Emoia, Boulenger's Emo Skink
  Emoia mokolahi Zug, Ineich, Pregill and Hamilton, 2012 -- valid
  Emoia mokosariniveikau Zug and Ineich, 1995 -- valid
  Emoia montana Brown, 1991 -- valid -- Mountain Emo Skink
  Emoia nativitatis (Boulenger, 1887) -- valid -- Christmas Island Whiptail-skink, Forest Skink
  Emoia nigra (Jacquinot and Guichenot, 1853) -- valid -- Black Skink, Black Emoia, Black Emo Skink
  Emoia nigromarginata (Roux, 1913) -- valid -- Black-bordered Emo Skink
  Emoia obscura (De Jong, 1927) -- valid -- Obscure Emo Skink
  Emoia oribata Brown, 1953 -- valid
  Emoia oriva Zug, 2012 -- valid
  Emoia pallidiceps (De Vis, 1890) -- valid -- De Vis' Emo Skink
  Emoia pallidiceps mehelyi (Werner, 1899) -- valid
  Emoia pallidiceps pallidiceps (De Vis, 1890) -- valid
  Emoia paniai Brown, 1991 -- valid -- Coastal Emo Skink
  Emoia parkeri Brown, Pernetta and Watling, 1980 -- valid -- Parker's Emo Skink
  Emoia physicae (A. M. C. Duméril and Bibron, 1839) -- valid -- Slender Emo Skink
  Emoia physicae physicae (A. M. C. Duméril and Bibron, 1839) -- valid
  Emoia physicae purari Brown, 1991 -- valid
  Emoia physicina Brown and Parker, 1985 -- valid -- Five-toed Emo Skink
  Emoia ponapea Kiester, 1982 -- valid -- Ponape Forest Skink, Ponape Forest Emoia, Kiester's Emo Skink
  Emoia popei Brown, 1953 -- valid -- Pope's Emo Skink
  Emoia pseudocyanura Brown, 1991 -- valid -- False Bluetail Emo Skink
  Emoia pseudopallidiceps Brown, 1991 -- valid -- Arboreal Emo Skink
  Emoia reimschiisseli Tanner, 1950 -- valid -- Reimschisel's Emo Skink
  Emoia rennellensis Brown, 1991 -- valid -- Bright Emo Skink
  Emoia ruficauda Taylor, 1915 -- valid -- Redtail Emo Skink
  Emoia rufilabialis McCoy and Webber, 1984 -- valid -- Red-lipped Emo Skink
  Emoia samoensis (A. H. A. Duméril in A. M. C. Duméril and A. H. A. Duméril, 1851) -- valid -- Samoan Skink, Samoan Emoia, Samoa Skink
  Emoia sanfordi Schmidt and Burt, 1930 -- valid -- Sanford's Emo Skink
  Emoia schmidti Brown, 1954 -- valid -- Schmidt's Emo Skink
  Emoia similis Dunn, 1927 -- valid -- Dunn's Emo Skink
  Emoia slevini Brown and Falanruw, 1972 -- valid -- Slevin's Skink, Marianas Emoia, Slevin's Emoia, Slevin's Emo Skink
  Emoia sorex (Boettger, 1895) -- valid -- Sorex Emo Skink
  Emoia submetallica (Macleay, 1877) -- valid -- Madeay's Emo Skink
  Emoia taumakoensis McCoy and Webber, 1984 -- valid -- Taurnako Emo Skink
  Emoia tetrataenia (Boulenger, 1895) -- valid -- Four-striped Emo Skink
  Emoia tongana (Werner, 1899) -- valid
  Emoia tropidolepis (Boulenger, 1914) -- valid -- Forest Emo Skink
  Emoia trossula Brown and Gibbons, 1986 -- valid -- Fiji Barred Treeskink, Gibbons' Emo Skink
  Emoia tuitarere Zug, Hamilton and Austin, 2011 -- valid
  Emoia veracunda Brown, 1953 -- valid -- Tropical Emo Skink
  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
  Epicrates alvarezi Abalos, Baez and Nader, 1964 -- valid
  Epicrates assisi Machado, 1945 -- valid
  Epicrates cenchria (Linnaeus, 1758) -- valid -- Rainbow Boa
  Epicrates cenchria cenchria (Linnaeus, 1758) -- invalid
  Epicrates cenchria polylepis Amaral, 1935 -- invalid
  Epicrates crassus Cope, 1862 -- valid
  Epicrates maurus Gray, 1849 -- valid -- Rainbow Boa
  Epicrates maurus guyanensis Matz, 2005 -- invalid
  Epicrates maurus maurus Gray, 1849 -- invalid
  Eremias acutirostris (Boulenger, 1887) -- valid -- Point-snouted Racerunner
  Eremias afghanistanica Böhme and Scerbak, 1991 -- valid -- Afghan Racerunner
  Eremias andersoni Darevsky and Szczerbak, 1978 -- valid -- Anderson's Racerunner
  Eremias argus Peters, 1869 -- valid -- Mongolia Racerunner
  Eremias argus argus Peters, 1869 -- valid
  Eremias argus barbouri Schmidt, 1925 -- valid
  Eremias arguta (Pallas, 1773) -- valid -- Racerunner
  Eremias arguta arguta (Pallas, 1773) -- valid
  Eremias arguta darevskii Tsaruk, 1986 -- valid
  Eremias arguta deserti (Gmelin, 1789) -- valid
  Eremias arguta potanini Bedriaga, 1912 -- invalid
  Eremias arguta transcaucasica Darevsky, 1953 -- valid
  Eremias arguta uzbekistanica Tschernow, 1934 -- valid
  Eremias aria Anderson and Leviton, 1967 -- valid
  Eremias brenchleyi Günther, 1872 -- valid -- Ordos Racerunner
  Eremias buechneri Bedriaga, 1907 -- valid
  Eremias cholistanica Baig and Masroor, 2006 -- valid
  Eremias fasciata Blanford, 1874 -- valid -- Sistan Racerunner
  Eremias grammica (Lichtenstein, 1823) -- valid -- Reticulate Racerunner
  Eremias intermedia (Strauch, 1876) -- valid -- Aralo-Caspian Racerunner
  Eremias kavirensis Mozaffari and Parham, 2007 -- valid -- Maranjaab Racerunner
  Eremias kokshaaliensis Eremchenko and Panfilov, 1999 -- valid
  Eremias lalezharica Moravec, 1994 -- valid -- Lalehzar Racerunner
  Eremias lineolata (Nikolsky, 1897) -- valid -- Striped Racerunner
  Eremias montana N. Rastegar-Pouyani and E. Rastegar-Pouyani, 2001 -- valid -- Mountain Racerunner
  Eremias multiocellata Günther, 1872 -- valid -- Multi-ocellated Racerunner
  Eremias multiocellata bannikowi Szczerbak, 1973 -- invalid
  Eremias multiocellata kozlowi Bedriaga, 1907 -- valid
  Eremias multiocellata multiocellata Günther, 1872 -- valid
  Eremias multiocellata tsaganbogdensis Munkhabayar and Borkin, 2010 -- valid
  Eremias nigrocellata Nikolsky, 1896 -- valid -- Black-Ocellated Racerunner
  Eremias nikolskii Bedriaga in Nikolsky, 1905 -- valid -- Kirghiz Racerunner
  Eremias novo N. Rastegar-Pouyani and E. Rastegar-Pouyani, 2006 -- invalid
  Eremias papenfussi Mozaffari, Ahmadzadeh and Parham, 2011 -- valid -- Papenfuss's Racerunner
  Eremias persica Blanford, 1875 -- valid -- Aralo-Caspian Racerunner
  Eremias pleskei Nikolsky, 1905 -- valid -- Pleske's Racerunner
  Eremias przewalskii (Strauch, 1876) -- valid -- Gobi Racerunner
  Eremias przewalskii tuvensis Szczerbak, 1970 -- invalid
  Eremias quadrifrons (Strauch, 1876) -- valid -- Alachan Racerunner
  Eremias regeli Bedriaga in Nikolsky, 1905 -- valid
  Eremias scripta (Strauch, 1867) -- valid -- Sand Racerunner
  Eremias scripta lasdini (Zarewskij, 1918) -- valid
  Eremias scripta pherganensis Szczerbak and Washetko, 1973 -- valid
  Eremias scripta scripta (Strauch, 1867) -- valid
  Eremias strauchi Kessler, 1878 -- valid -- Strauch's Racerunner
  Eremias stummeri Wettstein, 1940 -- valid -- Stummer's Racerunner, Tien-Shan Racerunner
  Eremias suphani Basoglu and Hellmich, 1968 -- valid -- Suphan Racerunner, Basoglu's Racerunner
  Eremias szczerbaki Eremchenko, Panfilov and Zarinenko, 1992 -- valid -- Szczerbak's Racerunner
  Eremias velox (Pallas, 1771) -- valid -- Rapid Racerunner, Rapid Fringe-Toed Lizard, Central Asian Racerunner
  Eremias velox borkini Eremchenko and Panfilov, 1999 -- valid
  Eremias velox caucasia Lantz, 1928 -- valid
  Eremias velox roborowskii Bedriaga, 1912 -- invalid
  Eremias velox velox (Pallas, 1771) -- valid
  Eremias vermiculata Blanford, 1875 -- valid -- Central Asian Racerunner, Variegated Racerunner
  Eremias yarkandensis Blanford, 1875 -- valid -- Yarkend Racerunner, Yarkand Sandlizard
  Eremiascincus antoniorum (Smith, 1927) -- valid
  Eremiascincus brongersmai (Storr, 1972) -- valid -- Brown-sided bar-lipped Skink
  Eremiascincus butlerorum (Aplin, How and Boeadi, 1993) -- valid
  Eremiascincus douglasi (Storr, 1967) -- valid -- Orange-sided Bar-lipped Skink
  Eremiascincus emigrans (Lidth de Jeude, 1895) -- valid
  Eremiascincus emigrans emigrans (Lidth de Jeude, 1895) -- valid
  Eremiascincus emigrans wetariensis (Mertens, 1928) -- valid
  Eremiascincus fasciolatus (Günther, 1867) -- valid -- Narrow-banded Sand-swimmer, Thick-tailed Skink
  Eremiascincus intermedius (Sternfeld, 1919) -- valid -- Northern Narrow-banded Skink
  Eremiascincus isolepis (Boulenger, 1887) -- valid -- Northern Bar-lipped Skink, Short-legged Slender Skink
  Eremiascincus musivus Mecke, Doughty and Donnellan, 2009 -- valid -- Mosaic Desert Skink
  Eremiascincus pallidus (Günther, 1875) -- valid -- Western Sand-swimming Skink, Western Narrow-banded Skink
  Eremiascincus pardalis (Macleay, 1877) -- valid -- Lowlands Bar-lipped Skink
  Eremiascincus pardalis erro (Copland, 1946) -- invalid
  Eremiascincus phantasmus Mecke, Doughty and Donnellan, 2013 -- valid -- Ghost Skink
  Eremiascincus richardsonii (Gray, 1845) -- valid -- Broad-banded Sand-swimmer, Richardson's Skink, Keeled Skink
  Eremiascincus timorensis (Greer, 1990) -- valid
  Eroticoscincus graciloides (Lönnberg and Andersson, 1913) -- valid -- Elf Skink
  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 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 leucogaster (Jan, 1863) -- invalid
  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 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 steinbachi (Boulenger, 1905) -- invalid
  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
  Eryx borrii Lanza and Nistri, 2005 -- valid
  Eryx colubrinus (Linnaeus, 1758) -- valid
  Eryx colubrinus colubrinus (Linnaeus, 1758) -- valid
  Eryx colubrinus loveridgei Stull, 1932 -- valid
  Eryx conicus (Schneider, 1801) -- valid
  Eryx conicus brevis Deraniyagala, 1951 -- valid
  Eryx conicus conicus (Schneider, 1801) -- valid
  Eryx elegans (Gray, 1849) -- valid
  Eryx jaculus (Linnaeus, 1758) -- valid
  Eryx jaculus familiaris Eichwald, 1831 -- invalid
  Eryx jaculus jaculus (Linnaeus, 1758) -- invalid
  Eryx jaculus turcicus (Olivier, 1801) -- invalid
  Eryx jayakari Boulenger, 1888 -- valid
  Eryx johnii (Russell, 1801) -- valid
  Eryx johnii johnii (Russell, 1801) -- invalid
  Eryx johnii persicus Nikolsky, 1907 -- invalid
  Eryx miliaris (Pallas, 1773) -- valid
  Eryx miliaris miliaris (Pallas, 1773) -- valid
  Eryx miliaris nogaiorum Nikolsky, 1910 -- valid
  Eryx muelleri (Boulenger, 1892) -- valid
  Eryx muelleri muelleri (Boulenger, 1892) -- valid
  Eryx muelleri subniger Angel, 1938 -- valid
  Eryx somalicus Scortecci, 1939 -- valid
  Eryx tataricus (Lichtenstein, 1823) -- valid
  Eryx tataricus speciosus Carevskij, 1916 -- valid
  Eryx tataricus tataricus (Lichtenstein, 1823) -- valid
  Eryx tataricus vittatus Chernov, 1959 -- invalid
  Eryx whitakeri Das, 1991 -- valid
  Etheridgeum pulchrum (Werner, 1924) -- valid -- Sumatra Etheridge Snake
  Eugongylus albofasciolatus (Günther, 1872) -- valid -- White-banded Giant Skink, White-banded Mastiff Skink, White-striped Cape Skink
  Eugongylus mentovarius (Boettger, 1895) -- valid -- Odd-chinned Mastiff Skink, Odd-chinned Giant Skink
  Eugongylus rufescens (Shaw, 1802) -- valid -- Bar-lipped Sheen-skink
  Eugongylus sulaensis (Kopstein, 1927) -- valid -- Sula Skink
  Eugongylus unilineatus (de Rooij, 1915) -- valid
  Eulamprus heatwolei Wells and Wellington, 1983 -- valid -- Warm-temperate Water-skink
  Eulamprus kosciuskoi (Kinghorn, 1932) -- valid -- Alpine Meadow-skink, Alpine Water Skink
  Eulamprus leuraensis Wells and Wellington, 1983 -- valid -- Blue Mountains Swamp-skink, Blue Mountains Water Skink
  Eulamprus quoyii (A. M. C. Duméril and Bibron, 1839) -- valid -- Eastern Water-skink, Eastern Water Skink
  Eulamprus tympanum (Lönnberg and Andersson, 1915) -- valid -- Cool-temperate Water-skink, Highland Water Skink
  Eulamprus tympanum marnieae Hutchinson and Rawlinson, 1995 -- valid
  Eulamprus tympanum tympanum (Lönnberg and Andersson, 1915) -- valid
  Eumeces algeriensis Peters, 1864 -- valid -- Algerian Skink
  Eumeces algeriensis algeriensis Peters, 1864 -- valid
  Eumeces algeriensis meridionalis Domergue, 1901 -- valid
  Eumeces blythianus (Anderson, 1871) -- valid
  Eumeces cholistanensis Masroor, 2009 -- valid
  Eumeces indothalensis Khan and Khan, 1997 -- valid -- Striped Mole Skink
  Eumeces schneiderii (Daudin, 1802) -- valid -- Schneider's Skink, Gold Skink
  Eumeces schneiderii barani Kumlutas, Arikan, Ilgaz and Kaska, 2007 -- valid
  Eumeces schneiderii pavimentatus (Geoffroy de St. Hilaire, 1827) -- valid
  Eumeces schneiderii princeps (Eichwald, 1839) -- valid
  Eumeces schneiderii schneiderii (Daudin, 1802) -- valid
  Eumeces schneiderii zarudnyi (Nikolsky, 1900) -- valid
  Eumecia anchietae Bocage, 1870 -- valid -- Anchieta's Snake Skink, Western Serpentiform Skink
  Eumecia anchietae anchietae Bocage, 1870 -- valid -- Western Serpentiform Skink
  Eumecia anchietae major Laurent, 1964 -- valid -- Lunda Western Snake Skink
  Eumecia anchietae wittei Laurent, 1964 -- valid
  Eumecia johnstoni (Boulenger, 1897) -- valid
  Eunectes beniensis Dirksen, 2002 -- valid
  Eunectes deschauenseei Dunn and Conant, 1936 -- valid
  Eunectes murinus (Linnaeus, 1758) -- valid
  Eunectes notaeus Cope, 1862 -- valid
  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
  Eurylepis poonaensis (Sharma, 1970) -- valid -- Poona Skink
  Eurylepis taeniolata Blyth, 1854 -- valid -- Ribbon-Sided Skink, Alpine Punjab Skink, Yellow-bellied Mole Skink
  Eurylepis taeniolata arabica (Szczerbak, 1990) -- valid
  Eurylepis taeniolata parthianica (Szczerbak, 1990) -- valid
  Eurylepis taeniolata taeniolata Blyth, 1854 -- valid
  Euspondylus acutirostris (Peters, 1863) -- valid -- Sharp-snouted Sun Tegus
  Euspondylus auyanensis Myers, Rivas and Jadin, 2009 -- valid
  Euspondylus caideni Köhler, 2003 -- valid
  Euspondylus guentheri (O'Shaughnessy, 1881) -- valid -- Günther's Sun Tegus
  Euspondylus josyi Köhler, 2003 -- invalid
  Euspondylus maculatus Tschudi, 1845 -- valid -- Spotted Sun Tegus
  Euspondylus monsfumus Mijares-Urrutia, Señaris and Arends, 2001 -- valid
  Euspondylus nellycarrillae Köhler and Lehr, 2004 -- valid
  Euspondylus oreades Chávez, Siu-Ting, Duran and Venegas, 2011 -- invalid
  Euspondylus rahmi (De Grijs, 1936) -- invalid
  Euspondylus simonsii Boulenger, 1901 -- valid -- Simons' Sun Tegus
  Euspondylus spinalis (Boulenger, 1911) -- 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
  Eutropis alcalai Barley, Sanguila and Brown, 2021 -- valid
  Eutropis andamanensis (Smith, 1935) -- valid -- Andaman Islands Grassskink
  Eutropis beddomei (Jerdon, 1870) -- valid -- Beddome's Mabuya
  Eutropis bibronii (Gray, 1839) -- valid -- Seashore Skink
  Eutropis bontocensis (Taylor, 1923) -- valid -- Luzon Montane Mabouya
  Eutropis brevis (Günther, 1875) -- valid
  Eutropis carinata (Schneider, 1801) -- valid -- Keeled Indian Mabuya, Common Skink
  Eutropis chapaensis (Bourret, 1937) -- valid -- Sapa Mabuya
  Eutropis clivicola (Inger, Shaffer, Koshy and Bakde, 1984) -- valid -- Inger's Mabuya
  Eutropis cumingi (Brown and Alcala, 1980) -- valid -- Cuming's Mabuya
  Eutropis darevskii (Bobrov, 1992) -- valid -- Darevsky's Mabuya
  Eutropis dawsoni (Annandale, 1909) -- valid
  Eutropis dissimilis (Hallowell, 1857) -- valid -- Striped Grass Mabuya, Striped Grass Skink
  Eutropis englei (Taylor, 1925) -- valid -- Six-striped Mabouya
  Eutropis floweri (Taylor, 1950) -- valid
  Eutropis gansi (Das, 1991) -- invalid -- Gans' Grass Skink
  Eutropis grandis Howard, Gillespie, Riyanto and Iskandar, 2007 -- invalid
  Eutropis indeprensa (Brown and Alcala, 1980) -- valid -- Brown's Mabuya
  Eutropis innotata (Blanford, 1870) -- valid -- Blanford's Mabuya
  Eutropis longicaudata (Hallowell, 1857) -- valid -- Longtail Mabuya, Long-tailed Sun Skink
  Eutropis macrophthalma (Mausfeld and Böhme, 2002) -- valid
  Eutropis macularia (Blyth, 1853) -- valid -- Bronze Mabuya, Bronze Skink, Grass Sun Skink
  Eutropis macularia malcolmi (Taylor and Elbel, 1958) -- invalid
  Eutropis macularia postnasalis (Taylor and Elbel, 1958) -- invalid
  Eutropis macularia quadrifasciata (Taylor and Elbel, 1958) -- invalid
  Eutropis madaraszi (Méhely, 1897) -- valid -- Sri Lanka Bronze Skink
  Eutropis multicarinata (Gray, 1845) -- valid -- Many-keeled Mabuya
  Eutropis multifasciata (Kuhl, 1820) -- valid -- East Indian Brown Mabuya, Many-lined Sun Skink, Common Sun Skink, Javan Sun Skink, Brown Mabuya
  Eutropis multifasciata tjendikianensis (Mertens, 1956) -- invalid
  Eutropis nagarjuni (Sharma, 1969) -- valid -- Sharma's Mabuya, Nagarjuni Lizard
  Eutropis novemcarinata (Anderson, 1871) -- invalid
  Eutropis quadratilobus (Bauer and Günther, 1992) -- valid
  Eutropis quadricarinata (Boulenger, 1887) -- valid -- Beautiful Mabuya
  Eutropis rudis (Boulenger, 1887) -- valid -- Rough Mabuya
  Eutropis rugifera (Stoliczka, 1870) -- valid -- Rough-scaled Sun Skink
  Eutropis tammanna Das, de Silva and Austin, 2008 -- valid
  Eutropis trivittata (Hardwicke and Gray, 1827) -- valid -- Three-banded Mabuya
  Eutropis tytleri (Theobald, 1868) -- valid -- Tytler's Mabuya
  Eutropis vertebralis (Boulenger, 1887) -- valid
  Exila nigropalmata (Andersson, 1918) -- valid -- Black Mabuya
  Exiliboa placata Bogert, 1968 -- valid -- Boa-enana oaxaqueña
  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
  Feylinia currori Gray, 1845 -- valid -- Western Forest Feylinia
  Feylinia elegans (Hallowell, 1854) -- valid -- Elegant Feylinia
  Feylinia grandisquamis Müller, 1910 -- valid -- Large-scaled Burrowing Skink, Large-scaled Feylinia
  Feylinia macrolepis Boettger, 1887 -- valid
  Feylinia polylepis Bocage, 1887 -- valid -- Many-scaled Feylinia
  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 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
  Fojia bumui Greer and Simon, 1982 -- valid -- Fojia Skink
  Gallotia atlantica (Peters and Doria, 1882) -- valid -- Atlantic Lizard
  Gallotia atlantica atlantica (Peters and Doria, 1882) -- valid
  Gallotia atlantica mahoratae Bischoff, 1985 -- valid
  Gallotia auaritae Mateo, Garcia-Marquez, López-Jurado and Barahona, 2001 -- valid
  Gallotia bravoana Hutterer, 1985 -- valid
  Gallotia caesaris (Lehrs, 1914) -- valid
  Gallotia caesaris caesaris (Lehrs, 1914) -- valid
  Gallotia caesaris gomerae (Boettger and Müller, 1914) -- valid
  Gallotia galloti (Oudart, 1839) -- valid -- Gallot's Lizard
  Gallotia galloti eisentrauti Bischoff, 1982 -- valid
  Gallotia galloti galloti (Oudart, 1839) -- valid
  Gallotia galloti insulanagae Martin, 1985 -- valid
  Gallotia galloti palmae (Boettger and Müller, 1914) -- valid
  Gallotia intermedia Barrbadillo, Lacoba, Pérez-Mellado, Sancho and López-Jurado, 1999 -- valid -- Canarian Spotted Lizard, Lagarto canario moteado
  Gallotia simonyi (Steindachner, 1889) -- valid -- Simony's Lizard
  Gallotia simonyi machadoi López-Jurado, 1989 -- invalid
  Gallotia stehlini (Schenkel, 1901) -- valid
  Garthius chaseni (M. A. Smith, 1931) -- valid -- Mount Kinabalu Pit Viper, Chasen's Mountain Pitviper
  Gastropholis echinata (Cope, 1862) -- valid
  Gastropholis prasina Werner, 1904 -- valid -- Green Keel-bellied Lizard
  Gastropholis tropidopholis (Boulenger, 1916) -- valid
  Gastropholis vittata Fischer, 1886 -- valid -- Keelbelly Ground Lizard
  Geagras redimitus Cope, 1876 -- valid -- Culebra-minera de Tehuantepec, Tehuantepec Striped Snake
  Geocalamus acutus Sternfeld, 1912 -- valid -- Wedge-snouted Worm Lizard
  Geocalamus modestus Günther, 1880 -- valid -- Mpwapwa Wedge-snouted Worm Lizard
  Geomyersia coggeri Greer, 1982 -- valid -- Cogger's Island Skink
  Geomyersia glabra Greer and Parker, 1968 -- valid -- Greer's Island Skink
  Geophis anocularis Dunn, 1920 -- valid -- Culebra-minera de Sierra Mije, Sierra Mije Earth Snake
  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 fulvoguttatus Mertens, 1952 -- valid -- Mertens' Earth Snake
  Geophis godmani Boulenger, 1894 -- valid -- Godman's Earth Snake
  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 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 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 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 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 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 zeledoni Taylor, 1954 -- valid
  Geoscincus haraldmeieri (Böhme, 1976) -- valid
  Gerrhonotus farri Bryson and Graham, 2010 -- valid
  Gerrhonotus infernalis Baird, 1859 -- valid -- Texas Alligator Lizard
  Gerrhonotus liocephalus Wiegmann, 1828 -- valid -- Texas Alligator Lizard, Lagarto escorpión texano, Smooth-headed Alligator Lizard, Wiegmann's Alligator Lizard
  Gerrhonotus liocephalus austrinus Hartweg and Tihen, 1946 -- valid
  Gerrhonotus liocephalus liocephalus Wiegmann, 1828 -- valid -- Texas Alligator Lizard
  Gerrhonotus liocephalus loweryi Tihen, 1948 -- valid
  Gerrhonotus liocephalus taylori Tihen, 1954 -- invalid
  Gerrhonotus lugoi McCoy, 1970 -- valid -- Lagarto escorpión de Lugo, Lugo's Alligator Lizard
  Gerrhonotus ophiurus Cope, 1867 -- valid -- Snake Lizard
  Gerrhonotus parvus Knight and Scudday, 1985 -- valid -- Pygmy Alligator Lizard, Lagarto escorpión pigmeo
  Gerrhopilidae Vidal, Marin, Morini, Donnellan, Branch, Thomas et al., 2010 -- valid
  Gerrhopilus andamanensis (Stoliczka, 1871) -- valid -- Andaman Worm Snake
  Gerrhopilus ater (Schlegel, 1839) -- valid -- Black Blindsnake
  Gerrhopilus beddomii (Boulenger, 1890) -- valid -- Beddome's Worm Snake
  Gerrhopilus bisubocularis (Boettger, 1893) -- valid -- Western Java Worm Snake
  Gerrhopilus ceylonicus (M. A. Smith, 1943) -- valid -- Sri Lanka Worm Snake
  Gerrhopilus depressiceps (Sternfeld, 1913) -- valid -- Lowland Beaked Blindsnake
  Gerrhopilus floweri (Boulenger, 1899) -- valid -- Flower's Blind Snake, Flower's Worm Snake
  Gerrhopilus fredparkeri (Wallach, 1996) -- valid
  Gerrhopilus hades (Kraus, 2005) -- valid
  Gerrhopilus hedraeus (Savage, 1950) -- valid -- Negros Island Worm Snake
  Gerrhopilus inornatus (Boulenger, 1888) -- valid -- Montane Blindsnake
  Gerrhopilus mcdowelli (Wallach, 1996) -- valid
  Gerrhopilus mirus (Jan, 1860) -- valid -- Jan's Worm Snake
  Gerrhopilus oligolepis (Wall, 1909) -- valid -- Few-scaled Worm Snake
  Gerrhopilus tindalli (M. A. Smith, 1943) -- valid -- Nilgiri Hills Worm Snake
  Gerrhosauridae -- valid -- plated lizards
  Gerrhosaurus bulsi Laurent, 1954 -- valid -- Laurent's Plated Lizard
  Gerrhosaurus flavigularis Wiegmann, 1828 -- valid -- Yellow-throated Plated Lizard
  Gerrhosaurus major Duméril, 1851 -- invalid
  Gerrhosaurus multilineatus Bocage, 1866 -- valid -- Keeled Plated Lizard
  Gerrhosaurus nigrolineatus Hallowell, 1857 -- valid -- Black-lined Plated Lizard
  Gerrhosaurus skoogi Andersson, 1916 -- valid -- Desert Plated Lizard
  Gerrhosaurus typicus (Smith, 1837) -- valid -- Karoo Plated Lizard
  Gerrhosaurus validus Smith, 1849 -- invalid
  Glaphyromorphus clandestinus Hoskin and Couper, 2004 -- valid -- Mount Elliot Mulch-skink
  Glaphyromorphus cracens (Greer, 1985) -- valid -- Slender Mulch-skink
  Glaphyromorphus crassicaudum (A. M. C. Duméril and A. H. A. Duméril, 1851) -- valid -- Cape York Mulch-skink
  Glaphyromorphus darwiniensis (Storr, 1967) -- valid -- Northern Mulch Skink
  Glaphyromorphus darwiniensis arnhemicus (Storr, 1967) -- invalid
  Glaphyromorphus fuscicaudis (Greer, 1979) -- valid -- Brown-tailed Bar-lipped Skink, Grey-tailed Skink
  Glaphyromorphus mjobergi (Lönnberg and Andersson, 1915) -- valid -- Atherton Tableland Skink
  Glaphyromorphus nigricaudis (Macleay, 1877) -- valid -- Black-tailed Bar-lipped Skink
  Glaphyromorphus pumilus (Boulenger, 1887) -- valid -- Dwarf Mulch-skink
  Glaphyromorphus punctulatus (Peters, 1871) -- valid -- Fine-spotted Mulch-skink
  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
  Gomesophis brasiliensis (Gomes, 1918) -- valid -- Brazilian Burrowing Snake
  Gongylomorphus bojerii (Desjardin, 1831) -- valid -- Bojer's Skink
  Gongylomorphus bojerii borbonica Vinson, 1969 -- invalid
  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 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
  Gonyophis margaritatus (Peters, 1871) -- invalid
  Gonyosoma jansenii (Bleeker, 1859) -- valid -- Celebes Black-tailed Ratsnake
  Gonyosoma oxycephalum (F. Boie, 1827) -- valid -- Red-tailed Green Ratsnake
  Graciliscincus shonae Sadlier, 1987 -- valid -- Sadlier's Skink
  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
  Gymnophthalmidae Fitzinger, 1826 -- valid -- Spectacled Lizards
  Gymnophthalmus cryptus Hoogmoed, Cole and Ayarzaguena, 1992 -- valid -- Cryptic Spectacled Tegu
  Gymnophthalmus leucomystax Vanzolini and Carvalho, 1991 -- valid -- White Spectacied Tegu
  Gymnophthalmus lineatus (Linnaeus, 1758) -- valid
  Gymnophthalmus pleii Bocourt, 1881 -- valid -- Rough-scaled Tegulet
  Gymnophthalmus pleii luetkeni Bocourt, 1881 -- valid
  Gymnophthalmus pleii nesydrion Thomas, 1965 -- valid
  Gymnophthalmus pleii pleii Bocourt, 1881 -- valid
  Gymnophthalmus speciosus (Hallowell, 1861) -- valid -- Lagartija-anteojada dorada, Golden Tegulet, Golden Spectacled Tegu, Lagartija Dorada, Golden Spectacled Lizard
  Gymnophthalmus speciosus birdi Stuart, 1939 -- valid
  Gymnophthalmus speciosus speciosus (Hallowell, 1861) -- valid
  Gymnophthalmus speciosus sumichrasti (Cope, 1876) -- valid -- Lagartija de Sumichrast, Sumichrast's Golden Spectacled Lizard
  Gymnophthalmus underwoodi Grant, 1958 -- valid -- Smooth-scaled Tegulet, Underwood's Spectaded Tegu, Underwood's Spectacled Tegu
  Gymnophthalmus vanzoi Carvalho, 1999 -- valid
  Haackgreerius miopus (Greer and Haacke, 1982) -- valid -- Haacke-Greer's Skink
  Haitiophis anomalus (Peters, 1863) -- valid -- Hispaniola Racer
  Hakaria simonyi (Steindachner, 1899) -- valid
  Haldea Baird and Girard, 1853 -- valid
  Haldea striatula (Linnaeus, 1766) -- valid -- Rough Earthsnake, Rough Earth Snake
  Hapsidophrys lineatus Fischer, 1856 -- valid -- Black-lined Green Snake
  Hapsidophrys principis (Boulenger, 1906) -- valid
  Harrisoniascincus zia (Ingram and Ehmann, 1981) -- valid -- Rainforest Cool-skink, Beech Skink
  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 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 yacu Rossman and Dixon, 1975 -- valid -- Peru Keelback
  Helicopsoides typicus Mocquard, 1890 -- invalid
  Heliobolus lugubris (Smith, 1838) -- valid -- Bushveld Lizard, Mourning Racerunner, Black and Yellow Sand Lizard
  Heliobolus neumanni (Tornier, 1905) -- valid -- Neumann's Sand Lizard
  Heliobolus nitidus (Günther, 1872) -- valid -- Glittering Sand Lizard
  Heliobolus nitidus garambensis (Schmidt, 1919) -- valid
  Heliobolus nitidus nitidus (Günther, 1872) -- valid
  Heliobolus nitidus quadrinasalis (Chabanaud, 1918) -- valid
  Heliobolus spekii (Günther, 1872) -- valid -- Speke's Sand Lizard
  Heliobolus spekii scorteccii (Arillo, Balletto and Spanò, 1965) -- valid
  Heliobolus spekii sextaeniata (Stejneger, 1894) -- valid
  Heliobolus spekii spekii (Günther, 1872) -- valid
  Hellenolacerta graeca (Bedriaga, 1886) -- valid -- Greek Rock Lizard
  Helophis de Witte and Laurent, 1942 -- valid
  Helophis schoutedeni (de Witte, 1942) -- valid -- Schouteden's Sun Snake
  Hemerophis socotrae (Günther, 1881) -- valid -- Socotran Racer
  Hemicordylus capensis (Smith, 1838) -- valid -- Cape Cliff Lizard, Graceful Crag Lizard
  Hemicordylus nebulosus (Mouton and Van Wyk, 1995) -- valid -- Dwarf Cliff Lizard, Dwarf Crag Lizard, Cloudy Crag Lizard, Dark Crag Lizard
  Hemiergis decresiensis (Cuvier, 1829) -- valid -- Three-toed Earless Skink
  Hemiergis decresiensis continentis Copland, 1946 -- valid
  Hemiergis decresiensis decresiensis (Cuvier, 1829) -- valid
  Hemiergis gracilipes (Steindachner, 1870) -- valid -- South-western Mulch-skink
  Hemiergis initialis (Werner, 1910) -- valid -- Southwestern Earless Skink
  Hemiergis initialis brookeri Storr, 1975 -- valid
  Hemiergis initialis initialis (Werner, 1910) -- valid
  Hemiergis millewae Coventry, 1976 -- valid -- Triodia Earless Skink
  Hemiergis peronii (Gray, 1831) -- valid -- Lowlands Earless Skink
  Hemiergis quadrilineatus (A. M. C. Duméril and Bibron, 1839) -- valid -- Two-toed Earless Skink
  Hemiergis talbingoensis Copland, 1946 -- valid -- Victoria Three-toed Earless Skink
  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
  Hemisphaeriodon gerrardii (Gray, 1845) -- invalid
  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
  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
  Heterodactylus imbricatus Spix, 1825 -- valid -- Rio de Janeiro Teiid
  Heterodactylus lundii Reinhardt and Lütken, 1862 -- valid -- Lund's Teiid
  Heterodactylus septentrionalis Rodrigues, de Freitas and Silva, 2009 -- valid
  Heterodon gloydi Edgren, 1952 -- valid -- Dusty Hognose Snake, Dusty Hog-nosed Snake
  Heterodon kennerlyi Kennicott, 1860 -- valid -- Mexican Hog-nosed Snake, Mexican Hog-nose Snake
  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 platirhinos Latreille, 1801 -- valid -- Eastern Hog-nosed Snake, Eastern Hognose Snake
  Heterodon simus (Linnaeus, 1766) -- valid -- Southern Hog-nosed Snake, Southern Hognose Snake
  Heteroliodon fohy Glaw, Vences and Nussbaum, 2005 -- valid
  Heteroliodon lava Nussbaum and Raxworthy, 2000 -- valid
  Heteroliodon occipitalis (Boulenger, 1896) -- valid
  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
  Holaspis guentheri Gray, 1863 -- valid -- Sawtail Lizard
  Holaspis laevis Werner, 1896 -- valid -- Eastern Serrate-toed Tree Lizard
  Holcosus anomalus (Echternacht, 1977) -- valid -- Echternacht's Ameiva
  Holcosus bridgesii Cope, 1869 -- valid -- Bridges' Ameiva
  Holcosus chaitzami (Stuart, 1942) -- valid -- Chaitzam's Ameiva, Ameiva de Chaitzam
  Holcosus festivus (Lichtenstein and Martens in Lichtenstein, 1856) -- valid -- Ameiva Festiva, Middle American Ameiva, Ameiva centroamericana
  Holcosus festivus edwardsii (Bocourt, 1873) -- valid -- Edward's Middle American Ameiva, Lagartija Parda
  Holcosus festivus festivus (Lichtenstein and Martens in Lichtenstein, 1856) -- valid
  Holcosus festivus occidentalis Taylor, 1956 -- valid
  Holcosus leptophrys (Cope, 1893) -- valid -- Delicate Ameiva
  Holcosus niceforoi (Dunn, 1943) -- valid
  Holcosus orcesi (Peters, 1964) -- valid -- Peters' Ameiva
  Holcosus quadrilineatus (Hallowell, 1861) -- valid -- Four-lined Ameiva
  Holcosus septemlineatus (Duméril, 1851) -- valid -- Seven-lined Ameiva
  Holcosus undulatus (Wiegmann, 1834) -- valid -- Rainbow Ameiva, Ameiva metálica o arcoiris, Lagartija Metálica
  Holcosus undulatus amphigrammus (H. Smith and Laufe, 1945) -- invalid
  Holcosus undulatus dextrus (H. Smith and Laufe, 1946) -- valid
  Holcosus undulatus gaigeae (H. Smith and Laufe, 1946) -- invalid
  Holcosus undulatus hartwegi (H. Smith, 1940) -- invalid
  Holcosus undulatus miadis (Barbour and Loveridge, 1929) -- valid
  Holcosus undulatus parvus (Barbour and Noble, 1915) -- invalid
  Holcosus undulatus podarga (H. Smith and Laufe, 1946) -- invalid
  Holcosus undulatus pulcher (Hallowell, 1861) -- invalid
  Holcosus undulatus sinistra (H. Smith and Laufe, 1946) -- invalid
  Holcosus undulatus stuarti (H. Smith, 1940) -- invalid
  Holcosus undulatus thomasi (H. Smith and Laufe, 1946) -- invalid
  Holcosus undulatus undulatus (Wiegmann, 1834) -- valid
  Hologerrhum Günther, 1858 -- valid
  Hologerrhum dermali Brown, Leviton, Ferner and Sison, 2001 -- valid
  Hologerrhum philippinum Günther, 1858 -- valid -- Philippine Stripe-lipped Snake
  Hormonotus modestus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Uganda House Snake, Yellow Forest Snake
  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
  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
  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
  Hydrus piscator Schneider, 1799 -- 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
  Hypsiglena affinis Boulenger, 1894 -- valid -- Rio Grande de Santiago 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 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 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 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 torquata (Günther, 1860) -- invalid
  Hypsiglena torquata tortugaensis Tanner, 1946 -- invalid
  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
  Iberolacerta aranica (Arribas, 1993) -- valid -- Aran Rock Lizard
  Iberolacerta aurelioi (Arribas, 1994) -- valid -- Aurelio's Rock Lizard
  Iberolacerta bonnali (Lantz, 1927) -- valid -- Pyrenean Rock Lizard
  Iberolacerta cyreni (Müller and Hellmich, 1937) -- valid -- Cyren's Rock Lizard
  Iberolacerta cyreni castilliana (Arribas, 1996) -- valid
  Iberolacerta cyreni cyreni (Müller and Hellmich, 1937) -- valid
  Iberolacerta galani Arribas, Carranza and Odierna, 2006 -- valid -- Galan's Rock Lizard
  Iberolacerta horvathi (Méhely, 1904) -- valid -- Horvath's Rock Lizard
  Iberolacerta martinezricai (Arribas, 1996) -- valid -- Martinez-Rica's Rock Lizard
  Iberolacerta monticola (Boulenger, 1905) -- valid -- Iberian Mountain Lizard
  Iberolacerta monticola cantabrica (Mertens, 1929) -- valid
  Iberolacerta monticola monticola (Boulenger, 1905) -- valid
  Ichnotropis bivittata Bocage, 1866 -- valid -- Angolan Rough-scaled Lizard
  Ichnotropis bivittata bivittata Bocage, 1866 -- valid
  Ichnotropis bivittata pallida Laurent, 1964 -- valid
  Ichnotropis capensis (Smith, 1838) -- valid -- Ornate Rough-scaled Lizard, Cape Rough-scaled Lizard, Smith's Rough-scaled Sand Lizard
  Ichnotropis capensis capensis (A. Smith, 1838) -- valid
  Ichnotropis capensis nigrescens Laurent, 1952 -- valid
  Ichnotropis chapini Schmidt, 1919 -- valid
  Ichnotropis grandiceps Broadley, 1967 -- valid -- Caprivi Rough-scaled Lizard
  Ichnotropis microlepidota Marx, 1956 -- valid -- Marx's Rough-scaled Lizard
  Ichnotropis tanganicana Boulenger, 1917 -- valid -- Tanzanian Rough-scaled Lizard
  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 inornatus (Boulenger, 1896) -- valid -- Western Tree Snake
  Imantodes lentiferus (Cope, 1894) -- valid -- Amazon Basin Tree Snake
  Imantodes phantasma Myers, 1982 -- valid -- Phantasma Tree Snake
  Imantodes tenuissimus (Cope, 1867) -- valid -- Culebra-cordelilla yucateca, Yucatán Blunthead Snake
  Insulasaurus arborens (Taylor, 1917) -- valid -- Negros Sphenomorphus
  Insulasaurus traanorum (Linkem, Diesmos and Brown, 2010) -- valid
  Insulasaurus victoria (Brown and Alcala, 1980) -- valid
  Insulasaurus wrighti Taylor, 1925 -- valid -- Wright's Sphenomorphus
  Inyoka swazicus (Schaefer, 1970) -- valid -- Swazi Rock Snake, Swaziland House Snake
  Iphisa elegans Gray, 1851 -- valid -- Glossy Shade Lizard
  Iphisa elegans elegans Gray, 1851 -- valid
  Iphisa elegans soinii Dixon, 1974 -- valid
  Iranolacerta brandtii (De Filippi, 1863) -- valid -- Brandt's Persian Lizard
  Iranolacerta brandtii brandtii (De Filippi, 1863) -- valid
  Iranolacerta brandtii esfahanica (Nilson, N. Rastegar-Pouyani, E. Rastegar-Pouyani and C. Andrén, 2003) -- valid
  Iranolacerta zagrosica (N. Rastegar-Pouyani and Nilson, 1998) -- valid -- Zagros Mountains Lacerta
  Isanophis David, Pauwels, T. Q. Nguyen and Vogel, 2015 -- valid
  Isanophis boonsongi (Taylor and Elbel, 1958) -- valid -- Boomsong's Stream Snake
  Isopachys anguinoides (Boulenger, 1914) -- valid -- Heyer's Isopachys, Thai Snake Skink
  Isopachys borealis Lang and Böhme, 1990 -- valid -- Lang's Isopachys
  Isopachys gyldenstolpei Lönnberg, 1916 -- valid -- Gyldenstolpe's Isopachys, Gyldenstolpe's Snake Skink
  Isopachys roulei (Angel, 1920) -- valid -- Chonburi Snake Skink
  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
  Janetaescincus braueri (Boettger, 1896) -- valid
  Janetaescincus veseyfitzgeraldi (Parker, 1947) -- valid
  Jarujinia bipedalis Chan-Ard, Makchai and Cota, 2011 -- valid
  Kaestlea beddomii (Boulenger, 1887) -- valid
  Kaestlea bilineata (Gray, 1846) -- valid -- Two-lined Ground Skink
  Kaestlea laterimaculata (Boulenger, 1887) -- valid -- Side-spotted Skink
  Kaestlea palnica (Boettger, 1892) -- valid
  Kaestlea travancorica (Beddome, 1870) -- valid -- Travancore Ground Skink
  Kaieteurosaurus hindsi Kok, 2005 -- valid
  Kanakysaurus viviparus Sadlier and Bauer, Smith and Whitaker, 2004 -- valid
  Kanakysaurus zebratus Sadlier and Bauer, Smith and Whitaker, 2008 -- valid
  Karusasaurus jordani (Parker, 1936) -- valid -- Jordan's Girdled Lizard, Namibian Girdled Lizard
  Karusasaurus polyzonus (Smith, 1838) -- valid -- Southern Karusa Lizard, Karoo Girdled Lizard
  Katophis plumbea Macleay, 1877 -- invalid
  Kentropyx altamazonica (Cope, 1875) -- valid -- Cocha Whiptail
  Kentropyx borckiana (Peters, 1869) -- valid -- Guyana Whiptail, Guyana Kentropyx
  Kentropyx calcarata Spix, 1825 -- valid -- Striped Forest Whiptail
  Kentropyx lagartija Gallardo, 1962 -- valid
  Kentropyx paulensis (Boettger, 1893) -- valid -- Boettger's Kentropyx
  Kentropyx pelviceps (Cope, 1868) -- valid -- Forest Whiptail
  Kentropyx striata (Daudin, 1802) -- valid -- Striped Whiptail, Striped Kentropyx
  Kentropyx vanzoi Gallagher and Dixon, 1980 -- valid -- Gallagher's Kentropyx
  Kentropyx viridistriga (Boulenger, 1894) -- valid -- Green Kentropyx
  Lacerta agilis Linnaeus, 1758 -- valid -- Sand Lizard
  Lacerta agilis agilis Linnaeus, 1758 -- valid
  Lacerta agilis argus (Laurenti, 1768) -- valid
  Lacerta agilis boemica Suchow, 1929 -- valid
  Lacerta agilis bosnica Schreiber, 1912 -- valid
  Lacerta agilis brevicaudata Peters, 1958 -- valid
  Lacerta agilis chersonensis Andrzejowski, 1832 -- valid
  Lacerta agilis exigua Eichwald, 1831 -- valid
  Lacerta agilis grusinica Peters, 1960 -- valid
  Lacerta agilis ioriensis Peters and Muskhelischwili, 1968 -- valid
  Lacerta agilis mzymtensis Tuniyev and Tuniyev, 2008 -- valid
  Lacerta bilineata Daudin, 1802 -- valid -- Western Green Lizard, Western Green Lacerta
  Lacerta bilineata bilineata Daudin, 1802 -- valid
  Lacerta bilineata chloronota Rafinesque-Schmaltz, 1810 -- valid
  Lacerta bilineata chlorosecunda Taddei, 1950 -- invalid
  Lacerta bilineata fejervaryi Vasvary, 1926 -- invalid
  Lacerta danfordi pentanisiensis Wettstein, 1964 -- invalid
  Lacerta media Lantz and Cyrén, 1920 -- valid
  Lacerta media ciliciensis Schmidtler, 1975 -- valid
  Lacerta media isaurica Schmidtler, 1975 -- valid
  Lacerta media israelica Peters, 1964 -- valid
  Lacerta media media Lantz and Cyrén, 1920 -- valid
  Lacerta media wolterstorffi Mertens, 1922 -- valid
  Lacerta mostoufii Baloutch, 1976 -- invalid
  Lacerta pamphylica Schmidtler, 1975 -- valid
  Lacerta schreiberi Bedriaga, 1878 -- valid -- Iberian Emerald Lizard
  Lacerta strigata Eichwald, 1831 -- valid -- Caucusus Emerald Lizard, Five-Streaked Lizard, Caspian Green Lizard
  Lacerta trilineata Bedriaga, 1886 -- valid -- Balkan Emerald Lizard, Balkan Green Lizard
  Lacerta trilineata hansschweizeri Müller, 1935 -- valid
  Lacerta trilineata major Boulenger, 1887 -- valid
  Lacerta trilineata polylepidota Wettstein, 1952 -- valid
  Lacerta trilineata trilineata Bedriaga, 1886 -- valid
  Lacerta viridis (Laurenti, 1768) -- valid -- European Green Lizard, Eastern Green Lizard
  Lacerta viridis guentherpetersi Rykena, Nettmann and Mayer, 2001 -- valid
  Lacerta viridis infrapunctata Schmidtler, 1986 -- invalid
  Lacerta viridis meridionalis Cyrén, 1933 -- valid
  Lacerta viridis paphlagonica Schmidtler, 1986 -- invalid
  Lacerta viridis viridis (Laurenti, 1768) -- valid
  Lacerta vivipara sachalinensis Pereleshin and Terentjev, 1963 -- invalid
  Lacertaspis chriswildi (Böhme and Schmitz, 1996) -- valid -- Chris-Wild's Snake-eyed Skink
  Lacertaspis gemmiventris (Sjöstedt, 1897) -- valid -- Sjostedt's Five-toed Skink
  Lacertaspis lepesmei (Angel, 1940) -- valid -- Angel's Five-toed Skink
  Lacertaspis reichenowii (Peters, 1874) -- valid
  Lacertaspis rohdei (Müller, 1910) -- valid -- Gaboon Lidless Skink
  Lacertidae -- valid -- Old World Runners, Lacertid Lizards
  Lacertoides pardalis Sadlier, Shea and Bauer, 1997 -- valid
  Lachesis acrochorda (Garcia, 1896) -- valid
  Lachesis melanocephala Solórzano and Cerdas, 1986 -- valid -- Black-headed Bushmaster
  Lachesis muta (Linnaeus, 1766) -- valid -- Bushmaster, South American Bushmaster
  Lachesis stenophrys Cope, 1876 -- valid -- Central American Bushmaster
  Lamprolepis leucosticta (Müller, 1923) -- valid
  Lamprolepis nieuwenhuisii (Lidth de Jeude, 1905) -- valid -- Nieuwenhuis' Skink
  Lamprolepis smaragdina (Lesson, 1829) -- valid -- Green Treeskink, Green Tree Skink, Emerald Skink
  Lamprolepis smaragdina moluccarum (Barbour, 1911) -- valid
  Lamprolepis smaragdina philippinica (Mertens, 1928) -- valid
  Lamprolepis smaragdina smaragdina (Lesson, 1829) -- valid
  Lamprolepis smaragdina viridipuncta (Lesson, 1830) -- valid
  Lamprolepis vyneri (Shelford, 1905) -- invalid
  Lampropeltis alterna (Brown, 1901) -- valid -- Gray-banded Kingsnake, Culebra-real bandas grises, Grey-banded Kingsnake
  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 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 nigra (Yarrow, 1882) -- valid -- Black Kingsnake, Eastern Black Kingsnake
  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 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 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
  Lamprophiidae Fitzinger, 1843 -- valid
  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
  Lampropholis adonis Ingram, 1991 -- valid -- Diamond Shielded Sunskink
  Lampropholis amicula Ingram and Rawlinson, 1981 -- valid -- Friendly Sunskink
  Lampropholis caligula Ingram and Rawlinson, 1981 -- valid -- Montane Sunskink
  Lampropholis coggeri Ingram, 1991 -- valid -- Rainforest Sunskink
  Lampropholis colossus Ingram, 1991 -- valid -- Bunya Sunskink
  Lampropholis couperi Ingram, 1991 -- valid -- Plain-backed Sunskink
  Lampropholis delicata (De Vis, 1888) -- valid -- Garden Skink, Metallic Skink, Plague Skink, Rainbow Skink, Grass Skink
  Lampropholis elongata Greer, 1997 -- valid -- Long Sunskink
  Lampropholis guichenoti (A. M. C. Duméril and Bibron, 1839) -- valid -- Pale-flecked Garden Sunskink, Garden Skink
  Lampropholis mirabilis Ingram and Rawlinson, 1981 -- valid -- Saxicoline Sunskink
  Lampropholis robertsi Ingram, 1991 -- valid -- Grey-bellied Sunskink
  Langaha alluaudi Mocquard, 1901 -- valid -- Southern Leafnose Snake
  Langaha madagascariensis Bonaterre, 1790 -- valid
  Langaha pseudoalluaudi Domergue, 1988 -- valid
  Lankascincus deignani (Taylor, 1950) -- valid -- Deignan Tree Skink
  Lankascincus deraniyagalae Greer, 1991 -- invalid
  Lankascincus dorsicatenatus (Deraniyagala, 1953) -- valid
  Lankascincus fallax (Peters, 1860) -- valid -- Peters' Tree Skink
  Lankascincus gansi Greer, 1991 -- valid -- Gans' Tree Skink
  Lankascincus greeri Batuwita and Pethiyagoda, 2007 -- invalid
  Lankascincus munindradasai Mendis Wickramasinghe, Rodrigo, Dayawansa and Jayantha, 2007 -- invalid
  Lankascincus sripadensis Mendis Wickramasinghe, Rodrigo, Dayawansa and Jayantha, 2007 -- valid -- Sripada Forest Skink
  Lankascincus taprobanensis (Kelaart, 1854) -- valid -- Ceylon Tree Skink
  Lankascincus taylori Greer, 1991 -- valid -- Taylor's Tree Skink
  Larutia larutensis (Boulenger, 1900) -- valid -- Black Larut Skink, Larut Hills Larut Skink
  Larutia miodactyla (Boulenger, 1903) -- valid -- Single Finger Larut Skink, Titiwanga Larut Skink
  Larutia nubisilvicola Chan-Ard, Cota, Makchai and Lhaotaew, 2011 -- valid
  Larutia penangensis Grismer, Huat, Siler, Chan, Wood, Grismer, Sah and Ahmad, 2011 -- valid -- Penang Island Larut Skink
  Larutia puehensis Grismer, Leong and Yaakob, 2003 -- valid -- Berumput Two-toed Skink
  Larutia seribuatensis Grismer, Leong and Yaakob, 2003 -- valid -- Two-lined Two-toed Skink, Seribuat Larut Skink
  Larutia sumatrensis (Bleeker, 1860) -- valid
  Larutia trifasciata (Tweedie, 1940) -- valid -- Three-banded Larut Skink
  Latastia boscai Bedriaga, 1884 -- valid -- Eritrea Longtail Lizard, Bosca's Long-tailed Lizard
  Latastia boscai arenicola Parker, 1942 -- valid
  Latastia boscai boscai Bedriaga, 1884 -- valid
  Latastia boscai burii Boulenger, 1907 -- valid
  Latastia caeruleopunctata Parker, 1935 -- valid -- Parker's Long-tailed Lizard
  Latastia carinata (Peters, 1874) -- invalid
  Latastia cherchii Arillo, Balletto and Spano, 1967 -- valid
  Latastia doriai Bedriaga, 1884 -- valid -- Doria's Long-tailed Lizard
  Latastia doriai doriai Bedriaga, 1884 -- valid
  Latastia doriai martensi Bedriaga, 1884 -- valid
  Latastia doriai scorteccii Arillo, Balletto and Spano, 1967 -- valid
  Latastia johnstonii Boulenger, 1907 -- valid -- Johnston's Long-tailed Lizard, Nyasaland Long-tailed Lizard
  Latastia longicaudata (Reuss, 1834) -- valid -- Southern Long-tailed Lizard, Common Long-tailed Lizard
  Latastia longicaudata andersonii Boulenger, 1921 -- valid
  Latastia longicaudata lanzai Arillo, Balletto and Spano, 1967 -- valid
  Latastia longicaudata longicaudata (Reuss, 1834) -- valid
  Latastia longicaudata revoili (Vaillant, 1882) -- valid
  Latastia ornata Monard, 1940 -- valid
  Latastia siebenrocki (Tornier, 1905) -- valid -- Siebenrock's Longtail Lizard
  Latastia taylori Parker, 1942 -- valid -- Taylor's Longtail 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
  Leiolopisma alazon Zug, 1985 -- valid -- Lauan Ground Skink
  Leiolopisma ceciliae Arnold and Bour, 2008 -- valid
  Leiolopisma fasciolare (Girard, 1858) -- valid
  Leiolopisma mauritiana (Günther, 1877) -- valid
  Leiolopisma telfairii (Desjardin, 1831) -- valid -- Round Island Skink
  Lepidognathus rugosus Lidth de Jeude, 1890 -- invalid
  Lepidophyma chicoasensis Álvarez and Valentin, 1988 -- valid -- Lagartija-nocturna del Sumidero, Sumidero Tropical Night Lizard
  Lepidophyma cuicateca Canseco-Marquez, Gutiérrez-Mayén and Mendoza-Hernández, 2008 -- valid
  Lepidophyma dontomasi (H. M. Smith, 1942) -- valid -- Lagartija-nocturna de MacDougall, MacDougall's Tropical Night Lizard
  Lepidophyma flavimaculatum Duméril, 1851 -- valid -- Lagartija-nocturna puntos amarillos, Yellow-spotted Night Lizard
  Lepidophyma flavimaculatum flavimaculatum Duméril, 1851 -- valid
  Lepidophyma flavimaculatum ophiophthalmum Taylor, 1955 -- valid
  Lepidophyma flavimaculatum tenebrarum Walker, 1955 -- invalid
  Lepidophyma gaigeae Mosauer, 1936 -- valid -- Lagartija-nocturna de Gaiger, Gaige's Tropical Night Lizard
  Lepidophyma lineri H. M. Smith, 1973 -- valid -- Liner's Tropical Night Lizard
  Lepidophyma lipetzi H. M. Smith and del Toro, 1977 -- valid -- Lagartija-nocturna del Ocote, Lipetz's Tropical Night Lizard
  Lepidophyma lowei R. L. Bezy and Camarillo, 1997 -- valid -- Lowe's Tropical Night Lizard
  Lepidophyma mayae R. L. Bezy, 1973 -- valid -- Mayan Tropical Night Lizard
  Lepidophyma micropholis Walker, 1955 -- valid -- Lagartija-nocturna de cueva, Cave Tropical Night Lizard
  Lepidophyma occulor H. M. Smith, 1942 -- valid -- Lagartija-nocturna de Jalapa, Japlan Tropical Night Lizard
  Lepidophyma pajapanensis Werler, 1957 -- valid -- Lagartija-nocturna de Pajapan, Pajapan Tropical Night Lizard
  Lepidophyma radula (H. M. Smith, 1942) -- valid -- Lagartija-nocturna de Yautepec, Yautepec Tropical Night Lizard
  Lepidophyma reticulatum Taylor, 1955 -- valid -- Costa Rican Tropical Night Lizard
  Lepidophyma smithii Bocourt, 1876 -- valid -- Smith's Tropical Night Lizard
  Lepidophyma smithii tehuanae H. M. Smith, 1942 -- invalid
  Lepidophyma sylvaticum Taylor, 1939 -- valid -- Lagartija-nocturna de montaña, Madrean Tropical Night Lizard
  Lepidophyma tarascae R. L. Bezy, Webb and Álvarez, 1982 -- valid -- Lagartija-nocturna tarasca, Tarascan Tropical Night Lizard
  Lepidophyma tuxtlae Werler and Shannon, 1957 -- valid -- Lagartija-nocturna de Los Tuxtlas, Tuxtla Tropical Night Lizard
  Lepidophyma zongolica García-Vázquez, Canseco-Marquez and Aguilar-López, 2010 -- valid
  Lepidothyris fernandi (Burton, 1836) -- invalid
  Lepidothyris fernandi harlani (Hallowell, 1845) -- invalid
  Lepidothyris hinkeli Wagner, Böhme, Pauwels and Schmitz, 2009 -- invalid
  Lepidothyris hinkeli joei Wagner, Böhme, Pauwels and Schmitz, 2009 -- invalid
  Lepidothyris striatus (Hallowell, 1854) -- invalid
  Leposoma annectans Ruibal, 1952 -- valid
  Leposoma baturitensis Rodrigues and Borges, 1997 -- valid
  Leposoma caparensis Esqueda, 2005 -- invalid
  Leposoma ferreirai Rodrigues and Avila-Pires, 2005 -- invalid
  Leposoma guianense Ruibal, 1952 -- invalid
  Leposoma hexalepis Ayala and Harris, 1982 -- invalid
  Leposoma ioanna Uzzell and Barry, 1971 -- invalid
  Leposoma nanodactylus Rodrigues, 1997 -- valid
  Leposoma osvaldoi Avila-Pires, 1995 -- invalid
  Leposoma parietale (Cope, 1886) -- invalid
  Leposoma percarinatum (Müller, 1923) -- invalid
  Leposoma puk Rodrigues, Dixo, Pavan and Verdade, 2002 -- valid
  Leposoma rugiceps (Cope, 1869) -- invalid
  Leposoma scincoides Spix, 1825 -- valid -- Skink Tegu
  Leposoma sinepollex Rodrigues, Texeira, Recoder, Dal Vechio, Damasceno and Machado-Pellegrino, 2013 -- valid
  Leposoma snethlageae Avila-Pires, 1995 -- invalid
  Leposoma southi Ruthven and Gaige, 1924 -- invalid
  Leposoma southi orientalis Taylor, 1955 -- 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 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 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
  Leptodrymus pulcherrimus (Cope, 1874) -- valid -- Striped Lowland Snake
  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 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 haileyi Murphy, Charles, Lehtinen and Koeller, 2013 -- valid
  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 riveti Despax, 1910 -- valid -- Despax's Parrot Snake
  Leptophis stimsoni Harding, 1995 -- valid -- Gray Lora
  Leptoseps osellai (Böhme, 1981) -- valid -- Osella's Skink
  Leptoseps poilani (Bourret, 1937) -- valid
  Leptosiaphos aloysiisabaudiae (Peracca, 1907) -- valid -- Uganda Five-toed Skink
  Leptosiaphos amieti (Perret, 1973) -- valid -- Cameroon Five-toed Skink
  Leptosiaphos blochmanni (Tornier, 1903) -- valid -- Zaire Three-toed Skink
  Leptosiaphos dewittei (Loveridge, 1934) -- valid -- De Witte's Leaf-litter Skink, De Witte's Five-toed Skink
  Leptosiaphos dungeri Trape, 2012 -- valid
  Leptosiaphos fuhni (Perret, 1973) -- valid -- Fuhn's Five-toed Skink
  Leptosiaphos graueri (Sternfeld, 1912) -- valid -- Rwanda Five-toed Skink
  Leptosiaphos hackarsi (De Witte, 1941) -- valid -- Hackars' Five-toed Skink
  Leptosiaphos hylophilus Laurent, 1982 -- valid -- Laurenti's Five-toed Skink
  Leptosiaphos ianthinoxantha (Böhme, 1975) -- valid -- Yellow and Violet Bellied Mountain Skink
  Leptosiaphos kilimensis (Stejneger, 1891) -- valid -- Kilimanjaro Five-toed Skink
  Leptosiaphos koutoui Ineich, Schmitz, Chirio and Lebreton, 2004 -- valid
  Leptosiaphos luberoensis (De Witte, 1933) -- valid -- Witte's Five-toed Skink
  Leptosiaphos meleagris (Boulenger, 1907) -- valid -- Ruwenzori Four-toed Skink
  Leptosiaphos pauliani (Angel, 1940) -- valid
  Leptosiaphos rhodurus Laurent, 1951 -- valid -- Red Five-toed Skink
  Leptosiaphos rhomboidalis Broadley, 1989 -- valid -- Udzungwa Five-toed Skink
  Leptosiaphos vigintiserierum (Sjöstedt, 1897) -- valid -- African Five-toed Skink
  Lerista aericeps Storr, 1986 -- valid -- Desert Plain Slider
  Lerista allanae (Longman, 1937) -- valid -- Greater Robust Fine-lined Slider
  Lerista allochira Kendrick, 1989 -- valid -- Cape Range Slider
  Lerista ameles Greer, 1979 -- valid -- Limbless Fine-lined Slider
  Lerista amicorum Smith and Adams, 2007 -- valid -- Fortescue Three-toed Slider
  Lerista apoda Storr, 1976 -- valid -- Dampier Land Limbless Slider
  Lerista arenicola Storr, 1971 -- valid -- Bight Slider
  Lerista axillaris Storr, 1991 -- valid -- Stripe-sided Robust Slider
  Lerista baynesi Storr, 1971 -- valid -- Bayne's Slider
  Lerista bipes (Fischer, 1882) -- valid -- North-western Sandslider
  Lerista borealis Storr, 1971 -- valid -- Inland Kimberley Slider
  Lerista bougainvillii (Gray, 1839) -- valid -- South-eastern Slider
  Lerista bunglebungle Storr, 1991 -- valid -- Bunglebungle Robust Slider
  Lerista carpentariae Greer, 1983 -- valid -- Carpentaria Fine-lined Slider
  Lerista chalybura Storr, 1985 -- valid -- Pilbara Blue-tailed Slider
  Lerista chordae Amey, Kutt and Hutchinson, 2005 -- valid -- Lyre-patterned Slider
  Lerista christinae Storr, 1979 -- valid -- Bold-striped Slider
  Lerista cinerea Greer, McDonald and Lawrie, 1983 -- valid -- Vine-thicket Fine-lined Slider
  Lerista clara Smith and Adams, 2007 -- valid -- Sharp-blazed Three-toed Slider
  Lerista colliveri Couper and Ingram, 1992 -- valid -- Nubbinned Fine-lined Slider
  Lerista connivens Storr, 1971 -- valid -- Blinking Broad-blazed Slider
  Lerista desertorum (Sternfeld, 1919) -- valid -- Central Deserts Robust Slider
  Lerista distinguenda (Werner, 1910) -- valid -- South-western Orange-tailed Slider
  Lerista dorsalis Storr, 1985 -- valid -- Southern Slider
  Lerista edwardsae Storr, 1982 -- valid -- Myall Slider
  Lerista elegans (Gray, 1845) -- valid -- Elegant Slider
  Lerista elongata Storr, 1990 -- valid -- Wide-striped Mulch Slider
  Lerista emmotti Ingram, Couper and Donnellan, 1993 -- valid -- Noonbah Robust Slider
  Lerista eupoda Smith, 1996 -- valid -- Meekatharra Slider
  Lerista flammicauda Storr, 1985 -- valid -- Pilbara Flame-tailed Slider
  Lerista fragilis (Günther, 1876) -- valid -- Eastern Mulch-slider
  Lerista frosti (Zietz, 1920) -- valid -- Centralian Slider
  Lerista gascoynensis Storr, 1986 -- valid -- Gascoyne Broad-blazed Slider
  Lerista gerrardii (Gray, 1864) -- valid -- Bold-striped Robust Slider
  Lerista greeri Storr, 1982 -- valid -- South-eastern Kimberley Sandslider
  Lerista griffini Storr, 1982 -- valid -- Stout Sandslider
  Lerista haroldi Storr, 1983 -- valid -- Gnaraloo Mulch-slider
  Lerista humphriesi Storr, 1971 -- valid -- Taper-tailed West-coast Slider
  Lerista ingrami Storr, 1991 -- valid -- McIvor River Slider
  Lerista ips Storr, 1980 -- valid -- Robust Duneslider
  Lerista jacksoni Smith and Adams, 2007 -- valid -- Jackson's Three-toed Slider
  Lerista kalumburu Storr, 1976 -- valid -- Kalumburu Slider
  Lerista karlschmidti (Marx and Hosmer, 1959) -- valid -- Lesser Robust Fine-lined Slider
  Lerista kendricki Storr, 1991 -- valid -- Dark Broad-blazed Slider
  Lerista kennedyensis Kendrick, 1989 -- valid -- Kennedy Range Broad-blazed Slider
  Lerista kingi Smith and Adams, 2007 -- valid -- King's Three-toed Slider
  Lerista labialis Storr, 1971 -- valid -- Southern Sandslider
  Lerista lineata Bell, 1833 -- valid -- Perth Slider
  Lerista lineopunctulata (A. M. C. Duméril and Bibron, 1839) -- valid -- Dotted-line Robust Slider, West Coast Line-spotted Lerista
  Lerista macropisthopus (Werner, 1903) -- valid -- Unpatterned Robust Slider
  Lerista macropisthopus fusciceps Storr, 1991 -- valid
  Lerista macropisthopus galea Storr, 1991 -- valid
  Lerista macropisthopus macropisthopus (Werner, 1903) -- valid
  Lerista macropisthopus remota Storr, 1991 -- valid
  Lerista maculosa Storr, 1991 -- valid -- Spotted Broad-blazed Slider
  Lerista micra Smith and Adams, 2007 -- valid -- Micro Three-toed Slider
  Lerista microtis (Gray, 1845) -- valid -- South-western Slider
  Lerista microtis intermedia Storr, 1991 -- valid
  Lerista microtis microtis (Gray, 1845) -- valid
  Lerista microtis schwaneri Storr, 1991 -- valid
  Lerista muelleri (Fischer, 1881) -- valid -- Wood Mulch-slider
  Lerista neander Storr, 1971 -- valid -- Pilbara Robust Slider
  Lerista nevinae Smith and Adams, 2007 -- valid -- Nevin's Three-toed Slider
  Lerista nichollsi (Loveridge, 1933) -- valid -- Inland Broad-blazed Slider
  Lerista occulta Smith and Adams, 2007 -- valid -- Hidden Three-toed Slider
  Lerista onsloviana Storr, 1984 -- valid -- Onslow Broad-blazed Slider
  Lerista orientalis (De Vis, 1889) -- valid -- North-eastern Orange-tailed Slider
  Lerista petersoni Storr, 1976 -- valid -- Pale Broad-blazed Slider
  Lerista picturata (Fry, 1914) -- valid -- Southern Robust Slider
  Lerista planiventralis (Lucas and Frost, 1902) -- valid -- Keeled Slider
  Lerista planiventralis decora Storr, 1978 -- valid
  Lerista planiventralis maryani Storr, 1991 -- valid
  Lerista planiventralis planiventralis (Lucas and Frost, 1902) -- valid
  Lerista praefrontalis Greer, 1986 -- valid -- Yampi Sandslider
  Lerista praepedita (Boulenger, 1887) -- valid -- Blunt-tailed West-coast Slider
  Lerista punctatovittata (Günther, 1867) -- valid -- Eastern Robust Slider
  Lerista puncticauda Storr, 1991 -- valid -- Dotty-tailed Robust Slider
  Lerista quadrivincula Shea, 1991 -- valid -- Four-chained Slider
  Lerista robusta Storr, 1990 -- valid -- Brad-eyed Sandslider
  Lerista rochfordensis Amey and Couper, 2009 -- valid -- Rochford Slider
  Lerista rolfei Smith and Adams, 2007 -- valid -- Rolfe's Three-toed Slider
  Lerista separanda Storr, 1976 -- valid -- Dampierland Plain Slider
  Lerista simillima Storr, 1984 -- valid -- Fitzroy Sandslider
  Lerista speciosa Storr, 1990 -- valid -- Pale-striped Mulch-slider
  Lerista stictopleura Storr, 1985 -- valid -- Spotted Broad-blazed Slider
  Lerista storri Greer, McDonald and Lawrie, 1983 -- valid -- Mount Surprise Slider, Storr's Lerista
  Lerista stylis (Mitchell, 1955) -- valid -- Arnhem Coast Fine-lined Slider
  Lerista taeniata Storr, 1986 -- valid -- Ribbon Slider
  Lerista talpina Storr, 1991 -- valid -- Phantom Mole Slider
  Lerista terdigitata (Parker, 1926) -- valid -- Robust Mulch-slider
  Lerista tridactyla Storr, 1990 -- valid -- Dark-backed Mulch-slider
  Lerista uniduo Storr, 1984 -- valid -- Slender Broad-blazed Slider
  Lerista varia Storr, 1986 -- valid -- Shark Bay Broad-blazed Slider
  Lerista verhmens Smith and Adams, 2007 -- valid -- Powerful Three-toed Slider
  Lerista vermicularis Storr, 1982 -- valid -- Slender Duneslider
  Lerista viduata Storr, 1991 -- valid -- Ravensthorpe Range Slider
  Lerista vittata Greer, McDonald and Lawrie, 1983 -- valid -- Side-striped Fine-lined Slider
  Lerista walkeri (Boulenger, 1891) -- valid -- Coastal Kimberley Slider
  Lerista wilkinsi (Parker, 1926) -- valid -- Two-toed Fine-lined Slider
  Lerista xanthura Storr, 1976 -- valid -- Yellow-tailed Plain Slider
  Lerista yuna Storr, 1991 -- valid -- Yuna Broad-blazed Slider
  Lerista zietzi Wells and Wellington, 1985 -- invalid
  Lerista zonulata Storr, 1991 -- valid -- North-eastern Orange-tailed Slider
  Letheobia acutus (A. M. C. Duméril and Bibron, 1844) -- invalid
  Letheobia ataeniata (Boulenger, 1912) -- invalid
  Letheobia caeca (A. H. A. Duméril, 1856) -- valid -- Gabon Beaked Snake
  Letheobia crossii (Boulenger, 1893) -- valid -- Cross' Beaked Snake
  Letheobia debilis (Joger, 1990) -- valid -- Feeble Gracile Blind-snake
  Letheobia decorosa (Buchholz and Peters, 1875) -- valid -- Cameroon Worm Snake, Cameroon Gracile Blind-snake
  Letheobia episcopus (Franzen and Wallach, 2002) -- valid
  Letheobia erythraea (Scortecci, 1928) -- valid -- Eritrean Blind Snake
  Letheobia feae (Boulenger, 1906) -- valid -- St. Thomas Beaked Snake
  Letheobia gracilis (Sternfeld, 1910) -- valid -- Urungu Beaked Snake, Gracile Blind-snake
  Letheobia graueri (Sternfeld, 1912) -- valid -- Sternfeld's Beaked Snake
  Letheobia jubana Broadley and Wallach, 2007 -- valid
  Letheobia kibarae (de Witte, 1953) -- valid -- Upemba Gracile Blind-snake, Katanga Beaked Snake
  Letheobia largeni Broadley and Wallach, 2007 -- valid -- Largen's Blind-snake, Gracile Blind-snake
  Letheobia leucosticta (Boulenger, 1898) -- valid -- Liberia Worm Snake
  Letheobia lumbriciformis (Peters, 1874) -- valid -- Zanzibar Gracile Blind-snake, Wormlike Beaked Snake
  Letheobia newtoni (Bocage, 1890) -- valid
  Letheobia obtusa (Peters, 1865) -- invalid
  Letheobia pallida Cope, 1868 -- valid -- Zanzibar Beaked Snake
  Letheobia pauwelsi Wallach, 2005 -- valid
  Letheobia pembana Broadley and Wallach, 2007 -- valid -- Pemba gracile Blind-snake
  Letheobia praeocularis (Stejneger, 1894) -- valid -- Léopoldville Beaked Snake
  Letheobia rufescens (Chabanaud, 1916) -- valid -- Oubangui Gracile Blind-snake, Haut-Oubangui Beaked Snake
  Letheobia scortecci (Gans and Laurent, 1965) -- invalid
  Letheobia simoni (Boettger, 1879) -- valid -- Israeli Worm Snake
  Letheobia somalica (Boulenger, 1895) -- valid -- Ethiopian Blind Snake, Highland Beaked Snake
  Letheobia stejnegeri (Loveridge, 1931) -- valid -- Stejneger's Beaked Snake
  Letheobia sudanensis (Schmidt, 1923) -- valid -- Sudan Beaked Snake, Garamba Gracile Blind-snake
  Letheobia swahilica Broadley and Wallach, 2007 -- valid -- Swahili Gracile Blind-snake
  Letheobia toritensis Broadley and Wallach, 2007 -- valid -- Torit Gracile Blind-snake
  Letheobia uluguruensis (Barbour and Loveridge, 1928) -- valid -- Uluguru Gracile Blind-snake, Uluguri Worm Snake
  Letheobia unitaeniata (Peters, 1878) -- invalid
  Letheobia wittei (Roux-Estève, 1974) -- valid -- De Witte's Gracile Blind-snake, Witte's Beaked Snake
  Liburnascincus coensis (Mitchell, 1953) -- valid -- Coen Rainbow-skink
  Liburnascincus mundivensis (Broom, 1898) -- valid -- Outcrop Rainbow-skink
  Liburnascincus scirtetis (Ingram and Covacevich, 1980) -- valid -- Black Mountain Rainbow-skink
  Lichanura orcutti Stejneger, 1889 -- valid -- Northern Three-lined Boa, Rosy Boa
  Lichanura trivirgata Cope, 1861 -- valid -- Boa solocuate, Rosy Boa, Three-lined Boa, Mexican Rosy Boa
  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
  Liopeltis calamaria (Günther, 1858) -- valid -- Calamaria Reed Snake
  Liopeltis frenatus (Günther, 1858) -- valid -- Günther's Reed Snake
  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
  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 grandidieri Mocquard, 1904 -- valid -- Grandidier's Water Snake
  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
  Liopholis guthega (Donnellan, Hutchinson, Dempsey and Osborne, 2002) -- valid -- Guthega Skink
  Liopholis inornata (Rosén, 1905) -- valid -- Unadorned Desert-skink, Desert Skink
  Liopholis kintorei (Stirling and Zietz, 1893) -- valid -- Great Desert-skink, Kintore's Egernia
  Liopholis margaretae (Storr, 1968) -- valid -- Centralian Ranges Rock-skink
  Liopholis modesta (Storr, 1968) -- valid -- Eastern Ranges Rock-skink
  Liopholis montana (Donnellan, Hutchinson, Dempsey and Osborne, 2002) -- valid -- Mountain Skink
  Liopholis multiscutata (Mitchell and Behrndt, 1949) -- valid -- Southern Sand-skink, Heath Skink, Bull Skink
  Liopholis pulchra (Werner, 1910) -- valid -- South-western Rock-skink, Spectacled Rock Skink
  Liopholis pulchra longicauda (Ford, 1963) -- valid
  Liopholis pulchra pulchra (Werner, 1910) -- valid
  Liopholis slateri (Storr, 1968) -- valid -- Centralian Floodplains Desert-skink, Slater's Egernia
  Liopholis slateri slateri (Storr, 1968) -- valid
  Liopholis slateri virgata (Storr, 1968) -- valid
  Liopholis striata (Sternfeld, 1919) -- valid -- Nocturnal Desert-skink, Night Skink, Striated Egernia
  Liopholis whitii (Lacépède, 1804) -- valid -- White's Rock-skink, White's Skink
  Liopholis whitii moniligera (A. M. C. Duméril and Bibron, 1839) -- invalid
  Lioscincus greeri (Böhme, 1979) -- invalid
  Lioscincus maruia Sadlier, Whitaker and Bauer, 1998 -- invalid
  Lioscincus nigrofasciolatum (Peters, 1869) -- invalid
  Lioscincus steindachneri Bocage, 1873 -- valid
  Lioscincus tillieri (Ineich and Sadlier, 1991) -- invalid
  Lioscincus vivae Sadlier, Bauer, Whitaker and Smith, 2004 -- valid
  Lipinia albodorsalis (Vogt, 1932) -- invalid
  Lipinia auriculata (Taylor, 1917) -- valid -- Taylor's Lipinia
  Lipinia auriculata auriculata (Taylor, 1917) -- valid
  Lipinia auriculata herrei (Taylor, 1922) -- valid
  Lipinia auriculata kempi (Taylor, 1919) -- valid
  Lipinia cheesmanae (Parker, 1940) -- valid -- Cheesman's Lipinia
  Lipinia inexpectata Das and Austin, 2007 -- valid
  Lipinia infralineolata (Günther, 1873) -- valid
  Lipinia leptosoma (Brown and Fehlmann, 1958) -- valid -- Pandanus Skink, Palau Pandanus Skink, Slender Lipinia
  Lipinia longiceps (Boulenger, 1895) -- valid -- Long Lipinia
  Lipinia macrotympanum (Stoliczka, 1873) -- valid -- Big-eared Lipinia
  Lipinia miangensis (Werner, 1910) -- valid -- Werner's Lipinia
  Lipinia nitens (Peters, 1871) -- valid
  Lipinia noctua (Lesson, 1830) -- invalid -- Moth Skink
  Lipinia nototaenia (Boulenger, 1914) -- invalid
  Lipinia occidentalis Günther, 2000 -- valid
  Lipinia pulchella (Gray, 1845) -- valid -- Beautiful Lipinia
  Lipinia pulchella levitoni (Brown and Alcala, 1963) -- valid
  Lipinia pulchella pulchella (Gray, 1845) -- valid
  Lipinia pulchella taylori (Brown and Alcala, 1956) -- valid
  Lipinia pulchra (Boulenger, 1903) -- invalid
  Lipinia quadrivittata (Peters, 1867) -- valid -- Four-striped Lipinia
  Lipinia rabori (Brown and Alcala, 1956) -- valid -- Rabor's Lipinia
  Lipinia relicta (Vinciguerra, 1892) -- valid -- Vinciguerra's Lipinia
  Lipinia rouxi (Hediger, 1934) -- valid -- Roux's Lipinia
  Lipinia semperi (Peters, 1867) -- valid -- Semper's Lipinia
  Lipinia septentrionalis Günther, 2000 -- valid
  Lipinia subvittata (Günther, 1873) -- valid -- Striped Lipinia
  Lipinia surda (Boulenger, 1900) -- valid -- Malaysian Striped Skink
  Lipinia venemai Brongersma, 1953 -- valid -- Brongersma's Lipinia
  Lipinia vittigera (Boulenger, 1894) -- valid -- Banded Lipinia, Sipora Striped Skink, Common Striped Skink
  Lipinia vulcania Girard, 1858 -- valid -- Vulcan Lipinia
  Lipinia zamboangensis (Brown and Alcala, 1963) -- valid -- Zamboang Lipinia
  Lissolepis coventryi (Storr, 1978) -- valid -- Eastern Mourning Skink, Swamp Skink
  Lissolepis luctuosa (Peters, 1866) -- valid -- Western Mourning Skink, Western Glossy Swamp Skink
  Lobulia alpina Greer, Allison and Cogger, 2005 -- invalid
  Lobulia brongersmai (Zweifel, 1972) -- valid -- Brongersma's Lobulia
  Lobulia elegans (Boulenger, 1897) -- valid -- Elegant Lobulia
  Lobulia fortis Slavenko, Tamar, Tallowin, Kraus, Allison, Carranza and Meiri, 2021 -- valid
  Lobulia glacialis Greer, Allison and Cogger, 2005 -- invalid
  Lobulia huonensis Slavenko, Tamar, Tallowin, Kraus, Allison, Carranza and Meiri, 2021 -- valid
  Lobulia marmorata Slavenko, Tamar, Tallowin, Kraus, Allison, Carranza and Meiri, 2021 -- valid
  Lobulia stellaris Greer, Allison and Cogger, 2005 -- invalid
  Lobulia subalpina Greer, Allison and Cogger, 2005 -- invalid
  Lobulia vogelkopensis Slavenko, Tamar, Tallowin, Kraus, Allison, Carranza and Meiri, 2021 -- valid
  Loveridgea ionidesii (Battersby, 1950) -- valid -- Liwale Round-snouted Worm Lizard
  Loveridgea phylofiniens (Tornier, 1899) -- valid
  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 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 chrysoprateros Ota and Ross, 1994 -- valid -- Ross' Wolf Snake
  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 futsingensis (Pope, 1928) -- valid
  Lycodon gammiei (Blanford, 1878) -- valid -- Gammie's Wolf Snake, Sikkim False Wolf Snake
  Lycodon gongshan Vogel and Luo, 2011 -- valid -- Gongshan Wolf Snake
  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 liuchengchaoi Zhang, Jiang, Vogel and Rao, 2011 -- valid
  Lycodon mackinnoni Wall, 1906 -- valid -- Mackinnon's Wolf Snake
  Lycodon meridionale Bourret, 1935 -- valid
  Lycodon muelleri A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Müller's Wolf Snake
  Lycodon multifasciatus (Maki, 1931) -- valid
  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 paucifasciatus Rendahl in M. A. Smith, 1943 -- valid -- Rendahl's Wolf Snake
  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
  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 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 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 pembanum Laurent, 1968 -- invalid
  Lycophidion depressirostre Laurent, 1968 -- valid -- Flat-snouted Wolf Snake
  Lycophidion hellmichi Laurent, 1964 -- valid -- Hellmich's Wolf Snake
  Lycophidion irroratum (Leach, 1819) -- valid -- Leach's Wolf Snake, Pale Wolf Snake
  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 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
  Lygisaurus absconditus (Worthington-Wilmer, Couper, Amey, Zug and Roberts, 2005) -- valid -- Secretive Litter-skink
  Lygisaurus aeratus (Garman, 1901) -- valid -- Large-disced Litter-skink
  Lygisaurus curtus (Boulenger, 1897) -- valid
  Lygisaurus foliorum De Vis, 1884 -- valid -- Tree-base Litter-skink, Rainbow-skink
  Lygisaurus laevis (Oudemans, 1894) -- valid -- Rainforest Edge Litter-skink, Rainforest Litter-skink
  Lygisaurus macfarlani (Günther, 1877) -- valid -- Translucent Litter-skink
  Lygisaurus malleolus (Roberts, Couper, Worthington-Wilmer, Amey and Zug, 2005) -- valid -- Red-tailed Litter-skink
  Lygisaurus novaeguineae (Meyer, 1874) -- valid
  Lygisaurus parrhasius (Couper, Covacevich and Lethbridge, 1994) -- valid -- Fire-tailed Rainbow-skink
  Lygisaurus rococo Ingram and Covacevich, 1988 -- valid -- Chillagoe Litter-skink
  Lygisaurus sesbrauna Ingram and Covacevich, 1988 -- valid -- Eastern Cape Litter-skink
  Lygisaurus tanneri Ingram and Covacevich, 1988 -- valid -- Endeavour River Litter-skink
  Lygisaurus zuma Couper, 1993 -- valid -- Sun-loving Litter-skink
  Lygophis anomalus (Günther, 1858) -- valid
  Lygophis dilepis Cope, 1862 -- valid -- Lema's Ground Snake, Lema's Striped Snake
  Lygophis elegantissimus (Koslowsky, 1896) -- valid
  Lygophis flavifrenatus Cope, 1862 -- valid -- Fronted Ground Snake
  Lygophis lineatus (Linnaeus, 1758) -- valid -- Lined Ground Snake
  Lygophis meridionalis (Schenkel, 1901) -- valid
  Lygophis paucidens Hoge, 1953 -- valid -- Hoge's Ground Snake
  Lygophis vanzolinii (Dixon, 1985) -- valid -- Vanzolini's Ground Snake
  Lygosoma ahli Vogt, 1932 -- invalid
  Lygosoma albodorsale Vogt, 1932 -- invalid
  Lygosoma albopunctatum (Gray, 1846) -- invalid -- White-spotted Supple Skink
  Lygosoma angeli (Smith, 1937) -- valid -- Angel's Writhing Skink
  Lygosoma anguinum (Theobald, 1868) -- invalid
  Lygosoma bampfyldei Bartlett, 1895 -- valid -- Bampfylde's Supple Skink
  Lygosoma boehmei Ziegler, Schmitz, Heidrich, Vu and Nguyen, 2007 -- valid
  Lygosoma bowringii (Günther, 1864) -- invalid -- Christmas Island Grass-skink, Bowring's Supple Skink
  Lygosoma carinatum Darevsky and Orlova, 1996 -- invalid
  Lygosoma chaperi Vaillant, 1884 -- invalid
  Lygosoma corpulentum Smith, 1921 -- valid -- Fat Skink
  Lygosoma frontoparietale (Taylor, 1962) -- invalid -- Taylor's Writhing Skink, Pygmy Supple Skink
  Lygosoma goaensis (Sharma, 1976) -- invalid -- Goan Supple Skink
  Lygosoma guentheri (Peters, 1879) -- invalid -- Günther's Supple Skink, Günther's Writhing Skink
  Lygosoma haroldyoungi (Taylor, 1962) -- valid -- Harold's Writhing Skink, Harold Young's Supple Skink
  Lygosoma herberti Smith, 1916 -- invalid -- Herbert's Supple Skink
  Lygosoma isodactylum (Günther, 1864) -- valid -- Siamese Writhing Skink, Even-toed Supple Skink
  Lygosoma koratense Smith, 1917 -- valid -- Koraten Writhing Skink
  Lygosoma lanceolatum Broadley, 1990 -- invalid -- Broadley's Writhing Skink
  Lygosoma lineata (Gray, 1839) -- invalid -- Lined Supple Skink
  Lygosoma lineolatum (Stoliczka, 1870) -- invalid -- Striped Writhing Skink
  Lygosoma mafianum Broadley, 1994 -- invalid
  Lygosoma nototaenia Boulenger, 1914 -- invalid
  Lygosoma opisthorhodum Werner, 1910 -- valid
  Lygosoma pembanum Boettger, 1913 -- invalid
  Lygosoma popae (Shreve, 1940) -- invalid -- Pope's Writhing Skink
  Lygosoma pruthi (Sharma, 1977) -- invalid -- Pruthi's Supple Skink
  Lygosoma pulchrum Boulenger, 1903 -- invalid
  Lygosoma punctata (Linnaeus, 1758) -- invalid -- Common Dotted Garden Skink, Common Snake Skink, Punctate Supple Skink
  Lygosoma quadrupes (Linnaeus, 1766) -- valid -- Short-limbed Supple Skink, Linnaeus' Writhing Skink
  Lygosoma sanana Kopstein, 1926 -- invalid
  Lygosoma singha (Taylor, 1950) -- valid
  Lygosoma veunsaiense Geissler, Hartmann and Neang, 2012 -- valid
  Lygosoma vosmaeri (Gray, 1839) -- invalid -- Vosmer's Writhing Skink
  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 gasperetti Leviton, 1977 -- valid -- Leviton's Leafnose Snake
  Lytorhynchus kennedyi Schmidt, 1939 -- valid -- Kennedy's Leafnose Snake
  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
  Mabuya cochonae Hedges and Conn, 2012 -- valid -- Cochons Skink
  Mabuya desiradae Hedges and Conn, 2012 -- valid -- Désirade Skink
  Mabuya dominicana Garman, 1887 -- valid -- Dominica Skink
  Mabuya grandisterrae Hedges and Conn, 2012 -- valid -- Grande-Terre Skink
  Mabuya guadeloupae Hedges and Conn, 2012 -- valid -- Guadeloupean Skink
  Mabuya hispaniolae Hedges and Conn, 2012 -- valid -- Hispaniolan Two-lined Skink
  Mabuya ivensii (Bocage, 1879) -- invalid
  Mabuya mabouya (Bonnaterre, 1789) -- valid -- Greater Martinique Skink
  Mabuya montserratae Hedges and Conn, 2012 -- valid -- Montserrat Skink
  Macrelaps microlepidotus (Günther, 1860) -- valid -- Natal Black Snake
  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
  Macropholidus annectens Parker, 1930 -- valid -- Parker's Pholiodobolus
  Macropholidus ataktolepis Cadle and Chuna, 1995 -- valid
  Macropholidus huancabambae (Reeder, 1996) -- valid
  Macropholidus ruthveni Noble, 1921 -- valid -- Ruthven's Macropholidus
  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 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 meridionalis Domergue, 1987 -- valid
  Madagascarophis ocellatus Domergue, 1987 -- valid
  Madascincus ankodabensis (Angel, 1930) -- valid -- Ankodabe Skink
  Madascincus arenicola Miralles, Köhler, Glaw and Vences, 2011 -- valid
  Madascincus igneocaudatus (Grandidier, 1867) -- valid -- Redtail Skink
  Madascincus macrolepis (Boulenger, 1888) -- valid -- Rusty Skink
  Madascincus melanopleura (Günther, 1877) -- valid -- Common Madagascar Skink
  Madascincus minutus (Raxworthy and Nussbaum, 1993) -- valid
  Madascincus mouroundavae (Grandidier, 1872) -- valid -- Morondava Skink
  Madascincus nanus (Andreone and Greer, 2002) -- valid
  Madascincus polleni (Grandidier, 1869) -- valid -- Madagascar Coastal Skink
  Madascincus stumpffi (Boettger, 1882) -- valid -- Stumpff's Skink
  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
  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
  Manciola guaporicola (Dunn, 1935) -- valid -- Dunn's Mabuya, South American Small-handed Skink
  Manolepis putnami (Jan, 1863) -- valid -- Culebra cabeza surcada, Ridgehead Snake
  Maracaiba meridensis (Miralles, Rivas and Schargel, 2005) -- valid
  Maracaiba zuliae (Miralles, Rivas, Bonillo, Schargel, Barros, García-Perez and Barrio-Amorós, 2009) -- valid
  Marinussaurus curupira Peloso, Pellegrino, Rodrigues and Ávila-Pires, 2011 -- valid
  Marisora alliacea (Cope, 1875) -- valid
  Marisora aurulae Hedges and Conn, 2012 -- valid -- Lesser Windward Skink
  Marisora brachypoda (Taylor, 1956) -- valid -- Mabuya centroamericana, Western Middle America Skink
  Marisora falconensis (Mijares-Urrutia and Arends, 1997) -- valid
  Marisora magnacornae Hedges and Conn, 2012 -- valid -- Corn Island Skink
  Marisora roatanae Hedges and Conn, 2012 -- valid -- Honduran Skink, Roatán Skink
  Marisora unimarginata (Cope, 1862) -- valid -- Central American Mabuya
  Marmorosphax boulinda Sadlier, Smith, Bauer and Whitaker, 2009 -- valid
  Marmorosphax kaala Sadlier, Smith, Bauer and Whitaker, 2009 -- valid
  Marmorosphax montana Sadlier and Bauer, 2000 -- valid
  Marmorosphax taom Sadlier, Smith, Bauer and Whitaker, 2009 -- valid
  Marmorosphax tricolor (Bavay, 1869) -- 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
  Medopheos edracanthus (Bocourt, 1874) -- valid -- Bocourt's Ameiva
  Megatyphlops anomalus (Bocage, 1873) -- invalid
  Megatyphlops brevis (Scortecci, 1929) -- invalid
  Megatyphlops mucruso (Peters, 1854) -- invalid
  Megatyphlops schlegelii (Bianconi, 1849) -- invalid
  Megatyphlops schlegelii petersii (Bocage, 1873) -- 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
  Melanophidium Günther, 1864 -- valid
  Melanophidium bilineatum Beddome, 1870 -- valid -- Two-lined Black Earth Snake
  Melanophidium khairei Gower, Giri, Captain and Wilkinson, 2016 -- valid
  Melanophidium punctatum Beddome, 1871 -- valid -- Beddome's Black Earth Snake
  Melanophidium wynaudense (Beddome, 1863) -- valid -- Indian Black Earth Snake, Wayanad Shieldtail
  Melanoseps ater (Günther, 1873) -- valid -- Black Limbless Skink
  Melanoseps emmrichi Broadley, 2006 -- valid -- Uluguru Limbless Skink
  Melanoseps longicauda Tornier, 1900 -- valid -- Pangani Black Limbless Skink, Longtail Limbless Skink
  Melanoseps loveridgei Brygoo and Roux-Estève, 1982 -- valid -- Loveridge's Limbless Skink
  Melanoseps occidentalis (Peters, 1877) -- valid -- Western Limbless Skink
  Melanoseps occidentalis occidentalis (Peters, 1877) -- valid
  Melanoseps occidentalis zairensis Brygoo and Roux-Estève, 1982 -- valid
  Melanoseps pygmaeus Broadley, 2006 -- valid -- Pygmy Limbless Skink
  Melanoseps rondoensis Loveridge, 1942 -- valid -- Rondo Limbless Skink
  Melanoseps uzungwensis Loveridge, 1942 -- valid -- Udzungwa Limbless Skink
  Menetia alanae Rankin, 1979 -- valid -- Top End Dwarf Skink
  Menetia amaura Storr, 1978 -- valid -- Common Dwarf Skink
  Menetia concinna Sadlier, 1984 -- valid -- Jabiluka Dwarf Skink
  Menetia greyii Gray, 1845 -- valid -- Common Dwarf Skink
  Menetia koshlandae Greer, 1991 -- invalid
  Menetia maini Storr, 1976 -- valid -- Northern Dwarf Skink
  Menetia sadlieri Greer, 1991 -- invalid
  Menetia surda Storr, 1976 -- valid -- Western Dwarf Skink
  Menetia surda cresswelli Aplin and Adams, 1998 -- valid
  Menetia surda surda Storr, 1976 -- valid
  Menetia timlowi Ingram, 1977 -- invalid
  Meroles anchietae (Bocage, 1867) -- valid -- Anchieta's Dune Lizard, Anchieta's Shovel-Snouted Lizard
  Meroles ctenodactylus (Smith, 1838) -- valid -- Giant Desert Lizard, Smith's Sand Lizard, Smith's Desert Lizard
  Meroles cuneirostris (Strauch, 1867) -- valid -- Wedge-snouted Sand Lizard, Wedge-snouted Desert Lizard
  Meroles knoxii (Milne-Edwards, 1829) -- valid -- Knox's Desert Lizard, Knox's Ocellated Sand Lizard
  Meroles micropholidotus Mertens, 1938 -- valid -- Small-scaled Desert Lizard
  Meroles reticulatus (Bocage, 1867) -- valid -- Reticulate Sand Lizard
  Meroles squamulosus (Peters, 1854) -- valid -- Savanna Lizard, Common Rough-scaled Lizard, Common Sand Lizard
  Meroles suborbitalis (Peters, 1869) -- valid -- Spotted Sand Lizard
  Mesalina adramitana (Boulenger, 1917) -- valid -- Hadramaut Sand Lizard
  Mesalina ayunensis Arnold, 1980 -- valid -- Ayun Sand Lizard, Arnold's Sand Lizard
  Mesalina bahaeldini Segoli, Cohen and Werner, 2002 -- valid
  Mesalina bahaeldini bahaeldini Segoli, Cohen and Werner, 2002 -- valid
  Mesalina bahaeldini curatorum Werner and Ashkenazi, 2010 -- valid
  Mesalina balfouri (Blanford, 1881) -- valid
  Mesalina brevirostris Blanford, 1874 -- valid -- Blanford's Short-Nosed Desert Lizard
  Mesalina ercolinii (Lanza and Poggesi, 1975) -- valid
  Mesalina guttulata (Lichtenstein, 1823) -- valid -- Small-spotted Lizard, Desert Lacerta
  Mesalina kuri Joger and Mayer, 2002 -- valid
  Mesalina martini (Boulenger, 1897) -- valid -- Martin's Desert Racer
  Mesalina olivieri (Audouin, 1829) -- valid -- Olivier's Sand Lizard
  Mesalina olivieri olivieri (Audouin, 1829) -- valid
  Mesalina olivieri schmidtii (Haas, 1951) -- valid
  Mesalina pasteuri (Bons, 1960) -- valid -- Pasteur's Lizard
  Mesalina rubropunctata (Lichtenstein, 1823) -- valid -- Red-spotted Lizard
  Mesalina simoni (Boettger, 1881) -- valid
  Mesalina watsonana (Stoliczka, 1872) -- valid -- Persian Long-Tailed Desert Lizard
  Mesaspis antauges (Cope, 1866) -- invalid -- Lagarto escorpión de Monte Orizaba, Mount Orizaba Alligator Lizard
  Mesaspis gadovii (Boulenger, 1913) -- invalid -- Gadow's Alligator Lizard
  Mesaspis gadovii gadovii (Boulenger, 1913) -- invalid
  Mesaspis gadovii levigata (Tihen, 1949) -- invalid
  Mesaspis juarezi (Karges and Wright, 1987) -- invalid -- Lagarto escorpión de Sierra de Juárez, Sierra Juarez Alligator Lizard
  Mesaspis monticola (Cope, 1878) -- invalid
  Mesaspis moreletii (Bocourt, 1872) -- invalid -- Morelet's Alligator Lizard
  Mesaspis moreletii moreletii (Bocourt, 1872) -- invalid
  Mesaspis moreletii rafaeli (Hartweg and Tihen, 1946) -- invalid
  Mesaspis moreletii salvadorensis (Schmidt, 1928) -- invalid
  Mesaspis moreletii temporalis (Hartweg and Tihen, 1946) -- invalid
  Mesaspis viridiflava (Bocourt, 1873) -- invalid -- Lagarto escorpión enano, Dwarf Alligator Lizard
  Mesobaena huebneri Mertens, 1925 -- valid -- Inirida Worm Lizard
  Mesobaena rhachicephala Hoogmoed, Pinto, da Rocha and Pereira, 2009 -- valid
  Mesoscincus altamirani (Dugès, 1891) -- valid -- Tepalcatepec Skink, Eslizón de Tepalcatepec
  Mesoscincus managuae (Dunn, 1933) -- valid -- Managua Skink
  Mesoscincus schwartzei (Fischer, 1884) -- valid -- Mayan Black-headed Skink, Schwartze's Skink, Eslizón de Schwartz
  Micrablepharus atticolus Rodrigues, 1996 -- valid
  Micrablepharus maximiliani (Reinhardt and Lütken, 1862) -- valid
  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
  Micropisthodon ochraceus Mocquard, 1894 -- valid
  Microps lineatus Hallowell, 1856 -- invalid
  Mimophis mahfalensis (Grandidier, 1867) -- valid
  Mimophis mahfalensis madagascariensis Günther, 1868 -- valid
  Mimophis mahfalensis mahfalensis (Grandidier, 1867) -- valid
  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
  Mochlus afer (Peters, 1854) -- invalid
  Mochlus brevicaudis (Greer, Grandison and Barbault, 1985) -- valid
  Mochlus grandisonianus Lanza and Carfi, 1966 -- valid -- Lanza's Writhing Skink
  Mochlus guineensis (Peters, 1879) -- valid
  Mochlus mabuiiformis (Loveridge, 1935) -- valid -- Mabuya-like Writhing Skink
  Mochlus mocquardi (Chabanaud, 1917) -- valid -- Mocquard's Writhing Skink
  Mochlus paedocarinatus Lanza and Carfi, 1968 -- valid -- Lanza's Writhing Skink, Abyssinian Writhing Skink
  Mochlus productus (Boulenger, 1909) -- valid -- Boulenger's Writhing Skink
  Mochlus simonettai (Lanza, 1979) -- valid -- Simonetta's Writhing Skink
  Mochlus somalicus (Parker, 1942) -- valid -- Somali Writhing Skink
  Mochlus sundevallii (Smith, 1849) -- valid -- Peters' Eyelid Skink, Peters' Writhing Skink, Sundevall's Writhing Skink
  Mochlus tanae (Loveridge, 1935) -- valid -- Loveridge's Writhing Skink, Tana River Writhing Skink
  Mochlus vinciguerrae (Parker, 1932) -- valid -- Vinciguerra's Writhing Skink
  Monopeltis adercae de Witte, 1953 -- valid -- Lualaba Worm Lizard
  Monopeltis anchietae (Bocage, 1873) -- valid -- Angolan Spade-snouted Worm Lizard, Anchieta's Worm-Lizard
  Monopeltis capensis Smith, 1848 -- valid -- Cape Worm Lizard, South African Shield-snouted Amphisbaenian, Cape Wedgesnouted Worm Lizard
  Monopeltis decosteri Boulenger, 1910 -- valid -- De Coster's Worm-Lizard
  Monopeltis galeata (Hallowell, 1852) -- valid -- Helmeted Worm Lizard
  Monopeltis guentheri Boulenger, 1885 -- valid -- Western Congo Worm Lizard
  Monopeltis infuscata Broadley, 1997 -- valid -- Dusky Spade-snouted Worm Lizard, Infuscate Wedge-snouted Amphisbaenian
  Monopeltis jugularis Peters, 1880 -- valid -- Gaboon Worm Lizard
  Monopeltis kabindae de Witte and Laurent, 1942 -- valid -- Kabinda Worm Lizard
  Monopeltis leonhardi Werner, 1910 -- valid -- Kalahari Worm Lizard
  Monopeltis luandae Gans, 1976 -- valid
  Monopeltis perplexus Gans, 1976 -- valid
  Monopeltis remaclei de Witte, 1933 -- valid -- Witte's Worm Lizard
  Monopeltis rhodesiana Broadley, Gans and Visser, 1976 -- valid
  Monopeltis scalper (Günther, 1876) -- valid -- Carved Worm Lizard
  Monopeltis scalper bulsi Laurent, 1954 -- valid
  Monopeltis scalper scalper (Günther, 1876) -- valid
  Monopeltis schoutedeni de Witte, 1933 -- valid -- Middle Congo Worm Lizard
  Monopeltis sphenorhynchus (Peters, 1879) -- valid -- Slender Spade-snouted Worm Lizard
  Monopeltis sphenorhynchus mauricei Parker, 1935 -- valid -- Maurice's Slender Worm Lizard, Maurice's Spade-snouted Worm Lizard
  Monopeltis sphenorhynchus sphenorhynchus Peters, 1879 -- valid -- Slender Spade-snouted Worm Lizard
  Monopeltis vanderysti de Witte, 1922 -- valid -- Vanderyst Worm Lizard
  Monopeltis vanderysti closei Laurent, 1954 -- valid
  Monopeltis vanderysti lujae de Witte, 1922 -- valid
  Monopeltis vanderysti vanderysti de Witte, 1922 -- valid
  Monopeltis welwitschii (Gray, 1865) -- valid
  Monopeltis zambezensis Gans and Broadley, 1974 -- valid
  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 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
  Morethia adelaidensis (Peters, 1874) -- valid -- Saltbush Morethia Skink
  Morethia boulengeri (Ogilby, 1890) -- valid -- South-eastern Morethia Skink
  Morethia butleri (Storr, 1963) -- valid -- Woodland Morethia Skink
  Morethia lineoocellata (A. M. C. Duméril and Bibron, 1839) -- valid -- West Coast Morethia Skink, Western Pale-flecked Morethia
  Morethia obscura Storr, 1972 -- valid -- Shrubland Morethia Skink
  Morethia ruficauda (Lucas and Frost, 1895) -- valid -- Lined Firetail Skink
  Morethia ruficauda exquisita Storr, 1972 -- valid
  Morethia ruficauda ruficauda (Lucas and Frost, 1895) -- valid
  Morethia storri Greer, 1981 -- valid -- Top End Firetail Skink
  Morethia taeniopleura (Peters, 1874) -- valid -- North-eastern Firetail Skink, Fire-Tailed Skink
  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
  Namazonurus campbelli (Fitzsimons, 1938) -- valid -- Campbell's Girdled Lizard
  Namazonurus lawrenci (Fitzsimons, 1939) -- valid -- Lawrence's Nama Lizard, Lawrence's Girdled Lizard
  Namazonurus namaquensis (Methuen and Hewitt, 1914) -- valid -- Namaqua Girdled Lizard
  Namazonurus peersi (Hewitt, 1932) -- valid -- Peers' Nama Lizard, Peers' Girdled Lizard
  Namazonurus pustulatus (Peters, 1862) -- valid -- Herero Girdled Lizard
  Nangura spinosa Covacevich, Couper and James, 1993 -- valid -- Nangur Skink, Nangur Spiny Skink
  Nannoscincus exos Bauer and Sadlier, 2000 -- valid
  Nannoscincus garrulus Sadlier, Bauer and Smith, 2006 -- valid
  Nannoscincus gracilis (Bavay, 1869) -- valid -- New Caledonian Gracile Dwarf Skink, Slender Elf Skink
  Nannoscincus greeri Sadlier, 1987 -- valid -- Greer's Elf Skink
  Nannoscincus hanchisteus Bauer and Sadlier, 2000 -- valid
  Nannoscincus humectus Bauer and Sadlier, 2000 -- valid
  Nannoscincus manautei Sadlier, Bauer, Whitaker and Smith, 2004 -- valid
  Nannoscincus mariei (Bavay, 1869) -- valid
  Nannoscincus rankini Sadlier, 1987 -- valid -- Rankin's Elf Skink
  Nannoscincus slevini (Loveridge, 1941) -- valid -- Slevin's Elf Skink
  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 angelii Bourret, 1934 -- invalid
  Natrix atemporalis Bourret, 1934 -- invalid
  Natrix barbouri Taylor, 1922 -- invalid
  Natrix bitaeniata Wall, 1925 -- invalid
  Natrix boulengeri Gressitt, 1937 -- 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 groundwateri M. A. Smith, 1922 -- invalid
  Natrix helleri Schmidt, 1925 -- invalid
  Natrix leonardi Wall, 1923 -- invalid
  Natrix mairii multiscutellata Brongersma, 1948 -- invalid
  Natrix maura (Linnaeus, 1758) -- valid -- Viperine Water Snake
  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 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 sipedon williamengelsi Conant and Lazell, 1973 -- 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
  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
  Nessia bipes Smith, 1935 -- valid -- Two-legged Nessia
  Nessia burtonii Gray, 1839 -- valid -- Burton's Nessia
  Nessia deraniyagalai Taylor, 1950 -- valid -- Deraniyagala's Nessia
  Nessia didactyla (Deraniyagala, 1934) -- valid -- Two-toed Nessia
  Nessia hickanala Deraniyagala, 1940 -- valid -- Hickanala Nessia
  Nessia layardi (Kelaart, 1853) -- valid -- Layard's Nessia
  Nessia monodactyla (Gray, 1839) -- valid -- One-toed Nessia
  Nessia sarasinorum (Müller, 1889) -- valid -- Muller's Nessia
  Neusticurus bicarinatus (Linnaeus, 1758) -- valid -- Two-faced Neusticurus
  Neusticurus medemi Dixon and Lamar, 1981 -- valid -- Medem's Neusticurus
  Neusticurus racenisi Roze, 1958 -- valid -- Common Venezuelan Water Teiid, Roze's Neusticurus
  Neusticurus rudis Boulenger, 1900 -- valid -- Red Neusticurus
  Neusticurus tatei (Burt and Burt, 1931) -- valid -- Tate's Neusticurus
  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 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
  Ninurta coeruleopunctatus (Hewitt and Methuen, 1913) -- valid -- Blue-spotted Lizard, Blue-spotted Girdled Lizard
  Niveoscincus coventryi (Rawlinson, 1975) -- invalid
  Niveoscincus greeni (Rawlinson, 1975) -- invalid
  Niveoscincus metallicus (O'Shaughnessy, 1874) -- invalid
  Niveoscincus microlepidotus (O'Shaughnessy, 1874) -- invalid
  Niveoscincus ocellatus (Gray, 1845) -- invalid
  Niveoscincus orocryptus (Hutchinson, Schwaner and Medlock, 1988) -- invalid
  Niveoscincus palfreymani (Rawlinson, 1974) -- invalid
  Niveoscincus pretiosus (O'Shaughnessy, 1874) -- invalid
  Nothobachia ablephara Rodrigues, 1984 -- valid
  Nothopsis rugosus Cope, 1871 -- valid -- Rough Coffee Snake
  Notomabuya frenata (Cope, 1862) -- valid -- Cope's Mabuya
  Notoscincus butleri Storr, 1979 -- valid -- Lined Soil-crevis Skink
  Notoscincus ornatus (Broom, 1896) -- valid -- Ornate Soil-crevice Skink
  Notoscincus ornatus ornatus (Broom, 1896) -- valid
  Notoscincus ornatus wotjulum (Glauert, 1959) -- valid
  Nubeoscincus glacialis (Greer, Allison and Cogger, 2005) -- valid
  Nubeoscincus stellaris (Greer, Allison and Cogger, 2005) -- valid
  Nucras boulengeri Neumann, 1900 -- valid -- Uganda Savannah Lizard, Boulenger's Scrub Lizard
  Nucras boulengeri kilosae Loveridge, 1922 -- invalid
  Nucras caesicaudata Broadley, 1972 -- valid -- Bluetailed Sandveld Lizard, Bluetail Scrub Lizard
  Nucras damarana Parker, 1936 -- valid
  Nucras holubi (Steindachner, 1882) -- valid -- Holub's Sandveld Lizard
  Nucras intertexta (Smith, 1838) -- valid -- Spotted Sandveld Lizard
  Nucras lalandii (Milne-Edwards, 1829) -- valid -- Delalande's Sandveld Lizard, Laland's Lizard, Delalande's Spotted Lizard
  Nucras livida (Smith, 1838) -- valid -- Karoo Sandveld Lizard
  Nucras ornata (Gray, 1864) -- valid -- Ornate Sandveld Lizard, Ornate Scrub Lizard
  Nucras scalaris Laurent, 1964 -- valid -- Scaled Sandveld Lizard
  Nucras taeniolata (Smith, 1838) -- valid -- Albany Sandveld Lizard, Striped Scrub Lizard
  Nucras tessellata (Smith, 1838) -- valid -- Western Sandveld Lizard, Tiger Lizard, Striped Sandveld Lizard, Banded Sand Lizard, Striped Sand Lizard
  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 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 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 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 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 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 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 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
  Oligosoma acrinasum (Hardy, 1977) -- valid -- Fiordland Skink
  Oligosoma aeneum (Girard, 1858) -- valid -- Copper Skink
  Oligosoma alani (Robb, 1970) -- valid -- Robust Skink, Alan's Skink
  Oligosoma burganae Chapple, Bell, Chapple, Miller, Daugherty and Patterson, 2011 -- valid -- Burgan Skink
  Oligosoma chloronoton (Hardy, 1977) -- valid
  Oligosoma fallai (McCann, 1955) -- valid
  Oligosoma grande (Gray, 1845) -- valid -- Grand Skink
  Oligosoma hardyi (Chapple, Patterson, Bell and Daugherty, 2008) -- valid -- Hardy's Skink
  Oligosoma homalonotum (Boulenger, 1906) -- valid -- Chevron Skink
  Oligosoma inconspicuum (Patterson and Daugherty, 1990) -- valid
  Oligosoma infrapunctatum (Boulenger, 1887) -- valid -- Boulenger's Speckled Skink, Cobble Skink, Speckled Skink
  Oligosoma judgei Patterson and Bell, 2009 -- valid -- Barrier Skink
  Oligosoma kakerakau Barr, Chapple, Hitchmough, Patterson and Ngatiwai Trust Board, 2021 -- valid
  Oligosoma levidensum (Chapple, Patterson, Bell and Daugherty, 2008) -- valid -- Slight Skink
  Oligosoma lichenigerum (O'Shaughnessy, 1874) -- valid -- Lord Howe and Norfolk Islands Skink
  Oligosoma lineoocellatum (A. H. A. Duméril in A. M. C. Duméril and A. H. A. Duméril, 1851) -- valid -- Canterbury Spotted Skink
  Oligosoma longipes Patterson, 1997 -- valid -- Long-toed Skink
  Oligosoma maccanni (Hardy, 1977) -- valid -- McCann's Skink
  Oligosoma macgregori (Robb, 1975) -- valid -- MacGregor's Skink
  Oligosoma microlepis (Patterson and Daugherty, 1990) -- valid -- Small-scaled Skink
  Oligosoma moco (A. M. C. Duméril and Bibron, 1839) -- valid
  Oligosoma nigriplantare (Peters, 1874) -- valid
  Oligosoma northlandi (Worthy, 1991) -- valid
  Oligosoma notosaurus (Patterson and Daugherty, 1990) -- valid -- Southern Skink
  Oligosoma oliveri (McCann, 1955) -- valid -- Marbled Skink, Oliver's New Zealand Skink
  Oligosoma ornatum (Gray, 1843) -- valid -- Gray's Ornate Skink
  Oligosoma otagense (McCann, 1955) -- valid -- Otago Skink
  Oligosoma pikitanga Bell and Patterson, 2008 -- valid -- Sinbad Skink
  Oligosoma polychroma (Patterson and Daugherty, 1990) -- valid -- Southern Grass Skink, Common New Zealand Skink
  Oligosoma repens Chapple, Bell, Chapple, Miller, Daugherty and Patterson, 2011 -- valid -- Eyres Skink
  Oligosoma roimata Patterson, Hitchmough and Chapple, 2013 -- valid -- Aorangi Skink
  Oligosoma smithi (Gray, 1845) -- valid -- Shore Skink
  Oligosoma stenotis (Patterson and Daugherty, 1994) -- valid -- Small-eared Skink
  Oligosoma striatum (Buller, 1871) -- valid -- Striped Skink
  Oligosoma suteri (Boulenger, 1906) -- valid -- Suter's Skink, Egg-laying Skink
  Oligosoma taumakae Chapple and Patterson, 2007 -- valid -- Taumaka Skink, Open Bay Islands Skink
  Oligosoma tekakahu Chapple, Bell, Chapple, Miller, Daugherty and Patterson, 2011 -- valid -- Te Kakahu Skink
  Oligosoma toka Chapple, Bell, Chapple, Miller, Daugherty and Patterson, 2011 -- valid -- Nevis Skink
  Oligosoma townsi (Chapple, Patterson, Gleeson, Daugherty and Ritchie, 2008) -- valid -- Towns' Skink
  Oligosoma waimatense (McCann, 1955) -- valid -- Scree Skink
  Oligosoma whitakeri (Hardy, 1977) -- valid -- Whitaker's New Zealand Skink
  Oligosoma zelandicum (Gray, 1843) -- valid -- Brown Skink
  Omanosaura cyanura (Arnold, 1972) -- valid -- Blue-tailed Oman Lizard
  Omanosaura jayakari (Boulenger, 1887) -- valid -- Jayakar Lizard, Jayakar's Oman Lizard
  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
  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
  Ophiodes fragilis (Raddi, 1826) -- valid -- Fragile Worm Lizard
  Ophiodes intermedius Boulenger, 1894 -- valid
  Ophiodes striatus (Spix, 1824) -- valid -- Striped Worm Lizard
  Ophiodes vertebralis Bocourt, 1881 -- valid -- Jointed Worm Lizard
  Ophiodes yacupoi Gallardo, 1966 -- invalid
  Ophiomorus blanfordii Boulenger, 1887 -- valid -- Blanford's Snake Skink
  Ophiomorus brevipes (Blanford, 1874) -- valid -- Short-legged Snake Skink
  Ophiomorus chernovi Anderson and Leviton, 1966 -- valid -- Chernov's Snake Skink
  Ophiomorus latastii Boulenger, 1887 -- valid -- Latast's Snake Skink
  Ophiomorus maranjabensis Kazemi, Farhadi Qomi, Kami and Anderson, 2011 -- valid -- Maranjab's Snake Skink
  Ophiomorus nuchalis Nilson and Andren, 1978 -- valid -- Nilson's Snake Skink, Plateau Snake Skink
  Ophiomorus persicus (Steindachner, 1867) -- valid -- Persian Snake Skink
  Ophiomorus punctatissimus (Bibron and Bory de Saint-Vincent, 1833) -- valid -- Greek Snake Skink
  Ophiomorus raithmai Anderson and Leviton, 1966 -- valid -- Eastern Sand Swimmer
  Ophiomorus streeti Anderson and Leviton, 1966 -- valid -- Street's Snake Skink
  Ophiomorus tridactylus (Blyth, 1853) -- valid -- Three-toed Snake Skink, Indian Sand Swimmer
  Ophioscincus cooloolensis Greer and Cogger, 1985 -- valid -- Cooloola Snake-skink
  Ophioscincus ophioscincus (Boulenger, 1887) -- valid -- Yolk-bellied Snake-skink
  Ophioscincus truncatus (Peters, 1876) -- valid -- Short-limbed Snake-skink
  Ophioscincus truncatus monswilsonensis Copland, 1952 -- invalid
  Ophisaurus attenuatus Baird in Cope, 1880 -- valid -- Slender Glass Lizard
  Ophisaurus attenuatus attenuatus Baird in Cope, 1880 -- valid -- Western Slender Glass Lizard
  Ophisaurus attenuatus longicaudus McConkey, 1952 -- valid -- Eastern Slender Glass Lizard
  Ophisaurus ceroni Holman, 1965 -- valid -- Lagarto de cristal de Ceron, Ceron's Glass Lizard
  Ophisaurus compressus Cope, 1900 -- valid -- Island Glass Lizard
  Ophisaurus koellikeri (Günther, 1873) -- invalid -- Koelliker's Glass Lizard
  Ophisaurus mimicus Palmer, 1987 -- valid -- Mimic Glass Lizard
  Ophisaurus ventralis (Linnaeus, 1766) -- valid -- Eastern Glass Lizard
  Ophisops beddomei (Jerdon, 1870) -- valid -- Beddome's Lacerta
  Ophisops elbaensis Schmidt and Marx, 1957 -- valid -- Mount Elba Snake-eyed Lizard
  Ophisops elegans Ménétries, 1832 -- valid -- Snake-eyed Lizard
  Ophisops elegans basoglui Baran and Budak, 1978 -- valid
  Ophisops elegans blanfordi Schmidt, 1939 -- valid
  Ophisops elegans centralanatoliae Bodenheimer, 1944 -- valid
  Ophisops elegans ehrenbergii (Wiegmann, 1835) -- valid
  Ophisops elegans elegans Ménétriés, 1832 -- valid
  Ophisops elegans macrodactylus Berthold, 1840 -- valid
  Ophisops elegans persicus Boulenger, 1918 -- invalid
  Ophisops elegans schlueteri Boettger, 1880 -- valid
  Ophisops jerdonii Blyth, 1853 -- valid -- Punjab-Snake-eyed Lacerta, Jerdon's Snake Eye
  Ophisops leschenaultii (Milne-Edwards, 1829) -- valid -- Leschenault's Snake-eyed Lizard, Leschenault's Lacerta
  Ophisops leschenaultii lankae Deraniyagala, 1953 -- valid
  Ophisops leschenaultii leschenaultii (Milne-Edwards, 1829) -- valid
  Ophisops microlepis Blanford, 1870 -- valid -- Small-scaled Lacerta
  Ophisops minor (Deraniyagala, 1971) -- valid -- Lesser Snake-eyed Lacerta
  Ophisops minor nictans Arnold, 1989 -- invalid
  Ophisops occidentalis Boulenger, 1887 -- valid
  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
  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
  Ornithuroscincus albodorsalis (Vogt, 1932) -- valid
  Ornithuroscincus noctua (Lesson, 1830) -- valid -- Moth Skink
  Ornithuroscincus nototaenia (Boulenger, 1914) -- valid
  Ornithuroscincus sabini (Kraus, 2020) -- valid
  Orosaura nebulosylvestris (Miralles, Rivas, Bonillo, Schargel, Barros, García-Perez and Barrio-Amorós, 2009) -- valid -- Venezuelan Mountain Skink
  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
  Otosaurus cumingii Gray, 1845 -- valid -- Cuming's Sphenomorphus
  Ouroborus cataphractus (Boie, 1828) -- valid -- Armadillo Girdled Lizard
  Ovophis convictus (Stoliczka, 1870) -- valid -- Indo-Malayan 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
  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 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 vanidicus Lynch, 2009 -- valid
  Pachycalamus brevis Günther, 1881 -- valid -- Short Worm Lizard
  Palaia pulchra (Boulenger, 1903) -- valid
  Pamelaescincus gardineri (Boulenger, 1909) -- valid
  Panaspis breviceps (Peters, 1873) -- valid -- Shorted-headed Snake-eyed Skink, Peters' Lidless Skink, Peters' Snake-eyed Skink
  Panaspis burgeoni (De Witte, 1933) -- valid
  Panaspis cabindae (Bocage, 1866) -- valid -- Cabinda Snake-eyed Skink, Cabinda Lidless Skink
  Panaspis helleri (Loveridge, 1932) -- valid
  Panaspis megalurus (Nieden, 1913) -- valid -- Blue-tailed Snake-eyed Skink
  Panaspis tancredii (Boulenger, 1909) -- valid -- Ethiopian Snake-Eyed Skink
  Panaspis togoensis (Werner, 1902) -- valid -- Togo Lidless Skink
  Panopa carvalhoi (Reboucas-Spieker and Vanzolini, 1990) -- valid -- Carvalho's Mabuya
  Panopa croizati (Horton, 1973) -- valid -- Horton's Mabuya
  Pantepuisaurus rodriguesi Kok, 2009 -- 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
  Papuascincus morokanus (Parker, 1936) -- valid
  Papuascincus phaeodes (Vogt, 1932) -- valid
  Papuascincus stanleyanus (Boulenger, 1897) -- valid
  Paracontias brocchii Mocquard, 1894 -- valid -- Stone Skink
  Paracontias fasika Köhler, Vences, Erbacher and Glaw, 2010 -- valid
  Paracontias hafa Andreone and Greer, 2002 -- valid
  Paracontias hildebrandti (Peters, 1880) -- valid -- Hildebrand's Skink
  Paracontias holomelas (Günther, 1877) -- valid -- Anzahamaru Skink
  Paracontias kankana Köhler, Vieites, Glaw, Kaffenberger and Vences, 2009 -- valid
  Paracontias manify Andreone and Greer, 2002 -- valid
  Paracontias milloti Angel, 1949 -- valid -- Nosy Mamoko Skink
  Paracontias minimus (Mocquard, 1906) -- valid
  Paracontias rothschildi Mocquard, 1905 -- valid -- Rothschild's Skink
  Paracontias tsararano Andreone and Greer, 2002 -- valid
  Paracontias vermisaurus Miralles, Köhler, Vieites, Glaw and Vences, 2011 -- valid
  Parahelicops Bourret, 1934 -- valid
  Parahelicops annamensis Bourret, 1934 -- valid -- Annam Keelback
  Parahelicops boonsongi Taylor and Elbel, 1958 -- invalid
  Paraphimophis rusticus (Cope, 1878) -- valid -- Culebra
  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
  Paratapinophis Angel, 1929 -- valid
  Paratapinophis praemaxillaris Angel, 1929 -- valid -- Brown Stream Snake, Angel's Mountain Keelback
  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 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
  Pareatidae -- invalid
  Parvilacerta fraasii (Lehrs, 1910) -- valid -- Fraas' Lizard
  Parvilacerta parva (Boulenger, 1887) -- valid -- Dwarf Lizard
  Parvoscincus abstrusus Linkem and Brown, 2013 -- valid
  Parvoscincus agtorum Linkem and Brown, 2013 -- valid
  Parvoscincus arvindiesmosi Linkem and Brown, 2013 -- valid
  Parvoscincus aurorus Linkem and Brown, 2013 -- valid
  Parvoscincus banahaoensis Linkem and Brown, 2013 -- valid
  Parvoscincus beyeri (Taylor, 1922) -- valid -- Beyer's Sphenomorphus
  Parvoscincus boyingi (Brown, Linkem, Diesmos, Balete, Duya and Ferner, 2010) -- valid -- Boying's Zambales Mountain Skink
  Parvoscincus decipiens (Boulenger, 1895) -- valid -- Black-sided Sphenomorphus
  Parvoscincus hadros (Brown, Linkem, Diesmos, Balete, Duya and Ferner, 2010) -- valid -- Aurora Mountain Skink
  Parvoscincus igorotorum (Brown, Linkem, Diesmos, Balete, Duya and Ferner, 2010) -- valid -- Igorot Cordillera Mountains Skink
  Parvoscincus jimmymcguirei Linkem and Brown, 2013 -- valid
  Parvoscincus kitangladensis (Brown, 1995) -- valid
  Parvoscincus laterimaculatus (Brown and Alcala, 1980) -- valid
  Parvoscincus lawtoni (Brown and Alcala, 1980) -- valid
  Parvoscincus leucospilos (Peters, 1872) -- valid -- White-spotted Sphenomorphus
  Parvoscincus luzonensis (Boulenger, 1895) -- valid -- Highland Sphenomorphus
  Parvoscincus palaliensis Linkem and Brown, 2013 -- valid
  Parvoscincus palawanensis (Brown and Alcala, 1961) -- valid
  Parvoscincus sisoni Ferner, Brown and Greer, 1997 -- valid
  Parvoscincus steerei (Stejneger, 1908) -- valid -- Steere's Sphenomorphus
  Parvoscincus tagapayo (Brown, McGuire, Ferner and Alcala, 1999) -- valid -- Aurora Mountain Skink
  Pedioplanis benguellensis (Bocage, 1867) -- valid -- Bocage's Sand Lizard
  Pedioplanis branchi Childers, Kirchhof and Bauer, 2021 -- valid
  Pedioplanis breviceps (Sternfeld, 1911) -- valid -- Short-headed Sandveld Lizard, Sternfeld's Sand Lizard
  Pedioplanis burchelli (Duméril and Bibron, 1839) -- valid -- Burchell's Sand Lizard
  Pedioplanis gaerdesi (Mertens, 1954) -- valid -- Kaokoland Sand Lizard, Mayer's Sand Lizard
  Pedioplanis haackei Conradie, Measey, Branch and Tolley, 2012 -- valid
  Pedioplanis huntleyi Conradie, Measey, Branch and Tolley, 2012 -- valid
  Pedioplanis husabensis Berger-Dell'mour and Mayer, 1989 -- valid -- Husab Sand Lizard
  Pedioplanis inornata (Roux, 1907) -- valid -- Western Sand Lizard, Plain Sand Lizard
  Pedioplanis laticeps (Smith, 1845) -- valid -- Karoo Sand Lizard
  Pedioplanis lineoocellata (Duméril and Bibron, 1839) -- valid -- Spotted Sand Lizard, Ocellated Sand Lizard
  Pedioplanis lineoocellata inocellata (Mertens, 1955) -- valid
  Pedioplanis lineoocellata lineoocellata (Duméril and Bibron, 1839) -- valid -- Spotted Sand Lizard, Ocellated Sand Lizard
  Pedioplanis lineoocellata pulchella (Gray, 1845) -- valid -- Common Sand Lizard
  Pedioplanis mayeri Childers, Kirchhof and Bauer, 2021 -- valid
  Pedioplanis namaquensis (Duméril and Bibron, 1839) -- valid -- Namaqua Sand Lizard
  Pedioplanis rubens (Mertens, 1954) -- valid -- Ruben's Sand Lizard
  Pedioplanis undata (Smith, 1838) -- valid -- Western Sand Lizard, Plain Sand Lizard
  Pelophis schoutedeni de Witte, 1942 -- invalid
  Petracola labioocularis (Köhler and Lehr, 2004) -- valid
  Petracola ventrimaculatus (Boulenger, 1900) -- valid -- Spotted Lightbulb Lizard
  Petracola waka Kizirian, Bayefsky-Anand, Eriksson, Minh Le and Donnelly, 2008 -- valid
  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 sansebastiani Jansen and Köhler, 2008 -- valid
  Phalotris tricolor (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Tricolored Burrowing Snake
  Philochortus hardeggeri (Steindachner, 1891) -- valid -- Hardegger's Orangetail Lizard, Hardegger's Shield-backed Lizard
  Philochortus intermedius Boulenger, 1917 -- valid -- Southern Orangetail Lizard, Shield-backed Ground Lizard, Boulenger's Shield-backed Lizard
  Philochortus neumanni Matschie, 1893 -- valid -- Neumann's Orangetail Lizard
  Philochortus phillipsi (Boulenger, 1898) -- valid -- Philipps' Shield-backed Lizard
  Philochortus spinalis (Peters, 1874) -- valid -- Peters' Shield-backed Lizard, Eritrea Orangetail Lizard
  Philochortus zolii Scortecci, 1934 -- valid
  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 argentea (Daudin, 1803) -- valid -- Striped Sharpnose Snake
  Philodryas baroni Berg, 1895 -- valid -- Baron's Green Racer
  Philodryas chamissonis (Wiegmann, 1835) -- valid -- Chilean Green Racer
  Philodryas cordata Donnelly and Myers, 1991 -- valid
  Philodryas georgeboulengeri Grazziotin, Zaher, Murphy, Scrocchi, Benavides, Zhang and Bonatto, 2012 -- valid -- Southern Sharpnose Snake
  Philodryas laticeps Werner, 1900 -- valid
  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 tachymenoides (Schmidt and Walker, 1943) -- valid -- Schmidt's Green Racer
  Philodryas trilineata (Burmeister, 1861) -- valid
  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 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 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 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 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
  Phoboscincus bocourti (Brocchi, 1876) -- valid -- Bocourt's Terrific Skink, Bocourt's Eyelid Skink
  Phoboscincus garnieri (Bavay, 1869) -- valid -- Garnier's Skinks
  Phoenicolacerta cyanisparsa (Schmidtler and Bischoff, 1999) -- valid
  Phoenicolacerta kulzeri (Müller and Wettstein, 1932) -- valid -- Kulzer's Rock Lizard
  Phoenicolacerta kulzeri khazaliensis Modry, Necas, Rifai, Bischoff, Hamidan and Amr, 2013 -- valid
  Phoenicolacerta kulzeri kulzeri (Müller and Wettstein, 1932) -- valid
  Phoenicolacerta kulzeri petraea (Bischoff and Müller, 1999) -- valid
  Phoenicolacerta laevis (Gray, 1838) -- valid -- Lebanon Lizard
  Phoenicolacerta troodica (Werner, 1936) -- valid
  Pholidobolus affinis (Peters, 1863) -- valid -- Peters' Pholiodobolus
  Pholidobolus anomalus Müller, 1923 -- invalid -- Strange Pholiodobolus
  Pholidobolus macbrydei Montanucci, 1973 -- valid -- MacBryde's Pholiodobolus
  Pholidobolus montium (Peters, 1863) -- valid -- Mountain Pholiodobolus
  Pholidobolus prefrontalis Montanucci, 1973 -- valid -- Montanucci's Pholiodobolus
  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
  Pinoyscincus abdictus (Brown and Alcala, 1980) -- valid
  Pinoyscincus abdictus abdictus (Brown and Alcala, 1980) -- valid
  Pinoyscincus abdictus aquilonius (Brown and Alcala, 1980) -- valid
  Pinoyscincus coxi (Taylor, 1915) -- valid
  Pinoyscincus coxi coxi (Taylor, 1915) -- valid
  Pinoyscincus coxi divergens (Taylor, 1922) -- valid
  Pinoyscincus jagori (Peters, 1864) -- valid -- Jagor's Sphenomorphus
  Pinoyscincus jagori grandis (Taylor, 1922) -- valid
  Pinoyscincus jagori jagori (Peters, 1864) -- valid
  Pinoyscincus llanosi (Taylor, 1919) -- valid -- Leyte Sphenomorphus
  Pinoyscincus mindanensis (Taylor, 1915) -- valid -- Mindanao Sphenomorphus
  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 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
  Placosoma cipoense Cunha, 1966 -- valid -- Cunha's Brazilian Lizard
  Placosoma cordylinum Tschudi, 1847 -- valid
  Placosoma cordylinum champsonotus (Werner, 1910) -- valid
  Placosoma cordylinum cordylinum Tschudi, 1847 -- valid
  Placosoma glabellum (Peters, 1870) -- valid
  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
  Platyceps afarensis Schätti and Ineich, 2004 -- valid
  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 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 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 somalicus (Boulenger, 1896) -- valid -- Ogaden Racer
  Platyceps tessellata (Werner, 1910) -- valid
  Platyceps variabilis (Boulenger, 1905) -- valid -- Variable Snake
  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
  Platyplectrurus Günther, 1868 -- valid
  Platyplectrurus madurensis Beddome, 1877 -- valid -- Travancore Hills Thorntail Snake
  Platyplectrurus madurensis madurensis Beddome, 1877 -- valid
  Platyplectrurus madurensis ruhunae Deraniyagala, 1954 -- valid
  Platyplectrurus trilineatus (Beddome, 1867) -- valid -- Lined Thorntail Snake
  Platysaurus broadleyi Branch and Whiting, 1997 -- valid -- Augrabies Flat Lizard, Broadley's Flat Lizard
  Platysaurus capensis Smith, 1844 -- valid -- Namaqua Flat Lizard, Cape Flat Lizard
  Platysaurus guttatus Smith, 1849 -- valid -- Dwarf Flat Lizard, Lesser Flat Lizard
  Platysaurus imperator Broadley, 1962 -- valid -- Imperial Flat Lizard, Emperor Flat Lizard
  Platysaurus intermedius Matschie, 1891 -- valid -- Common Flat Lizard
  Platysaurus intermedius inopinus Jacobsen, 1994 -- valid -- Unexpected Flat Lizard
  Platysaurus intermedius intermedius Matschie, 1891 -- valid -- Common Flat Lizard
  Platysaurus intermedius natalensis Fitzsimons, 1948 -- valid -- Kwazulu-Natal Flat Lizard
  Platysaurus intermedius nigrescens Broadley, 1981 -- valid
  Platysaurus intermedius nyasae Loveridge, 1953 -- valid
  Platysaurus intermedius parvus Broadley, 1976 -- valid -- Blouberg Flat Lizard
  Platysaurus intermedius rhodesianus Fitzsimons, 1941 -- valid -- Zimbabwe Flat Lizard
  Platysaurus intermedius subniger Broadley, 1962 -- valid
  Platysaurus intermedius wilhelmi Hewitt, 1909 -- valid -- Wilhelm's Flat Lizard
  Platysaurus lebomboensis Jacobsen, 1994 -- valid -- Lebombo Flat Lizard
  Platysaurus maculatus Broadley, 1965 -- valid -- Spotted Flat Lizard
  Platysaurus maculatus lineicauda Broadley, 1965 -- valid
  Platysaurus maculatus maculatus Broadley, 1965 -- valid
  Platysaurus minor Fitzsimons, 1930 -- valid -- Waterberg Flat Lizard
  Platysaurus mitchelli Loveridge, 1953 -- valid -- Mitchell's Flat Lizard
  Platysaurus monotropis Jacobsen, 1994 -- valid -- Orange-throated Flat Lizard
  Platysaurus ocellatus Broadley, 1962 -- valid -- Chimanimani Flat Lizard
  Platysaurus orientalis Fitzsimons, 1941 -- valid -- Sekhukhune Flat Lizard
  Platysaurus orientalis fitzsimonsi Loveridge, 1944 -- valid -- Fitzsimons' Flat Lizard
  Platysaurus orientalis orientalis Fitzsimons, 1941 -- valid -- Sekhukhune Flat Lizard
  Platysaurus pungweensis Broadley, 1959 -- valid -- Pungwe Flat Lizard
  Platysaurus pungweensis blakei Broadley, 1964 -- valid
  Platysaurus pungweensis pungweensis Broadley, 1959 -- valid
  Platysaurus relictus Broadley, 1976 -- valid -- Soutpansberg Flat Lizard, Transvaal Flat Lizard
  Platysaurus torquatus Peters, 1879 -- valid -- Collared Flat Lizard
  Plectrurus A. M. C. Duméril and Bibron in A. M. C. Duméril and A. H. A. Duméril, 1851 -- valid
  Plectrurus aureus Beddome, 1880 -- valid -- Kerala Burrowing Snake
  Plectrurus canaricus (Beddome, 1870) -- invalid
  Plectrurus guentheri Beddome, 1863 -- valid -- Günther's Burrowing Snake
  Plectrurus perroteti A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Nilgiri Burrowing Snake, Perrotet's Shieldtail
  Plesiodipsas perijanensis (Aleman, 1953) -- valid -- Aleman's Snail-eater
  Plestiodon anthracinus Baird, 1849 -- valid -- Coal Skink
  Plestiodon anthracinus anthracinus Baird, 1849 -- valid -- Northern Coal Skink
  Plestiodon anthracinus pluvialis (Cope, 1880) -- valid -- Southern Coal Skink
  Plestiodon barbouri (Van Denburgh, 1912) -- valid -- Barbour's Eyelid Skink
  Plestiodon bilineatus (Tanner, 1958) -- valid
  Plestiodon brevirostris (Günther, 1860) -- valid -- Shortnose Skink, Eslizón chato
  Plestiodon brevirostris brevirostris (Günther, 1860) -- valid
  Plestiodon brevirostris pineus (Axtell, 1960) -- valid
  Plestiodon callicephalus (Bocourt, 1879) -- valid -- Mountain Skink
  Plestiodon capito (Bocourt, 1879) -- valid -- Gail's Eyelid Skink
  Plestiodon chinensis (Gray, 1838) -- valid -- Chinese Blue-tailed Skink
  Plestiodon chinensis chinensis (Gray, 1838) -- valid
  Plestiodon chinensis daishanensis Mao, 1983 -- valid
  Plestiodon chinensis formosensis (Van Denburgh, 1912) -- valid
  Plestiodon chinensis pulcher A. M. C. Duméril and Bibron, 1839 -- valid
  Plestiodon colimensis (Taylor, 1935) -- valid -- Colima Skink, Eslizón de Colima
  Plestiodon copei (Taylor, 1933) -- valid -- Cope's Skink, Eslizón de Cope
  Plestiodon coreensis (Doi and Kamita, 1937) -- valid -- Smith's Skink
  Plestiodon dicei (Ruthven and Gaige, 1933) -- valid
  Plestiodon dugesii (Thominot, 1883) -- valid -- Duges' Skink
  Plestiodon egregius Baird, 1858 -- valid -- Mole Skink
  Plestiodon egregius egregius Baird, 1858 -- valid -- Florida Keys Mole Skink
  Plestiodon egregius insularis (Mount, 1965) -- valid -- Cedar Key Mole Skink
  Plestiodon egregius lividus (Mount, 1965) -- valid -- Bluetail Mole Skink, Blue-tailed Mole Skink
  Plestiodon egregius onocrepis Cope, 1871 -- valid -- Peninsula Mole Skink
  Plestiodon egregius similis (McConkey, 1957) -- valid -- Northern Mole Skink
  Plestiodon elegans (Boulenger, 1887) -- valid -- Shanghai Elegant Skink
  Plestiodon fasciatus (Linnaeus, 1758) -- valid -- Five-lined Skink, Common Five-lined Skink
  Plestiodon finitimus Okamoto and Hikida, 2012 -- valid -- Far Eastern Skink
  Plestiodon gilberti (Van Denburgh, 1896) -- valid -- Gilbert's Skink
  Plestiodon gilberti cancellosus (Rodgers and Fitch, 1947) -- valid -- Variegated Skink
  Plestiodon gilberti gilberti (Van Denburgh, 1896) -- valid -- Greater Brown Skink
  Plestiodon gilberti placerensis (Rodgers, 1944) -- valid -- Northern Brown Skink
  Plestiodon gilberti rubricaudatus (Taylor, 1936) -- valid -- Western Redtail Skink, Western Red-tailed Skink
  Plestiodon indubitus (Taylor, 1933) -- valid
  Plestiodon inexpectatus (Taylor, 1932) -- valid -- Southeastern Five-lined Skink
  Plestiodon japonicus (Peters, 1864) -- valid
  Plestiodon kishinouyei (Stejneger, 1901) -- valid -- Kishinoue's Giant Skink, Japanese Skink
  Plestiodon lagunensis (Van Denburgh, 1895) -- valid -- San Lucan Skink, Eslizón de San Lucas
  Plestiodon laticeps (Schneider, 1801) -- valid -- Broadhead Skink, Broad-headed Skink
  Plestiodon latiscutatus Hallowell, 1861 -- valid -- Far Eastern Skink, Japanese Five-lined Skink
  Plestiodon liui (Hikida and Zhao, 1989) -- valid
  Plestiodon longirostris Cope, 1861 -- valid -- Longnose Skink, Bermuda Skink, Bermuda Rock Lizard
  Plestiodon lynxe (Wiegmann, 1834) -- valid -- Oak Forest Skink, Eslizón encinero
  Plestiodon lynxe bellii Gray, 1845 -- valid
  Plestiodon lynxe furcirostris (Cope, 1885) -- valid
  Plestiodon lynxe lynxe (Wiegmann, 1834) -- valid
  Plestiodon marginatus Hallowell, 1861 -- valid -- Ousima Skink
  Plestiodon marginatus oshimensis (Thompson, 1912) -- invalid
  Plestiodon multilineatus (Tanner, 1957) -- valid -- Chihuahuan Skink, Eslizón de Chihuahua
  Plestiodon multivirgatus Hallowell, 1857 -- valid -- Many-lined Skink
  Plestiodon multivirgatus epipleurotus (Cope, 1880) -- valid -- Many-lined Skink, Variable Skink
  Plestiodon multivirgatus multivirgatus Hallowell, 1857 -- valid -- Northern Many-lined Skink
  Plestiodon nietoi Feria-Ortiz and García-Vázquez, 2012 -- valid
  Plestiodon obsoletus Baird and Girard, 1852 -- valid -- Great Plains Skink
  Plestiodon ochoterenae (Taylor, 1933) -- valid -- Guerreran Skink, Eslizón guerrerense
  Plestiodon parviauriculatus (Taylor, 1933) -- valid -- Northern Pigmy Skink, Eslizón pigmeo-norteño
  Plestiodon parvulus (Taylor, 1933) -- valid -- Southern Pigmy Skink, Eslizón pigmeo-del sur
  Plestiodon popei (Hikida, 1989) -- valid -- Pope's Skink
  Plestiodon quadrilineatus Blyth, 1853 -- valid -- Hong Kong Skink, Four-striped Skink
  Plestiodon reynoldsi (Stejneger, 1910) -- valid -- Florida Sand Skink
  Plestiodon septentrionalis Baird, 1858 -- valid -- Northern Prairie Skink, Prairie Skink
  Plestiodon septentrionalis obtusirostris (Bocourt, 1879) -- valid -- Southern Prairie Skink
  Plestiodon septentrionalis pallidus (Smith and Slater, 1949) -- valid -- Pallid Skink
  Plestiodon septentrionalis septentrionalis Baird, 1858 -- valid -- Northern Prairie Skink
  Plestiodon skiltonianus Baird and Girard, 1852 -- valid -- Western Skink
  Plestiodon skiltonianus brevipes (Cope, 1900) -- valid
  Plestiodon skiltonianus interparietalis (Tanner, 1957) -- valid -- Coronado Island Skink, Coronado Skink
  Plestiodon skiltonianus skiltonianus Baird and Girard, 1852 -- valid -- Western Skink, Skilton's Skink
  Plestiodon skiltonianus utahensis (Tanner, 1957) -- valid -- Great Basin Skink
  Plestiodon stimpsonii (Thompson, 1912) -- valid -- Stimpson's Skink
  Plestiodon sumichrasti (Cope, 1867) -- valid -- Sumichrast's Skink, Eslizón listado
  Plestiodon tamdaoensis (Bourret, 1937) -- valid -- Vietnam Skink
  Plestiodon tetragrammus Baird, 1859 -- valid -- Four-lined Skink
  Plestiodon tetragrammus brevilineatus (Cope, 1880) -- valid -- Short-lined Skink
  Plestiodon tetragrammus tetragrammus Baird, 1859 -- valid -- Four-lined Skink, Long-lined Skink
  Plestiodon tunganus (Stejneger, 1924) -- valid
  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 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
  Podarcis bocagei (Lopez-Seoane, 1885) -- valid
  Podarcis carbonelli Perez Mellado, 1981 -- valid -- Carbonell's Wall Lizard
  Podarcis carbonelli berlengensis Vicente, 1985 -- valid
  Podarcis carbonelli carbonelli Perez Mellado, 1981 -- valid
  Podarcis cretensis (Wettstein, 1952) -- valid
  Podarcis erhardii (Bedriaga, 1882) -- valid
  Podarcis erhardii amorgensis (Werner, 1933) -- valid
  Podarcis erhardii biinsulicola (Wettstein, 1937) -- valid
  Podarcis erhardii buchholzi (Wettstein, 1956) -- valid
  Podarcis erhardii erhardii (Bedriaga, 1882) -- valid
  Podarcis erhardii kinarensis (Wettstein, 1937) -- valid
  Podarcis erhardii levithensis (Wettstein, 1937) -- valid
  Podarcis erhardii livadiaca (Werner, 1902) -- valid
  Podarcis erhardii makariaisi (Wettstein, 1956) -- valid
  Podarcis erhardii megalophthenae (Wettstein, 1937) -- valid
  Podarcis erhardii mykonensis (Werner, 1933) -- valid
  Podarcis erhardii naxensis (Werner, 1899) -- valid
  Podarcis erhardii ophidusae (Wettstein, 1937) -- valid
  Podarcis erhardii pachiae (Wettstein, 1937) -- valid
  Podarcis erhardii phytiusae (Wettstein, 1937) -- valid
  Podarcis erhardii riveti (Chabanaud, 1919) -- valid
  Podarcis erhardii ruthveni (Werner, 1930) -- valid
  Podarcis erhardii subobscura (Wettstein, 1937) -- valid
  Podarcis erhardii syrinae (Wettstein, 1937) -- valid
  Podarcis erhardii thermiensis (Werner, 1935) -- valid
  Podarcis erhardii thessalica (Cyrén, 1938) -- valid
  Podarcis erhardii zafranae (Wettstein, 1937) -- valid
  Podarcis filfolensis (Bedriaga, 1876) -- valid -- Filfola Wall Lizard
  Podarcis filfolensis filfolensis (Bedriaga, 1876) -- valid
  Podarcis filfolensis generalensis (Gulia, 1914) -- valid
  Podarcis filfolensis kieselbachi (Fejervary, 1924) -- valid
  Podarcis filfolensis laurentiimuelleri (Fejervary, 1924) -- valid
  Podarcis filfolensis maltensis Mertens, 1921 -- valid
  Podarcis gaigeae (Werner, 1930) -- valid -- Skyros Wall Lizard
  Podarcis gaigeae weigandi (Gruber and Schultze-Westrum, 1971) -- invalid
  Podarcis hispanicus (Steindachner, 1870) -- valid -- Iberian Wall Lizard
  Podarcis levendis Lymberakis, Poulakakis, Kaliontzopoulou, Valakos and Mylonas, 2008 -- valid
  Podarcis lilfordi (Günther, 1874) -- valid -- Lilford's Wall Lizard
  Podarcis lilfordi addayae (Eisentraut, 1928) -- valid
  Podarcis lilfordi balearica (Bedriaga, 1879) -- valid
  Podarcis lilfordi carbonerae Perez Mellado and Salvador, 1988 -- valid
  Podarcis lilfordi codrellensis Perez Mellado and Salvador, 1988 -- valid
  Podarcis lilfordi colomi (Salvador, 1980) -- valid
  Podarcis lilfordi conejerae (Müller, 1927) -- valid
  Podarcis lilfordi espongicola (Salvador, 1979) -- valid
  Podarcis lilfordi estelicola (Salvador, 1979) -- valid
  Podarcis lilfordi fahrae (Müller, 1927) -- valid
  Podarcis lilfordi fenni (Eisentraut, 1928) -- valid
  Podarcis lilfordi gigliolii (Bedriaga, 1879) -- valid
  Podarcis lilfordi hartmanni (Wettstein, 1937) -- valid
  Podarcis lilfordi imperialensis (Salvador, 1979) -- valid
  Podarcis lilfordi jordansi (Müller, 1927) -- valid
  Podarcis lilfordi kuligae (Müller, 1927) -- valid
  Podarcis lilfordi lilfordi (Günther, 1874) -- valid
  Podarcis lilfordi nigerrima (Salvador, 1979) -- valid
  Podarcis lilfordi planae (Müller, 1927) -- valid
  Podarcis lilfordi pobrae (Salvador, 1979) -- valid
  Podarcis lilfordi porrosicola Perez Mellado and Salvador, 1988 -- valid
  Podarcis lilfordi rodriquezi (Müller, 1927) -- valid
  Podarcis lilfordi sargantanae (Eisentraut, 1928) -- valid
  Podarcis lilfordi toronis (Hartmann, 1953) -- valid
  Podarcis lilfordi xapaticola (Salvador, 1979) -- valid
  Podarcis liolepis (Boulenger, 1905) -- valid -- Columbretes Wall Lizard
  Podarcis melisellensis (Braun, 1877) -- valid -- Dalmatian Wall Lizard
  Podarcis melisellensis aeoli (Radovanovic, 1959) -- valid
  Podarcis melisellensis bokicae (Radovanovic, 1956) -- valid
  Podarcis melisellensis caprina (Radovanovic, 1970) -- invalid
  Podarcis melisellensis curzolensis (Taddei, 1950) -- valid
  Podarcis melisellensis digenea (Wettstein, 1926) -- valid
  Podarcis melisellensis fiumanus (Werner, 1891) -- valid
  Podarcis melisellensis galvagnii (Werner, 1908) -- invalid
  Podarcis melisellensis gigantea (Radovanovic, 1956) -- invalid
  Podarcis melisellensis gigas (Wettstein, 1926) -- valid
  Podarcis melisellensis jidulae (Radovanovic, 1959) -- valid
  Podarcis melisellensis kammereri (Wettstein, 1926) -- valid
  Podarcis melisellensis kornatica (Radovanovic, 1959) -- valid
  Podarcis melisellensis lissana (Werner, 1891) -- valid
  Podarcis melisellensis lupa (Radovanovic, 1970) -- invalid
  Podarcis melisellensis melisellensis (Braun, 1877) -- valid
  Podarcis melisellensis mikavicae (Radovanovic, 1959) -- valid
  Podarcis melisellensis plutonis (Radovanovic, 1959) -- invalid
  Podarcis melisellensis pomoensis (Wettstein, 1926) -- valid
  Podarcis melisellensis thetidis (Radovanovic, 1959) -- valid
  Podarcis melisellensis traguriana (Radovanovic, 1959) -- invalid
  Podarcis milensis (Bedriaga, 1882) -- valid -- Milos Wall Lizard
  Podarcis milensis adolfjordansi (Buchholz, 1962) -- valid
  Podarcis milensis gerakuniae (Müller, 1938) -- valid
  Podarcis milensis milensis (Bedriaga, 1882) -- valid
  Podarcis muralis (Laurenti, 1768) -- valid -- Common Wall Lizard
  Podarcis muralis albanica (Bolkay, 1919) -- valid
  Podarcis muralis beccarii (Lanza, 1958) -- valid
  Podarcis muralis breviceps (Boulenger, 1905) -- valid
  Podarcis muralis brongniardii (Daudin, 1802) -- valid
  Podarcis muralis colosii (Taddei, 1949) -- valid
  Podarcis muralis maculiventris (Werner, 1891) -- valid
  Podarcis muralis marcuccii (Lanza, 1956) -- valid
  Podarcis muralis muralis (Laurenti, 1768) -- valid
  Podarcis muralis nigriventris Bonaparte, 1838 -- valid
  Podarcis muralis sammichelii Lanza, 1976 -- valid
  Podarcis peloponnesiacus (Bibron and Bory, 1833) -- valid -- Peloponnese Wall Lizard
  Podarcis peloponnesiacus lais (Buchholz, 1960) -- valid
  Podarcis peloponnesiacus peloponnesiacus (Bibron and Bory, 1833) -- valid
  Podarcis peloponnesiacus thais (Buchholz, 1960) -- valid
  Podarcis pityusensis (Boscá, 1883) -- valid -- Ibiza Wall Lizard
  Podarcis pityusensis affinis (Müller, 1927) -- invalid
  Podarcis pityusensis ahorcadosi (Eisentraut, 1930) -- valid
  Podarcis pityusensis calaesaladae (Müller, 1928) -- valid
  Podarcis pityusensis canaretensis Cirer, 1980 -- valid
  Podarcis pityusensis canensis (Eisentraut, 1928) -- valid
  Podarcis pityusensis caragolensis (Buchholz, 1954) -- valid
  Podarcis pityusensis carlkochi (Mertens and Müller, 1940) -- valid
  Podarcis pityusensis formenterae (Eisentraut, 1928) -- valid
  Podarcis pityusensis frailensis (Eisentraut, 1928) -- valid
  Podarcis pityusensis gastabiensis (Eisentraut, 1928) -- valid
  Podarcis pityusensis gorrae (Eisentraut, 1928) -- valid
  Podarcis pityusensis hedwigkamerae (Müller, 1927) -- valid
  Podarcis pityusensis hortae (Buchholz, 1954) -- valid
  Podarcis pityusensis kameriana (Mertens, 1927) -- valid
  Podarcis pityusensis maluquerorum Mertens, 1921 -- valid
  Podarcis pityusensis muradae (Eisentraut, 1928) -- valid
  Podarcis pityusensis negrae (Eisentraut, 1928) -- valid
  Podarcis pityusensis pityusensis (Boscá, 1883) -- valid
  Podarcis pityusensis ratae (Eisentraut, 1928) -- valid
  Podarcis pityusensis redonae (Eisentraut, 1928) -- valid
  Podarcis pityusensis schreitmuelleri (Müller, 1927) -- valid
  Podarcis pityusensis tagomagensis (Müller, 1927) -- valid
  Podarcis pityusensis torretensis (Buchholz, 1954) -- valid
  Podarcis pityusensis vedrae (Müller, 1927) -- valid
  Podarcis raffonei (Mertens, 1952) -- valid -- Aeolian Wall Lizard
  Podarcis raffonei alvearioi (Mertens, 1955) -- valid
  Podarcis raffonei antoninoi (Mertens, 1955) -- valid
  Podarcis raffonei cucchiarai Di Palma, 1980 -- invalid
  Podarcis raffonei raffonei (Mertens, 1952) -- valid
  Podarcis siculus (Rafinesque-Schmaltz, 1810) -- valid -- Italian Wall Lizard
  Podarcis siculus adriaticus (Werner, 1902) -- invalid
  Podarcis siculus aemiliani Capolongo, 1984 -- valid
  Podarcis siculus amparoae Capolongo, 1979 -- valid
  Podarcis siculus astorgae (Mertens, 1937) -- valid
  Podarcis siculus bagnolensis (Mertens, 1937) -- valid
  Podarcis siculus bolei (Brelih, 1961) -- valid
  Podarcis siculus calabresiae (Taddei, 1949) -- valid
  Podarcis siculus campestris (De Betta, 1857) -- valid
  Podarcis siculus caporiaccoi (Taddei, 1949) -- valid
  Podarcis siculus cattaroi (Taddei, 1950) -- valid
  Podarcis siculus cettii (Cara, 1872) -- invalid
  Podarcis siculus ciclopica (Taddei, 1949) -- valid
  Podarcis siculus coeruleus (Eimer, 1872) -- valid
  Podarcis siculus dupinici (Radovanovic, 1956) -- valid
  Podarcis siculus fiumanoideus (Brelih, 1963) -- valid
  Podarcis siculus flavigulus (Mertens, 1937) -- valid
  Podarcis siculus gallensis (Eimer, 1881) -- valid
  Podarcis siculus hadzii (Brelih, 1961) -- valid
  Podarcis siculus hieroglyphicus (Berthold, 1840) -- valid
  Podarcis siculus insularum (Mertens, 1937) -- valid
  Podarcis siculus klemmeri (Lanza and Capolongo, 1972) -- valid
  Podarcis siculus kolombatovici (Karaman, 1928) -- invalid
  Podarcis siculus laganjensis (Radovanovic, 1956) -- valid
  Podarcis siculus lanzai (Mertens, 1967) -- invalid
  Podarcis siculus latastei (Bedriaga, 1879) -- invalid
  Podarcis siculus massinei (Mertens, 1961) -- valid
  Podarcis siculus monaconensis (Eimer, 1881) -- valid
  Podarcis siculus nikolici (Brelih, 1961) -- valid
  Podarcis siculus palmarolae (Mertens, 1967) -- invalid
  Podarcis siculus pasquinii (Lanza, 1967) -- invalid
  Podarcis siculus paulae (Lanza Adriani and Romiti, 1971) -- valid
  Podarcis siculus pelagosae (Bedriaga, 1886) -- invalid
  Podarcis siculus pirosoensis (Mertens, 1937) -- valid
  Podarcis siculus pohlibensis (Radovanovic, 1970) -- invalid
  Podarcis siculus premudanus (Radovanovic, 1959) -- valid
  Podarcis siculus premudensis (Radovanovic, 1959) -- valid
  Podarcis siculus pretneri (Brelih, 1961) -- valid
  Podarcis siculus radovanovici (Brelih, 1961) -- valid
  Podarcis siculus ragusae (Wettstein, 1931) -- valid
  Podarcis siculus salfii (Lanza, 1954) -- valid
  Podarcis siculus samogradi (Radovanovic, 1956) -- valid
  Podarcis siculus sanctinicolai (Taddei, 1949) -- valid
  Podarcis siculus sanctistephani (Mertens, 1926) -- valid
  Podarcis siculus siculus (Rafinesque-Schmaltz, 1810) -- valid
  Podarcis siculus tyrrhenicus (Mertens, 1932) -- valid
  Podarcis siculus vesseljuchi (Radovanovic, 1959) -- valid
  Podarcis tauricus (Pallas, 1814) -- valid -- Crimean Wall Lizard
  Podarcis tauricus ionicus (Lehrs, 1902) -- invalid
  Podarcis tauricus thasopulae (Kattinger, 1942) -- invalid
  Podarcis tiliguerta (Gmelin, 1789) -- valid
  Podarcis tiliguerta contii Lanza and Brizzi, 1977 -- valid
  Podarcis tiliguerta eiselti (Lanza, 1972) -- valid
  Podarcis tiliguerta granchii Lanza and Brizzi, 1974 -- valid
  Podarcis tiliguerta grandisonae (Lanza, 1972) -- valid
  Podarcis tiliguerta maresi (Lanza, 1972) -- valid
  Podarcis tiliguerta pardii Lanza and Brizzi, 1974 -- valid
  Podarcis tiliguerta ranzii (Lanza, 1966) -- valid
  Podarcis tiliguerta rudolphisimonii Brizzi and Lanza, 1975 -- valid
  Podarcis tiliguerta tiliguerta (Gmelin, 1789) -- valid
  Podarcis tiliguerta toro (Mertens, 1932) -- valid
  Podarcis vaucheri (Boulenger, 1905) -- valid
  Podarcis waglerianus Gistel, 1868 -- valid -- Sicilian Wall Lizard
  Poecilopholis cameronensis Boulenger, 1903 -- valid -- Cameroon Racer
  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 leopoldi (de Witte, 1941) -- invalid
  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
  Poromera fordii (Hallowell, 1857) -- valid -- West African Striped Lizard
  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 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
  Potamites apodemus (Uzzell, 1966) -- invalid
  Potamites cochranae (C. E. Burt and M. D. Burt, 1931) -- invalid
  Potamites ecpleopus (Cope, 1875) -- valid -- Common Stream Lizard
  Potamites flavogularis Altamirano-Benavides, Zaher, Lobo, Grazziotin, Nunes and Rodrigues, 2013 -- invalid
  Potamites juruazensis (Avila-Pires and Vitt, 1998) -- valid
  Potamites montanicola Chávez and Vásquez, 2012 -- valid
  Potamites ocellatus (Sinitsin, 1930) -- valid
  Potamites strangulatus (Cope, 1868) -- valid -- Big-scaled Neusticurus
  Potamites strangulatus strangulatus (Cope, 1868) -- valid
  Potamites strangulatus trachodus (Uzzell, 1966) -- valid
  Praeteropus auxilliger Hutchinson, Couper, Amey and Wilmer, 2021 -- valid -- Sandstone Legless Skink
  Praeteropus brevicollis (Greer and Cogger, 1985) -- valid -- Short-necked Worm-skink
  Praeteropus gowi (Greer and Cogger, 1985) -- valid -- Speckled Worm-skink
  Praeteropus monachus Hutchinson, Couper, Amey and Wilmer, 2021 -- valid -- Mt. Abbot Legless Skink
  Prasinohaema flavipes (Parker, 1936) -- valid -- Common Green Tree Skink
  Prasinohaema parkeri (Smith, 1937) -- valid -- Parker's Green Tree Skink
  Prasinohaema prehensicauda (Loveridge, 1945) -- valid -- Prehensile Green Tree Skink
  Prasinohaema semoni (Oudemans, 1894) -- valid -- Semon's Green Tree Skink
  Prasinohaema virens (Peters, 1881) -- valid -- Green Tree Skink
  Proablepharus barrylyoni Couper, Limpus, McDonald and Amey, 2010 -- invalid
  Proablepharus kinghorni (Copland, 1947) -- invalid
  Proablepharus naranjicaudus Greer, Fisher and Horner, 2004 -- invalid
  Proablepharus reginae (Glauert, 1960) -- valid -- Western Soil-crevice Skink
  Proablepharus tenuis (Broom, 1896) -- valid -- Northern Soil-crevice Skink
  Proatheris superciliaris (Peters, 1855) -- valid -- Lowland Swamp Viper, Domino-bellied Viper, Lowland Viper
  Procellosaurinus erythrocercus Rodrigues, 1991 -- valid -- Rodrigues' Red Teiid
  Procellosaurinus tetradactylus Rodrigues, 1991 -- valid -- Rodrigues' Four-fingered Teiid
  Proctoporus bolivianus Werner, 1910 -- valid -- Bolivian Lightbulb Lizard
  Proctoporus carabaya Goicoechea, Padial, Chaparro, Castroviejo-Fisher and de la Riva, 2013 -- valid
  Proctoporus cephalolineatus García-Pérez and Yustiz, 1995 -- valid
  Proctoporus chasqui (Chávez, Siu-Ting, Duran and Venegas, 2011) -- valid
  Proctoporus guentheri (Boettger, 1891) -- valid -- Günther's Lightbulb Lizard
  Proctoporus iridescens Goicoechea, Padial, Chaparro, Castroviejo-Fisher and de la Riva, 2013 -- valid
  Proctoporus kiziriani Goicoechea, Padial, Chaparro, Castroviejo-Fisher and de la Riva, 2013 -- valid
  Proctoporus lacertus (Stejneger, 1913) -- valid
  Proctoporus pachyurus Tschudi, 1845 -- valid -- Tschudi's Lightbulb Lizard
  Proctoporus shrevei Parker, 1935 -- invalid
  Proctoporus sucullucu Doan and Castoe, 2003 -- valid
  Proctoporus unsaacae Doan and Castoe, 2003 -- valid
  Proctoporus xestus (Uzzell, 1969) -- valid -- River Teiid
  Proscelotes aenea (Barbour and Loveridge, 1928) -- valid -- Montane Skink
  Proscelotes arnoldi (Hewitt, 1932) -- valid -- Arnold's Montane Skink
  Proscelotes eggeli (Tornier, 1902) -- valid -- Usambara Five-toed Skink
  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 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 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 visseri Fitzsimons, 1959 -- valid -- Visser's Shovel-snout
  Protoblepharus Mirza, Bragin, Bhosale, Gowande, Patel and Poyarkov, 2022 -- valid -- East-Himalayan Skinks
  Protoblepharus apatani Mirza, Bragin, Bhosale, Gowande, Patel and Poyarkov, 2022 -- valid -- Apatani East-Himalayan Skink
  Protoblepharus medogensis (Jiang, Wu, Guo, Li and Che, 2020) -- valid
  Protoblepharus nyingchiensis (Jiang, Wu, Wang, Ding and Che, 2020) -- 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
  Psammodromus algirus (Linnaeus, 1758) -- valid -- Algerian Psammodromus
  Psammodromus algirus algirus (Linnaeus, 1758) -- valid
  Psammodromus algirus doriae (Bedriaga, 1886) -- valid
  Psammodromus algirus ketamensis Galan, 1931 -- valid
  Psammodromus algirus nollii (Fischer, 1887) -- valid
  Psammodromus blanci (Lataste, 1880) -- valid -- Blank's Psammodromus
  Psammodromus hispanicus Fitzinger, 1826 -- valid -- Spanish Psammodromus
  Psammodromus microdactylus (Boettger, 1881) -- valid -- Small-fingered Psammodromus
  Psammodromus occidentalis Fitze, Gonzalez-Jimena, San-Jose, San Mauro and Zardoya, 2012 -- valid
  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
  Psammophis aegyptius Marx, 1958 -- valid
  Psammophis angolensis (Bocage, 1872) -- valid -- Dwarf Sand Snake
  Psammophis ansorgii Boulenger, 1905 -- valid -- Link-marked Sand Racer
  Psammophis biseriatus Peters, 1881 -- valid -- Two-striped Sand Racer, Link-marked Sand Snake
  Psammophis brevirostris Peters, 1881 -- valid -- Short-snouted Grass Snake
  Psammophis cerasogaster Cantor, 1839 -- invalid
  Psammophis condanarus (Merrem, 1820) -- valid -- Sand Snake
  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 leithii Günther, 1869 -- valid -- Pakistani Ribbon Snake, Pakistan Sand Racer
  Psammophis leopardinus Bocage, 1887 -- valid -- Leopard Sand Snake, Leopard Grass Snake
  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 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 orientalis Broadley, 1977 -- valid -- Eastern Stripe-bellied Sand Snake
  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 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 subtaeniatus Peters, 1882 -- valid -- Stripe-bellied Sand Snake
  Psammophis sudanensis Werner, 1919 -- valid
  Psammophis tanganicus Loveridge, 1940 -- valid -- Tanganyika Sand Snake, Western Link-marked Sand Racer
  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 rhombeatus (Linnaeus, 1758) -- valid -- Spotted Skaapsteker, Rhombic Skaapsteker
  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
  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 slevini (Van Denburgh, 1912) -- valid -- Banded Galapagos Snake
  Pseudalsophis steindachneri (Van Denburgh, 1912) -- valid -- Striped Galapagos Snake
  Pseudaspis cana (Linnaeus, 1758) -- valid -- Mole Snake
  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
  Pseudemoia baudini (Greer, 1982) -- valid -- Bight Coast Skink
  Pseudemoia cryodroma Hutchinson and Donnellan, 1992 -- valid -- Alpine Bog Skink
  Pseudemoia entrecasteauxii (A. M. C. Duméril and Bibron, 1839) -- valid -- Tussock Cool-skink, Tussock Skink, Entrecasteaux's Skink
  Pseudemoia pagenstecheri (Lindholm, 1901) -- valid -- Southern Grass Tussock Skink, Southern Tussock Grass Skink
  Pseudemoia rawlinsoni (Hutchinson and Donnellan, 1988) -- valid -- Rawlinson's Window-eyed Skink
  Pseudemoia spenceri (Lucas and Frost, 1894) -- valid -- Trunk-climbing Cool-skink
  Pseuderemias brenneri (Peters, 1869) -- valid -- Brenner's Racerunner, Brenner's Sand Racer
  Pseuderemias erythrosticta (Boulenger, 1891) -- valid -- Boulenger's Racerunner
  Pseuderemias mucronata (Blanford, 1870) -- valid -- Blanford's Sand Racer, Sinai Racerunner
  Pseuderemias savagei (Gans, Laurent and Pandit, 1965) -- valid
  Pseuderemias septemstriata (Parker, 1942) -- valid
  Pseuderemias smithii (Boulenger, 1895) -- valid -- Smith's Racerunner, Smith's Sand Racer
  Pseuderemias striatus (Peters, 1874) -- valid -- Peters' Sand Lizard, Peters' Sand Racer
  Pseuderemias striatus gardoensis (Arillo, Balletto and Spanò, 1965) -- valid
  Pseuderemias striatus striatus (Peters, 1874) -- valid
  Pseudoacontias angelorum Nussbaum and Raxworthy, 1995 -- valid
  Pseudoacontias madagascariensis Bocage, 1889 -- valid -- Giant Madagascar Skink
  Pseudoacontias menamainty Andreone and Greer, 2002 -- valid
  Pseudoacontias unicolor Sakata and Hikida, 2003 -- valid
  Pseudoboa coronata Schneider, 1801 -- valid -- Crowned False Boa
  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
  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
  Pseudocordylus langi Loveridge, 1944 -- valid -- Lang's Crag Lizard
  Pseudocordylus melanotus (Smith, 1838) -- valid -- Common Crag Lizard, Highveld Crag Lizard
  Pseudocordylus microlepidotus (Cuvier, 1829) -- valid -- Cape Crag Lizard
  Pseudocordylus microlepidotus fasciatus (Smith, 1838) -- valid -- Karoo Crag Lizard, Eastern Cape Crag Lizard
  Pseudocordylus microlepidotus microlepidotus (Cuvier, 1829) -- valid -- Western Cape Crag Lizard
  Pseudocordylus microlepidotus namaquensis Hewitt, 1927 -- valid -- Nuweveldberg Crag Lizard
  Pseudocordylus spinosus Fitzsimons, 1947 -- valid -- Spiny Crag Lizard
  Pseudocordylus subviridis (Smith, 1838) -- valid -- Drakensberg Crag Lizard
  Pseudocordylus transvaalensis Fitzsimons, 1943 -- valid -- Northern Crag Lizard
  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
  Pseudoleptodeira latifasciata (Günther, 1894) -- valid -- Culebra-ojo de gato-falsa cabeza roja, False Cat-eyed Snake
  Pseudoplectrurus Boulenger, 1890 -- valid
  Pseudoplectrurus canaricus (Beddome, 1870) -- valid -- Karnataka Burrowing Snake
  Pseudopus apodus (Pallas, 1775) -- valid -- European Glass Lizard
  Pseudopus apodus apodus (Pallas, 1775) -- valid
  Pseudopus apodus thracius (Obst, 1978) -- 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
  Pseudotomodon trigonatus (Leybold, 1873) -- valid -- False Tomodon Snake
  Pseudotyphlops Schlegel, 1839 -- invalid
  Pseudotyphlops philippinus (Müller, 1832) -- invalid
  Pseudoxenodon bambusicola Vogt, 1922 -- valid -- Bamboo Snake
  Pseudoxenodon baramensis (M. A. Smith, 1921) -- valid -- Baramen Bamboo Snake
  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 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 stejnegeri Barbour, 1908 -- valid -- Stejneger's Bamboo Snake
  Pseudoxenodon stejnegeri stejnegeri Barbour, 1908 -- valid
  Pseudoxenodon stejnegeri striaticaudatus Pope, 1928 -- valid
  Pseudoxenodontidae McDowell, 1987 -- invalid
  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 quinquelineatus (Günther, 1881) -- valid -- Striped Brook Snake
  Pseudoxyrhopus sokosoko Raxworthy and Nussbaum, 1994 -- valid
  Pseudoxyrhopus tritaeniatus Mocquard, 1894 -- valid
  Pseustes cinnamomeus (Wagler, 1824) -- invalid
  Pseustes poecilonotus (Günther, 1858) -- invalid -- Culebra resoplona norteña
  Pseustes sexcarinatus (Wagler, 1824) -- invalid
  Pseustes shropshirei (Barbour and Amaral, 1924) -- invalid
  Psilophthalmus paeminosus Rodrigues, 1991 -- 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
  Psychosaura agmosticha (Rodrigues, 2000) -- valid
  Psychosaura macrorhyncha (Hoge, 1946) -- valid -- Hoge's Mabuya
  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 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
  Ptychoglossus bicolor (Werner, 1916) -- invalid -- Werner's Largescale Lizard
  Ptychoglossus bilineatus Boulenger, 1890 -- invalid
  Ptychoglossus brevifrontalis Boulenger, 1912 -- invalid -- Boulenger's Largescale Lizard
  Ptychoglossus danieli Harris, 1994 -- invalid
  Ptychoglossus eurylepis Harris and Rueda, 1985 -- invalid -- Largescale Lizard
  Ptychoglossus festae (Peracca, 1896) -- invalid -- Peracca's Largescale Lizard
  Ptychoglossus gorgonae Harris, 1994 -- invalid
  Ptychoglossus grandisquamatus Rueda, 1985 -- invalid -- Common Largescale Lizard
  Ptychoglossus kugleri Roux, 1927 -- invalid -- Kugler's Largescale Lizard
  Ptychoglossus myersi Harris, 1994 -- invalid
  Ptychoglossus nicefori (Loveridge, 1929) -- invalid
  Ptychoglossus plicatus (Taylor, 1949) -- invalid -- Taylor's Largescale Lizard
  Ptychoglossus romaleos Harris, 1994 -- invalid
  Ptychoglossus stenolepis (Boulenger, 1908) -- invalid
  Ptychoglossus vallensis Harris, 1994 -- invalid
  Ptychophis flavovirgatus Gomes, 1915 -- valid -- Fanged Water Snake
  Pygomeles braconnieri Grandidier, 1867 -- valid -- Braconnier's Short Skink
  Pygomeles petteri Pasteur and Paulian, 1962 -- valid -- Petter's Short Skink
  Pythonodipsas carinata Günther, 1868 -- valid -- Western Keeled Snake
  Rabdion forsteni A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Forsten's Pointed Snake
  Ramphotyphlops acuticaudus (Peters, 1877) -- valid -- Palau Blind Snake, Palau Blindsnake, Palau Island Blind Snake
  Ramphotyphlops adocetus Wynn, Reynolds, Buden, Falanruw and Lynch, 2012 -- valid
  Ramphotyphlops affinis (Boulenger, 1889) -- invalid
  Ramphotyphlops albiceps (Boulenger, 1898) -- invalid
  Ramphotyphlops ammodytes (Montague, 1914) -- invalid
  Ramphotyphlops angusticeps (Peters, 1877) -- valid -- Arboreal Blind Snake
  Ramphotyphlops aspina Couper, Covacevich and Wilson, 1998 -- invalid
  Ramphotyphlops australis (Gray, 1845) -- invalid -- Southern Blindsnake
  Ramphotyphlops batillus (Waite, 1894) -- invalid
  Ramphotyphlops becki (Tanner, 1948) -- valid -- Beck's Blind Snake
  Ramphotyphlops bicolor (Peters, 1858) -- invalid
  Ramphotyphlops bituberculatus (Peters, 1863) -- invalid
  Ramphotyphlops braminus (Daudin, 1803) -- invalid -- Brahminy Blind Snake, Brahminy Blindsnake, Serpiente-ciega de Braminy
  Ramphotyphlops broomi (Boulenger, 1898) -- invalid
  Ramphotyphlops centralis Storr, 1984 -- invalid
  Ramphotyphlops chamodracaena Ingram and Covacevich, 1993 -- invalid
  Ramphotyphlops cumingii (Gray, 1845) -- valid -- Cuming's Blind Snake
  Ramphotyphlops depressus (Peters, 1880) -- valid
  Ramphotyphlops diversus (Waite, 1894) -- invalid
  Ramphotyphlops endoterus (Waite, 1918) -- invalid
  Ramphotyphlops erycinus (Werner, 1901) -- invalid
  Ramphotyphlops exocoeti (Boulenger, 1887) -- valid -- Christmas Island Blind Snake
  Ramphotyphlops flaviventer (Peters, 1864) -- valid -- Yellowbellied Blindsnake
  Ramphotyphlops ganei Aplin, 1998 -- invalid
  Ramphotyphlops grypus (Waite, 1918) -- invalid
  Ramphotyphlops guentheri (Peters, 1865) -- invalid
  Ramphotyphlops hamatus Storr, 1981 -- invalid
  Ramphotyphlops hatmaliyeb Wynn, Reynolds, Buden, Falanruw and Lynch, 2012 -- valid
  Ramphotyphlops howi Storr, 1983 -- invalid
  Ramphotyphlops kimberleyensis Storr, 1981 -- invalid
  Ramphotyphlops leptosomus Robb, 1972 -- invalid
  Ramphotyphlops leucoproctus (Boulenger, 1889) -- invalid
  Ramphotyphlops ligatus (Peters, 1879) -- invalid
  Ramphotyphlops lineatus (Schlegel, 1839) -- valid -- Striped Blind Snake, Striped Worm Snake
  Ramphotyphlops longissimus Aplin, 1998 -- invalid
  Ramphotyphlops lorenzi (Werner, 1909) -- valid
  Ramphotyphlops mansuetus (Barbour, 1921) -- valid -- Small-headed Blind Snake
  Ramphotyphlops margaretae Storr, 1981 -- invalid
  Ramphotyphlops marxi (Wallach, 1993) -- valid -- Marx's Worm Snake
  Ramphotyphlops melanocephalus (A. M. C. Duméril and Bibron, 1844) -- invalid
  Ramphotyphlops micrommus Storr, 1981 -- invalid
  Ramphotyphlops minimus (Kinghorn, 1929) -- invalid
  Ramphotyphlops multilineatus (Schlegel, 1839) -- valid -- Hook-nosed Blindsnake
  Ramphotyphlops nema Shea and Horner, 1997 -- invalid
  Ramphotyphlops nigrescens (Gray, 1845) -- invalid
  Ramphotyphlops nigroterminatus (Parker, 1931) -- invalid
  Ramphotyphlops olivaceus (Gray, 1845) -- valid -- Olive Blind Snake
  Ramphotyphlops ozakiae Wallach, 2001 -- invalid
  Ramphotyphlops pilbarensis Aplin and Donnellan, 1993 -- invalid
  Ramphotyphlops pinguis (Waite, 1897) -- invalid
  Ramphotyphlops polygrammicus (Schlegel, 1839) -- invalid
  Ramphotyphlops polygrammicus brongersmai (Mertens, 1929) -- invalid
  Ramphotyphlops polygrammicus elberti (Roux, 1911) -- invalid
  Ramphotyphlops polygrammicus florensis (Boulenger, 1897) -- invalid
  Ramphotyphlops polygrammicus polygrammicus (Schlegel, 1839) -- invalid
  Ramphotyphlops polygrammicus undecimlineata (Mertens, 1927) -- invalid
  Ramphotyphlops proximus (Waite, 1893) -- invalid
  Ramphotyphlops robertsi Couper, Covacevich and Wilson, 1998 -- invalid
  Ramphotyphlops silvia Ingram and Covacevich, 1993 -- invalid
  Ramphotyphlops similis (Brongersma, 1934) -- valid
  Ramphotyphlops splendidus Aplin, 1998 -- invalid
  Ramphotyphlops suluensis (Taylor, 1918) -- valid
  Ramphotyphlops supranasalis (Brongersma, 1934) -- valid
  Ramphotyphlops tovelli (Loveridge, 1945) -- invalid
  Ramphotyphlops troglodytes Storr, 1981 -- invalid
  Ramphotyphlops unguirostris (Peters, 1867) -- invalid
  Ramphotyphlops waitii (Boulenger, 1895) -- invalid
  Ramphotyphlops wiedii (Peters, 1867) -- invalid
  Ramphotyphlops willeyi (Boulenger, 1900) -- valid
  Ramphotyphlops yampiensis Storr, 1981 -- invalid
  Ramphotyphlops yirrikalae (Kinghorn, 1942) -- invalid
  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
  Reptilia Laurenti, 1768 -- valid -- répteis, reptiles, Reptiles
  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
  Rhachidelus brazili Boulenger, 1908 -- valid -- Brazilian Bird Snake
  Rhachisaurus brachylepis (Dixon, 1974) -- valid -- Dixon's Anotosaura
  Rhadinaea bogertorum Myers, 1974 -- valid -- Culebra-café oaxaqueña, Oaxacan Graceful Brown Snake
  Rhadinaea calligaster (Cope, 1876) -- valid -- Thick Graceful Brown Snake
  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 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 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 hesperia Bailey, 1940 -- valid -- Culebra-café de Occidente, Western Graceful Brown Snake
  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 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 omiltemana (Günther, 1894) -- valid -- Culebra-café guerrerense, Guerreran Pine Woods Snake
  Rhadinaea pulveriventris Boulenger, 1896 -- valid -- Common Graceful Brown Snake
  Rhadinaea quinquelineata Cope, 1886 -- valid -- Culebra-café poblana, Pueblan Graceful Brown Snake
  Rhadinaea sargenti Dunn and Bailey, 1939 -- valid -- Sargent's Graceful Brown Snake
  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 vermiculaticeps (Cope, 1860) -- valid -- Vermiculate Graceful Brown Snake
  Rhadinella anachoreta (E. N. Smith and Campbell, 1994) -- valid
  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
  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
  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
  Rhinechis scalaris (Schinz, 1822) -- invalid
  Rhineura floridana (Baird, 1858) -- valid -- Florida Worm Lizard
  Rhineuridae Vanzolini, 1951 -- valid -- North American Worm Lizards
  Rhinobothryum bovallii Andersson, 1916 -- valid
  Rhinobothryum lentiginosum (Scopoli, 1785) -- valid -- Amazon Banded Snake
  Rhinocheilus lecontei Baird and Girard, 1853 -- valid -- Long-nosed Snake, Culebra narigona, Longnose Snake, Western Long-nosed Snake
  Rhinophis Hemprich, 1820 -- valid
  Rhinophis blythii Kelaart, 1853 -- valid -- Blyth's Earth Snake
  Rhinophis dorsimaculatus Deraniyagala, 1941 -- valid -- Polkadot Earth Snake
  Rhinophis drummondhayi Wall, 1921 -- valid -- Drummond-Hay's Earth Snake
  Rhinophis erangaviraji Wickramasinghe, Vidanapathirana, Wickramasinghe and Ranwella, 2009 -- valid -- Eranga Viraj's Shieldtail Snake
  Rhinophis fergusonianus Boulenger, 1896 -- valid -- Cardamom Hills Earth Snake
  Rhinophis goweri Aengals and Ganesh, 2013 -- valid
  Rhinophis homolepis Hemprich, 1820 -- valid -- Trevelyan's Earth Snake
  Rhinophis lineatus Gower and Maduwage, 2011 -- valid -- Striped Rhinophis
  Rhinophis melanogaster (Gray, 1858) -- valid -- Gray's Earth Snake
  Rhinophis oxyrhynchus (Schneider, 1801) -- valid -- Schneider's Earth Snake
  Rhinophis philippinus (Cuvier, 1829) -- valid -- Peters' Philippine Earth Snake
  Rhinophis phillipsi (Nicholls, 1929) -- valid -- Phillipps' Earth Snake
  Rhinophis porrectus Wall, 1921 -- valid
  Rhinophis punctatus Müller, 1832 -- valid -- Müller's Earth Snake
  Rhinophis roshanpererai Wickramasinghe, Vidanapathirana, Rajeev and Gower, 2017 -- valid -- Roshan Perera's Shieldtail
  Rhinophis saffragamus (Kelaart, 1853) -- valid -- Large Shieldtail Snake
  Rhinophis sanguineus Beddome, 1863 -- valid -- Salty Earth Snake
  Rhinophis travancoricus Boulenger, 1892 -- valid -- Tamil Nadu Earth Snake, Travancore Shieldtail
  Rhinophis tricolorata Deraniyagala, 1975 -- valid
  Rhinophis zigzag Gower and Maduwage, 2011 -- valid -- Zigzag Rhinophis
  Rhinotyphlops boylei (Fitzsimons, 1932) -- valid -- Boyle's Beaked Blind Snake
  Rhinotyphlops lalandei (Schlegel, 1839) -- valid -- Delalande's Beaked Blind Snake
  Rhinotyphlops leucocephalus (Parker, 1930) -- valid -- White-headed Beaked Snake
  Rhinotyphlops schinzi (Boettger, 1887) -- valid -- Schinz's Beaked Blind Snake
  Rhynchocalamus arabicus Schmidt, 1933 -- valid -- Aden Kukri Snake
  Rhynchocalamus barani Olgun, Avci, Ilgaz, Üzüm and Yilmaz, 2007 -- invalid
  Rhynchocalamus melanocephalus (Jan, 1862) -- valid -- Palestine Kukri Snake
  Rhynchocalamus melanocephalus satunini (Nikolsky, 1899) -- invalid
  Rhynchophis boulengeri Mocquard, 1897 -- invalid
  Riama achlyens (Uzzell, 1958) -- invalid
  Riama afrania Arredondo and Sánchez-Pacheco, 2010 -- invalid
  Riama anatoloros (Kizirian, 1996) -- valid
  Riama aurea Sánchez-Pacheco, Aguirre-Penafiel and Torres-Carvajal, 2012 -- invalid
  Riama balneator (Kizirian, 1996) -- valid
  Riama cashcaensis (Kizirian and Coloma, 1991) -- valid -- Kizorian's Lightbulb Lizard
  Riama colomaromani (Kizirian, 1996) -- valid
  Riama columbiana (Andersson, 1914) -- valid -- Colombian Lightbulb Lizard
  Riama crypta Sánchez-Pacheco, Kizirian and Nunes, 2011 -- invalid
  Riama hyposticta (Boulenger, 1902) -- invalid
  Riama inanis (Doan and Schargel, 2003) -- valid
  Riama kiziriani Sánchez-Pareco, Aguirre-Penafiel and Torres-Carvajal, 2012 -- invalid
  Riama labionis (Kizirian, 1996) -- valid
  Riama laevis (Boulenger, 1908) -- invalid
  Riama laudahnae (Köhler and Lehr, 2004) -- invalid
  Riama luctuosa (Peters, 1863) -- invalid
  Riama meleagris (Boulenger, 1885) -- valid -- Brown Lightbulb Lizard
  Riama oculata (O'Shaughnessy, 1879) -- invalid
  Riama orcesi (Kizirian, 1995) -- valid
  Riama petrorum (Kizirian, 1996) -- invalid
  Riama raneyi (Kizirian, 1996) -- valid
  Riama rhodogaster Rivas, Schargel and Meik, 2005 -- invalid
  Riama simotera (O'Shaughnessy, 1879) -- valid -- O'Shaughnessy's Lightbulb Lizard
  Riama stellae Sánchez-Pacheco, 2010 -- invalid
  Riama stigmatoral (Kizirian, 1996) -- valid
  Riama striata (Peters, 1863) -- valid -- Striped Lightbulb Lizard
  Riama unicolor Gray, 1858 -- valid -- Drab Lightbulb Lizard
  Riama vespertina (Kizirian, 1996) -- invalid
  Riama vieta (Kizirian, 1996) -- invalid
  Riolama leucosticta (Boulenger, 1900) -- valid -- White-spotted Riolama
  Riolama luridiventris Esqueda, la Marca and Praderio, 2004 -- valid
  Riolama uzzelli Molina and Señaris, 2003 -- valid
  Ristella beddomii Boulenger, 1887 -- valid -- Beddome's Cat Skink
  Ristella guentheri Boulenger, 1887 -- valid -- Günther's Ristella
  Ristella rurkii Gray, 1839 -- valid -- Rurk's Ristella
  Ristella travancorica (Beddome, 1870) -- valid -- Travancore Ristella
  Rodriguesophis chui (Rodrigues, 1993) -- valid
  Rodriguesophis iglesiasi (Gomes, 1915) -- valid -- Gomes' Pampas Snake
  Rodriguesophis scriptorcibatus (Rodrigues, 1993) -- valid
  Saiphos equalis (Gray, 1825) -- valid -- Yellow-bellied Three-toed Skink, Three-toed Skink
  Salvadora bairdi Jan, 1860 -- valid -- Culebra-parchada de Baird, Baird's 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 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 mexicana (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Culebra-parchada mexicana, Mexican Patchnose Snake
  Salvator duseni (Lönnberg, 1910) -- valid
  Salvator merianae Duméril and Bibron, 1839 -- valid -- Argentine Black and White Tegu, Argentine Giant Tegu
  Salvator merianae buzioensis (Müller, 1969) -- valid
  Salvator merianae merianae Duméril and Bibron, 1839 -- valid
  Salvator merianae sebastiani (Müller, 1968) -- valid
  Salvator rufescens (Günther, 1871) -- valid -- Red Tegu
  Sanzinia madagascariensis (A. M. C. Duméril and Bibron, 1844) -- valid
  Sanzinia madagascariensis madagascariensis (A. M. C. Duméril and Bibron, 1844) -- invalid
  Sanzinia madagascariensis volontany Vences and Glaw, 2004 -- invalid
  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
  Saproscincus basiliscus (Ingram and Rawlinson, 1981) -- valid -- Pale-lipped Shadeskink
  Saproscincus challengeri (Boulenger, 1887) -- valid -- Orange-tailed Shadeskink, Border Ranges Shadeskink, Challenger's Skink
  Saproscincus czechurai (Ingram and Rawlinson, 1981) -- valid -- Wedge-snouted Shadeskink, Czechuras Litter-skink
  Saproscincus eungellensis Sadlier, Couper, Colgan, Vanderduys and Rickard, 2005 -- valid -- Eungella Shadeskink
  Saproscincus hannahae Couper and Keim, 1998 -- valid -- Hannah's Shadeskink
  Saproscincus lewisi Couper and Keim, 1998 -- valid -- Northern Wet Tropics Shadeskink
  Saproscincus mustelinus (O'Shaughnessy, 1874) -- valid -- Weasel Shadeskink, Weasel Skink, Southern Weasel Skink
  Saproscincus oriarus Sadlier, 1998 -- valid -- Heath Shadeskink
  Saproscincus rosei Wells and Wellington, 1985 -- valid -- Orange-tailed Shadeskink, Highland Forest Skink
  Saproscincus saltus Hoskin, 2013 -- valid
  Saproscincus spectabilis (De Vis, 1888) -- valid -- Gully Shadeskink
  Saproscincus tetradactylus (Greer and Kluge, 1980) -- valid -- Four-fingered Shadeskink, Four-toed Litter-skink
  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 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
  Scelarcis perspicillata (Duméril and Bibron, 1839) -- valid -- Menorca Wall Lizard
  Scelarcis perspicillata chabanaudi (Werner, 1931) -- valid
  Scelarcis perspicillata pellegrini (Werner, 1929) -- valid
  Scelarcis perspicillata perspicillata (Duméril and Bibron, 1839) -- valid
  Scelotes anguineus (Boulenger, 1887) -- valid -- Algoa Dwarf Burrowing Skink, Boulenger's Burrowing Skink
  Scelotes arenicolus (Peters, 1854) -- valid -- Zululand Dwarf Burrowing Skink
  Scelotes bidigittatus Fitzsimons, 1930 -- valid -- Lowveld Dwarf Burrowing Skink
  Scelotes bipes (Linnaeus, 1766) -- valid -- Silvery Dwarf Burrowing Skink, Common Burrowing Skink
  Scelotes bourquini Broadley, 1994 -- invalid -- Bourquin's Dwarf Burrowing Skink
  Scelotes caffer (Peters, 1861) -- valid -- Cape Dwarf Burrowing Skink, Peters' Burrowing Skink
  Scelotes capensis (Smith, 1849) -- valid -- Cape Burrowing Skink, Western Dwarf Burrowing Skink
  Scelotes duttoni Broadley, 1990 -- valid
  Scelotes fitzsimonsi Broadley, 1994 -- valid -- Fitzsimons' Dwarf Burrowing Skink
  Scelotes gronovii (Daudin, 1802) -- valid -- Gronovi's Dwarf Burrowing Skink
  Scelotes guentheri Boulenger, 1887 -- valid -- Günther's Dwarf Burrowing Skink
  Scelotes inornatus (Smith, 1849) -- valid -- Durban Dwarf Burrowing Skink, Legless Burrowing Skink
  Scelotes insularis Broadley, 1990 -- valid
  Scelotes kasneri Fitzsimons, 1939 -- valid -- Kasner's Dwarf Burrowing Skink
  Scelotes limpopoensis Fitzsimons, 1930 -- valid -- Limpopo Dwarf Burrowing Skink
  Scelotes limpopoensis albiventris Jacobsen, 1987 -- valid -- White-Bellied Dwarf Burrowing Skink
  Scelotes limpopoensis limpopoensis Fitzsimons, 1930 -- valid
  Scelotes mirus (Roux, 1907) -- valid -- Montane Dwarf Burrowing Skink
  Scelotes montispectus Bauer, Whiting and Sadlier, 2003 -- valid -- Bloubergstrand Dwarf Burrowing Skink
  Scelotes mossambicus (Peters, 1882) -- valid -- Mozambique Dwarf Burrowing Skink
  Scelotes poensis Bocage, 1895 -- valid
  Scelotes schebeni Sternfeld, 1910 -- invalid
  Scelotes sexlineatus (Harlan, 1824) -- valid -- Striped Dwarf Burrowing Skink
  Scelotes uluguruensis Barbour and Loveridge, 1928 -- valid -- Uluguru Fossorial Skink
  Scelotes vestigifer Broadley, 1994 -- valid -- Coastal Dwarf Burrowing Skink
  Scincella apraefrontalis T. Q. Nguyen, V. S. Nguyen, Böhme and Ziegler, 2010 -- valid -- Huulien Ground Skink
  Scincella assata (Cope, 1864) -- valid -- Red Forest Skink
  Scincella assata assata (Cope, 1864) -- valid
  Scincella assata taylori (Oliver, 1937) -- valid
  Scincella barbouri (Stejneger, 1925) -- valid -- Barbour's Ground Skink
  Scincella boettgeri (Van Denburgh, 1912) -- valid -- Boettger's Ground Skink
  Scincella capitanea Ouboter, 1986 -- valid -- Large Ground Skink
  Scincella caudaequinae (Smith, 1951) -- valid -- Horsehead Ground Skink
  Scincella cherriei (Cope, 1893) -- valid -- Brown Forest Skink, Encinela-selvática café
  Scincella cherriei cherriei (Cope, 1893) -- valid
  Scincella cherriei ixbaac (Stuart, 1940) -- valid
  Scincella cherriei stuarti (Smith, 1941) -- valid
  Scincella darevskii Nguyen, Ananjeva, Orlov, Rybaltovsky and Böhme, 2010 -- valid -- Darevsky's Ground Skink
  Scincella devorator (Darevsky, Orlov and Cuc, 2004) -- valid
  Scincella doriae (Boulenger, 1887) -- valid -- Doria's Ground Skink, Doria's Smooth Skink
  Scincella forbesorum (Taylor, 1937) -- valid
  Scincella formosensis (Van Denburgh, 1912) -- valid -- Van Denburgh's Ground Skink
  Scincella gemmingeri (Cope, 1864) -- valid -- Encinela de selva, Forest Ground Skink
  Scincella huanrenensis Zhao and Huang, 1982 -- valid
  Scincella incerta (Stuart, 1940) -- valid -- Encinela-selvática hojarasquera
  Scincella inconspicua (Müller, 1894) -- invalid
  Scincella kikaapoa García-Vázquez, Canseco-Márquez and Nieto-Montes de Oca, 2010 -- valid
  Scincella lateralis (Say in James, 1822) -- valid -- Ground Skink, Encinela norteña, Little Brown Skink
  Scincella macrotis (Steindachner, 1867) -- valid -- Large-eared Ground Skink
  Scincella melanosticta (Boulenger, 1887) -- valid -- Black Ground Skink, Black-spotted Smooth Skink
  Scincella melanosticta kohtaoensis (Cochran, 1927) -- valid
  Scincella melanosticta melanosticta (Boulenger, 1887) -- valid
  Scincella modesta (Günther, 1864) -- valid -- Modest Ground Skink
  Scincella modesta modesta (Günther, 1864) -- valid
  Scincella modesta septentrionalis (Schmidt, 1925) -- valid
  Scincella monticola (Schmidt, 1925) -- valid
  Scincella ochracea (Bourret, 1937) -- valid
  Scincella potanini (Günther, 1896) -- valid
  Scincella przewalskii (Bedriaga, 1912) -- valid
  Scincella punctatolineata (Boulenger, 1893) -- valid -- Burma Smooth Skink
  Scincella rara (Darevsky and Orlov, 1997) -- valid -- Double Subdigital-pads Skink
  Scincella reevesii (Gray, 1838) -- valid -- Reeves' Smooth Skink
  Scincella rufocaudata (Darevsky and Nguyen Van Sang, 1983) -- valid -- Red-tailed Ground Skink
  Scincella rupicola (Smith, 1916) -- valid
  Scincella schmidti (Barbour, 1927) -- valid
  Scincella silvicola (Taylor, 1937) -- valid -- Encinela de Taylor
  Scincella tsinlingensis (Hu and Zhao, 1966) -- valid
  Scincella vandenburghi (Schmidt, 1927) -- valid -- Tsushima Smooth Skink
  Scincella victoriana (Shreve, 1940) -- valid
  Scincidae Oppel, 1811 -- valid -- Skinks
  Scincopus fasciatus (Peters, 1864) -- valid -- Peters' Banded Skink
  Scincopus fasciatus fasciatus (Peters, 1864) -- valid
  Scincopus fasciatus melanocephalus Lanza and Corsi, 1981 -- valid
  Scincus albifasciatus Boulenger, 1890 -- valid
  Scincus albifasciatus albifasciatus Boulenger, 1890 -- valid
  Scincus albifasciatus laterimaculatus Werner, 1914 -- valid
  Scincus hemprichii Wiegmann, 1837 -- valid
  Scincus mitranus Anderson, 1871 -- valid -- Arabian Sand Skink, Sand Fish, Eastern Skink
  Scincus noctua Lesson, 1830 -- invalid
  Scincus scincus (Linnaeus, 1758) -- valid -- Sandfish Skink
  Scincus scincus cucullatus Werner, 1914 -- valid
  Scincus scincus meccensis Wiegmann, 1837 -- valid
  Scincus scincus scincus (Linnaeus, 1758) -- valid
  Scolecophis atrocinctus (Schlegel, 1837) -- valid -- Black-banded Snake
  Scolecoseps acontias (Werner, 1913) -- valid -- Sandy Limbless Skink
  Scolecoseps boulengeri Loveridge, 1920 -- valid -- Boulenger's Limbless Skink
  Scolecoseps litipoensis Broadley, 1995 -- valid -- Litipo Sand Skink
  Scriptosaura catimbau Rodrigues and Maranhão Dos Santos, 2008 -- valid
  Scytale brachyorrhos F. Boie, 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
  Sepsina alberti Hewitt, 1929 -- valid -- Albert's Skink, Albert's Burrowing Skink
  Sepsina angolensis Bocage, 1866 -- valid -- Angola Skink, Angolan Reduced-Limb Skink
  Sepsina bayonii (Bocage, 1866) -- valid -- Bayon's Skink, Bayon's Reduced-limb-Skink
  Sepsina copei Bocage, 1873 -- valid -- Sepsina Skink, Cope's Reduced-Limb Skink
  Sepsina tetradactyla Peters, 1874 -- valid -- Four-fingered Skink
  Sepsina tetradactyla hemptinnei Witte, 1933 -- valid
  Sepsina tetradactyla tetradactyla Peters, 1874 -- valid
  Sepsiscus pluto (Ingram, 1977) -- valid -- Cape York Worm-skink
  Sepsophis punctatus Beddome, 1870 -- valid -- Spotted Eastern Ghats Skink
  Shinisauridae -- valid
  Shinisaurus crocodilurus Ahl, 1930 -- valid
  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 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
  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 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
  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 geminatus (H. Boie, 1826) -- valid -- Boie's Many-tooth Snake
  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
  Sigaloseps deplanchei (Bavay, 1869) -- valid
  Sigaloseps ruficauda Sadlier and Bauer, 1999 -- valid
  Silvascincus murrayi (Boulenger, 1887) -- valid -- Blue-speckled Forest-skink
  Silvascincus tryoni (Longman, 1918) -- valid -- Border Ranges Blue-spectacled, Forest Skink
  Simiscincus aurantiacus Sadlier and Bauer, 1997 -- valid
  Simocephalus unicolor Boulenger, 1910 -- invalid
  Simophis rhinostoma (Schlegel, 1837) -- valid -- Sao Paulo False 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
  Siphlophis cervinus (Laurenti, 1768) -- valid -- Panama Spotted Night Snake
  Siphlophis compressus (Daudin, 1803) -- valid -- Tropical Flat Snake
  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
  Sirenoscincus mobydick Miralles, Anjeriniaina, Hipsley, Müller, Glaw and Vences, 2012 -- invalid
  Sirenoscincus yamagishii Sakata and Hikida, 2003 -- invalid
  Sistrurus catenatus (Rafinesque-Schmaltz, 1818) -- valid -- Massasauga, Víbora-cascabel pigmea-norteña, Eastern Massasauga
  Sistrurus catenatus catenatus (Rafinesque-Schmaltz, 1818) -- invalid -- Eastern 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
  Smaug breyeri (Van Dam, 1921) -- valid -- Waterberg Dragon Lizard, Waterberg Girdled Lizard
  Smaug giganteus (Smith, 1844) -- valid -- Giant Girdled Lizard, Giant Dragon Lizard, Sungazer
  Smaug mossambicus (Fitzsimons, 1958) -- valid -- Gorongosa Girdled Lizard
  Smaug regius (Broadley, 1962) -- valid -- Regal Girdled Lizard
  Smaug vandami (Fitzsimons, 1930) -- valid -- Van Dam's Girdled Lizard
  Smaug warreni (Boulenger, 1908) -- valid -- Warren's Girdled 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 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
  Sphenomorphus acutus (Peters, 1864) -- valid -- Pointed-headed Sphenomorphus
  Sphenomorphus aignanus (Boulenger, 1898) -- valid
  Sphenomorphus alfredi (Boulenger, 1898) -- valid
  Sphenomorphus annectens (Boulenger, 1898) -- valid
  Sphenomorphus anomalopus (Boulenger, 1890) -- valid -- Long-toed Forest Skink
  Sphenomorphus anotus Greer, 1973 -- valid
  Sphenomorphus apalpebratus Datta-Roy, Das, Bauer, Lyngdoh-Tron and Karanth, 2013 -- valid
  Sphenomorphus bacboensis (Eremchenko, 2003) -- valid
  Sphenomorphus bignelli Schmidt, 1932 -- valid
  Sphenomorphus brunneus Greer and Parker, 1974 -- valid
  Sphenomorphus buenloicus Darevsky and Nguyen Van Sang, 1983 -- valid
  Sphenomorphus buettikoferi (Lidth de Jeude, 1905) -- valid
  Sphenomorphus bukitensis Grismer, 2007 -- invalid
  Sphenomorphus cameronicus Smith, 1924 -- valid -- Cameron Highlands Forest Skink
  Sphenomorphus capitolythos Shea and Michels, 2008 -- valid
  Sphenomorphus celebensis (Müller, 1894) -- valid
  Sphenomorphus cinereus Greer and Parker, 1974 -- valid
  Sphenomorphus concinnatus (Boulenger, 1887) -- valid -- Elegant Forest Skink
  Sphenomorphus consobrinus (Peters and Doria, 1878) -- valid
  Sphenomorphus cophias Boulenger, 1908 -- valid -- Tahan Mountain Forest Skink
  Sphenomorphus courcyanus (Annandale, 1912) -- valid -- Medog Skink
  Sphenomorphus cranei Schmidt, 1932 -- valid -- Crane's Skink
  Sphenomorphus crassus Inger, Lian, Lakim and Yambun, 2001 -- valid
  Sphenomorphus cryptotis Darevsky, Orlov and Cuc, 2004 -- valid
  Sphenomorphus cyanolaemus Inger and Hosmer, 1965 -- valid -- Blue-headed Forest Skink
  Sphenomorphus darlingtoni (Loveridge, 1945) -- valid
  Sphenomorphus derooyae (De Jong, 1927) -- valid
  Sphenomorphus diwata Brown and Rabor, 1967 -- valid -- Diwata Sphenomorphus
  Sphenomorphus dussumieri (A. M. C. Duméril and Bibron, 1839) -- valid -- Dussumier's Forest Skink
  Sphenomorphus fasciatus (Gray, 1845) -- valid -- Banded Sphenomorphus
  Sphenomorphus forbesi (Boulenger, 1888) -- valid
  Sphenomorphus fragilis (Macleay, 1877) -- valid
  Sphenomorphus fragosus Greer and Parker, 1967 -- valid
  Sphenomorphus fuscolineatus Greer and Shea, 2004 -- valid
  Sphenomorphus grandisonae Taylor, 1962 -- valid -- Grandison's Forest Skink
  Sphenomorphus granulatus (Boulenger, 1903) -- valid
  Sphenomorphus haasi Inger and Hosmer, 1965 -- valid
  Sphenomorphus helenae Cochran, 1927 -- valid -- Notaburi Forest Skink
  Sphenomorphus incognitus (Thompson, 1912) -- valid
  Sphenomorphus indicus (Gray, 1853) -- valid -- Indian Forest Skink, Himalayan Forest Skink
  Sphenomorphus ishaki Grismer, 2006 -- invalid
  Sphenomorphus jobiensis (Meyer, 1874) -- valid
  Sphenomorphus kinabaluensis (Bartlett, 1895) -- valid
  Sphenomorphus langkawiensis Grismer, 2008 -- invalid
  Sphenomorphus latifasciatus (Meyer, 1874) -- valid
  Sphenomorphus leptofasciatus Greer and Parker, 1974 -- valid
  Sphenomorphus lineopunctulatus Taylor, 1962 -- valid -- Line-spotted Forest Skink
  Sphenomorphus longicaudatus (de Rooij, 1915) -- valid
  Sphenomorphus loriae (Boulenger, 1898) -- valid
  Sphenomorphus louisiadensis (Boulenger, 1903) -- valid
  Sphenomorphus maculatus (Blyth, 1853) -- valid -- Spotted Forest Skink, Maculated Forest Skink
  Sphenomorphus maculatus maculatus (Blyth, 1853) -- valid
  Sphenomorphus maculatus mitanensis (Annandale, 1905) -- valid
  Sphenomorphus maculicollus Bacon, 1967 -- valid
  Sphenomorphus maindroni (Sauvage, 1879) -- valid
  Sphenomorphus maindroni maindroni (Sauvage, 1879) -- valid
  Sphenomorphus maindroni wolfi (Sternfeld, 1918) -- valid
  Sphenomorphus malayanus (Doria, 1888) -- valid -- Malayan Forest Skink
  Sphenomorphus megalops (Annandale, 1906) -- invalid
  Sphenomorphus melanopogon (A. M. C. Duméril and Bibron, 1839) -- valid
  Sphenomorphus meyeri (Doria, 1875) -- valid
  Sphenomorphus microtympanum Greer, 1973 -- invalid
  Sphenomorphus microtympanus Greer, 1973 -- valid
  Sphenomorphus mimicus Taylor, 1962 -- valid -- Dwarf Forest Skink
  Sphenomorphus mimikanus (Boulenger, 1914) -- valid
  Sphenomorphus minutus (Meyer, 1874) -- valid
  Sphenomorphus misolense (Vogt, 1928) -- invalid
  Sphenomorphus modiglianii (Boulenger, 1894) -- valid
  Sphenomorphus moszkowskii (Vogt, 1912) -- invalid
  Sphenomorphus muelleri (Schlegel, 1837) -- valid
  Sphenomorphus multisquamatus Inger, 1958 -- valid
  Sphenomorphus murudensis Smith, 1925 -- valid
  Sphenomorphus necopinatus (Brongersma, 1942) -- valid
  Sphenomorphus neuhaussi (Vogt, 1911) -- valid
  Sphenomorphus nigriventris (de Rooij, 1915) -- valid
  Sphenomorphus nigrolabris (Günther, 1873) -- valid
  Sphenomorphus nigrolineatus (Boulenger, 1897) -- valid
  Sphenomorphus oligolepis (Boulenger, 1914) -- valid
  Sphenomorphus orientalis (Shreve, 1940) -- valid
  Sphenomorphus papuae (Kinghorn, 1928) -- valid
  Sphenomorphus perhentianensis Grismer, Wood Jr. and J. Grismer, 2009 -- invalid
  Sphenomorphus praesignis (Boulenger, 1900) -- valid -- Blotched Forest Skink
  Sphenomorphus pratti (Boulenger, 1903) -- valid
  Sphenomorphus puncticentralis Iskandar, 1994 -- valid
  Sphenomorphus rarus Myers and Donnelly, 1991 -- valid
  Sphenomorphus sabanus Inger, 1958 -- valid -- Sabah Slender Skink
  Sphenomorphus sanana (Kopstein, 1926) -- valid
  Sphenomorphus sanaus (Kopstein, 1926) -- invalid
  Sphenomorphus sanctus (A. M. C. Duméril and Bibron, 1839) -- valid -- Java Forest Skink
  Sphenomorphus sanctus sanctus (A. M. C. Duméril and Bibron, 1839) -- valid
  Sphenomorphus sanctus tenggeranus Mertens, 1957 -- valid
  Sphenomorphus sarasinorum (Boulenger, 1897) -- valid
  Sphenomorphus schlegeli (Dunn, 1927) -- valid
  Sphenomorphus schultzei (Vogt, 1911) -- valid
  Sphenomorphus scotophilus (Boulenger, 1900) -- valid -- Selangor Forest Skink, Spotted Forest Skink
  Sphenomorphus scutatus (Peters, 1867) -- valid -- Palauan Skink
  Sphenomorphus sheai Nguyen, Nguyen, Van Devender, Bonkowski and Ziegler, 2013 -- valid -- Shea's Forest Skink
  Sphenomorphus shelfordi (Boulenger, 1900) -- valid
  Sphenomorphus sibuensis Grismer, 2006 -- invalid
  Sphenomorphus simus (Sauvage, 1879) -- valid
  Sphenomorphus solomonis (Boulenger, 1887) -- valid
  Sphenomorphus solomonis schodei (Vogt, 1912) -- invalid
  Sphenomorphus stellatus (Boulenger, 1900) -- valid -- Perak Forest Skink, Starry Forest Skink
  Sphenomorphus striatopunctatum (Ahl, 1925) -- invalid
  Sphenomorphus striolatus (Weber, 1890) -- valid
  Sphenomorphus taiwanensis Chen and Lue, 1987 -- valid
  Sphenomorphus tanahtinggi Inger, Lian, Lakim and Yambun, 2001 -- valid
  Sphenomorphus tanneri Greer and Parker, 1967 -- valid -- Tanner's Skink
  Sphenomorphus taylori Burt, 1930 -- valid -- Taylor's Solomon Skink
  Sphenomorphus temengorensis Grismer, Ahmad and Onn, 2009 -- invalid
  Sphenomorphus tenuiculus (Mocquard, 1890) -- valid
  Sphenomorphus tersus (Smith, 1916) -- valid -- Nakhon Si-Thammarat forest Skink, Thai Forest Skink
  Sphenomorphus tetradactylus (Darevsky and Orlov, 2005) -- valid
  Sphenomorphus tonkinensis Nguyen, Schmitz, Nguyen, Orlov, Böhme and Ziegler, 2011 -- valid -- Tonkin Forest Skink
  Sphenomorphus transversus Greer and Parker, 1971 -- valid
  Sphenomorphus tridigitus (Bourret, 1939) -- valid
  Sphenomorphus tritaeniatus (Bourret, 1937) -- valid
  Sphenomorphus tropidonotus (Boulenger, 1897) -- valid
  Sphenomorphus undulatus (Peters and Doria, 1878) -- valid
  Sphenomorphus vanheurni (Brongersma, 1942) -- valid
  Sphenomorphus variegatus (Peters, 1867) -- valid
  Sphenomorphus wau Shea and Allison, 2021 -- valid
  Sphenomorphus wollastoni (Boulenger, 1914) -- valid
  Sphenomorphus woodfordi (Boulenger, 1887) -- valid
  Sphenomorphus zimmeri (Ahl, 1933) -- valid
  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
  Spondylurus anegadae Hedges and Conn, 2012 -- valid -- Anegada Skink
  Spondylurus caicosae Hedges and Conn, 2012 -- valid -- Caicos Islands Skink
  Spondylurus culebrae Hedges and Conn, 2012 -- valid -- Culebra Skink
  Spondylurus fulgidus Cope, 1862 -- valid -- Jamaican Skink
  Spondylurus haitiae Hedges and Conn, 2012 -- valid -- Hispaniolan Four-lined Skink
  Spondylurus lineolatus (Noble and Hassler, 1933) -- valid -- Hispaniolan Ten-lined Skink, Lined Mabuya
  Spondylurus macleani (Mayer and Lazell, 2000) -- valid -- Carrot Rock Skink
  Spondylurus magnacruzae Hedges and Conn, 2012 -- valid -- Greater Saint Croix Skink
  Spondylurus martinae Hedges and Conn, 2012 -- valid -- Saint Martin Skink
  Spondylurus monae Hedges and Conn, 2012 -- valid -- Mona Skink
  Spondylurus monitae Hedges and Conn, 2012 -- valid -- Monito Skink
  Spondylurus nitidus (Garman, 1887) -- valid -- Puerto Rican Skink
  Spondylurus powelli Hedges and Conn, 2012 -- valid -- Anguilla Bank Skink
  Spondylurus semitaeniatus (Wiegmann, 1837) -- valid -- Lesser Virgin Islands Skink
  Spondylurus sloanii (Daudin, 1803) -- valid -- Virgin Islands Bronze Skink, Slippery Back Skink
  Spondylurus spilonotus (Wiegmann, 1837) -- valid -- Greater Virgin Islands Skink
  Spondylurus turksae Hedges and Conn, 2012 -- valid -- Turks Islands Skink
  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 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
  Stenolepis ridleyi Boulenger, 1887 -- valid -- Pernambuco Teiid
  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
  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
  Styporhynchus celebicus W. C. H. Peters and Doria, 1878 -- invalid
  Styporhynchus truncatus Peters, 1863 -- invalid
  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 calamitus Hillis, 1990 -- valid -- Calamitous Shadow Snake
  Synophis lasallei (Nicéforo-María, 1950) -- valid -- La Salle's Shadow Snake
  Synophis plectovertebralis Sheil and Grant, 2001 -- valid -- Braided Shadow Snake
  Tachygyia microlepis (A. M. C. Duméril and Bibron, 1839) -- valid
  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 chilensis (Schlegel, 1837) -- valid -- Chilean Slender Snake
  Tachymenis chilensis chilensis (Schlegel, 1837) -- valid
  Tachymenis chilensis coronellina Werner, 1898 -- valid
  Tachymenis elongata Despax, 1910 -- valid -- Depax's Slender Snake
  Tachymenis peruviana Wiegmann, 1835 -- valid -- Peru Slender Snake
  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
  Takydromus amurensis Peters, 1881 -- valid -- Amur Grass Lizard
  Takydromus dorsalis Stejneger, 1904 -- valid -- Sakishima Grass Lizard
  Takydromus formosanus Boulenger, 1894 -- valid -- Formosa Grass Lizard
  Takydromus hani Chou, Truong and Pauwels, 2001 -- valid -- South-East Asian Green Grass Lizard
  Takydromus haughtonianus Jerdon, 1870 -- valid -- Goalpora Grass Lizard
  Takydromus hsuehshanensis Lin and Cheng, 1981 -- valid
  Takydromus intermedius Stejneger, 1924 -- valid
  Takydromus khasiensis Boulenger, 1917 -- valid -- Java Grass Lizard, Khasi Hills Long-tailed Lizard
  Takydromus kuehnei Van Denburgh, 1909 -- valid
  Takydromus kuehnei kuehnei Van Denburgh, 1909 -- valid
  Takydromus kuehnei vietnamensis Ziegler and Bischoff, 1999 -- valid
  Takydromus luyeanus Lue and Lin, 2008 -- valid
  Takydromus sauteri Van Denburgh, 1909 -- valid -- Koshun Grass Lizard
  Takydromus septentrionalis Günther, 1864 -- valid -- China Grass Lizard
  Takydromus sexlineatus Daudin, 1802 -- valid -- Asian Grass Lizard, Six-striped Long-tailed Grass Lizard
  Takydromus sexlineatus ocellatus (Guérin-Méneville, 1829) -- valid
  Takydromus sexlineatus sexlineatus Daudin, 1802 -- valid
  Takydromus sikkimensis Günther, 1888 -- valid -- Sikkim Grass Lizard
  Takydromus smaragdinus Boulenger, 1887 -- valid -- Green Grass Lizard
  Takydromus stejnegeri Van Denburgh, 1912 -- valid
  Takydromus sylvaticus (Pope, 1928) -- valid -- Chung-an Ground Lizard
  Takydromus tachydromoides (Schlegel, 1838) -- valid -- Japanese Grass Lizard
  Takydromus tachydromoides oldi Walley, 1958 -- invalid
  Takydromus toyamai Takeda and Ota, 1996 -- valid -- Miyako Grass Lizard
  Takydromus viridipunctatus Lue and Lin, 2008 -- valid
  Takydromus wolteri Fischer, 1885 -- valid -- Mountain Grass Lizard
  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 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 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
  Techmarscincus jigurru (Covacevich, 1984) -- valid -- Bartle Frere Cool-skink
  Teiidae Gray, 1827 -- valid -- Tegus, Ground Lizards, New World Runners, Racerunners, Whiptails, Ameivas
  Teira dugesii (Milne-Edwards, 1829) -- valid -- Madeira Wall Lizard
  Teira dugesii dugesii (Milne-Edwards, 1829) -- valid
  Teira dugesii jogeri (Bischoff, Osenegg and Mayer, 1989) -- valid
  Teira dugesii mauli (Mertens, 1938) -- valid
  Teira dugesii selvagensis (Bischoff, Osenegg and Mayer, 1989) -- valid
  Teius oculatus (d'Orbigny and Bibron, 1837) -- valid
  Teius suquiensis Avila and Martori, 1991 -- valid
  Teius teyou (Daudin, 1802) -- valid -- Four-toed Tegu
  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
  Teretrurus Beddome, 1886 -- valid
  Teretrurus rhodogaster (Wall, 1921) -- valid -- Palni Mountain Burrowing Snake
  Teretrurus sanguineus (Beddome, 1867) -- valid -- Purple-red Earth Snake
  Tetradactylus africanus (Gray, 1838) -- valid -- Eastern Long-tailed Seps, African Whip Lizard
  Tetradactylus africanus africanus (Gray, 1838) -- valid -- Eastern Long-tailed Seps, African Whip Lizard
  Tetradactylus africanus fitzsimonsi Hewitt, 1915 -- valid -- Fitzsimons' Long-tailed Seps
  Tetradactylus breyeri Roux, 1907 -- valid -- Breyer's Long-tailed Seps, Breyer's Whip Lizard
  Tetradactylus eastwoodae Hewitt and Methuen, 1913 -- valid -- Eastwood's Long-tailed Seps
  Tetradactylus ellenbergeri (Angel, 1922) -- valid -- Ellen's Whip Lizard
  Tetradactylus seps (Linnaeus, 1758) -- valid -- Short-legged Seps, Five-toed Whip Lizard
  Tetradactylus tetradactylus (Daudin, 1802) -- valid -- Cape Long-tailed Seps, Longtail Whip Lizard
  Tetradactylus udzungwensis Salvidio, Menegon, Sindaco and Moyer, 2004 -- valid -- Udzungwa Long-tailed Seps
  Tetralepis Boettger, 1892 -- valid
  Tetralepis fruhstorferi Boettger, 1892 -- valid -- Bluebelly Java Snake
  Teuchocercus keyi Fritts and H. Smith, 1969 -- invalid
  Thalesius viridis (Werner, 1924) -- 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 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
  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 zhaoermii Guo, Liu, Feng and He, 2008 -- valid -- Sichuan Hot-spring Keel-back
  Thrasops flavigularis (Hallowell, 1852) -- valid -- Yellow-throated Bold-eyed Tree Snake
  Thrasops jacksonii Günther, 1895 -- valid -- Black Tree Snake
  Thrasops occidentalis Parker, 1940 -- valid -- Western Tree Snake, Black Tree Snake, Western Black Tree Snake
  Thrasops schmidti Loveridge, 1936 -- valid -- Schmidt's Bold-eyed Tree Snake
  Tiliqua adelaidensis (Peters, 1863) -- valid -- Pygmy Bluetongue Lizard
  Tiliqua gigas (Schneider, 1801) -- valid -- Giant Bluetongue Skink
  Tiliqua gigas evanescens Shea, 2000 -- valid
  Tiliqua gigas gigas (Schneider, 1801) -- valid
  Tiliqua gigas keiensis Oudemans, 1894 -- valid
  Tiliqua multifasciata Sternfeld, 1919 -- valid -- Centralian Bluetongue, Centralian Blue-Tongued Lizard
  Tiliqua nigrolutea (Quoy and Gaimard, 1824) -- valid -- Blotched Bluetongue, Southern Bluetongue, Blotched Blue-Tongued Lizard
  Tiliqua occipitalis (Peters, 1863) -- valid -- Western Bluetongue, Western Blue-Tongued Lizard
  Tiliqua rugosa (Gray, 1825) -- valid -- Shingleback Lizard, Shingle-Back, Stumpy Tail Lizard, Pinecone Lizard, Sleepy Lizard
  Tiliqua rugosa aspera Gray, 1845 -- valid
  Tiliqua rugosa konowi Mertens, 1958 -- valid
  Tiliqua rugosa palarra Shea, 2000 -- valid
  Tiliqua rugosa rugosa (Gray, 1825) -- valid
  Tiliqua scincoides (White, 1790) -- valid -- Common Bluetongue, Eastern Bluetongue, Northern Bluetongue, Eastern Blue-Tongued Lizard
  Tiliqua scincoides chimaerea Shea, 2000 -- valid
  Tiliqua scincoides intermedia Mitchell, 1955 -- valid -- Northern Bluetongue
  Tiliqua scincoides scincoides (White, 1790) -- valid -- Eastern Bluetongue, Eastern Blue-Tongued Lizard
  Timon lepidus (Daudin, 1802) -- valid -- Ocellated Lizard, Jewelled Lizard
  Timon lepidus ibericus (López-Seoane, 1884) -- valid
  Timon lepidus lepidus (Daudin, 1802) -- valid
  Timon lepidus oteroi (Castroviejo and Mateo, 1998) -- valid
  Timon pater (Lataste, 1880) -- valid
  Timon princeps (Blanford, 1874) -- valid -- Zagrosian Lizard
  Timon tangitanus (Boulenger, 1889) -- valid
  Tomodon dorsatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Pampas Snake
  Tomodon ocellatus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Ocellated Pampas Snake
  Tomodon orestes Harvey and Muñoz, 2004 -- valid
  Toxicodryas blandingii (Hallowell, 1844) -- valid -- Blandings Tree Snake
  Toxicodryas pulverulenta (Fischer, 1856) -- valid -- Fischer's Cat Snake
  Tracheloptychus madagascariensis Peters, 1854 -- valid -- Madagascar Keeled Cordylid
  Tracheloptychus petersi Grandidier, 1869 -- valid -- Peters' Keeled Cordylid
  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
  Trachyboa boulengeri Peracca, 1910 -- valid -- Northern Eyelash Boa
  Trachyboa gularis Peters, 1860 -- valid -- Southern Eyelash Boa
  Trachylepis acutilabris (Peters, 1862) -- valid -- Wedge-snouted Skink, Sharp-lipped Mabuya
  Trachylepis affinis (Gray, 1838) -- valid -- Senegal Mabuya
  Trachylepis albilabris (Hallowell, 1857) -- valid -- Guinea Mabuya
  Trachylepis angolensis (Monard, 1937) -- invalid
  Trachylepis atlantica (Schmidt, 1945) -- valid
  Trachylepis aurata (Linnaeus, 1758) -- invalid
  Trachylepis aurata transcaucasica (Chernov, 1926) -- invalid
  Trachylepis aureopunctata (Grandidier, 1867) -- valid -- Gold-spotted Mabuya
  Trachylepis bayonii (Bocage, 1872) -- valid -- Bayaõ's Skink, Bayon's Mabuya, Bayon's Skink
  Trachylepis bayonii bayonii (Bocage, 1872) -- valid
  Trachylepis bayonii huilensis (Laurent, 1964) -- invalid
  Trachylepis bayonii keniensis Loveridge, 1956 -- valid
  Trachylepis bensonii (Peters, 1867) -- valid -- Benson's Mabuya
  Trachylepis betsileana (Mocquard, 1906) -- valid -- Betsileo Mabuya
  Trachylepis binotata (Bocage, 1867) -- valid -- Ovambo Tree Skink, Bocage's Mabuya
  Trachylepis bocagii (Boulenger, 1887) -- valid -- Bocage's Skink
  Trachylepis boettgeri (Boulenger, 1887) -- valid -- Boettger's Mabuya
  Trachylepis boulengeri (Sternfeld, 1911) -- valid -- Boulenger's Mabuya
  Trachylepis brauni (Tornier, 1902) -- valid -- Braun's Mabuya
  Trachylepis brevicollis (Wiegmann, 1837) -- valid -- Short-necked Skink, Sudan Mabuya
  Trachylepis breviparietalis (Chabanaud, 1917) -- invalid
  Trachylepis buettneri (Matschie, 1893) -- valid
  Trachylepis capensis (Gray, 1831) -- valid -- Cape Skink, Cape Three-lined Skink
  Trachylepis chimbana (Boulenger, 1887) -- valid -- Chimba Skink, Chimban Mabuya
  Trachylepis comorensis (Peters, 1854) -- valid
  Trachylepis cristinae Sindaco, Metallinou, Pupin, Fasola and Carranza, 2012 -- valid -- Abd Al Kuri Skink
  Trachylepis depressa (Peters, 1854) -- valid -- Eastern Sand Skink
  Trachylepis dichroma Günther, Whiting and Bauer, 2005 -- valid -- Two-coloured Skink
  Trachylepis dumasi (Nussbaum and Raxworthy, 1995) -- valid
  Trachylepis elegans (Peters, 1854) -- valid -- Elegant Mabuya
  Trachylepis elegans delphinensis (Brygoo, 1983) -- valid
  Trachylepis elegans elegans (Peters, 1854) -- valid
  Trachylepis ferrarai (Lanza, 1978) -- valid -- Ferrara's Mabuya
  Trachylepis gravenhorstii (A. M. C. Duméril and Bibron, 1839) -- valid -- Gravenhorst's Mabuya
  Trachylepis hemmingi (Gans, Laurent and Pandit, 1965) -- valid -- Somali Mabuya
  Trachylepis hildae (Loveridge, 1953) -- invalid
  Trachylepis hildebrandtii (Peters, 1874) -- valid -- Hildebrandt's Skink
  Trachylepis hoeschi (Mertens, 1954) -- valid -- Hoesch's Mabuya, Hoesch's Skink
  Trachylepis homalocephala (Wiegmann, 1828) -- valid -- Red-Sided Skink
  Trachylepis infralineata (Boettger, 1913) -- valid
  Trachylepis irregularis (Lönnberg, 1922) -- valid -- Alpine Meadow Mabuya
  Trachylepis lacertiformis (Peters, 1854) -- valid -- Bronze Rock Skink
  Trachylepis laevis (Boulenger, 1907) -- valid -- Angolan Blue-tailed Skink
  Trachylepis lavarambo (Nussbaum and Raxworthy, 1998) -- valid
  Trachylepis loluiensis Kingdon and Spawls, 2010 -- valid -- Loloui Island Skink
  Trachylepis maculata (Gray, 1839) -- valid -- Spotted Mabuya
  Trachylepis maculilabris (Gray, 1845) -- valid -- Speckle-lipped Mabuya, Speckled-lipped Skink
  Trachylepis maculilabris casuarinae (Broadley, 1974) -- invalid
  Trachylepis madagascariensis (Mocquard, 1908) -- valid -- Malagasy Mabuya
  Trachylepis makolowodei Chirio, Ineich, Schmitz and Lebreton, 2008 -- valid -- Makolowodé's Trachylepis
  Trachylepis margaritifera (Peters, 1854) -- valid -- Rainbow Skink
  Trachylepis megalura (Peters, 1878) -- valid -- Grass Skink, Grass-top Skink, Long-tailed Skink
  Trachylepis mekuana (Chirio and Ineich, 2000) -- valid
  Trachylepis mlanjensis (Loveridge, 1953) -- valid -- Mulanje Skink
  Trachylepis nancycoutuae (Nussbaum and Raxworthy, 1998) -- valid
  Trachylepis nganghae Ineich and Chirio, 2004 -- valid
  Trachylepis occidentalis (Peters, 1867) -- valid -- Western Three-striped Skink
  Trachylepis ozorii (Bocage, 1893) -- valid
  Trachylepis pendeana (Ineich and Chirio, 2000) -- valid
  Trachylepis perrotetii (A. M. C. Duméril and Bibron, 1839) -- valid -- Teita Mabuya, African Red-sided Skink
  Trachylepis perrotetii perrotetii (A. M. C. Duméril and Bibron, 1839) -- valid
  Trachylepis perrotetii upembae (De Witte, 1953) -- valid
  Trachylepis planifrons (Peters, 1878) -- valid -- Tree Skink
  Trachylepis polytropis (Boulenger, 1903) -- valid -- Tropical Mabuya
  Trachylepis pulcherrima (De Witte, 1953) -- valid -- Beautiful Skink
  Trachylepis punctatissima (Smith, 1849) -- valid -- Speckled Rock Skink, Montane Speckled Skink
  Trachylepis punctulata (Bocage, 1872) -- valid -- Speckled Skink, Speckled Sand Skink
  Trachylepis quinquetaeniata (Lichtenstein, 1823) -- valid -- African Five-lined Skink, Rainbow Mabuya
  Trachylepis quinquetaeniata quinquetaeniata (Lichtenstein, 1823) -- valid
  Trachylepis quinquetaeniata riggenbachi (Sternfeld, 1917) -- valid
  Trachylepis quinquetaeniata scharica (Sternfeld, 1917) -- valid
  Trachylepis rodenburgi (Hoogmoed, 1974) -- valid -- Rodenburg's Mabuya
  Trachylepis sechellensis (A. M. C. Duméril and Bibron, 1839) -- valid -- Seychelles Mabuya
  Trachylepis septemtaeniata (Reuss, 1834) -- invalid
  Trachylepis socotrana (Peters, 1882) -- valid -- Socotra Skink
  Trachylepis sparsa (Mertens, 1954) -- valid -- Karasburg Tree Skink
  Trachylepis spilogaster (Peters, 1882) -- valid -- Kalahari Tree Skink, Spiny Mabuya
  Trachylepis striata (Peters, 1844) -- valid -- Striped Skink, African Striped Mabuya
  Trachylepis sulcata (Peters, 1867) -- valid -- Western Rock Skink
  Trachylepis sulcata ansorgii (Boulenger, 1907) -- valid -- Ansorge's Rock Skink
  Trachylepis sulcata sulcata (Peters, 1867) -- valid
  Trachylepis tandrefana (Nussbaum, Raxworthy and Ramanamanjato, 1999) -- valid
  Trachylepis tavaratra (Ramanamanjato, Nussbaum and Raxworthy, 1999) -- valid
  Trachylepis tessellata (Anderson, 1895) -- valid -- Tessellated Mabuya
  Trachylepis varia (Peters, 1867) -- valid -- Variable Skink
  Trachylepis variegata (Peters, 1870) -- valid -- Variegated Skink
  Trachylepis vato (Nussbaum and Raxworthy, 1994) -- valid -- Boulder Mabuya
  Trachylepis vezo (Ramanamanjato, Nussbaum and Raxworthy, 1999) -- valid
  Trachylepis vittata (Olivier, 1804) -- invalid
  Trachylepis volamenaloha (Nussbaum, Raxworthy and Ramanamanjato, 1999) -- valid
  Trachylepis wingati (Werner, 1908) -- valid -- Wingate's Skink
  Trachylepis wrightii (Boulenger, 1887) -- valid -- Wright's Mabuya
  Trachylepis wrightii ilotensis (Rendahl, 1939) -- valid
  Trachylepis wrightii wrightii (Boulenger, 1887) -- valid
  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
  Tretioscincus agilis (Ruthven, 1916) -- valid -- Smooth Tegu
  Tretioscincus bifasciatus (Duméril, 1851) -- valid -- Rio Magdalena Minitegu, Rio Magdalena Tegu
  Tretioscincus bifasciatus kugleri Shreve, 1947 -- invalid
  Tretioscincus oriximinensis Avila-Pires, 1995 -- valid -- Oriximina Lizard
  Tribolonotus annectens Zweifel, 1966 -- valid -- Zweifel's Helmet Skink
  Tribolonotus blanchardi Burt, 1930 -- valid -- Blanchard's Helmet Skink
  Tribolonotus brongersmai Cogger, 1972 -- valid -- Brongersma's Helmet Skink
  Tribolonotus gracilis de Rooij, 1909 -- valid
  Tribolonotus novaeguineae (Schlegel, 1834) -- valid -- Spiny Skink
  Tribolonotus ponceleti Kinghorn, 1937 -- valid -- Poncelet's Helmet Skink
  Tribolonotus pseudoponceleti Greer and Parker, 1968 -- valid -- False Poncelet's Helmet Skink
  Tribolonotus schmidti Burt, 1930 -- valid -- Schmidt's Helmet Skink
  Trimeresurus albolabris Gray, 1842 -- valid -- White-lipped Tree Viper, White-lipped Pitviper
  Trimeresurus andalasensis David, Vogel, Vijayakumar and Vidal, 2006 -- valid
  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 erythrurus (Cantor, 1839) -- valid -- Redtail Pitviper, Bamboo Pitviper
  Trimeresurus fasciatus (Boulenger, 1896) -- valid -- Banded Pit Viper
  Trimeresurus flavomaculatus (Gray, 1842) -- valid -- Philippine Pitviper
  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 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 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 macrolepis Beddome, 1862 -- valid
  Trimeresurus macrops Kramer, 1977 -- valid -- Kramer's Pit Viper, Large-eyed Pitviper
  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 nebularis Vogel, David and Pauwels, 2004 -- valid -- Cameron Highlands Pitviper, Clouded Pitviper
  Trimeresurus phuketensis Sumontha, Kunya, Pauwels, Nitikul and Punnadee, 2011 -- valid -- Phuket Pitviper
  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 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 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 yunnanensis K. P. Schmidt, 1925 -- valid -- Yunnan Bamboo Pitviper
  Trimerodytes balteatus Cope, 1895 -- invalid
  Trimetopon barbouri Dunn, 1930 -- valid -- Barbour's Tropical Ground Snake
  Trimetopon gracile (Günther, 1872) -- valid -- Günther's Tropical Ground Snake
  Trimetopon pliolepis Cope, 1894 -- valid -- Cope's Tropical Ground Snake
  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 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
  Trogonophis wiegmanni Kaup, 1830 -- valid -- Checkerboard Worm Lizard
  Trogonophis wiegmanni elegans (Gervais, 1835) -- valid
  Trogonophis wiegmanni wiegmanni (Kaup, 1830) -- valid
  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 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 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 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 dendrophiops Günther, 1883 -- 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 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 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
  Tropidophiidae Brongersma, 1951 -- valid -- Dwarf Boas
  Tropidophis battersbyi Laurent, 1949 -- valid -- Battersby's Dwarf Boa
  Tropidophis canus (Cope, 1868) -- valid -- Bahama-Wood Snake
  Tropidophis caymanensis Battersby, 1938 -- valid -- Cayman Islands Dwarf Boa
  Tropidophis caymanensis caymanensis Battersby, 1938 -- invalid
  Tropidophis caymanensis parkeri Grant, 1940 -- invalid
  Tropidophis caymanensis schwartzi Thomas, 1963 -- invalid
  Tropidophis celiae Hedges, Estrada and Díaz, 1999 -- valid -- Canasi Trope
  Tropidophis feicki Schwartz, 1957 -- valid -- Feick's Dwarf Boa
  Tropidophis fuscus Hedges and Garrido, 1992 -- valid -- Cuban Dusky Trope
  Tropidophis grapiuna Curcio, Sales Nunes, Suzart Argolo, Skuk and Rodrigues, 2012 -- valid
  Tropidophis greenwayi Barbour and Shreve, 1936 -- valid -- Caicos Trope, Ambergris Cay Dwarf Boa
  Tropidophis greenwayi greenwayi Barbour and Shreve, 1936 -- valid -- Big Ambergris Dwarf Boa
  Tropidophis greenwayi lanthanus Schwartz, 1963 -- valid
  Tropidophis haetianus (Cope, 1879) -- valid -- Hispaniolan Trope, Haitian Dwarf Boa
  Tropidophis haetianus haetianus (Cope, 1879) -- valid
  Tropidophis haetianus hemerus Schwartz, 1975 -- valid -- Hispaniolan Trope
  Tropidophis haetianus jamaicensis Stull, 1928 -- invalid -- Jamaican Brown Trope
  Tropidophis haetianus stejnegeri Grant, 1940 -- invalid
  Tropidophis haetianus stullae Grant, 1940 -- invalid
  Tropidophis haetianus tiburonensis Schwartz, 1975 -- valid -- Haitian Dwarf Boa
  Tropidophis hendersoni Hedges and Garrido, 2002 -- valid
  Tropidophis maculatus (Bibron in Ramon de la Sagra, 1840) -- valid -- Spotted Dwarf Boa, Spotted Red Trope
  Tropidophis melanurus (Schlegel, 1837) -- valid -- Dusky Dwarf Boa, Giant Trope, Wood Snake
  Tropidophis melanurus bucculentus (Cope, 1868) -- invalid
  Tropidophis melanurus dysodes Schwartz and Thomas, 1960 -- valid -- Wood Snake
  Tropidophis melanurus ericksoni Schwartz and Thomas, 1960 -- valid -- Wood Snake
  Tropidophis melanurus melanurus (Schlegel, 1837) -- valid
  Tropidophis morenoi Hedges, Garrido and Díaz, 2001 -- valid -- Zebra Trope
  Tropidophis nigriventris Bailey, 1937 -- valid -- Dark-bellied Trope, Blackbelly Dwarf Boa
  Tropidophis nigriventris hardyi Schwartz and Garrido, 1975 -- invalid
  Tropidophis nigriventris nigriventris Bailey, 1937 -- invalid
  Tropidophis pardalis (Gundlach, 1840) -- valid -- Spotted Brown Trope, Leopard Dwarf Boa
  Tropidophis paucisquamis (Müller in Schenkel, 1901) -- valid -- Brazilian Dwarf Boa
  Tropidophis pilsbryi Bailey, 1937 -- valid -- Oriente White-necked Trope, Pilsbry's Dwarf Boa
  Tropidophis pilsbryi galacelidus Schwartz and Garrido, 1975 -- invalid
  Tropidophis pilsbryi pilsbryi Bailey, 1937 -- invalid
  Tropidophis preciosus Curcio, Sales Nunes, Suzart Argolo, Skuk and Rodrigues, 2012 -- valid
  Tropidophis semicinctus (Gundlach and Peters, 1864) -- valid -- Banded Dwarf Boa, Yellow-banded Trope
  Tropidophis spiritus Hedges and Garrido, 1999 -- valid -- Sancti Spiritus Trope
  Tropidophis taczanowskyi (Steindachner, 1880) -- valid -- Taczanowsky's Dwarf Boa
  Tropidophis wrighti Stull, 1928 -- valid -- Gracile Banded Trope, Wright's Dwarf Boa
  Tropidophis xanthogaster Domínguez, Moreno and Hedges, 2006 -- valid -- Guanahacabibes Trope
  Tropidophorus assamensis Annandale, 1912 -- valid -- North-Eastern Waterskink
  Tropidophorus baconi Hikida, Riyanto and Ota, 2003 -- valid
  Tropidophorus baviensis Bourret, 1939 -- valid -- Bavi Water Skink, Bavay's Keeled Skink
  Tropidophorus beccarii Peters, 1871 -- valid -- Beccari's Keeled Skink
  Tropidophorus berdmorei (Blyth, 1853) -- valid -- Berdmore's Water Skink
  Tropidophorus boehmei Nguyen, Nguyen, Schmitz, Orlov and Ziegler, 2010 -- valid -- Boehme's Water Skink
  Tropidophorus brookei (Gray, 1845) -- valid -- Brook's Keeled Skink
  Tropidophorus cocincinensis A. M. C. Duméril and Bibron, 1839 -- valid -- Cochinchinese Water Skink
  Tropidophorus davaoensis Bacon, 1980 -- valid
  Tropidophorus grayi Günther, 1861 -- valid -- Gray's Keeled Skink
  Tropidophorus guangxiensis Wen, 1992 -- valid
  Tropidophorus hainanus Smith, 1923 -- valid -- Hainan Water Skink
  Tropidophorus hangnam Chuaynkern, Nabhitabhata, Inthara, Kamsook and Somsri, 2005 -- valid
  Tropidophorus iniquus Lidth de Jeude, 1905 -- valid
  Tropidophorus laotus Smith, 1923 -- valid -- Laotian Keeled Skink
  Tropidophorus latiscutatus Hikida, Orlov, Nabhitabhata and Ota, 2002 -- valid
  Tropidophorus matsuii Hikida, Orlov, Nabhitabhata and Ota, 2002 -- valid
  Tropidophorus microlepis Günther, 1861 -- valid -- Small-scaled Water Skink
  Tropidophorus micropus Lidth de Jeude, 1905 -- valid
  Tropidophorus misaminius Stejneger, 1908 -- valid -- Misamis Waterside Skink
  Tropidophorus mocquardii Boulenger, 1895 -- valid
  Tropidophorus murphyi Hikida, Orlov, Nabhitabhata and Ota, 2002 -- valid -- Murphy's Water Skink
  Tropidophorus noggei Ziegler, Thanh and Thanh, 2005 -- valid -- Nogge's Water Skink
  Tropidophorus partelloi Stejneger, 1910 -- valid -- Partello's Waterside Skink
  Tropidophorus perplexus Barbour, 1921 -- valid
  Tropidophorus robinsoni Smith, 1919 -- valid -- Robinson's Keeled Skink, Robinson's Water Skink
  Tropidophorus sinicus Boettger, 1886 -- valid -- Chinese Water Skink
  Tropidophorus thai Smith, 1919 -- valid -- Thai Stream Skink, Thai Water Skink
  Tropidosaura cottrelli (Hewitt, 1925) -- valid -- Cottrell's Mountain Lizard
  Tropidosaura essexi Hewitt, 1927 -- valid -- Essex's Mountain Lizard
  Tropidosaura gularis Hewitt, 1927 -- valid -- Cape Mountain Lizard, Yellow-striped Mountain Lizard
  Tropidosaura montana (Gray in Griffith, 1831) -- valid -- Common Mountain Lizard, Green-striped Mountain Lizard
  Tropidosaura montana montana (Gray in Griffith, 1831) -- valid -- Green-striped Mountain Lizard
  Tropidosaura montana natalensis Fitzsimons, 1947 -- valid
  Tropidosaura montana rangeri Hewitt, 1926 -- valid -- Ranger's Mountain Lizard
  Tropidoscincus aubrianus Bocage, 1873 -- valid
  Tropidoscincus boreus Sadlier and Bauer, 2000 -- valid
  Tropidoscincus variabilis (Bavay, 1869) -- valid
  Tumbunascincus luteilateralis (Covacevich and McDonald, 1980) -- valid -- Orange-speckled Forest-skink
  Tupinambis longilineus Avila-Pires, 1995 -- valid
  Tupinambis palustris Manzani and Abe, 2002 -- valid
  Tupinambis quadrilineatus Manzani and Abe, 1997 -- valid
  Tupinambis teguixin (Linnaeus, 1758) -- valid -- Common Golden Tegu, Black Tegu, Golden Tegu
  Tupinambis teguixin sebastiani Müller, 1968 -- invalid
  Typhlacontias brevipes Fitzsimons, 1938 -- valid -- Short Blind Dart Skink
  Typhlacontias gracilis Roux, 1907 -- valid -- Roux's Blind Dart Skink
  Typhlacontias johnsonii Andersson, 1916 -- valid -- Johnson's Western Burrowing Skink, Johnson's Burrowing Skink
  Typhlacontias kataviensis Broadley, 2006 -- valid -- Katavi Blind Dart Skink
  Typhlacontias punctatissimus Bocage, 1873 -- valid -- Speckled Western Burrowing Skink, Dotted Blind Dart Skink
  Typhlacontias punctatissimus bogerti Laurent, 1964 -- valid -- Bogert's Western Burrowing Skink, Bogert's Dotted Blind Dart Skink
  Typhlacontias punctatissimus brainei Haacke, 1997 -- valid
  Typhlacontias punctatissimus punctatissimus Bocage, 1873 -- valid
  Typhlacontias rohani Angel, 1923 -- valid -- Rohan's Blind Dart Skink
  Typhlacontias rudebecki Haacke, 1997 -- valid -- Rudebeck's Western Burrowing Skink, Rudebeck's Blind Dart Skink
  Typhlopidae Merrem, 1820 -- valid -- Blind Snakes, Typical Blind Snakes, Blindsnakes
  Typhlops agoralionis Thomas and Hedges, 2007 -- valid -- La Hotte Blindsnake
  Typhlops ahsanai Khan, 1999 -- invalid
  Typhlops amoipira Rodrigues and Juncá, 2002 -- invalid
  Typhlops anchaurus Thomas and Hedges, 2007 -- invalid
  Typhlops andasibensis Wallach and Glaw, 2009 -- invalid
  Typhlops annae Breuil, 1999 -- invalid
  Typhlops anousius Thomas and Hedges, 2007 -- invalid
  Typhlops arator Thomas and Hedges, 2007 -- invalid
  Typhlops arenarius (Grandidier, 1872) -- invalid
  Typhlops biminiensis Richmond, 1955 -- invalid
  Typhlops biminiensis epactia Thomas, 1968 -- invalid
  Typhlops biminiensis paradoxus Thomas, 1968 -- invalid
  Typhlops boettgeri Boulenger, 1893 -- invalid
  Typhlops bothriorhynchus Günther, 1864 -- invalid
  Typhlops brongersmianus Vanzolini, 1976 -- invalid
  Typhlops caecatus Jan, 1864 -- invalid
  Typhlops canlaonensis Taylor, 1917 -- invalid
  Typhlops capitulatus Richmond, 1964 -- valid -- Richmond's Worm Snake
  Typhlops cariei Hoffstetter, 1946 -- invalid
  Typhlops castanotus Wynn and Leviton, 1993 -- invalid
  Typhlops caymanensis Sackett, 1940 -- invalid
  Typhlops collaris Wynn and Leviton, 1993 -- invalid
  Typhlops comorensis Boulenger, 1889 -- invalid
  Typhlops conradi Peters, 1875 -- invalid
  Typhlops contorhinus Thomas and Hedges, 2007 -- invalid
  Typhlops costaricensis Jiménez and Savage, 1963 -- invalid
  Typhlops cuneirostris Peters, 1879 -- invalid
  Typhlops decorsei Mocquard, 1901 -- invalid
  Typhlops diardii Schlegel, 1839 -- invalid
  Typhlops diardii diardii Schlegel, 1839 -- invalid
  Typhlops diardii platyventris Khan, 1998 -- invalid
  Typhlops disparilis Jan, 1860 -- invalid
  Typhlops domerguei Roux-Estève, 1980 -- invalid
  Typhlops dominicanus Stejneger, 1904 -- invalid
  Typhlops elegans Peters, 1868 -- invalid
  Typhlops eperopeus Thomas and Hedges, 2007 -- valid -- Bahoruco Blindsnake
  Typhlops etheridgei Wallach, 2002 -- invalid
  Typhlops exiguus Jan, 1864 -- invalid
  Typhlops filiformis A. M. C. Duméril and Bibron, 1844 -- invalid
  Typhlops fletcheri Wall, 1919 -- invalid
  Typhlops fuscus (A. H. A. Duméril in A. M. C. Duméril and A. H. A. Duméril, 1851) -- invalid
  Typhlops giadinhensis Bourret, 1937 -- invalid
  Typhlops golyathi Domínguez and Moreno, 2009 -- invalid
  Typhlops gonavensis Richmond, 1964 -- valid -- Gonave Island Worm Snake
  Typhlops granti Ruthven and Gaige, 1935 -- invalid -- Grant's Blind Snake, Grant's Blindsnake
  Typhlops hectus Thomas, 1974 -- valid -- Thomas' Worm Snake
  Typhlops hypogius Savage, 1950 -- invalid
  Typhlops hypomethes Hedges and Thomas, 1991 -- invalid -- Coastal Blindsnake
  Typhlops hypsobothrius Werner, 1917 -- invalid
  Typhlops jamaicensis (Shaw, 1802) -- valid -- Jamaica Worm Snake
  Typhlops jerdoni Boulenger, 1890 -- invalid
  Typhlops khoratensis Taylor, 1962 -- invalid
  Typhlops klemmeri Taylor, 1962 -- invalid
  Typhlops koekkoeki Brongersma, 1934 -- invalid
  Typhlops koshunensis Oshima, 1916 -- invalid
  Typhlops lankaensis Taylor, 1947 -- invalid
  Typhlops lazelli Wallach and Pauwels, 2004 -- invalid
  Typhlops lehneri Roux, 1926 -- invalid
  Typhlops leptolepis Domínguez, Fong and Iturriaga, 2013 -- valid
  Typhlops leucomelas Boulenger, 1890 -- invalid
  Typhlops longissimus (A. M. C. Duméril and Bibron, 1844) -- invalid
  Typhlops loveridgei Constable, 1949 -- invalid
  Typhlops lumbricalis (Linnaeus, 1758) -- valid -- Earthworm Blind Snake
  Typhlops luzonensis Taylor, 1919 -- invalid
  Typhlops madagascariensis Boettger, 1877 -- invalid
  Typhlops madgemintonae Khan, 1999 -- invalid
  Typhlops madgemintonae madgemintonae Khan, 1999 -- invalid
  Typhlops madgemintonae shermani Khan, 1999 -- invalid
  Typhlops malcolmi Taylor, 1947 -- invalid
  Typhlops manilae Taylor, 1919 -- invalid
  Typhlops manni Loveridge, 1941 -- invalid
  Typhlops meszoelyi Wallach, 1999 -- invalid
  Typhlops microcephalus Werner, 1909 -- invalid
  Typhlops microstomus Cope, 1866 -- invalid -- Serpiente-ciega yucateca
  Typhlops minuisquamus Dixon and Hendricks, 1979 -- invalid
  Typhlops monastus Thomas, 1966 -- invalid
  Typhlops monastus geotomus Thomas, 1966 -- invalid
  Typhlops monensis Schmidt, 1926 -- invalid -- Mona Blind Snake, Mona Blindsnake
  Typhlops mucronatus Boettger, 1880 -- invalid
  Typhlops muelleri Schlegel, 1839 -- invalid
  Typhlops notorachius Thomas and Hedges, 2007 -- invalid
  Typhlops oatesii Boulenger, 1890 -- invalid
  Typhlops ocularis Parker, 1927 -- invalid
  Typhlops oxyrhinus Domínguez and Diaz, 2011 -- valid
  Typhlops pachyrhinus Domínguez and Diaz, 2011 -- valid
  Typhlops pammeces Günther, 1864 -- invalid
  Typhlops paucisquamus Dixon and Hendricks, 1979 -- invalid
  Typhlops perimychus Thomas and Hedges, 2007 -- invalid
  Typhlops platycephalus (A. M. C. Duméril and Bibron, 1844) -- invalid -- Flat-headed Blindsnake
  Typhlops platyrhynchus Sternfeld, 1910 -- invalid
  Typhlops porrectus Stoliczka, 1871 -- invalid
  Typhlops proancylops Thomas and Hedges, 2007 -- valid -- La Selle Blindsnake
  Typhlops pusillus Barbour, 1914 -- valid -- Hispaniola Worm Snake
  Typhlops rajeryi Renoult and Raselimanana, 2009 -- invalid
  Typhlops reticulatus (Linnaeus, 1758) -- invalid
  Typhlops reuteri Boettger, 1881 -- invalid
  Typhlops richardi A. M. C. Duméril and Bibron, 1844 -- invalid
  Typhlops richardi catapontus Thomas, 1966 -- invalid
  Typhlops rostellatus Stejneger, 1904 -- valid -- Puerto Rican Wetland Blind Snake, Puerto Rican Wetland Blindsnake, Puerto Rican Worm Snake
  Typhlops roxaneae Wallach, 2001 -- invalid
  Typhlops ruber Boettger, 1897 -- invalid
  Typhlops ruficaudus (Gray, 1845) -- invalid
  Typhlops satelles Thomas and Hedges, 2007 -- invalid
  Typhlops schmutzi Auffenberg, 1980 -- invalid
  Typhlops schwartzi Thomas, 1989 -- valid -- Schwartz' Worm Snake
  Typhlops siamensis Günther, 1864 -- invalid
  Typhlops socotranus Boulenger, 1889 -- invalid
  Typhlops stadelmani Schmidt, 1936 -- invalid
  Typhlops sulcatus Cope, 1868 -- valid -- Sulcate Blind Snake, Sulcate Blindsnake, Island Worm Snake
  Typhlops sylleptor Thomas and Hedges, 2007 -- valid -- Pestel Blindsnake
  Typhlops syntherus Thomas, 1965 -- valid -- Barahona Worm Snake
  Typhlops tasymicris Thomas, 1974 -- invalid
  Typhlops tenebrarum Taylor, 1947 -- invalid
  Typhlops tenuicollis (Peters, 1864) -- invalid
  Typhlops tenuis Salvin, 1860 -- invalid
  Typhlops tetrathyreus Thomas, 1989 -- valid -- Haitian Worm Snake
  Typhlops thurstoni Boettger, 1890 -- invalid
  Typhlops titanops Thomas, 1989 -- valid -- Titan Worm Snake
  Typhlops trangensis Taylor, 1962 -- invalid
  Typhlops trinitatus Richmond, 1965 -- invalid -- Trinidad Worm Snake
  Typhlops tycherus Townsend, Wilson, Ketzler and Luque-Montes, 2008 -- invalid
  Typhlops veddae Taylor, 1947 -- invalid
  Typhlops vermicularis Merrem, 1820 -- invalid
  Typhlops violaceus Taylor, 1947 -- invalid
  Typhlops wilsoni Wall, 1908 -- invalid
  Typhlops yonenagae Rodrigues, 1991 -- invalid
  Typhlops zenkeri Sternfeld, 1908 -- invalid
  Typhlosaurus braini Haacke, 1964 -- valid -- Haacke's Legless Skink
  Typhlosaurus caecus (Cuvier, 1816) -- valid -- Southern Blind Legless Skink, Cuvier's Legless Skink
  Typhlosaurus lomiae Haacke, 1986 -- valid -- Lomi's Blind Legless Skink
  Typhlosaurus meyeri Boettger, 1894 -- valid -- Meyer's Blind Legless Skink, Variable Blind Legless Skink
  Typhlosaurus vermis Boulenger, 1887 -- valid -- Boulenger's Legless Skink, Pink Blind Legless Skink
  Tytthoscincus aesculeticola (Inger, Lian, Lakim and Yambun, 2001) -- valid
  Tytthoscincus atrigularis (Stejneger, 1908) -- valid -- Zamboanga Sphenomorphus
  Tytthoscincus biparietalis (Taylor, 1918) -- valid -- Sulu Sphenomorphus
  Tytthoscincus hallieri (Lidth de Jeude, 1905) -- valid
  Tytthoscincus parvus (Boulenger, 1897) -- valid
  Ungaliophis continentalis Müller, 1880 -- valid -- Boa-enana del Istmo
  Ungaliophis panamensis K. P. Schmidt, 1933 -- valid
  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 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
  Uromacerina ricardinii (Peracca, 1897) -- valid -- Sao Paulo Sharp Snake
  Uropeltidae Müller, 1832 -- valid -- Pipe Snakes, Shield-tailed Snakes
  Uropeltis Cuvier, 1829 -- valid
  Uropeltis arcticeps (Günther, 1875) -- valid -- Tirunelveli Earth Snake
  Uropeltis beddomii (Günther, 1862) -- valid -- Beddome's Earth Snake
  Uropeltis bhupathyi Jins, Sampaio and Gower, 2018 -- valid -- Bhupathy's Shieldtail
  Uropeltis bicatenata (Günther, 1864) -- valid -- Bicatenate Uropeltis, Two-chained Uropeltis
  Uropeltis broughami (Beddome, 1878) -- valid -- Brougham's Earth Snake
  Uropeltis ceylanica Cuvier, 1829 -- valid -- Ceylon Earth Snake
  Uropeltis dindigalensis (Beddome, 1877) -- valid -- Sirumalai Hills Earth Snake
  Uropeltis ellioti (Gray, 1858) -- valid -- Elliot's Earth Snake
  Uropeltis grandis (Beddome, 1867) -- valid -- Smith's Earth Snake
  Uropeltis liura (Günther, 1875) -- valid -- Günther's Earth Snake
  Uropeltis macrolepis (Peters, 1862) -- valid -- Bombay Earth Snake
  Uropeltis macrolepis macrolepis (Peters, 1862) -- valid
  Uropeltis macrolepis mahableshwarensis Chari, 1955 -- valid
  Uropeltis macrorhyncha (Beddome, 1877) -- valid -- Anamally Earth Snake
  Uropeltis maculata (Beddome, 1878) -- valid -- Spotted Earth Snake
  Uropeltis madurensis (Beddome, 1878) -- valid -- Madura Earth Snake
  Uropeltis myhendrae (Beddome, 1886) -- valid -- Boulenger's Earth Snake
  Uropeltis nitida (Beddome, 1878) -- valid -- Southern Earth Snake
  Uropeltis ocellata (Beddome, 1863) -- valid -- Ocellated Earth Snake, Ocellate Shieldtail
  Uropeltis ocellata gansi Rajendran, 1979 -- valid
  Uropeltis ocellata krishnasami Rajendran, 1979 -- valid
  Uropeltis ocellata ocellata (Beddome, 1863) -- valid
  Uropeltis petersi (Beddome, 1878) -- valid -- Shieldtail Earth Snake
  Uropeltis phillipsi (Nicholls, 1929) -- invalid
  Uropeltis phipsonii (Mason, 1888) -- valid -- Phipson's Shieldtail
  Uropeltis pulneyensis (Beddome, 1863) -- valid -- Indian Earth Snake, Palni Shieldtail
  Uropeltis rubrolineata (Günther, 1875) -- valid -- Red-lined Earth Snake
  Uropeltis rubromaculata (Beddome, 1867) -- valid -- Red-spotted Earth Snake
  Uropeltis shorttii (Beddome, 1863) -- valid -- Shevaroy Hills Earth Snake
  Uropeltis woodmasoni (Theobald, 1876) -- valid -- Woodmason's Earth Snake
  Urotheca decipiens (Günther, 1893) -- valid -- Pale Ground Snake
  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
  Vanzosaura rubricauda (Boulenger, 1902) -- valid -- Red-tailed Vanzosaur
  Varzea altamazonica (Miralles, Barrio-Amoros, Rivas and Chaparro-Auza, 2006) -- valid
  Varzea bistriata (Spix, 1825) -- valid -- Two-striped Mabuya
  Vhembelacerta rupicola (Fitzsimons, 1933) -- valid -- Soutpansberg Rock Lizard
  Vietnascincus rugosus Darevsky and Orlov, 1994 -- 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 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 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 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 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 lotievi Nilson, Tuniyev, Orlov, Hoggren and Andrén, 1995 -- valid -- Lotiev's Viper
  Vipera magnifica Tuniyev and Ostrovskikh, 2001 -- valid
  Vipera monticola Saint Girons, 1953 -- valid -- Mountain Viper
  Vipera olguni (Tuniyev, Avci, Tuniyev, A. L. Agasian and L. A. Agasian, 2012) -- valid
  Vipera orlovi Tuniyev and Ostrovskikh, 2001 -- valid
  Vipera pontica Billing, Nilson and Sattler, 1990 -- valid -- Black Sea Viper
  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 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 transcaucasiana Boulenger, 1913 -- valid
  Vipera ursinii (Bonaparte, 1835) -- valid -- Meadow Viper, Orsinis Viper
  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
  Voeltzkowia fierinensis (Grandidier, 1869) -- invalid
  Voeltzkowia lineata (Mocquard, 1901) -- invalid
  Voeltzkowia mira Boettger, 1893 -- valid
  Voeltzkowia petiti (Angel, 1924) -- invalid
  Voeltzkowia rubrocaudata (Grandidier, 1869) -- invalid
  Xantusia arizonae Klauber, 1931 -- valid -- Arizona Night Lizard
  Xantusia bezyi Papenfuss, Macey and Schulte, 2001 -- valid -- Bezy's Night Lizard
  Xantusia bolsonae Webb, 1970 -- valid -- Lagartija-escofina de Mapimí, Bolson Night Lizard
  Xantusia extorris Webb, 1965 -- valid
  Xantusia gilberti Van Denburgh, 1895 -- valid
  Xantusia gracilis Grismer and Galvan, 1986 -- valid -- Sandstone Night Lizard
  Xantusia henshawi Stejneger, 1893 -- valid -- Granite Night Lizard, Henshaw's Night Lizard, Lagartija-escofina de granito
  Xantusia jaycolei R. L. Bezy, K. B. Bezy and Bolles, 2008 -- valid
  Xantusia riversiana Cope, 1883 -- valid -- Island Night Lizard
  Xantusia riversiana reticulata H. M. Smith, 1946 -- valid -- San Clemente Night Lizard
  Xantusia riversiana riversiana Cope, 1883 -- valid -- San Nicolas Night Lizard
  Xantusia sanchezi R. L. Bezy and Flores-Villela, 1999 -- valid
  Xantusia sherbrookei R. L. Bezy, K. B. Bezy and Bolles, 2008 -- valid
  Xantusia sierrae R. L. Bezy, 1967 -- valid -- Sierra Night Lizard
  Xantusia vigilis Baird, 1859 -- valid -- Desert Night Lizard, Lagartija-escofina de desierto
  Xantusia wigginsi Savage, 1952 -- valid -- Wiggins' Night Lizard
  Xantusiidae -- valid -- night lizards
  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 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
  Xenodermatidae -- invalid
  Xenodermus javanicus Reinhardt, 1836 -- valid -- Xenodermine Snake, Java Tubercle Snake, Dragon Snake
  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 guentheri Boulenger, 1894 -- valid -- Günther's False Fer-de-lance
  Xenodon histricus (Jan, 1863) -- valid -- Jan's Hognose Snake
  Xenodon matogrossensis (Scrocchi and Cruz, 1993) -- valid
  Xenodon merremii (Wagler, 1824) -- valid -- Wagler's Snake
  Xenodon nattereri (Steindachner, 1867) -- valid
  Xenodon neuwiedii Günther, 1863 -- valid -- Neuwied's False Fer-de-lance
  Xenodon pulcher (Jan, 1863) -- valid
  Xenodon rabdocephalus (Wied-Neuwied, 1824) -- valid -- Culebra-engañosa norteña, False Fer-de-lance
  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
  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
  Xenosauridae -- valid -- knob-scaled lizards
  Xenosaurus agrenon King and Thompson, 1968 -- valid -- Mountain Knob-scaled Lizard
  Xenosaurus grandis (Gray, 1856) -- valid -- Xenosaurio mayor, Knob-scaled Lizard
  Xenosaurus grandis arboreus Lynch and Smith, 1965 -- invalid
  Xenosaurus grandis grandis (Gray, 1856) -- valid
  Xenosaurus grandis sanmartinensis Werler and Shannon, 1961 -- valid -- San Martin Knob-scaled Lizard
  Xenosaurus mendozai Nieto-Montes de Oca, García-Vázquez, Zúñiga-Vega and Schmidt-Ballardo, 2013 -- valid
  Xenosaurus newmanorum Taylor, 1949 -- valid -- Xenosaurio de Newman, Newman's Knob-scaled Lizard
  Xenosaurus penai Pérez Ramos, de la Riva and Campbell, 2000 -- valid -- Pena's Knob-scaled Lizard
  Xenosaurus phalaroanthereon Nieto-Montes de Oca, Campbell and Flores-Villela, 2001 -- valid -- Chin-spotted Knob-scaled Lizard
  Xenosaurus platyceps King and Thompson, 1968 -- valid -- Xenosaurio cabeza plana, Flathead Knob-scaled Lizard
  Xenosaurus rackhami Stuart, 1941 -- valid -- Rackham's Knob-scaled Lizard
  Xenosaurus rectocollaris Smith and Iverson, 1993 -- valid -- Pallid Knob-scaled Lizard
  Xenosaurus tzacualtipantecus Woolrich-Piña and Smith, 2012 -- valid -- Zacualtipán Knob-scaled Lizard
  Xenotyphlopidae Vidal, Marin, Morini, Donnellan, Branch, Thomas et al., 2010 -- valid
  Xenotyphlops grandidieri (Mocquard, 1905) -- valid
  Xenotyphlops mocquardi Wallach, Mercurio and Andreone, 2007 -- invalid
  Xyelodontophis uluguruensis Broadley and Wallach, 2002 -- valid -- Dagger-tooth Vine Snake
  Zamenis hohenackeri (Strauch, 1873) -- valid -- Transcaucasian Rat Snake
  Zamenis hohenackeri hohenackeri (Strauch, 1873) -- valid
  Zamenis hohenackeri tauricus (Werner, 1898) -- valid
  Zamenis lineatus (Camerano, 1891) -- valid -- Striped Aesculapian Rat Snake
  Zamenis longissimus (Laurenti, 1768) -- valid -- Aesculapian Snake
  Zamenis persicus (Werner, 1913) -- valid -- Persian Rat Snake
  Zamenis situla (Linnaeus, 1758) -- valid -- European Ratsnake, Leopard Snake
  Zonosaurus aeneus (Grandidier, 1872) -- valid -- Bronze Girdled Lizard
  Zonosaurus anelanelany Raselimanana, Raxworthy and Nussbaum, 2000 -- valid
  Zonosaurus bemaraha Raselimanana, Raxworthy and Nussbaum, 2000 -- valid
  Zonosaurus boettgeri Steindachner, 1891 -- valid -- Boettger's Girdled Lizard
  Zonosaurus brygooi Lang and Böhme, 1990 -- valid -- Brygoo's Girdled Lizard
  Zonosaurus haraldmeieri Brygoo and Böhme, 1985 -- valid
  Zonosaurus karsteni (Grandidier, 1869) -- valid -- Karsten's Girdled Lizard
  Zonosaurus laticaudatus (Grandidier, 1869) -- valid -- Western Girdled Lizard
  Zonosaurus madagascariensis (Gray, 1831) -- valid -- Madagascar Girdled Lizard
  Zonosaurus madagascariensis insulanus Brygoo, 1985 -- valid
  Zonosaurus madagascariensis madagascariensis (Gray, 1831) -- valid
  Zonosaurus maramaintso Raselimanana, Nussbaum and Raxworthy, 2006 -- valid
  Zonosaurus maximus Boulenger, 1896 -- valid -- Southeastern Girdled Lizard
  Zonosaurus ornatus (Gray, 1831) -- valid -- Ornate Girdled Lizard
  Zonosaurus quadrilineatus (Grandidier, 1867) -- valid -- Four-lined Girdled Lizard
  Zonosaurus rufipes (Boettger, 1881) -- valid -- Red-legged Girdled Lizard
  Zonosaurus subunicolor (Boettger, 1881) -- valid
  Zonosaurus trilineatus Angel, 1939 -- valid -- Three-lined Girdled Lizard
  Zonosaurus tsingy Raselimanana, Raxworthy and Nussbaum, 2000 -- valid
  Zootoca vivipara (Lichtenstein, 1823) -- valid -- Viviparous Lizard, European Common Lizard
  Zootoca vivipara carniolica (Mayer, Böhme, Tiedemann and Bischoff, 2000) -- valid
  Zootoca vivipara louislantzi Arribas, 2009 -- valid
  Zootoca vivipara pannonica (Lac and Kluch, 1968) -- valid
  Zootoca vivipara vivipara (Lichtenstein, 1823) -- valid
  Zygaspis ferox Broadley and Broadley, 1997 -- valid
  Zygaspis kafuensis Broadley and Broadley, 1997 -- valid
  Zygaspis nigra Broadley and Gans, 1969 -- valid
  Zygaspis quadrifrons (Peters, 1862) -- valid -- Kalahari Dwarf Worm Lizard, Kalahari Round-snouted Worm Lizard
  Zygaspis quadrifrons capensis (Thominot, 1887) -- invalid
  Zygaspis vandami (Fitzsimons, 1930) -- valid -- Van Dam's Dwarf Worm Lizard
  Zygaspis vandami arenicola Broadley and Broadley, 1997 -- valid -- Sand-dwelling Dwarf Worm Lizard
  Zygaspis vandami vandami (Fitzsimons, 1930) -- valid -- Van Dam's Dwarf Worm Lizard
  Zygaspis violacea (Peters, 1854) -- valid
   

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