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Publication: Williams, Austin B., Lawrence G. Abele, D. L. Felder, H. H. Hobbs, Jr., R. B. Manning, et al. 1989. Common and Scientific Names of Aquatic Invertebrates from the United States and Canada: Decapod Crustaceans. American Fisheries Society Special Publication 17. 77.

ITIS records citing this publication
 
 Kingdom Animalia
  Acanthacaris caeca (A. Milne-Edwards, 1881) -- valid -- Atlantic deepsea lobster
  Acanthephyra acanthitelsonis Bate, 1888 -- valid
  Acanthephyra acutifrons Bate, 1888 -- valid
  Acanthephyra armata A. Milne-Edwards, 1881 -- valid
  Acanthephyra brevirostris S. I. Smith, 1885 -- valid
  Acanthephyra chacei Krygier and Forss, 1981 -- valid
  Acanthephyra curtirostris Wood-Mason, 1891 -- valid -- peaked shrimp
  Acanthephyra eximia S. I. Smith, 1884 -- valid
  Acanthephyra pelagica (Risso, 1816) -- valid
  Acanthephyra purpurea A. Milne-Edwards, 1881 -- valid
  Acanthephyra stylorostratis (Bate, 1888) -- valid
  Acanthocarpus alexandri Stimpson, 1871 -- valid -- gladiator box crab
  Acanthocarpus bispinosus A. Milne-Edwards, 1880 -- valid -- twospine box crab
  Acantholithodes hispidus (Stimpson, 1860) -- valid -- spiny lithode crab
  Acanthonyx petiverii H. Milne Edwards, 1834 -- valid -- jacknife spider crab
  Actaea acantha (H. Milne Edwards, 1834) -- valid -- spinose rubble crab
  Actaea bifrons M. J. Rathbun, 1898 -- valid -- areolate rubble crab
  Aepinus septemspinosus (A. Milne-Edwards, 1879) -- valid
  Agaricochirus acanthinus McLaughlin, 1982 -- valid
  Agaricochirus alexandri (A. Milne-Edwards and Bouvier, 1893) -- valid
  Agaricochirus boletifer (A. Milne-Edwards and Bouvier, 1893) -- valid
  Agaricochirus gibbosimanus (A. Milne-Edwards, 1880) -- valid
  Albunea Weber, 1795 -- valid
  Albunea gibbesii Stimpson, 1859 -- valid -- surf mole crab
  Albunea paretii Guérin-Méneville, 1853 -- valid -- beach mole crab
  Allactaea lithostrota A. B. Williams, 1974 -- valid
  Alpheopsis equidactylus (Lockington, 1877) -- valid
  Alpheopsis harperi Wicksten, 1984 -- valid
  Alpheopsis labis Chace, 1972 -- valid -- tongclaw snapping shrimp
  Alpheopsis trispinosa (Stimpson, 1860) -- invalid
  Alpheus amblyonyx Chace, 1972 -- valid -- bluntclaw snapping shrimp
  Alpheus armatus M. J. Rathbun, 1901 -- valid -- brown snapping shrimp
  Alpheus armillatus H. Milne Edwards, 1837 -- valid -- banded snapping shrimp
  Alpheus bahamensis Rankin, 1898 -- valid
  Alpheus barbara Lockington, 1878 -- valid
  Alpheus beanii Verrill, 1922 -- valid
  Alpheus belli Coutière, 1898 -- valid
  Alpheus bellimanus Lockington, 1877 -- valid -- olive snapping shrimp
  Alpheus bouvieri A. Milne-Edwards, 1878 -- valid
  Alpheus californiensis Holmes, 1900 -- valid -- mudflat snapping shrimp
  Alpheus candei Guérin-Méneville, 1855 -- valid
  Alpheus clamator Lockington, 1877 -- valid -- twistclaw pistol shrimp
  Alpheus cristulifrons M. J. Rathbun, 1900 -- valid -- dotted snapping shrimp
  Alpheus cylindricus Kingsley, 1878 -- valid -- cylindrial snapping shrimp, cylindrical snapping shrimp
  Alpheus estuariensis Christoffersen, 1984 -- valid -- estuarine snapping shrimp
  Alpheus floridanus Kingsley, 1878 -- valid -- sand snapping shrimp
  Alpheus formosus Gibbes, 1850 -- valid -- striped snapping shrimp
  Alpheus heterochaelis Say, 1818 -- valid -- bigclaw snapping shrimp
  Alpheus normanni Kingsley, 1878 -- valid -- green snapping shrimp
  Alpheus nuttingi (Schmitt, 1924) -- valid
  Alpheus paracrinitus Miers, 1881 -- valid -- smoothclaw snapping shrimp
  Alpheus peasei (Armstrong, 1940) -- valid -- orangetail snapping shrimp
  Alpheus schmitti Chace, 1972 -- valid
  Alpheus thomasi Hendrix and Gore, 1973 -- valid
  Alpheus viridari (Armstrong, 1949) -- valid
  Alpheus websteri Kingsley, 1880 -- valid
  Ambidexter panamensis Abele, 1972 -- valid
  Ambidexter symmetricus Manning and Chace, 1971 -- valid
  Anasimus latus M. J. Rathbun, 1894 -- valid -- stilt spider crab
  Anchistioides antiguensis (Schmitt, 1924) -- valid
  Anisopagurus McLaughlin, 1981 -- valid
  Anisopagurus bartletti (A. Milne-Edwards, 1880) -- valid
  Anisopagurus pygmaeus (Bouvier, 1918) -- valid
  Anomalothir furcillatus (Stimpson, 1871) -- valid
  Arachnopsis filipes Stimpson, 1871 -- valid
  Aratus pisonii (H. Milne Edwards, 1837) -- valid -- mangrove tree crab
  Arenaeus cribrarius (Lamarck, 1818) -- valid -- speckled swimming crab
  Argis alaskensis (Kingsley, 1882) -- valid -- Alaska argid
  Argis californiensis (M. J. Rathbun, 1902) -- valid -- slope argid
  Argis crassa (M. J. Rathbun, 1899) -- valid -- rough argid
  Argis dentata (M. J. Rathbun, 1902) -- valid -- Arctic argid, Artic argid
  Argis lar (Owen, 1839) -- valid -- kuro shrimp
  Argis levior (M. J. Rathbun, 1902) -- valid -- Nelson argid
  Argis ovifer (M. J. Rathbun, 1902) -- valid -- spliteye argid
  Aristaeomorpha foliacea (Risso, 1827) -- valid -- ammiru cani, ammiru turcu, chorizo, crevette rouge, gamba española, gamba roja, gambaru de fundu, gambero rosso, gambon rouge, giant gamba prawn, giant red shrimp, grande crevette rouge, langostino moruño, langostino rojo, red royal prawn, u patri di ammiru
  Aristeidae Wood-Mason, 1891 -- valid -- gamba prawns, gamba shrimps
  Aristeus antillensis A. Milne-Edwards and Bouvier, 1909 -- valid -- purplehead gamba prawn
  Astacidae Latreille, 1802 -- valid -- crayfishes
  Atelecyclidae Ortmann, 1893 -- valid -- horse crabs
  Atyidae de Haan, 1849 -- valid -- basket shrimp
  Automate dolichognatha De Man, 1888 -- valid
  Automate evermanni M. J. Rathbun, 1901 -- valid
  Automate gardineri Coutiere, 1902 -- valid
  Automate rectifrons Chace, 1972 -- valid
  Axiopsis hirsutimana (Boesch and Smalley, 1972) -- invalid
  Axiopsis jenneri (A. B. Williams, 1974) -- invalid
  Axiopsis oxypleura (A. B. Williams, 1974) -- invalid
  Axiopsis spinulicauda (M. J. Rathbun, 1902) -- invalid
  Axius agassizi (Bouvier, 1905) -- invalid
  Axius armatus S. I. Smith, 1881 -- valid
  Axius borradailei (Bouvier, 1905) -- invalid
  Axius communis (Bouvier, 1905) -- invalid
  Axius rotundifrons (Bouvier, 1905) -- invalid
  Axius serratus Stimpson, 1852 -- valid
  Banareia palmeri (M. J. Rathbun, 1894) -- valid -- hoary rubble crab
  Barbicambarus cornutus (Faxon, 1884) -- valid -- bottle brush crayfish, bottlebrush crayfish
  Bathynectes longispina Stimpson, 1871 -- valid -- bathyal swimming crab
  Bathypalaemonella serratipalma L. H. Pequegnat, 1970 -- valid
  Bathypalaemonella texana L. H. Pequegnat, 1970 -- valid
  Bathyplax typhla A. Milne-Edwards, 1880 -- invalid -- rigid bathyal crab
  Batrachonotus fragosus Stimpson, 1871 -- valid
  Bentheogennema borealis (M. J. Rathbun, 1902) -- valid -- northern blunt-tail shrimp
  Bentheogennema burkenroadi Krygier and Wasmer, 1975 -- valid -- Burkenroad blunt-tail shrimp
  Benthesicymidae Wood-Mason, 1891 -- valid -- benthesicymid shrimps
  Benthochascon schmitti M. J. Rathbun, 1931 -- invalid -- sharp-oar swimming crab
  Betaeus ensenadensis Glassell, 1938 -- valid -- mudflat visored shrimp
  Betaeus gracilis J. F. L. Hart, 1964 -- valid -- kelp visored shrimp
  Betaeus harfordi (Kingsley, 1878) -- valid -- abalone visored shrimp
  Betaeus harrimani M. J. Rathbun, 1904 -- valid -- Northern hooded shrimp
  Betaeus longidactylus Lockington, 1877 -- valid -- visored shrimp
  Betaeus macginitieae J. F. L. Hart, 1964 -- valid -- urchin visored shrimp
  Betaeus setosus J. F. L. Hart, 1964 -- valid -- fuzzy hooded shrimp
  Blepharipoda occidentalis J. W. Randall, 1840 -- valid -- spiny mole crab
  Bouchardina robisoni Hobbs, 1977 -- valid
  Brachycarpus biunguiculatus (Lucas, 1846) -- valid -- twoclaw shrimp
  Bythocaris gracilis S. I. Smith, 1885 -- valid
  Bythocaris leucopis G. O. Sars, 1879 -- valid
  Bythocaris nana S. I. Smith, 1885 -- valid
  Bythocaris payeri (C. Heller, 1875) -- valid
  Bythocaris simplicirostris G. O. Sars, 1870 -- valid
  Calappa angusta A. Milne-Edwards, 1880 -- invalid -- nodose box crab
  Calappa flammea (J. F. W. Herbst, 1794) -- valid -- flame box crab
  Calappa gallus (J. F. W. Herbst, 1803) -- valid -- rough box crab, yellow box crab
  Calappa ocellata Holthuis, 1958 -- valid -- ocellate box crab
  Calappa sulcata M. J. Rathbun, 1898 -- valid -- yellow box crab
  Calappa tortugae M. J. Rathbun, 1933 -- valid -- nodose box crab
  Calappidae Milne Edwards, 1837 -- valid -- box crabs
  Calastacus investigatoris Anderson, 1896 -- invalid
  Calastacus quinqueseriatus M. J. Rathbun, 1902 -- invalid
  Calastacus stilirostris Faxon, 1893 -- valid
  Calcinus tibicen (J. F. W. Herbst, 1791) -- valid -- orangeclaw hermit
  Callianassa affinis Holmes, 1900 -- invalid -- tidepool ghost shrimp
  Callianassa atlantica Rathbun, 1926 -- invalid
  Callianassa biformis Biffar, 1971 -- invalid -- biform ghost shrimp
  Callianassa branneri (Rathbun, 1900) -- invalid -- bighand ghost shrimp
  Callianassa californiensis Dana, 1854 -- invalid -- bay ghost shrimp
  Callianassa fragilis Biffar, 1970 -- invalid -- fragile ghost shrimp
  Callianassa gigas Dana, 1852 -- invalid -- giant ghost shrimp
  Callianassa goniophthalma M. J. Rathbun, 1902 -- invalid -- slope ghost shrimp, slope giant ghost
  Callianassa guassutinga Rodrigues, 1971 -- invalid
  Callianassa jamaicensis Schmitt, 1935 -- invalid -- estuarine ghost shrimp
  Callianassa louisianensis (Schmitt, 1935) -- invalid
  Callianassa marginata M. J. Rathbun, 1901 -- invalid
  Callianassa rathbunae Schmitt, 1935 -- invalid
  Callianassa trilobata Biffar, 1970 -- invalid
  Calliax quadracuta (Biffar, 1970) -- invalid
  Callichirus islagrande (Schmitt, 1935) -- valid -- beach ghost shrimp
  Callichirus major (Say, 1818) -- valid -- Carolinian ghost shrimp
  Callidactylus asper Stimpson, 1871 -- valid -- spurfinger purse crab
  Callinectes arcuatus Ordway, 1863 -- valid -- arched swimming crab
  Callinectes bellicosus (Stimpson, 1859) -- valid -- Cortez swimming crab, Crabe nageur soldat, Jaiba guerrera, warrior swimming crab
  Callinectes bocourti A. Milne-Edwards, 1879 -- valid -- Bocourt swimming crab
  Callinectes danae S. I. Smith, 1869 -- valid -- Dana swimming crab
  Callinectes exasperatus (Gerstaecker, 1856) -- valid -- rugose swimming crab
  Callinectes larvatus Ordway, 1863 -- valid -- masked swimming crab
  Callinectes ornatus Ordway, 1863 -- valid -- shelligs
  Callinectes rathbunae Contreras, 1930 -- valid -- sharptooth swimming crab, sharptoothed swimming crab
  Callinectes sapidus M. J. Rathbun, 1896 -- valid -- blue crab, bluepoint
  Callinectes similis A. B. Williams, 1966 -- valid -- lesser blue crab
  Calocaris templemani Squires, 1965 -- valid
  Cambarellus blacki Hobbs, 1980 -- valid -- cypress crayfish
  Cambarellus diminutus Hobbs, 1945 -- valid -- least caryfish, least crayfish
  Cambarellus lesliei Fitzpatrick and Laning, 1976 -- valid
  Cambarellus ninae Hobbs, 1950 -- valid
  Cambarellus puer Hobbs, 1945 -- valid -- swamp dwarf crayfish
  Cambarellus schmitti Hobbs, 1942 -- valid
  Cambarellus shufeldtii (Faxon, 1884) -- valid -- Cajun dwarf crayfish
  Cambarellus texanus Albaugh and Black, 1973 -- valid
  Cambaridae Hobbs, 1942 -- valid -- crayfishes
  Cambarus acanthura Hobbs, 1981 -- valid
  Cambarus acuminatus Faxon, 1884 -- valid
  Cambarus asperimanus Faxon, 1914 -- valid
  Cambarus bartonii (Fabricius, 1798) -- valid -- Appalachian brook crayfish
  Cambarus batchi Schuster, 1973 -- valid -- bluegrass crayfish
  Cambarus bouchardi Hobbs, 1970 -- valid -- Big South Fork crayfish
  Cambarus brachydactylus Hobbs, 1953 -- valid
  Cambarus buntingi R. W. Bouchard, 1973 -- valid -- Bunting crayfish
  Cambarus carolinus (Erichson, 1846) -- valid
  Cambarus catagius Hobbs and Perkins, 1967 -- valid -- Greensboro burrowing crayfish
  Cambarus causeyi Reimer, 1966 -- valid
  Cambarus chasmodactylus James, 1966 -- valid -- New River crayfish
  Cambarus chaugaensis Prins and Hobbs, 1972 -- valid -- Chauga crayfish
  Cambarus conasaugaensis Hobbs and Hobbs III, 1962 -- valid
  Cambarus coosae Hobbs, 1981 -- valid
  Cambarus coosawattae Hobbs, 1981 -- valid -- Coosawattae crayfish
  Cambarus cracens R. W. Bouchard and Hobbs, 1976 -- valid
  Cambarus crinipes R. W. Bouchard, 1973 -- valid
  Cambarus cryptodytes Hobbs, 1941 -- valid -- Dougherty Plain cave crayfish
  Cambarus cumberlandensis Hobbs and R. W. Bouchard, 1973 -- valid -- Cumberland crayfish
  Cambarus cymatilis Hobbs, 1970 -- valid
  Cambarus deweesae R. W. Bouchard and Etnier, 1979 -- valid -- valley flame crayfish
  Cambarus diogenes Girard, 1852 -- valid -- devil crawfish, devil crayfish
  Cambarus distans Rhoades, 1944 -- valid -- boxclaw crawfish
  Cambarus dubius Faxon, 1884 -- valid -- upland burrowing crayfish
  Cambarus englishi Hobbs and Hall, 1972 -- valid
  Cambarus extraneus Hagen, 1870 -- valid -- Chickamauga crayfish
  Cambarus fasciatus Hobbs, 1981 -- valid -- Etowah crayfish
  Cambarus friaufi Hobbs, 1953 -- valid -- hairy crayfish
  Cambarus gentryi Hobbs, 1970 -- valid
  Cambarus georgiae Hobbs, 1981 -- valid -- Little Tennessee crayfish
  Cambarus girardianus Faxon, 1884 -- valid
  Cambarus graysoni Faxon, 1914 -- valid -- two-spot crayfish
  Cambarus halli Hobbs, 1968 -- valid
  Cambarus hamulatus (Cope, 1881) -- valid
  Cambarus harti Hobbs, 1981 -- valid -- piedmont blue burrower
  Cambarus hiwasseensis Hobbs, 1981 -- valid -- Hiwassee crayfish
  Cambarus howardi Hobbs and Hall, 1969 -- valid -- Chattahoochee crayfish
  Cambarus hubbsi Creaser, 1931 -- valid
  Cambarus hubrichti Hobbs, 1952 -- valid -- Salem cave crayfish
  Cambarus jonesi Hobbs and Barr, 1960 -- valid -- Alabama cave crayfish
  Cambarus laevis Faxon, 1914 -- invalid
  Cambarus latimanus (Le Conte, 1856) -- valid
  Cambarus longirostris Faxon, 1885 -- valid
  Cambarus longulus Girard, 1852 -- valid
  Cambarus manningi Hobbs, 1981 -- valid
  Cambarus miltus Fitzpatrick, 1978 -- valid -- rusty grave digger
  Cambarus monongalensis Ortmann, 1905 -- valid
  Cambarus nerterius Hobbs, 1964 -- valid -- Greenbrier cave crayfish
  Cambarus nodosus R. W. Bouchard and Hobbs, 1976 -- valid
  Cambarus obeyensis Hobbs and Shoup, 1947 -- valid -- Obey crayfish
  Cambarus obstipus Hall, 1959 -- valid
  Cambarus ornatus Rhoades, 1944 -- valid
  Cambarus ortmanni Williamson, 1907 -- valid -- Ortmann mudbug
  Cambarus parrishi Hobbs, 1981 -- valid -- Hiwassee headwater crayfish
  Cambarus parvoculus Hobbs and Shoup, 1947 -- valid -- mountain midget crayfish
  Cambarus pristinus Hobbs, 1965 -- valid -- pristine crayfish
  Cambarus pyronotus R. W. Bouchard, 1978 -- valid -- fireback crayfish
  Cambarus reburrus Prins, 1968 -- valid -- French Broad crayfish
  Cambarus reduncus Hobbs, 1956 -- valid
  Cambarus reflexus Hobbs, 1981 -- valid
  Cambarus robustus Girard, 1852 -- valid -- big water crayfish
  Cambarus rusticiformis Rhoades, 1944 -- valid -- Depression crayfish
  Cambarus sciotensis Rhoades, 1944 -- valid -- Teays River crayfish
  Cambarus scotti Hobbs, 1981 -- valid -- Chatooga crayfish
  Cambarus setosus Faxon, 1889 -- valid -- bristly cave crayfish
  Cambarus speciosus Hobbs, 1981 -- valid
  Cambarus sphenoides Hobbs, 1968 -- valid
  Cambarus spicatus Hobbs, 1956 -- valid
  Cambarus striatus Hay, 1902 -- valid -- Hay crayfish
  Cambarus strigosus Hobbs, 1981 -- valid
  Cambarus tartarus Hobbs and M. R. Cooper, 1972 -- valid -- Oklahoma cave crayfish
  Cambarus tenebrosus Hay, 1902 -- valid -- cavespring crayfish
  Cambarus truncatus Hobbs, 1981 -- valid -- Oconee burrowing crayfish
  Cambarus unestami Hobbs and Hall, 1969 -- valid
  Cambarus veteranus Faxon, 1914 -- valid -- Big Sandy crayfish
  Cambarus zophonastes Hobbs and Bedinger, 1964 -- valid -- cave crayfish, Hell Creek cave crayfish
  Cancellus H. Milne-Edwards, 1836 -- valid
  Cancellus ornatus J. E. Benedict, 1901 -- valid
  Cancellus viridis Mayo, 1973 -- valid
  Cancer amphioetus M. J. Rathbun, 1898 -- valid -- bigtooth rock crab
  Cancer antennarius Stimpson, 1856 -- valid -- Pacific rock crab
  Cancer anthonyi M. J. Rathbun, 1897 -- valid -- yellow crab, yellow rock crab
  Cancer borealis Stimpson, 1859 -- valid -- Jonah crab
  Cancer branneri M. J. Rathbun, 1926 -- valid -- furrowed rock crab
  Cancer gracilis Dana, 1852 -- valid -- graceful crab, graceful rock crab
  Cancer irroratus Say, 1817 -- valid -- Atlantic rock crab
  Cancer jordani M. J. Rathbun, 1900 -- valid -- hairy rock crab
  Cancer magister Dana, 1852 -- valid -- Dungeness crab
  Cancer oregonensis (Dana, 1852) -- valid -- pygmy rock crab
  Cancer productus J. W. Randall, 1840 -- valid -- red rock crab
  Cancridae Latreille, 1802 -- valid -- rock crabs
  Carcinus maenas (Linnaeus, 1758) -- valid -- green crab
  Cardisoma guanhumi Latreille, 1828 -- valid -- blue land crab
  Caridion gordoni (Bate, 1858) -- valid -- bigclaw hippolyte
  Carpilius corallinus (J. F. W. Herbst, 1783) -- valid -- batwing coral crab, queen crab
  Carpoporus papulosus Stimpson, 1871 -- valid -- narrowfront rubble crab
  Cataleptodius floridanus (Gibbes, 1850) -- valid -- spoonfinger rubble crab
  Cataleptodius parvulus (J. C. Fabricius, 1793) -- valid
  Catapaguroides microps A. Milne-Edwards and Bouvier, 1893 -- valid
  Catapagurus gracilis (S. I. Smith, 1881) -- valid
  Catapagurus sharreri A. Milne-Edwards, 1880 -- valid
  Chacellus filiformis Guinot, 1969 -- valid -- browed bathyal crab
  Chasmocarcinus chacei Felder and Rabalais, 1986 -- valid
  Chasmocarcinus cylindricus M. J. Rathbun, 1901 -- valid -- smoothwrist soft crab
  Chasmocarcinus mississippiensis M. J. Rathbun, 1931 -- valid -- roughwrist soft crab
  Chionoecetes angulatus M. J. Rathbun, 1924 -- valid -- triangle Tanner crab
  Chionoecetes bairdi M. J. Rathbun, 1924 -- valid -- southern Tanner crab, Tanner crab
  Chionoecetes opilio (J. C. Fabricius, 1788) -- valid -- snow crab
  Chionoecetes opilio opilio (O. Fabricius, 1788) -- valid
  Chionoecetes tanneri M. J. Rathbun, 1893 -- valid -- grooved Tanner crab
  Chirostylus perarmatus Haig, 1968 -- invalid
  Chlorilia Dana, 1851 -- invalid
  Chlorilia longipes Dana, 1851 -- invalid -- longhorn decorator crab
  Chlorodiella longimana (H. Milne Edwards, 1834) -- valid -- longhand rubble crab
  Chorinus heros (J. F. W. Herbst, 1790) -- valid -- shorthorn decorator crab
  Clibanarius Dana, 1852 -- valid
  Clibanarius antillensis Stimpson, 1862 -- valid
  Clibanarius cubensis (de Saussure, 1858) -- valid -- widestripe hermit
  Clibanarius tricolor (Gibbes, 1850) -- valid -- tricolor hermit
  Clibanarius vittatus (Bosc, 1802) -- valid -- thinstripe hermit
  Clythrocerus decorus M. J. Rathbun, 1933 -- invalid
  Clythrocerus granulatus (M. J. Rathbun, 1898) -- valid
  Clythrocerus nitidus (A. Milne-Edwards, 1880) -- valid
  Clythrocerus perpusillus M. J. Rathbun, 1901 -- invalid
  Clythrocerus planus M. J. Rathbun, 1900 -- invalid -- chip crab
  Clythrocerus stimpsoni M. J. Rathbun, 1937 -- invalid
  Coelocerus spinosus A. Milne-Edwards, 1875 -- valid -- channelnose spider crab
  Coenobita clypeatus (J. C. Fabricius, 1787) -- valid -- land hermit
  Coenobitidae Dana, 1851 -- valid -- land hermit crabs
  Collodes leptocheles M. J. Rathbun, 1894 -- valid
  Collodes nudus Stimpson, 1871 -- valid
  Collodes obesus A. Milne-Edwards, 1878 -- valid
  Collodes robustus S. I. Smith, 1881 -- valid
  Collodes trispinosus Stimpson, 1871 -- valid
  Coralaxius abelei Kensley and Gore, 1981 -- invalid
  Corallianassa longiventris (A. Milne-Edwards, 1870) -- valid
  Crangon alba Holmes, 1900 -- valid -- stout crangon
  Crangon communis Rathbun, 1899 -- invalid -- twospine crangon
  Crangon dalli M. J. Rathbun, 1902 -- valid -- ridged crangon
  Crangon franciscorum Stimpson, 1856 -- valid -- California bay shrimp, California shrimp
  Crangon handi Kuris and Carlton, 1977 -- valid
  Crangon holmesi M. J. Rathbun, 1902 -- valid -- Holmes bay shrimp
  Crangon nigricauda Stimpson, 1856 -- valid -- blacktail bay shrimp, blacktailed shrimp
  Crangon nigromaculata Lockington, 1877 -- valid -- bay shrimp, blackspotted bay shrimp
  Crangon septemspinosa Say, 1818 -- valid -- sand shrimp, sevenspine bay shrimp
  Cronius ruber (Lamarck, 1818) -- valid -- blackpoint sculling crab
  Cronius tumidulus (Stimpson, 1871) -- valid -- crevice sculling crab
  Cryptochiridae Paulson, 1875 -- valid -- gall crabs
  Cryptolithodes sitchensis Brandt, 1853 -- valid -- umbrella crab
  Cryptolithodes typicus Brandt, 1848 -- valid -- butterfly crab
  Cryptopodia concava Stimpson, 1871 -- invalid
  Ctenocheles leviceps Rabalais, 1979 -- valid
  Cyclodorippe antennaria A. Milne-Edwards, 1880 -- valid
  Cycloes bairdii Stimpson, 1860 -- invalid -- shameface heart crab
  Cyclograpsus integer H. Milne Edwards, 1837 -- valid -- globose shore crab
  Cycloxanthops novemdentatus (Lockington, 1876) -- valid -- ninetooth pebble crab
  Cymonomus quadratus A. Milne-Edwards, 1880 -- valid
  Cymopolus agassizi A. Milne-Edwards and Bouvier, 1899 -- invalid
  Dardanus Paulson, 1875 -- valid
  Dardanus fucosus Biffar and Provenzano, 1972 -- valid -- bareye hermit
  Dardanus insignis (de Saussure, 1858) -- valid -- red brocade hermit
  Dardanus venosus (H. Milne Edwards, 1848) -- valid -- stareye hermit
  Dermaturus mandtii Brandt, 1850 -- valid -- wrinkled crab
  Dichelopandalus leptocerus (S. I. Smith, 1881) -- valid -- bristled longbeak
  Dicranodromia ovata A. Milne-Edwards, 1880 -- valid
  Discias atlanticus Gurney, 1939 -- valid
  Discias serratirostris Lebour, 1949 -- valid
  Discias vernbergi Boothe and Heard, 1987 -- valid
  Discorsopagurus schmitti (Stevens, 1925) -- valid -- tubeworm hermit
  Dissodactylus alcocki M. J. Rathbun, 1918 -- invalid
  Dissodactylus borradailei M. J. Rathbun, 1918 -- valid
  Dissodactylus crinitichelis Moreira, 1901 -- valid -- seabiscuit pea crab
  Dissodactylus mellitae (M. J. Rathbun, 1900) -- valid -- sand-dollar pea crab
  Dissodactylus primitivus Bouvier, 1917 -- valid
  Dissodactylus rugatus Bouvier, 1917 -- invalid
  Dissodactylus stebbingi M. J. Rathbun, 1918 -- invalid
  Distocambarus carlsoni Hobbs, 1983 -- valid -- mimic crayfish
  Distocambarus crockeri Hobbs and Carlson, 1983 -- valid
  Distocambarus devexus (Hobbs, 1981) -- valid
  Distocambarus yongineri Hobbs and Carlson, 1985 -- invalid -- Newberry burrowing crayfish
  Domecia acanthophora (Schramm, 1867) -- valid -- elkhorn coral crab
  Dorhynchus thomsoni Thomson, 1873 -- valid
  Dorippidae MacLeay, 1838 -- valid -- sumo crabs
  Dromia erythropus (George Edwards, 1771) -- valid -- redeye sponge crab
  Dromidia antillensis Stimpson, 1858 -- invalid -- decorator crab, hairy sponge crab
  Dromidia larraburei M. J. Rathbun, 1910 -- invalid
  Dromiidae De Haan, 1833 -- valid -- sponge crabs
  Dyspanopeus sayi (S. I. Smith, 1869) -- valid -- Say mud crab
  Dyspanopeus texana (Stimpson, 1859) -- invalid -- gulf grassflat crab
  Ebalia cariosa (Stimpson, 1860) -- valid -- sculptured clutch crab
  Ebalia stimpsonii A. Milne-Edwards, 1880 -- valid -- thinarm clutch crab
  Elassochirus cavimanus (Miers, 1879) -- valid -- purple hermit
  Elassochirus gilli (J. E. Benedict, 1892) -- valid -- Pacific red hermit
  Elassochirus tenuimanus (Dana, 1851) -- valid -- wideband hermit, widehand hermit
  Emerita Scopoli, 1777 -- valid
  Emerita analoga (Stimpson, 1857) -- valid -- Pacific sand crab
  Emerita benedicti Schmitt, 1935 -- valid -- Benedict sand crab
  Emerita portoricensis Schmitt, 1935 -- valid -- Puerto Rican sand crab
  Emerita talpoida (Say, 1817) -- valid -- Atlantic sand crab
  Enallopaguropsis guatemoci (Glassell, 1937) -- valid
  Enoplometopus antillensis (Lütken, 1865) -- valid -- flaming reef lobster
  Ephyrina benedicti S. I. Smith, 1885 -- valid
  Ephyrina bifida Stephensen, 1923 -- valid
  Ephyrina figueirai Crosnier and Forest, 1973 -- valid
  Ephyrina ombango Crosnier and Forest, 1973 -- valid
  Epialtoides hiltoni (M. J. Rathbun, 1923) -- valid -- winged kelp crab
  Epialtus bituberculatus H. Milne Edwards, 1834 -- valid -- variegate spider crab
  Epialtus dilatatus A. Milne-Edwards, 1878 -- valid -- winged mime crab
  Epialtus kingsleyi M. J. Rathbun, 1923 -- valid
  Epialtus longirostris Stimpson, 1860 -- valid
  Erileptus spinosus M. J. Rathbun, 1893 -- valid
  Erimacrus isenbeckii (Brandt, 1848) -- valid -- hair crab
  Eriocheir sinensis H. Milne Edwards, 1853 -- valid -- Chinese mitten crab
  Eriphia gonagra (J. C. Fabricius, 1781) -- valid -- redfinger rubble crab, warty crab
  Ethusa mascarone americana A. Milne-Edwards, 1880 -- invalid -- stalkeye sumo crab
  Ethusa microphthalma S. I. Smith, 1881 -- valid -- broadback sumo crab
  Ethusa tenuipes M. J. Rathbun, 1897 -- valid -- spiketoe sumo crab
  Ethusa truncata A. Milne-Edwards and Bouvier, 1899 -- valid -- truncate sumo crab
  Ethusina abyssicola S. I. Smith, 1884 -- valid -- abyssal sumo crab
  Etisus maculatus (Stimpson, 1860) -- valid -- blackfinger rubble crab
  Eualus avinus (M. J. Rathbun, 1899) -- valid -- beaked eualid
  Eualus barbatus (M. J. Rathbun, 1899) -- valid -- barbed eualid
  Eualus berkeleyorum Butler, 1971 -- valid -- Berkeley eualid
  Eualus biunguis (M. J. Rathbun, 1902) -- valid -- deepsea eualid
  Eualus fabricii (Krøyer, 1841) -- valid -- Arctic eualid, Artic eualid
  Eualus gaimardii (H. Milne Edwards, 1837) -- valid -- circumpolar eualid
  Eualus herdmani (Walker, 1898) -- valid -- Herdman eualid
  Eualus lineatus Wicksten and Butler, 1983 -- valid -- striped eualid
  Eualus macilentus (Krøyer, 1841) -- valid -- Greenland shrimp
  Eualus macropthalmus (M. J. Rathbun, 1902) -- valid -- bigeye eualid
  Eualus pusiolus (Krøyer, 1841) -- valid -- doll eualid
  Eualus stoneyi (Rathbun, 1902) -- valid -- comb-beak eualid
  Eualus suckleyi (Stimpson, 1864) -- valid -- shortscale eualid
  Eualus townsendi (M. J. Rathbun, 1902) -- valid -- Townsend eualid
  Euceramus Stimpson, 1860 -- valid
  Euceramus praelongus Stimpson, 1860 -- valid -- olivepit porcelain crab
  Euchirograpsus americanus A. Milne-Edwards, 1880 -- valid -- American talon crab
  Euchirograpsus antillensis Türkay, 1975 -- valid -- Antillean talon crab
  Eucratodes agassizii A. Milne-Edwards, 1880 -- valid -- dirtytooth mud crab
  Eucratopsis crassimanus (Dana, 1852) -- valid -- heavyhand rubble crab
  Eugonatonotus crassus (A. Milne-Edwards, 1881) -- valid
  Eumunida picta S. I. Smith, 1883 -- valid
  Eunephrops manningi Holthuis, 1974 -- valid -- banded lobster
  Euphrosynoplax clausa Guinot, 1969 -- valid -- craggy bathyal crab
  Euprognatha gracilipes A. Milne-Edwards, 1878 -- valid
  Euprognatha rastellifera Stimpson, 1871 -- valid
  Eurypanopeus abbreviatus (Stimpson, 1860) -- valid -- lobate mud crab
  Eurypanopeus depressus (S. I. Smith, 1869) -- valid -- flatback mud crab
  Eurypanopeus dissimilis (J. E. Benedict and M. J. Rathbun, 1891) -- valid -- asymmetric mud crab
  Eurypanopeus hyperconvexus Garth, 1986 -- valid
  Euryplax nitida Stimpson, 1859 -- valid -- glabrous broadface crab
  Eurytium limosum (Say, 1818) -- valid -- broadback mud crab
  Exhippolysmata oplophoroides (Holthuis, 1948) -- valid -- cock shrimp, redleg humpback shrimp
  Fabia byssomiae (Say, 1818) -- valid
  Fabia canfieldi M. J. Rathbun, 1918 -- valid
  Fabia concharum (M. J. Rathbun, 1893) -- valid -- smooth mussel crab
  Fabia subquadrata Dana, 1851 -- valid -- grooved mussel crab
  Fabia tellinae Cobb, 1973 -- valid
  Fallicambarus byersi (Hobbs, 1941) -- valid -- lavender burrowing crayfish
  Fallicambarus caesius Hobbs, 1975 -- valid
  Fallicambarus danielae Hobbs, 1975 -- valid -- speckled burrowing crayfish
  Fallicambarus devastator Hobbs and Whiteman, 1987 -- valid -- Texas prairie crayfish
  Fallicambarus dissitus (Penn, 1955) -- valid
  Fallicambarus fodiens (Cottle, 1863) -- valid -- digger crayfish
  Fallicambarus harpi Hobbs and Robison, 1985 -- valid -- Ouachita burrowing crayfish
  Fallicambarus hedgpethi (Hobbs, 1948) -- valid
  Fallicambarus hortoni Hobbs and Fitzpatrick, 1970 -- valid -- Hatchie burrowing crayfish
  Fallicambarus jeanae Hobbs, 1973 -- valid
  Fallicambarus macneesei (Black, 1967) -- valid
  Fallicambarus orkytes (Penn and Marlow, 1959) -- invalid
  Fallicambarus strawni (Reimer, 1966) -- valid -- saline burrowing crayfish
  Fallicambarus uhleri (Faxon, 1884) -- valid
  Faxonella beyeri (Penn, 1950) -- valid
  Faxonella blairi Hayes and Reimer, 1977 -- valid
  Faxonella clypeata (Hay, 1899) -- valid -- ditch fencing crayfish
  Faxonella creaseri Walls, 1968 -- valid
  Fenneralpheus chacei Felder and Manning, 1986 -- valid
  Frevillea barbata A. Milne-Edwards, 1880 -- valid
  Frevillea hirsuta (Borradaile, 1916) -- valid -- tufted broadface crab
  Galathea Fabricius, 1793 -- valid
  Galathea californiensis (J. E. Benedict, 1902) -- invalid
  Galathea rostrata A. Milne-Edwards, 1880 -- valid
  Gecarcinidae MacLeay, 1838 -- valid -- land crabs
  Gecarcinus lateralis (Freminville, 1835) -- valid -- blackback land crab
  Gecarcinus ruricola (Linnaeus, 1758) -- valid -- purple land crab
  Geograpsus lividus (H. Milne Edwards, 1837) -- valid -- variegate shore crab
  Geryon fenneri Manning and Holthuis, 1984 -- invalid -- golden deepsea crab
  Geryon quinquedens S. I. Smith, 1879 -- invalid -- red deepsea crab
  Geryonidae Colosi, 1923 -- valid -- deepsea crabs
  Glyphocrangon aculeata A. Milne-Edwards, 1881 -- valid
  Glyphocrangon alispina Chace, 1939 -- valid
  Glyphocrangon haematonotus Holthuis, 1971 -- valid
  Glyphocrangon longirostris (S. I. Smith, 1882) -- valid
  Glyphocrangon longleyi Schmitt, 1931 -- valid
  Glyphocrangon nobilis A. Milne-Edwards, 1881 -- valid
  Glyphocrangon sculpta (S. I. Smith, 1882) -- valid
  Glyphocrangon spinicauda A. Milne-Edwards, 1881 -- valid
  Glyphocrangon spinulosa Faxon, 1893 -- valid
  Glyphocrangon vicaria Faxon, 1896 -- valid
  Glyphocrangonidae Smith, 1884 -- valid -- armored shrimp, armored shrimps
  Glyptolithodes cristatipes (Faxon, 1893) -- valid
  Glyptoplax smithii A. Milne-Edwards, 1880 -- valid -- truncate rubble crab
  Glyptoxanthus erosus (Stimpson, 1859) -- valid -- eroded mud crab
  Glypturus acanthochirus Stimpson, 1866 -- valid
  Gnathophylloides mineri Schmitt, 1933 -- valid -- squat urchin shrimp
  Gnathophyllum americanum Guérin-Méneville, 1855 -- valid -- bumblebee shrimp
  Gnathophyllum circellus Manning, 1963 -- valid -- circled shrimp, circled squat shrimp
  Gnathophyllum modestum Hay, 1917 -- valid -- spotted bumblebee shrimp
  Goneplax sigsbei (A. Milne-Edwards, 1880) -- valid -- dentate broadface crab
  Goniopsis cruentata (Latreille, 1802) -- valid -- mangrove root crab
  Gonopanope areolata (M. J. Rathbun, 1898) -- valid -- smooth-hand mud crab
  Gourretia latispina (Dawson, 1967) -- invalid -- broadspine ghost shrimp
  Grapsidae MacLeay, 1838 -- valid -- marsh crabs, shore crabs, talon crabs
  Grapsodius eximius Holmes, 1900 -- valid
  Grapsus grapsus (Linnaeus, 1758) -- valid -- Sally Lightfoot crab
  Haigia diegensis (Scanland and Hopkins, 1969) -- valid
  Hapalogaster cavicauda Stimpson, 1859 -- valid -- furry crab
  Hapalogaster grebnitzkii Schalfeew, 1892 -- valid -- soft crab
  Hapalogaster mertensii Brandt, 1850 -- valid -- hairy crab
  Hemigrapsus nudus (Dana, 1851) -- valid -- purple shore crab
  Hemigrapsus oregonensis (Dana, 1851) -- valid -- yellow shore crab
  Hemus cristulipes A. Milne-Edwards, 1875 -- valid
  Hepatus epheliticus (Linnaeus, 1763) -- valid -- calico box crab, shamefaced crab
  Hepatus pudibundus (J. F. W. Herbst, 1785) -- valid -- flecked box crab
  Heptacarpus brachydactylus (M. J. Rathbun, 1902) -- valid -- island coastal shrimp
  Heptacarpus brevirostris (Dana, 1852) -- valid -- shortspine shrimp, stout coastal shrimp
  Heptacarpus camtschaticus (Stimpson, 1860) -- valid -- Northern coastal shrimp
  Heptacarpus carinatus Holmes, 1900 -- valid -- smalleye coastal shrimp
  Heptacarpus decorus (M. J. Rathbun, 1902) -- valid -- elegant coastal shrimp
  Heptacarpus flexus (M. J. Rathbun, 1902) -- valid -- slenderbeak coastal shrimp
  Heptacarpus franciscanus (Schmitt, 1921) -- valid -- Franciscan coastal shrimp
  Heptacarpus kincaidi (M. J. Rathbun, 1902) -- valid -- Kincaid coastal shrimp
  Heptacarpus littoralis Butler, 1980 -- valid -- bigeye coastal shrimp
  Heptacarpus maxillipes (M. J. Rathbun, 1902) -- valid -- Aleutian coastal shrimp
  Heptacarpus moseri (M. J. Rathbun, 1902) -- valid -- Alaska coastal shrimp
  Heptacarpus palpator (Owen, 1839) -- valid -- intertidal coastal shrimp
  Heptacarpus paludicola Holmes, 1900 -- valid -- California coastal shrimp
  Heptacarpus pictus (Stimpson, 1871) -- valid -- redbanded clear shrimp
  Heptacarpus pugettensis Jensen, 1983 -- valid -- barred shrimp, Puget coastal shrimp
  Heptacarpus sitchensis (Brandt, 1851) -- valid -- Sitka coastal shrimp
  Heptacarpus stimpsoni Holthuis, 1947 -- valid -- Stimpson coastal shrimp
  Heptacarpus stylus (Stimpson, 1864) -- valid -- stiletto coastal shrimp
  Heptacarpus taylori (Stimpson, 1857) -- valid -- Taylor coastal shrimp
  Heptacarpus tenuissimus Holmes, 1900 -- valid -- slender coastal shrimp
  Heptacarpus tridens (M. J. Rathbun, 1902) -- valid -- threespine coastal shrimp
  Herbstia parvifrons J. W. Randall, 1840 -- valid -- crevice spider crab
  Heteractaea ceratopus (Stimpson, 1860) -- valid -- horned mud crab
  Heteractaea lunata (H. Milne Edwards and Lucas, 1843) -- valid -- fuzzy mud crab
  Heterocarpus ensifer A. Milne-Edwards, 1881 -- valid -- armed nylon shrimp
  Heterocarpus oryx A. Milne-Edwards, 1881 -- valid
  Heterocrypta granulata (Gibbes, 1850) -- valid -- smooth elbow crab
  Heterocrypta occidentalis (Dana, 1854) -- valid -- sandflat elbow crab
  Hexapanopeus angustifrons (J. E. Benedict and M. J. Rathbun, 1891) -- valid -- smooth mud crab
  Hexapanopeus caribbaeus (Stimpson, 1871) -- valid
  Hexapanopeus hemphillii (J. E. Benedict and M. J. Rathbun, 1891) -- valid
  Hexapanopeus lobipes (A. Milne-Edwards, 1880) -- valid
  Hexapanopeus paulensis M. J. Rathbun, 1930 -- valid -- knobbed mud crab
  Hexapanopeus quinquedentatus M. J. Rathbun, 1901 -- valid
  Hippa cubensis (Saussure, 1857) -- invalid
  Hippa talpoida Say, 1817 -- invalid
  Hippidae Latreille, 1825 -- valid -- sand crabs
  Hippolyte californiensis Holmes, 1895 -- valid -- California green shrimp
  Hippolyte clarki Chace, 1951 -- valid -- kelp humpback shrimp
  Hippolyte coerulescens (J. C. Fabricius, 1775) -- valid -- cerulean sargassum shrimp
  Hippolyte curacaoensis Schmitt, 1924 -- invalid
  Hippolyte nicholsoni Chace, 1972 -- valid
  Hippolyte pleuracantha (Stimpson, 1871) -- invalid -- false zostera shrimp
  Hippolyte pleuracanthus (Stimpson, 1871) -- valid -- false zostera shrimp
  Hippolyte zostericola (S. I. Smith, 1873) -- valid -- zostera shrimp
  Hobbseus attenuatus Black, 1969 -- valid -- Pearl riverlet crayfish
  Hobbseus cristatus (Hobbs, 1955) -- valid
  Hobbseus orconectoides Fitzpatrick and Payne, 1968 -- valid -- Oktibbeha riverlet crayfish
  Hobbseus petilus Fitzpatrick, 1977 -- valid -- Tombigbee riverlet crayfish
  Hobbseus prominens (Hobbs, 1966) -- valid
  Hobbseus valleculus (Fitzpatrick, 1967) -- valid -- Choctaw riverlet crayfish
  Homarus americanus H. Milne Edwards, 1837 -- valid -- American lobster
  Homola barbata (Fabricius, 1793) -- valid
  Homola vigil A. Milne-Edwards, 1880 -- valid
  Homolidae De Haan, 1839 -- valid -- carrier crabs
  Hyas araneus (Linnaeus, 1758) -- valid -- Atlantic lyre crab
  Hyas coarctatus Leach, 1815 -- valid -- Arctic lyre crab
  Hyas lyratus Dana, 1851 -- valid -- Pacific lyre crab
  Hymenodora acanthitelsonis Wasmer, 1972 -- valid
  Hymenodora frontalis M. J. Rathbun, 1902 -- valid -- Pacific ambereye
  Hymenodora glacialis (Buchholz, 1874) -- valid -- Northern ambereye
  Hymenodora gracilis S. I. Smith, 1886 -- valid
  Hypoconcha arcuata Stimpson, 1858 -- valid -- granulate shellback crab
  Hypoconcha californiensis Bouvier, 1898 -- valid -- California shellback crab
  Hypoconcha parasitica (Linnaeus, 1763) -- valid -- rough shellback crab
  Hypoconcha spinosissima M. J. Rathbun, 1933 -- valid -- spiny shellback crab
  Hypsophrys noar A. B. Williams, 1974 -- invalid
  Iliacantha intermedia Miers, 1886 -- invalid -- granulose purse crab
  Iliacantha liodactylus M. J. Rathbun, 1898 -- valid
  Iliacantha sparsa Stimpson, 1871 -- valid -- shouldered purse crab
  Iliacantha subglobosa Stimpson, 1871 -- valid -- longfinger purse crab
  Inachoides forceps A. Milne-Edwards, 1879 -- valid
  Iridopagurus de Saint Laurent-Dechancé, 1966 -- valid
  Iridopagurus caribbensis (A. Milne-Edwards and Bouvier, 1893) -- valid
  Iridopagurus globulus de Saint Laurent-Dechancé, 1966 -- valid
  Iridopagurus iris (A. Milne-Edwards, 1880) -- valid
  Iridopagurus violaceus de Saint LaurentDechancé, 1966 -- valid
  Isocheles pilosus (Holmes, 1900) -- valid -- moon snail hermit
  Isocheles wurdemanni Stimpson, 1862 -- valid -- surf hermit
  Justitia longimanus (H. Milne Edwards, 1837) -- valid -- West Indian furrow lobster
  Labidochirus splendescens (Owen, 1839) -- valid -- splendid hermit
  Latreillia manningi A. B. Williams, 1982 -- valid -- daddy-longlegs crab
  Latreutes fucorum (J. C. Fabricius, 1798) -- valid -- slender sargassum shrimp
  Latreutes inermis Chace, 1972 -- valid
  Latreutes parvulus (Stimpson, 1866) -- valid -- sargassum shrimp
  Leander paulensis Ortmann, 1897 -- valid -- red-algae shrimp
  Leander tenuicornis (Say, 1818) -- valid -- brown glass shrimp, brown grass shrimp
  Lebbeus brandti (Brazhnikov, 1907) -- valid
  Lebbeus catalepsis Jensen, 1987 -- valid -- cataleptic lebbeid
  Lebbeus grandimana (Brazhnikov, 1907) -- valid -- candy-striped shrimp
  Lebbeus groenlandicus (J. C. Fabricius, 1775) -- valid -- spiny lebbeid
  Lebbeus lagunae (Schmitt, 1921) -- valid -- Laguna lebbeid
  Lebbeus microceros (Krøyer, 1841) -- valid
  Lebbeus polaris (Sabine, 1824) -- valid -- polar lebbeid
  Lebbeus possjeticus Kobyakova, 1967 -- valid -- Possjet lebbeid
  Lebbeus schrencki (Brazhnikov, 1907) -- valid -- Okhotsk lebbeid
  Lebbeus unalaskensis (M. J. Rathbun, 1902) -- valid
  Lebbeus vicinus (M. J. Rathbun, 1902) -- valid -- offshore lebbeid
  Lebbeus washingtonianus (M. J. Rathbun, 1902) -- valid -- slope lebbeid
  Lebbeus zebra (Leim, 1921) -- invalid -- zebra lebbeid
  Leiolambrus nitidus M. J. Rathbun, 1901 -- valid -- white elbow crab
  Lepidopa Stimpson, 1858 -- valid
  Lepidopa benedicti Schmitt, 1935 -- valid
  Lepidopa californica Efford, 1971 -- valid -- California mole crab
  Lepidopa websteri J. E. Benedict, 1903 -- valid
  Leptalpheus forceps A. B. Williams, 1965 -- valid -- forceps shrimp
  Leptochela bermudensis Gurney, 1939 -- valid -- Bermuda comb shrimp
  Leptochela carinata Ortmann, 1893 -- valid -- carinate glass shrimp
  Leptochela papulata Chace, 1976 -- valid -- light glass shrimp
  Leptochela serratorbita Bate, 1888 -- valid -- combclaw shrimp
  Leptopisa setirostris (Stimpson, 1871) -- valid
  Leucosiidae Samouelle, 1819 -- valid -- purse crabs
  Libinia dubia H. Milne Edwards, 1834 -- valid -- longnose spider crab
  Libinia emarginata Leach, 1815 -- valid -- portly spider crab
  Libinia erinacea (A. Milne-Edwards, 1879) -- valid -- seagrass spider crab
  Lipkebe holthuisi Chace, 1969 -- valid -- Wellington shrimp
  Lissocrangon stylirostris (Holmes, 1900) -- valid -- smooth bay shrimp
  Lithadia cadaverosa Stimpson, 1871 -- valid -- carinate clutch crab
  Lithadia granulosa A. Milne-Edwards, 1880 -- valid
  Lithodes Latreille, 1806 -- valid
  Lithodes aequispina Benedict, 1894 -- invalid -- golden king crab
  Lithodes couesi J. E. Benedict, 1895 -- valid -- scarlet king crab
  Lithodes maja (Linnaeus, 1758) -- valid -- Norway king crab
  Lobopilumnus agassizii (Stimpson, 1871) -- valid -- areolated hairy crab
  Lopholithodes foraminatus (Stimpson, 1859) -- valid -- brown box crab
  Lopholithodes mandtii Brandt, 1848 -- valid -- Puget Sound king crab
  Lophomastix diomedeae J. E. Benedict, 1904 -- valid
  Lophopanopeus bellus (Stimpson, 1860) -- valid -- blackclaw crestleg crab
  Lophopanopeus frontalis (M. J. Rathbun, 1893) -- valid -- molarless crestleg crab
  Lophopanopeus leucomanus (Lockington, 1876) -- valid -- knobknee crestleg crab, knobkneed crestleg crab
  Loxorhynchus crispatus Stimpson, 1857 -- valid -- moss crab
  Loxorhynchus grandis Stimpson, 1857 -- valid -- sheep crab
  Lyreidus nitidus (A. Milne-Edwards, 1880) -- invalid -- longleg frog crab
  Lysmata californica (Stimpson, 1866) -- valid -- lined shrimp, red rock shrimp
  Lysmata grabhami (Gordon, 1935) -- valid -- cleaner shrimp, redbacked cleaner shrimp
  Lysmata intermedia (Kingsley, 1878) -- valid
  Lysmata rathbunae Chace, 1970 -- valid -- Rathbun cleaner shrimp
  Lysmata wurdemanni (Gibbes, 1850) -- valid -- peppermint shrimp
  Macrobrachium acanthurus (Wiegmann, 1836) -- valid -- cinnamon river shrimp
  Macrobrachium carcinus (Linnaeus, 1758) -- valid -- bigclaw river shrimp, painted river prawn
  Macrobrachium crenulatum Holthuis, 1950 -- valid
  Macrobrachium faustinum (de Saussure, 1857) -- valid
  Macrobrachium heterochirus (Wiegmann, 1836) -- valid -- cascade river prawn
  Macrobrachium ohione (S. I. Smith, 1874) -- valid -- Ohio River shrimp, Ohio shrimp
  Macrobrachium olfersi (Wiegmann, 1836) -- invalid -- bristled river shrimp
  Macrobrachium olfersii (Wiegmann, 1836) -- valid -- bristled river shrimp, Buchura river prawn
  Macrocoeloma camptocerum (Stimpson, 1871) -- valid -- Florida decorator crab
  Macrocoeloma diplacanthum (Stimpson, 1860) -- valid
  Macrocoeloma eutheca (Stimpson, 1871) -- valid
  Macrocoeloma laevigatum (Stimpson, 1860) -- valid
  Macrocoeloma septemspinosum (Stimpson, 1871) -- valid
  Macrocoeloma subparallelum (Stimpson, 1860) -- valid
  Macrocoeloma trispinosum (Latreille, 1825) -- valid -- spongy decorator crab
  Macrocoeloma trispinosum nodipes (Desbonne, 1867) -- valid
  Majidae Samouelle, 1819 -- valid -- araignées de mer, spider crabs
  Malacoplax californiensis (Lockington, 1877) -- valid -- California burrowing crab
  Manucomplanus McLaughlin, 1981 -- valid
  Manucomplanus corallinus (Benedict, 1892) -- invalid
  Megalobrachium Stimpson, 1858 -- valid
  Megalobrachium poeyi (Guérin-Méneville, 1855) -- valid -- hairyclaw porcelain crab
  Megalobrachium soriatum (Say, 1818) -- valid -- pentagonal porcelain crab
  Melybia thalamita Stimpson, 1871 -- valid -- delicate coral crab
  Meningodora compsa (Chace, 1940) -- valid
  Meningodora marptocheles (Chace, 1940) -- valid
  Meningodora mollis S. I. Smith, 1882 -- valid
  Meningodora vesca (S. I. Smith, 1886) -- valid
  Menippe adina A. B. Williams and Felder, 1986 -- valid -- dormir, Gulf stone crab
  Menippe mercenaria (Say, 1818) -- valid -- Florida stone crab
  Menippe nodifrons Stimpson, 1859 -- valid -- Cuban stone crab
  Merhippolyte americana Holthuis, 1961 -- valid
  Mesocrangon intermedia (Stimpson, 1860) -- valid -- Northern spinyhead
  Mesocrangon munitella (A. O. Walker, 1898) -- valid -- miniature spinyhead
  Mesopenaeus tropicalis (Bouvier, 1905) -- valid -- salmon shrimp
  Mesorhoea sexspinosa Stimpson, 1871 -- valid -- sixspine elbow crab
  Metacrangon acclivis (M. J. Rathbun, 1902) -- valid -- forked spinyhead
  Metacrangon jacqueti (A. Milne-Edwards, 1881) -- valid
  Metacrangon munita (Dana, 1852) -- valid -- coastal spinyhead
  Metacrangon spinirostris (M. J. Rathbun, 1902) -- valid
  Metacrangon spinosissima (M. J. Rathbun, 1902) -- valid -- Southern spinyhead
  Metacrangon variabilis (M. J. Rathbun, 1902) -- valid -- deepsea spinyhead
  Metalpheus rostratipes (Pocock, 1890) -- valid
  Metanephrops binghami (Boone, 1927) -- valid -- Caribbean lobsterette
  Metapenaeopsis goodei (S. I. Smith, 1885) -- valid -- camarón gamuza del Caribe, Caribbean velvet shrimp, crevette chamois caraíbe, velvet shrimp
  Metoporhaphis calcarata (Say, 1818) -- valid -- false arrow crab
  Micropanope areolata M. J. Rathbun, 1898 -- invalid
  Micropanope barbadensis (M. J. Rathbun, 1921) -- invalid -- prickly mud crab
  Micropanope latimanus Stimpson, 1898 -- valid
  Micropanope lobifrons A. Milne-Edwards, 1880 -- valid -- lobefront mud crab
  Micropanope nuttingi (M. J. Rathbun, 1898) -- valid -- beaded mud crab
  Micropanope pusilla A. Milne-Edwards, 1880 -- valid -- puffy mud crab
  Micropanope sculptipes Stimpson, 1871 -- valid -- sculptured mud crab
  Micropanope spinipes A. Milne-Edwards, 1880 -- invalid -- spiny mud crab
  Micropanope urinator (A. Milne-Edwards, 1881) -- valid -- thorny mud crab
  Microphrys antillensis M. J. Rathbun, 1920 -- valid -- lobed decorator crab
  Microphrys bicornuta (Latreille, 1825) -- invalid -- speck-claw decorator crab
  Microphrys bicornutus (Latreille, 1825) -- valid -- speck-claw decorator crab
  Microprosthema semilaeve (von Martens, 1872) -- valid -- crimson coral shrimp, crimson lima shrimp
  Mimulus foliatus Stimpson, 1860 -- valid -- foliate kelp crab
  Mithraculus coryphe (J. F. W. Herbst, 1801) -- valid -- nodose clinging crab
  Mithraculus forceps (A. Milne-Edwards, 1875) -- valid -- red-ridged clinging crab
  Mithrax acuticornis Stimpson, 1870 -- invalid -- sharphorn clinging crab
  Mithrax cinctimanus (Stimpson, 1860) -- invalid -- banded clinging crab
  Mithrax cornutus de Saussure, 1857 -- invalid -- shorthorn clinging crab
  Mithrax coryphe (J. F. W. Herbst, 1801) -- invalid -- nodose clinging crab, shorthorn clinging crab
  Mithrax forceps (A. Milne-Edwards, 1875) -- invalid -- red-ridged clinging crab
  Mithrax hemphilli M. J. Rathbun, 1892 -- valid
  Mithrax hispidus (J. F. W. Herbst, 1790) -- valid -- coral clinging crab, shaggy clinging crab
  Mithrax holderi Stimpson, 1871 -- valid
  Mithrax pilosus M. J. Rathbun, 1892 -- valid
  Mithrax pleuracanthus Stimpson, 1871 -- valid -- shaggy clinging crab
  Mithrax ruber (Stimpson, 1871) -- invalid
  Mithrax sculptus (Lamarck, 1818) -- invalid -- green clinging crab
  Mithrax spinosissimus (Lamarck, 1818) -- valid -- channel clinging crab
  Mithrax tortugae M. J. Rathbun, 1920 -- valid
  Mithrax verrucosus H. Milne Edwards, 1832 -- valid -- paved clinging crab
  Mocosoa crebripunctata Stimpson, 1871 -- valid
  Munida Leach, 1820 -- valid
  Munida iris iris A. Milne-Edwards, 1880 -- valid
  Munida irrasa A. Milne-Edwards, 1880 -- valid
  Munida longipes A. Milne-Edwards, 1880 -- invalid
  Munida pusilla J. E. Benedict, 1902 -- valid
  Munida valida S. I. Smith, 1883 -- valid
  Munidopsis ciliata Wood-Mason, 1891 -- valid
  Mursia gaudichaudii (H. Milne Edwards, 1837) -- invalid -- armed box crab
  Myropsis quinquespinosa Stimpson, 1871 -- valid -- fivespine purse crab
  Nanoplax xanthiformis (A. Milne-Edwards, 1880) -- valid -- rough squareback crab
  Naushonia crangonoides Kingsley, 1897 -- valid
  Nematocarcinus cursor A. Milne-Edwards, 1881 -- valid
  Nematocarcinus ensifer (S. I. Smith, 1882) -- valid
  Nematocarcinus rotundus Crosnier and Forest, 1973 -- valid
  Nematopaguroides fagei Forest and de Saint Laurent, 1968 -- valid
  Nematopaguroides pusillus Forest and de Saint Laurent, 1968 -- valid
  Neocrangon abyssorum (M. J. Rathbun, 1902) -- valid -- abyssal crangon
  Neocrangon alaskensis (Lockington, 1877) -- invalid -- Alaska bay shrimp
  Neocrangon communis (M. J. Rathbun, 1899) -- valid -- gray shrimp, grey shrimp, twospine crangon
  Neocrangon resima (M. J. Rathbun, 1902) -- valid
  Neocrangon zacae (Chace, 1937) -- invalid
  Neolithodes agassizii (S. I. Smith, 1882) -- valid
  Neolithodes grimaldii (A. Milne-Edwards and Bouvier, 1894) -- valid
  Neopanope packardii (Kingsley, 1871) -- valid -- Florida grassflat crab
  Neopanope sayi (S. I. Smith, 1869) -- invalid
  Neopilumnoplax americana (M. J. Rathbun, 1898) -- valid -- bimarginate bathyal crab
  Neopisosoma angustifrons (J. E. Benedict, 1901) -- valid
  Neopontonides beaufortensis (Borradaile, 1920) -- valid -- seawhip shrimp
  Neopontonides chacei Heard, 1986 -- valid
  Nephropsis aculeata S. I. Smith, 1881 -- valid -- Florida lobsterette
  Nephropsis agassizii A. Milne-Edwards, 1880 -- valid -- prickly lobsterette
  Nephropsis neglecta Holthuis, 1974 -- valid -- ruby lobsterette
  Nephropsis rosea Bate, 1888 -- valid -- rosy lobsterette, two-toned lobsterette
  Nibilia antilocapra (Stimpson, 1871) -- valid -- shorthorn spiny crab
  Nikoides schmitti Manning and Chace, 1971 -- valid
  Notostomus distirus Chace, 1940 -- valid
  Notostomus elegans A. Milne-Edwards, 1881 -- valid
  Notostomus gibbosus A. Milne-Edwards, 1881 -- valid
  Notostomus japonicus Bate, 1888 -- valid -- Japanese spinyridge
  Notostomus robustus S. I. Smith, 1884 -- valid
  Ocypode quadrata (J. C. Fabricius, 1787) -- valid -- Atlantic ghost crab
  Ocypodidae Rafinesque, 1815 -- valid -- fiddler crabs, ghost crabs
  Odontozona libertae Gore, 1981 -- valid
  Odontozona spongicola (Alcock and A. R. S. Anderson, 1899) -- valid -- sponge odontozonid
  Oedignathus inermis (Stimpson, 1860) -- valid -- granular claw crab
  Ogyrides alphaerostris (Kingsley, 1880) -- valid -- estuarine longeye shrimp
  Ogyrides hayi A. B. Williams, 1981 -- valid -- sand longeye shrimp
  Opisthopus transversus M. J. Rathbun, 1893 -- valid -- mottled pea crab
  Oplophoridae Dana, 1852 -- valid -- deepsea shrimps
  Oplophorus gracilirostris A. Milne-Edwards, 1881 -- valid
  Oplophorus grimaldii Coutière, 1905 -- valid
  Oplophorus spinicauda A. Milne-Edwards, 1883 -- invalid
  Oplophorus spinosus (Brullé, 1839) -- valid
  Oplopisa spinipes A. Milne-Edwards, 1878 -- valid
  Orconectes acares Fitzpatrick, 1965 -- valid
  Orconectes alabamensis (Faxon, 1884) -- valid
  Orconectes australis (Rhoades, 1941) -- valid
  Orconectes barrenensis Rhoades, 1944 -- valid -- Barren River crayfish
  Orconectes bisectus Rhoades, 1944 -- valid -- Crittenden crayfish
  Orconectes causeyi Jester, 1967 -- valid
  Orconectes chickasawae M. R. Cooper and Hobbs, 1980 -- valid
  Orconectes compressus (Faxon, 1884) -- valid -- slender crayfish
  Orconectes cooperi M. R. Cooper and Hobbs, 1980 -- valid -- Flint River crayfish
  Orconectes deanae Reimer and Jester, 1975 -- valid -- Conchas crayfish
  Orconectes difficilis (Faxon, 1898) -- valid -- painted crayfish
  Orconectes erichsonianus (Faxon, 1898) -- valid
  Orconectes etnieri R. W. Bouchard and J. W. Bouchard, 1976 -- valid
  Orconectes eupunctus A. B. Williams, 1952 -- valid -- coldwater crayfish
  Orconectes forceps (Faxon, 1884) -- valid
  Orconectes harrisonii (Faxon, 1884) -- valid -- belted crayfish
  Orconectes hobbsi Penn, 1950 -- valid
  Orconectes holti M. R. Cooper and Hobbs, 1980 -- valid
  Orconectes hylas (Faxon, 1890) -- valid -- woodland crayfish
  Orconectes illinoiensis Brown, 1956 -- valid
  Orconectes immunis (Hagen, 1870) -- valid -- calico crayfish
  Orconectes incomptus Hobbs and Barr, 1972 -- valid -- Tennessee cave crayfish
  Orconectes indianensis (Hay, 1896) -- valid
  Orconectes inermis Cope, 1872 -- valid
  Orconectes jeffersoni Rhoades, 1944 -- valid -- Louisville crayfish
  Orconectes kentuckiensis Rhoades, 1944 -- valid -- Kentucky crayfish
  Orconectes lancifer (Hagen, 1870) -- valid -- shrimp crayfish
  Orconectes leptogonpodus Hobbs, 1948 -- invalid
  Orconectes limosus (Rafinesque, 1817) -- valid -- spinycheek crayfish
  Orconectes longidigitus (Faxon, 1898) -- valid -- longpincered crayfish
  Orconectes luteus (Creaser, 1933) -- valid -- golden crayfish
  Orconectes macrus A. B. Williams, 1952 -- valid -- Neosho midget crayfish
  Orconectes marchandi Hobbs, 1948 -- valid -- Sharp River crayfish
  Orconectes medius (Faxon, 1884) -- valid -- saddleback crayfish
  Orconectes meeki (Faxon, 1898) -- valid -- Meek crayfish
  Orconectes menae (Creaser, 1933) -- valid
  Orconectes mirus (Ortmann, 1931) -- valid
  Orconectes mississippiensis (Faxon, 1884) -- valid -- Mississippi crayfish
  Orconectes nais (Faxon, 1885) -- valid
  Orconectes nana A. B. Williams, 1952 -- valid
  Orconectes neglectus (Faxon, 1885) -- valid -- ringed crayfish
  Orconectes obscurus (Hagen, 1870) -- valid -- Allegheny crayfish
  Orconectes ozarkae A. B. Williams, 1952 -- valid -- Ozark crayfish
  Orconectes palmeri (Faxon, 1884) -- valid -- gray-speckled crayfish
  Orconectes pellucidus (Tellkampf, 1844) -- valid -- Mammoth Cave crayfish
  Orconectes perfectus Walls, 1972 -- valid
  Orconectes peruncus (Creaser, 1931) -- valid -- Big Creek crayfish
  Orconectes placidus (Hagen, 1870) -- valid -- placid crayfish
  Orconectes propinquus (Girard, 1852) -- valid -- northern clearwater crayfish
  Orconectes punctimanus (Creaser, 1933) -- valid -- spothand crayfish
  Orconectes putnami (Faxon, 1884) -- valid -- phallic crayfish
  Orconectes quadruncus (Creaser, 1933) -- valid -- St. Francis River crayfish
  Orconectes rafinesquei Rhoades, 1944 -- valid -- Rafinesque crayfish
  Orconectes rhoadesi Hobbs, 1949 -- valid
  Orconectes rusticus (Girard, 1852) -- valid -- rusty crayfish
  Orconectes sanbornii (Faxon, 1884) -- valid -- Sanborn crayfish
  Orconectes saxatilis R. W. Bouchard and J. W. Bouchard, 1976 -- valid -- Kiamichi crayfish
  Orconectes shoupi Hobbs, 1948 -- valid -- Nashville crayfish
  Orconectes sloanii (Bundy, 1876) -- valid -- Sloan crayfish
  Orconectes spinosus (Bundy, 1877) -- valid
  Orconectes stannardi Page, 1985 -- valid -- Little Wabash crayfish
  Orconectes tricuspis Rhoades, 1944 -- valid -- Rhode crayfish
  Orconectes validus (Faxon, 1914) -- valid
  Orconectes virginiensis Hobbs, 1951 -- valid -- Chowanoke crayfish
  Orconectes virilis (Hagen, 1870) -- valid -- virile crayfish
  Orconectes williamsi Fitzpatrick, 1966 -- valid -- Williams crayfish
  Orconectes wrighti Hobbs, 1948 -- valid -- Hardin crayfish
  Oregonia bifurca M. J. Rathbun, 1902 -- valid -- splitnose crab
  Oregonia gracilis Dana, 1851 -- valid -- graceful decorator crab
  Orthopagurus minimus (Holmes, 1900) -- valid -- toothshell hermit
  Orthotheres strombi (M. J. Rathbun, 1905) -- valid -- conch pea crab
  Osachila antillensis M. J. Rathbun, 1916 -- valid
  Osachila semilevis M. J. Rathbun, 1916 -- valid -- thinlip jewelbox crab
  Osachila tuberosa Stimpson, 1871 -- valid -- thicklip jewelbox crab
  Ostraconotus spatulipes (A. Milne-Edwards, 1880) -- valid
  Ovalipes floridanus Hay and Shore, 1918 -- valid -- Florida lady crab
  Ovalipes ocellatus (J. F. W. Herbst, 1799) -- valid -- lady crab, ocellate lady crab
  Ovalipes stephensoni A. B. Williams, 1976 -- valid -- coarsehand lady crab
  Pachycheles Stimpson, 1858 -- valid
  Pachycheles ackleianus A. Milne-Edwards, 1880 -- valid -- red-reef porcelain crab, redreef porcelain crab
  Pachycheles holosericus Schmitt, 1921 -- valid -- sponge porcelain crab
  Pachycheles monilifer (Dana, 1852) -- valid -- wormreef porcelain crab
  Pachycheles pilosus (H. Milne Edwards, 1837) -- valid -- pilose porcelain crab
  Pachycheles pubescens Holmes, 1900 -- valid -- pubescent porcelain crab
  Pachycheles riisei (Stimpson, 1858) -- valid -- Riise porcelain crab
  Pachycheles rudis Stimpson, 1859 -- valid -- thickclaw porcelain crab
  Pachycheles rugimanus A. Milne-Edwards, 1880 -- valid -- sculptured porcelain crab
  Pachygrapsus crassipes J. W. Randall, 1840 -- valid -- striped shore crab
  Pachygrapsus gracilis (de Saussure, 1858) -- valid -- dark shore crab
  Pachygrapsus marinus (M. J. Rathbun, 1914) -- invalid -- drifter crab
  Pachygrapsus transversus (Gibbes, 1850) -- valid -- mottled shore crab
  Pacifastacus connectens (Faxon, 1914) -- valid
  Pacifastacus fortis (Faxon, 1914) -- valid -- placid crayfish, Shasta crayfish
  Pacifastacus gambelii (Girard, 1852) -- valid
  Pacifastacus leniusculus (Dana, 1852) -- valid -- signal crayfish
  Pacifastacus nigrescens (Stimpson, 1857) -- valid -- sooty crayfish
  Paguridae Latreille, 1802 -- valid -- right-handed hermit crabs
  Paguristes Dana, 1852 -- valid
  Paguristes anomalus Bouvier, 1918 -- valid
  Paguristes bakeri Holmes, 1900 -- valid -- digger hermit
  Paguristes cadenati Forest, 1954 -- valid -- red reef hermit
  Paguristes erythrops Holthuis, 1959 -- valid
  Paguristes grayi J. E. Benedict, 1901 -- valid
  Paguristes hernancortezi McLaughlin and Provenzano, 1974 -- valid
  Paguristes hewatti Wass, 1963 -- valid
  Paguristes hummi Wass, 1955 -- valid
  Paguristes inconstans McLaughlin and Provenzano, 1974 -- valid
  Paguristes invisisacculus McLaughlin and Provenzano, 1974 -- valid
  Paguristes laticlavus McLaughlin and Provenzano, 1974 -- valid
  Paguristes limonensis McLaughlin and Provenzano, 1974 -- valid
  Paguristes lymani A. Milne-Edwards and Bouvier, 1893 -- valid
  Paguristes moorei J. E. Benedict, 1901 -- valid
  Paguristes oxyophthalmus Holthuis, 1959 -- valid
  Paguristes parvus Holmes, 1900 -- valid -- island hermit
  Paguristes puncticeps J. E. Benedict, 1901 -- valid
  Paguristes sericeus A. Milne-Edwards, 1880 -- valid -- blue-eye hermit, blue-eyed hermit
  Paguristes spinipes A. Milne-Edwards, 1880 -- valid
  Paguristes starki Provenzano, 1965 -- valid
  Paguristes tortugae Schmitt, 1933 -- valid -- bandeye hermit
  Paguristes triangulatus A. Milne-Edwards and Bouvier, 1893 -- valid
  Paguristes turgidus (Stimpson, 1856) -- valid
  Paguristes ulreyi Schmitt, 1921 -- valid -- furry hermit
  Paguristes wassi Provenzano, 1961 -- valid
  Pagurus Fabricius, 1775 -- valid
  Pagurus acadianus J. E. Benedict, 1901 -- valid
  Pagurus aleuticus (J. E. Benedict, 1892) -- valid -- Aleutian hermit, Aleutican hermit
  Pagurus annulipes (Stimpson, 1860) -- valid
  Pagurus arcuatus Squires, 1964 -- valid
  Pagurus armatus (Dana, 1851) -- valid -- armed hermit
  Pagurus beringanus (J. E. Benedict, 1892) -- valid -- Bering hermit
  Pagurus bouvieri (Faxon, 1895) -- valid
  Pagurus brandti (J. E. Benedict, 1892) -- valid -- sponge hermit
  Pagurus brevidactylus (Stimpson, 1859) -- valid
  Pagurus bullisi Wass, 1963 -- valid
  Pagurus capillatus (J. E. Benedict, 1892) -- valid
  Pagurus carolinensis McLaughlin, 1975 -- valid -- wormreef hermit
  Pagurus caurinus J. F. L. Hart, 1971 -- valid -- greenmark hermit
  Pagurus confragosus (J. E. Benedict, 1892) -- valid -- knobbyhand hermit
  Pagurus cornutus (J. E. Benedict, 1892) -- valid -- hornyhand hermit
  Pagurus criniticornis (Dana, 1852) -- valid
  Pagurus curacaoensis (J. E. Benedict, 1892) -- valid
  Pagurus dalli (J. E. Benedict, 1892) -- valid -- whiteknee hermit
  Pagurus defensus (J. E. Benedict, 1892) -- valid
  Pagurus dissimilis (A. Milne-Edwards and Bouvier, 1893) -- valid
  Pagurus granosimanus (Stimpson, 1859) -- valid -- grainyhand hermit
  Pagurus gymnodactylus Lemaitre, 1982 -- valid
  Pagurus hemphilli (J. E. Benedict, 1892) -- valid -- maroon hermit
  Pagurus hendersoni Wass, 1963 -- invalid
  Pagurus hirsutiusculus (Dana, 1851) -- valid -- hairy hermit
  Pagurus impressus (J. E. Benedict, 1892) -- valid -- dimpled hermit, palmate hermit crab
  Pagurus kennerlyi (Stimpson, 1864) -- valid -- bluespine hermit
  Pagurus longicarpus Say, 1817 -- valid -- long-armed hermit crab, longwrist hermit
  Pagurus marshi J. E. Benedict, 1901 -- valid
  Pagurus mertensii Brandt, 1851 -- valid
  Pagurus middendorfii Brandt, 1851 -- valid
  Pagurus ochotensis Brandt, 1851 -- valid -- Alaskan hermit
  Pagurus piercei Wass, 1963 -- invalid -- coralthicket hermit
  Pagurus politus (S. I. Smith, 1882) -- valid
  Pagurus pollicaris Say, 1817 -- valid -- flatclaw hermit, gray hermit crab
  Pagurus provenzanoi Forest and de Saint Laurent, 1968 -- valid
  Pagurus pubescens Krøyer, 1838 -- valid
  Pagurus quaylei J. F. L. Hart, 1971 -- valid
  Pagurus rathbuni (J. E. Benedict, 1892) -- valid -- longfinger hermit
  Pagurus redondoensis Wicksten, 1982 -- valid -- bandclaw hermit
  Pagurus rotundimanus Wass, 1963 -- valid
  Pagurus samuelis (Stimpson, 1857) -- valid -- blueband hermit
  Pagurus setosus (J. E. Benedict, 1892) -- valid -- setose hermit
  Pagurus spilocarpus Haig, 1977 -- valid -- spotwrist hermit
  Pagurus stevensae J. F. L. Hart, 1971 -- valid -- Stevens hermit
  Pagurus tanneri (J. E. Benedict, 1892) -- valid -- longhand hermit
  Pagurus townsendi (J. E. Benedict, 1892) -- valid
  Pagurus trigonocheirus (Stimpson, 1858) -- valid -- fuzzy hermit
  Pagurus undosus (J. E. Benedict, 1892) -- valid -- Pribilof hermit
  Palaemon floridanus Chace, 1942 -- valid -- Florida grass shrimp
  Palaemon macrodactylus M. J. Rathbun, 1902 -- valid -- migrant prawn, oriental shrimp
  Palaemon northropi (Rankin, 1898) -- valid -- Caribbean bait prawn, crossbanded grass shrimp
  Palaemon ritteri Holmes, 1895 -- valid -- barred grass shrimp
  Palaemonella holmesi (Nobili, 1907) -- valid -- southern algae shrimp
  Palaemonetes antrorum J. E. Benedict, 1896 -- valid -- Balcones cave shrimp
  Palaemonetes cummingi Chace, 1954 -- valid -- Florida cave shrimp, Squirrel Chimney Cave shrimp
  Palaemonetes hiltoni Schmitt, 1921 -- valid -- Hilton shrimp
  Palaemonetes holthuisi Strenth, 1976 -- invalid -- Purgatory cave shrimp
  Palaemonetes intermedius Holthuis, 1949 -- valid -- brackish grass shrimp
  Palaemonetes kadiakensis M. J. Rathbun, 1902 -- valid -- Mississippi grass shrimp
  Palaemonetes paludosus (Gibbes, 1850) -- valid -- Eastern grass shrimp, riverine grass shrimp
  Palaemonetes pugio Holthuis, 1949 -- valid -- daggerblade grass shrimp
  Palaemonetes texanus Strenth, 1976 -- valid -- Texas river shrimp
  Palaemonetes vulgaris (Say, 1818) -- valid -- common American prawn, common grass shrimp, marsh grass shrimp, marsh shrimp
  Palaemonias alabamae Smalley, 1961 -- valid -- Alabama cave shrimp
  Palaemonias ganteri Hay, 1901 -- valid -- Kentucky cave shrimp, Mammoth cave shrimp
  Palicidae Bouvier, 1898 -- valid -- stilt crabs
  Palicus affinis A. Milne-Edwards and Bouvier, 1899 -- valid -- Antillean stilt crab, Antillian stilt crab
  Palicus alternatus M. J. Rathbun, 1897 -- valid -- labile stilt crab
  Palicus cristatipes (A. Milne-Edwards, 1880) -- valid
  Palicus cursor (A. Milne-Edwards, 1880) -- valid -- bathyal stilt crab
  Palicus dentatus (A. Milne-Edwards, 1880) -- valid -- armored stilt crab
  Palicus faxoni M. J. Rathbun, 1897 -- valid -- finned stilt crab
  Palicus floridanus (M. J. Rathbun, 1918) -- valid
  Palicus gracilis (S. I. Smith, 1883) -- valid -- delicate stilt crab
  Palicus obesus (A. Milne-Edwards, 1880) -- valid -- inflated stilt crab
  Palicus sica (A. Milne-Edwards, 1880) -- valid -- winged stilt crab
  Palinurellus gundlachi Von Martens, 1878 -- valid -- Caribbean furry lobster, copper furry lobster
  Palinuridae Latreille, 1802 -- valid -- spiny lobsters
  Pandalopsis aleutica M. J. Rathbun, 1902 -- valid -- Aleutian bigeye
  Pandalopsis ampla Bate, 1888 -- valid -- deepwater bigeye
  Pandalopsis dispar M. J. Rathbun, 1902 -- valid -- sidestripe shrimp, sidestriped shrimp
  Pandalopsis longirostris M. J. Rathbun, 1902 -- valid -- Northern longbeak
  Pandalus Leach, 1814 -- valid
  Pandalus borealis Krøyer, 1838 -- valid -- northern shrimp
  Pandalus danae Stimpson, 1857 -- valid -- dock shrimp
  Pandalus goniurus Stimpson, 1860 -- valid -- humpy shrimp
  Pandalus gurneyi Stimpson, 1871 -- valid -- California longbeak
  Pandalus hypsinotus Brandt, 1851 -- valid -- coonstriped shrimp
  Pandalus jordani M. J. Rathbun, 1902 -- valid -- ocean shrimp
  Pandalus montagui Leach, 1814 -- valid -- Aesop shrimp
  Pandalus platyceros Brandt, 1851 -- valid -- spot shrimp
  Pandalus propinquus G. O. Sars, 1870 -- invalid
  Pandalus stenolepis M. J. Rathbun, 1902 -- valid -- roughpatch shrimp
  Pandalus tridens M. J. Rathbun, 1902 -- valid -- yellowleg pandalid
  Panopeus americanus de Saussure, 1857 -- valid -- narrowback mud crab
  Panopeus bermudensis J. E. Benedict and M. J. Rathbun, 1891 -- valid -- strongtooth mud crab
  Panopeus harttii S. I. Smith, 1869 -- invalid -- areolate mud crab
  Panopeus herbstii H. Milne Edwards, 1834 -- valid -- Atlantic mud crab
  Panopeus lacustris Desbonne, 1867 -- valid -- knotfinger mud crab
  Panopeus occidentalis de Saussure, 1857 -- valid -- furrowed mud crab
  Panopeus rugosus A. Milne-Edwards, 1880 -- valid -- granulose mud crab
  Panopeus simpsoni M. J. Rathbun, 1930 -- valid -- oystershell mud crab
  Panopeus turgidus M. J. Rathbun, 1930 -- invalid -- ridgeback mud crab
  Panoplax depressa Stimpson, 1871 -- valid -- depressed rubble crab
  Pantomus parvulus A. Milne-Edwards, 1883 -- valid -- hinged longbeak
  Panulirus argus (Latreille, 1804) -- valid -- Caribbean spiny lobster
  Panulirus guttatus (Latreille, 1804) -- valid -- spotted spiny lobster
  Panulirus interruptus (J. W. Randall, 1840) -- valid -- California spiny lobster
  Panulirus laevicauda (Latreille, 1817) -- valid -- smoothtail spiny lobster
  Paracrangon echinata Dana, 1852 -- valid -- horned shrimp
  Paractaea rufopunctata nodosa (Stimpson, 1860) -- valid -- nodose rubble crab
  Paraliomera dispar (Stimpson, 1871) -- valid -- black coral crab
  Paraliomera longimana (A. Milne-Edwards, 1865) -- valid -- longarm coral crab
  Paralithodes californiensis (J. E. Benedict, 1895) -- valid -- California king crab
  Paralithodes camtschaticus (Tilesius, 1815) -- valid -- red king crab
  Paralithodes platypus Brandt, 1850 -- valid -- blue king crab
  Paralithodes rathbuni (J. E. Benedict, 1895) -- valid
  Paralomis cubensis Chace, 1939 -- valid
  Paralomis multispina (J. E. Benedict, 1895) -- valid
  Paralomis verrilli (J. E. Benedict, 1895) -- valid
  Parapaguridae Smith, 1882 -- valid -- deepwater hermit crabs
  Parapagurodes laurentae McLaughlin and Haig, 1973 -- valid
  Parapagurodes makarovi McLaughlin and Haig, 1973 -- valid
  Parapagurus abyssorum (Filhol, 1855) -- valid
  Parapagurus alaminos Lemaitre, 1986 -- valid
  Parapagurus arcuatus (A. Milne-Edwards and Bouvier, 1893) -- invalid
  Parapagurus bicristatus (A. Milne-Edwards, 1880) -- invalid
  Parapagurus haigae de Saint Laurent, 1972 -- invalid
  Parapagurus nudus (A. Milne-Edwards, 1891) -- valid
  Parapagurus pictus (S. I. Smith, 1883) -- invalid
  Parapagurus pilimanus (A. Milne-Edwards, 1880) -- invalid
  Parapagurus pilosimanus S. I. Smith, 1879 -- valid
  Parapasiphae compta S. I. Smith, 1884 -- valid
  Parapasiphae cristata S. I. Smith, 1884 -- valid
  Parapasiphae macrodactyla Chace, 1939 -- valid
  Parapasiphae serrata Rathbun, 1902 -- valid
  Parapasiphae sulcatifrons S. I. Smith, 1884 -- valid -- grooveback shrimp
  Parapenaeus politus (S. I. Smith, 1881) -- valid -- deep-water rose shrimp, rose shrimp
  Parapetrolisthes tortugensis (Glassell, 1945) -- valid -- spiny porcelain crab
  Parapinnixa affinis Holmes, 1900 -- valid -- California Bay pea crab
  Parapinnixa beaufortensis M. J. Rathbun, 1918 -- valid
  Parapinnixa bouvieri M. J. Rathbun, 1918 -- valid
  Parapinnixa hendersoni M. J. Rathbun, 1918 -- valid
  Parapontocaris caribbaea (Boone, 1927) -- valid
  Parapontocaris vicina (Dardeau and Heard, 1983) -- valid
  Paraxanthias taylori (Stimpson, 1861) -- valid -- lumpy rubble crab
  Paromola faxoni (Schmitt, 1921) -- invalid
  Parribacus antarcticus (Lund, 1793) -- valid -- sculptured mitten lobster, sculptured slipper lobster, ula-pehu
  Parthenope agona (Stimpson, 1871) -- valid -- yellow elbow crab
  Parthenope fraterculus (Stimpson, 1871) -- invalid -- rough elbow crab
  Parthenope granulata (Kingsley, 1879) -- invalid -- bladetooth elbow crab
  Parthenope pourtalesii (Stimpson, 1871) -- invalid -- spinous elbow crab
  Parthenope serrata H. Milne Edwards, 1834 -- invalid -- sawtooth elbow crab
  Parthenopidae MacLeay, 1838 -- valid -- elbow crabs
  Pasiphaea affinis M. J. Rathbun, 1902 -- valid
  Pasiphaea chacei Yaldwyn, 1962 -- valid
  Pasiphaea corteziana M. J. Rathbun, 1902 -- valid
  Pasiphaea emarginata M. J. Rathbun, 1902 -- valid
  Pasiphaea magna Faxon, 1893 -- valid
  Pasiphaea merriami Schmitt, 1931 -- valid -- ghost comb shrimp
  Pasiphaea multidentata Esmark, 1866 -- valid -- pink glass shrimp
  Pasiphaea pacifica M. J. Rathbun, 1902 -- valid -- Pacific glass shrimp
  Pasiphaea sivado (Risso, 1816) -- valid -- white glass shrimp
  Pasiphaea tarda Krøyer, 1845 -- valid -- crimson pasiphaeid
  Pasiphaeidae Dana, 1852 -- valid -- glass shrimps
  Pelia mutica (Gibbes, 1850) -- valid -- cryptic teardrop crab
  Pelia tumida (Lockington, 1877) -- valid -- dwarf teardrop crab
  Penaeidae Rafinesque, 1815 -- valid -- crevettes pénaéïdes, penaeid shrimps
  Penaeoidea Rafinesque, 1815 -- valid -- crevettes pénaéïdes, penaeoid shrimps
  Penaeopsis serrata Bate, 1881 -- valid -- camarón megalops, crevette megalops, megalops shrimp, pinkspeckled shrimp
  Penaeus aztecus Ives, 1891 -- invalid -- brown shrimp, northern brown shrimp
  Penaeus brasiliensis Latreille, 1817 -- invalid -- pinkspotted shrimp, redspotted shrimp
  Penaeus californiensis Holmes, 1900 -- invalid -- yellowleg shrimp
  Penaeus duorarum Burkenroad, 1939 -- invalid -- northern pink shrimp, pink shrimp
  Penaeus setiferus (Linnaeus, 1767) -- invalid -- northern white shrimp, white shrimp
  Percnon gibbesi (H. Milne Edwards, 1853) -- valid -- nimble spray crab
  Periclimenaeus ascidiarum Holthuis, 1951 -- valid -- Caribbean ascidian shrimp
  Periclimenaeus atlanticus (M. J. Rathbun, 1901) -- valid
  Periclimenaeus bermudensis (Armstrong, 1940) -- valid -- Bermuda sponge shrimp
  Periclimenaeus bredini Chace, 1972 -- valid
  Periclimenaeus caraibicus Holthuis, 1971 -- valid
  Periclimenaeus chacei Abele, 1971 -- valid
  Periclimenaeus maxillulidens (Schmitt, 1936) -- valid
  Periclimenaeus pearsei (Schmitt, 1932) -- valid -- black sponge shrimp
  Periclimenaeus perlatus (Boone, 1930) -- valid
  Periclimenaeus schmitti Holthuis, 1951 -- valid -- Tortugas bigclaw
  Periclimenaeus wilsoni (Hay, 1917) -- valid -- clear sponge shrimp
  Periclimenes americanus (Kingsley, 1878) -- valid -- American grass shrimp
  Periclimenes harringtoni Lebour, 1949 -- valid -- Bermuda shrimp
  Periclimenes infraspinis (M. J. Rathbun, 1902) -- valid
  Periclimenes iridescens Lebour, 1949 -- valid -- iridescent shrimp
  Periclimenes longicaudatus (Stimpson, 1860) -- valid -- longtail grass shrimp
  Periclimenes magnus Holthuis, 1951 -- valid
  Periclimenes pandionis Holthuis, 1951 -- valid
  Periclimenes pedersoni Chace, 1958 -- valid -- Pederson cleaner shrimp
  Periclimenes perryae Chace, 1942 -- valid -- basketstar shrimp
  Periclimenes rathbunae Schmitt, 1924 -- valid
  Periclimenes tenellus (S. I. Smith, 1882) -- valid
  Periclimenes yucatanicus (Ives, 1891) -- valid -- spotted cleaner shrimp
  Persephona crinita M. J. Rathbun, 1931 -- valid -- pink purse crab
  Persephona mediterranea (J. F. W. Herbst, 1794) -- valid -- mottled purse crab
  Petrochirus Stimpson, 1858 -- valid
  Petrochirus diogenes (Linnaeus, 1758) -- valid -- giant hermit
  Petrolisthes Stimpson, 1858 -- valid
  Petrolisthes cabrilloi Glassell, 1945 -- valid -- Cabrillo porcelain crab
  Petrolisthes cinctipes (J. W. Randall, 1840) -- valid -- flat porcelain crab
  Petrolisthes eriomerus Stimpson, 1871 -- valid -- flattop crab
  Petrolisthes galathinus (Bosc, 1802) -- valid -- banded porcelain crab
  Petrolisthes jugosus Streets, 1872 -- valid -- red-white porcelain crab, redwhite porcelain crab
  Petrolisthes manimaculis Glassell, 1945 -- valid -- chocolate porcelain crab
  Petrolisthes politus (Gray, 1831) -- valid -- redback porcelain crab
  Petrolisthes rathbunae Schmitt, 1916 -- valid -- Rathbun procelain crab
  Philocheras gorei (Dardeau, 1980) -- valid
  Phimochirus McLaughlin, 1981 -- valid
  Phimochirus californiensis (J. E. Benedict, 1892) -- valid
  Phimochirus holthuisi (Provenzano, 1961) -- valid -- red-striped hermit
  Phimochirus leurocarpus McLaughlin, 1981 -- valid
  Phimochirus operculatus (Stimpson, 1859) -- valid -- polkadotted hermit
  Phimochirus randalli (Provenzano, 1961) -- valid
  Phyllolithodes papillosus Brandt, 1848 -- valid -- flatspine triangle crab, heart crab
  Picroceroides tubularis Miers, 1886 -- valid
  Pilumnoides nudifrons (Stimpson, 1871) -- valid -- nakedface hairy crab
  Pilumnoplax elata (A. Milne-Edwards, 1880) -- valid
  Pilumnus caribaeus Desbonne and Schramm, 1867 -- valid -- coarsespine hairy crab, coarsespined hairy crab
  Pilumnus dasypodus Kingsley, 1879 -- valid -- shortspine hairy crab, shortspined hairy crab
  Pilumnus floridanus Stimpson, 1871 -- valid -- plumed hairy crab
  Pilumnus gemmatus Stimpson, 1860 -- valid -- tuberculate hairy crab
  Pilumnus holosericus M. J. Rathbun, 1898 -- valid -- roseate hairy crab
  Pilumnus lacteus Stimpson, 1871 -- valid -- velvet hairy crab
  Pilumnus longleyi M. J. Rathbun, 1930 -- valid -- studded hairy crab
  Pilumnus marshi M. J. Rathbun, 1901 -- valid -- quadrate hairy crab
  Pilumnus nudimanus M. J. Rathbun, 1901 -- valid
  Pilumnus pannosus M. J. Rathbun, 1896 -- valid -- beaded hairy crab
  Pilumnus sayi M. J. Rathbun, 1897 -- valid -- spineback hairy crab
  Pilumnus spinohirsutus (Lockington, 1876) -- valid -- retiring hairy crab
  Pilumnus spinosissimus M. J. Rathbun, 1898 -- valid -- longspine hairy crab, longspined hairy crab
  Pinnaxodes floridensis H. W. Wells and M. J. Wells, 1961 -- valid -- polka-dot pea crab, polkadotted pea crab
  Pinnixa barnharti M. J. Rathbun, 1918 -- valid
  Pinnixa chacei Wass, 1955 -- invalid -- Chace pea crab
  Pinnixa chaetopterana Stimpson, 1860 -- valid -- tube pea crab
  Pinnixa cristata M. J. Rathbun, 1900 -- invalid
  Pinnixa cylindrica (Say, 1818) -- valid
  Pinnixa eburna H. W. Wells, 1928 -- valid
  Pinnixa faba (Dana, 1851) -- valid -- mantle pea crab
  Pinnixa floridana M. J. Rathbun, 1918 -- valid
  Pinnixa franciscana M. J. Rathbun, 1918 -- valid
  Pinnixa hiatus M. J. Rathbun, 1918 -- valid
  Pinnixa leptosynaptae Wass, 1968 -- valid
  Pinnixa littoralis Holmes, 1894 -- valid -- gaper pea crab
  Pinnixa longipes (Lockington, 1876) -- valid -- longleg pea crab, longlegged pea crab
  Pinnixa lunzi Glassell, 1937 -- valid -- Lunz pea crab
  Pinnixa monodactyla (Say, 1818) -- valid -- thumbless pea crab
  Pinnixa occidentalis M. J. Rathbun, 1893 -- valid -- western pea crab
  Pinnixa pearsei Wass, 1955 -- valid
  Pinnixa retinens M. J. Rathbun, 1918 -- valid
  Pinnixa sayana Stimpson, 1860 -- valid
  Pinnixa schmitti M. J. Rathbun, 1918 -- valid -- Schmitt pea crab
  Pinnixa tubicola Holmes, 1894 -- valid -- tube-dwelling pea crab
  Pinnixa weymouthi M. J. Rathbun, 1918 -- valid
  Pinnotheres chamae M. H. Roberts, 1975 -- invalid -- jewel-box pea crab
  Pinnotheres hemphilli (M. J. Rathbun, 1918) -- valid
  Pinnotheres maculatus Say, 1818 -- invalid -- squatter pea crab
  Pinnotheres moseri M. J. Rathbun, 1918 -- invalid -- ascidian pea crab
  Pinnotheres nudus Holmes, 1895 -- invalid
  Pinnotheres ostreum Say, 1817 -- invalid -- oyster pea crab
  Pinnotheres pugettensis Holmes, 1900 -- valid -- Puget pea crab
  Pinnotheres shoemakeri M. J. Rathbun, 1918 -- valid
  Pinnotheres taylori M. J. Rathbun, 1918 -- valid
  Pinnotheridae De Haan, 1833 -- valid -- pea crabs
  Pitho aculeata (Gibbes, 1850) -- valid -- massive urn crab
  Pitho anisodon (von Martens, 1872) -- valid -- oval urn crab
  Pitho laevigata (A. Milne-Edwards, 1875) -- valid -- eggshell urn crab
  Pitho lherminieri (Schramm, 1867) -- valid -- broadback urn crab
  Pitho mirabilis (J. F. W. Herbst, 1794) -- valid
  Pitho quadridentata (Miers, 1879) -- valid
  Placetron wosnessenskii Schalfeew, 1892 -- valid -- scaled crab
  Plagusia depressa (J. C. Fabricius, 1775) -- valid -- tidal spray crab
  Planes cyaneus Dana, 1852 -- valid -- flotsam crab, hihi-wai
  Planes minutus (Linnaeus, 1758) -- valid -- gulfweed crab
  Platyactaea setigera (H. Milne Edwards, 1834) -- valid -- bristled rubble crab
  Platychirograpsus spectabilis (De Man, 1896) -- valid -- saber crab
  Platypodiella spectabilis (J. F. W. Herbst, 1794) -- valid -- gaudy clown crab
  Pleoticus robustus (S. I. Smith, 1885) -- valid -- camarón real rojo, camarón rojo gigante, camarón rojo real, langostino rojo, royal red shrimp, salicoque royale rouge
  Plesionika acanthonotus (S. I. Smith, 1882) -- valid -- lesser striped shrimp, striped shrimp
  Plesionika edwardsii (Brandt, 1851) -- valid -- soldier striped shrimp
  Plesionika ensis (A. Milne-Edwards, 1881) -- valid -- gladiator striped shrimp, striped gladiator shrimp
  Plesionika escatilis (Stimpson, 1860) -- valid
  Plesionika holthuisi Crosnier and Forest, 1968 -- valid
  Plesionika longicauda (M. J. Rathbun, 1901) -- valid
  Plesionika longipes (A. Milne-Edwards, 1881) -- valid
  Plesionika martia (A. Milne-Edwards, 1883) -- valid -- golden shrimp
  Plesionika mexicana Chace, 1937 -- valid -- Mexican longbeak
  Plesionika miles (A. Milne-Edwards, 1883) -- valid
  Plesionika polyacanthomerus L. H. Pequegnat, 1970 -- valid
  Plesionika sanctaecatalinae Wicksten, 1983 -- valid
  Plesionika tenuipes (S. I. Smith, 1881) -- valid
  Plesionika williamsi Forest, 1964 -- valid -- Guinea striped shrimp
  Plesionika willisi (L. H. Pequegnat, 1970) -- valid
  Plesiopenaeus edwardsianus (J. Y. Johnson, 1868) -- invalid -- scarlet gamba prawn, scarlet shrimp
  Pleuroncodes planipes Stimpson, 1860 -- valid -- pelagic red crab
  Podochela curvirostris (A. Milne-Edwards, 1879) -- valid
  Podochela gracilipes Stimpson, 1871 -- valid -- unicorn neck crab
  Podochela hemphillii (Lockington, 1877) -- valid -- Hemphill kelp crab
  Podochela lamelligera (Stimpson, 1871) -- valid
  Podochela lobifrons M. J. Rathbun, 1893 -- valid
  Podochela macrodera Stimpson, 1860 -- valid
  Podochela riisei Stimpson, 1860 -- valid -- longfinger neck crab
  Podochela sidneyi M. J. Rathbun, 1924 -- valid -- shortfinger neck crab
  Polycheles crucifer (Willemoes-Suhm, 1873) -- valid
  Polycheles granulatus Faxon, 1893 -- invalid
  Polycheles typhlops C. Heller, 1862 -- valid
  Polycheles validus (A. Milne-Edwards, 1880) -- invalid
  Polyonyx Stimpson, 1858 -- valid
  Polyonyx gibbesi Haig, 1956 -- valid -- eastern tube crab
  Polyonyx quadriungulatus Glassell, 1935 -- valid -- western tube crab
  Pontonia californiensis M. J. Rathbun, 1902 -- valid -- sea squirt shrimp
  Pontonia domestica Gibbes, 1850 -- valid -- Atlantic pen shrimp
  Pontonia margarita Smith, 1869 -- valid -- pearl oyster shrimp
  Pontonia mexicana Guérin-Méneville, 1856 -- valid -- Caribbean pen shrimp
  Pontonia unidens Kingsley, 1880 -- valid
  Pontoniopsis paulae Gore, 1981 -- valid
  Pontophilus abyssi S. I. Smith, 1884 -- valid
  Pontophilus brevirostris S. I. Smith, 1881 -- valid
  Pontophilus gorei Dardeau, 1980 -- invalid
  Pontophilus gracilis S. I. Smith, 1882 -- valid
  Pontophilus norvegicus (M. Sars, 1861) -- valid -- Norwegian shrimp
  Porcellana Lamarck, 1801 -- valid
  Porcellana sayana (Leach, 1820) -- valid -- spotted porcelain crab
  Porcellana sigsbeiana A. Milne-Edwards, 1880 -- valid -- striped porcelain crab
  Porcellana stimpsoni A. Milne-Edwards, 1880 -- valid -- Stimpson porcelain crab
  Portunidae Rafinesque, 1815 -- valid -- swimming crabs
  Portunus anceps (de Saussure, 1857) -- valid -- delicate swimming crab
  Portunus binoculus Holthuis, 1969 -- valid -- redspot swimming crab, redspotted swimming crab
  Portunus depressifrons (Stimpson, 1859) -- valid -- flatface swimming crab
  Portunus floridanus M. J. Rathbun, 1930 -- valid
  Portunus gibbesii (Stimpson, 1859) -- valid -- iridescent swimming crab
  Portunus ordwayi (Stimpson, 1860) -- valid -- redhair swimming crab
  Portunus sayi (Gibbes, 1850) -- valid -- sargassum swimming crab
  Portunus sebae (H. Milne Edwards, 1834) -- valid -- ocellate swimming crab
  Portunus spinicarpus (Stimpson, 1871) -- valid -- longspine swimming crab
  Portunus spinimanus Latreille, 1819 -- valid -- blotched swimming crab
  Portunus ventralis (A. Milne-Edwards, 1879) -- valid
  Portunus vocans A. Milne-Edwards, 1878 -- invalid
  Portunus xantusii (Stimpson, 1860) -- valid -- Xantus swimming crab
  Potimirim potimirim (F. Mueller, 1881) -- valid -- potimirim
  Prionoplax atlantica Kendall, 1891 -- valid
  Procambarus ablusus Penn, 1963 -- valid
  Procambarus acherontis (Lõnnberg, 1894) -- valid -- Orlando cave crayfish
  Procambarus acutissimus (Girard, 1852) -- valid
  Procambarus acutus (Girard, 1852) -- valid -- white river crawfish
  Procambarus advena (LeConte, 1856) -- valid
  Procambarus alleni (Faxon, 1884) -- valid
  Procambarus ancylus Hobbs, 1958 -- valid
  Procambarus angustatus (LeConte, 1856) -- valid -- sandhills crayfish
  Procambarus apalachicolae Hobbs, 1942 -- valid -- coastal flatwoods crayfish
  Procambarus barbatus (Faxon, 1890) -- valid
  Procambarus barbiger Fitzpatrick, 1978 -- valid -- Jackson prairie crayfish
  Procambarus bivittatus Hobbs, 1942 -- valid -- ribbon crayfish
  Procambarus blandingii (Harlan, 1830) -- valid
  Procambarus brazoriensis Albaugh, 1975 -- valid -- Brazoria crayfish
  Procambarus capillatus Hobbs, 1971 -- valid
  Procambarus caritus Hobbs, 1981 -- valid
  Procambarus clarkii (Girard, 1852) -- valid -- red swamp crawfish, red swamp crayfish
  Procambarus clemmeri Hobbs, 1975 -- valid
  Procambarus cometes Fitzpatrick, 1978 -- valid -- Mississippi flatwoods crayfish
  Procambarus conus Fitzpatrick, 1978 -- invalid -- Carrollton crayfish
  Procambarus curdi Reimer, 1975 -- valid
  Procambarus delicatus Hobbs and Franz, 1986 -- valid -- bigcheek cave crayfish
  Procambarus dupratzii Penn, 1953 -- invalid
  Procambarus echinatus Hobbs, 1956 -- valid
  Procambarus econfinae Hobbs, 1942 -- valid -- Panama City crayfish
  Procambarus elegans Hobbs, 1969 -- valid
  Procambarus enoplosternum Hobbs, 1947 -- valid
  Procambarus epicyrtus Hobbs, 1958 -- valid
  Procambarus erythrops Relyea and Sutton, 1975 -- valid -- Santa Fe cave crayfish
  Procambarus escambiensis Hobbs, 1942 -- valid -- Escambia crayfish
  Procambarus evermanni (Faxon, 1890) -- valid
  Procambarus fallax (Hagen, 1870) -- valid
  Procambarus fitzpatricki Hobbs, 1971 -- valid -- spinytail crayfish
  Procambarus franzi Hobbs and Lee, 1976 -- valid -- Orange Lake cave crayfish
  Procambarus geminus Hobbs, 1975 -- valid
  Procambarus geodytes Hobbs, 1942 -- valid
  Procambarus gibbus Hobbs, 1969 -- valid
  Procambarus gracilis (Bundy, 1876) -- valid -- prairie crayfish
  Procambarus hagenianus (Faxon, 1884) -- valid -- southeastern prairie crayfish
  Procambarus hayi (Faxon, 1884) -- valid
  Procambarus hinei (Ortmann, 1905) -- valid
  Procambarus hirsutus Hobbs, 1958 -- valid
  Procambarus horsti Hobbs and Means, 1972 -- valid -- Big Blue Springs cave crayfish, Big Blue Springs crayfish
  Procambarus howellae Hobbs, 1952 -- valid
  Procambarus hubbelli (Hobbs, 1940) -- valid
  Procambarus hybus Hobbs and Walton, 1957 -- valid
  Procambarus incilis Penn, 1962 -- valid
  Procambarus jaculus Hobbs and Walton, 1957 -- valid -- javelin crayfish
  Procambarus kilbyi (Hobbs, 1940) -- valid
  Procambarus lagniappe Black, 1968 -- valid -- lagniappe crayfish
  Procambarus latipleurum Hobbs, 1942 -- valid
  Procambarus lecontei (Hagen, 1870) -- valid -- Mobile crayfish
  Procambarus leitheuseri Franz and Hobbs, 1983 -- valid -- Coastal Lowland cave crayfish
  Procambarus leonensis Hobbs, 1942 -- valid
  Procambarus leptodactylus Hobbs, 1947 -- invalid -- Pee Dee lotic crayfish
  Procambarus lewisi Hobbs and Walton, 1959 -- valid
  Procambarus liberorum Fitzpatrick, 1978 -- valid -- Osage burrowing crayfish
  Procambarus litosternum Hobbs, 1947 -- valid
  Procambarus lophotus Hobbs and Walton, 1960 -- valid
  Procambarus lucifugus (Hobbs, 1940) -- valid -- Florida cave crayfish
  Procambarus lunzi (Hobbs, 1940) -- valid
  Procambarus lyeli Fitzpatrick and Hobbs, 1971 -- invalid -- Shutispear crayfish
  Procambarus mancus Hobbs and Walton, 1957 -- valid
  Procambarus marthae Hobbs, 1975 -- valid
  Procambarus medialis Hobbs, 1975 -- valid
  Procambarus milleri Hobbs, 1971 -- valid -- Miami cave crayfish
  Procambarus natchitochae Penn, 1953 -- valid
  Procambarus okaloosae Hobbs, 1942 -- valid
  Procambarus orcinus Hobbs and Means, 1972 -- valid -- Woodville Karst cave crayfish
  Procambarus ouachitae Penn, 1956 -- valid
  Procambarus paeninsulanus (Faxon, 1914) -- valid
  Procambarus pallidus (Hobbs, 1940) -- valid -- pallid cave crayfish
  Procambarus parasimulans Hobbs and Robison, 1982 -- valid
  Procambarus pearsei (Creaser, 1934) -- valid
  Procambarus pecki Hobbs, 1967 -- valid -- phantom cave crayfish
  Procambarus penni Hobbs, 1951 -- valid -- Pearl blackwater crayfish
  Procambarus petersi Hobbs, 1981 -- valid
  Procambarus pictus (Hobbs, 1940) -- valid -- spotted royal crayfish
  Procambarus planirostris Penn, 1953 -- valid
  Procambarus plumimanus Hobbs and Walton, 1958 -- valid
  Procambarus pogon Fitzpatrick, 1978 -- invalid -- bearded red crayfish
  Procambarus pubescens (Faxon, 1884) -- valid
  Procambarus pubischelae Hobbs, 1942 -- valid
  Procambarus pycnogonopodus Hobbs, 1942 -- valid
  Procambarus pygmaeus Hobbs, 1942 -- valid -- Christmas tree crayfish
  Procambarus raneyi Hobbs, 1953 -- valid
  Procambarus rathbunae (Hobbs, 1940) -- valid
  Procambarus reimeri Hobbs, 1979 -- valid
  Procambarus rogersi (Hobbs, 1938) -- valid
  Procambarus seminolae Hobbs, 1942 -- valid -- Seminole crayfish
  Procambarus shermani Hobbs, 1942 -- valid
  Procambarus simulans (Faxon, 1884) -- valid
  Procambarus spiculifer (Le Conte, 1856) -- valid
  Procambarus suttkusi Hobbs, 1953 -- valid
  Procambarus talpoides Hobbs, 1981 -- valid
  Procambarus tenuis Hobbs, 1950 -- valid
  Procambarus texanus Hobbs, 1971 -- valid -- Bastrop crayfish
  Procambarus troglodytes (Le Conte, 1856) -- valid
  Procambarus truculentus Hobbs, 1954 -- valid
  Procambarus tulanei Penn, 1953 -- valid
  Procambarus verrucosus Hobbs, 1952 -- valid
  Procambarus versutus (Hagen, 1870) -- valid
  Procambarus viaeviridis (Faxon, 1914) -- valid -- vernal crayfish
  Procambarus vioscai Penn, 1946 -- valid
  Procambarus youngi Hobbs, 1942 -- valid -- Florida longbeak crayfish
  Processa bermudensis (Rankin, 1900) -- valid -- Bermuda night shrimp
  Processa fimbriata Manning and Chace, 1971 -- valid -- grass night shrimp
  Processa guyanae Holthuis, 1959 -- valid
  Processa hemphilli Manning and Chace, 1971 -- valid
  Processa profunda Manning and Chace, 1971 -- valid
  Processa riveroi Manning and Chace, 1971 -- valid
  Processa vicina Manning and Chace, 1971 -- valid
  Psalidopodidae Wood Mason & Alcock, 1892 -- valid -- scissorfoot shrimps
  Psalidopus barbouri Chace, 1939 -- valid
  Pseudocheles chacei Kensley, 1983 -- valid
  Pseudocoutierea antillensis Chace, 1972 -- valid
  Pseudocoutierea elegans Holthuis, 1951 -- valid
  Pseudocryptochirus hypostegus Shaw and Hopkins, 1977 -- invalid
  Pseudomedaeus agassizii (A. Milne-Edwards, 1880) -- valid -- rough rubble crab
  Pseudomedaeus distinctus (M. J. Rathbun, 1898) -- valid -- armed rubble crab
  Pseudorhombila quadridentata (Latreille, 1828) -- valid -- flecked squareback crab
  Pugettia dalli M. J. Rathbun, 1893 -- valid -- spined kelp crab
  Pugettia gracilis Dana, 1851 -- valid -- graceful kelp crab
  Pugettia producta (J. W. Randall, 1840) -- valid -- northern kelp crab
  Pugettia richii Dana, 1851 -- valid -- cryptic kelp crab
  Pugettia venetiae M. J. Rathbun, 1924 -- valid -- Venice kelp crab
  Pylocheles scutata Ortmann, 1892 -- invalid
  Pylopaguropsis atlantica Wass, 1963 -- valid
  Pylopagurus A. Milne-Edwards and Bouvier, 1891 -- valid
  Pylopagurus discoidalis (A. Milne-Edwards, 1880) -- valid
  Pylopagurus holmesi Schmitt, 1921 -- valid
  Pyromaia cuspidata Stimpson, 1871 -- valid -- dartnose pear crab
  Pyromaia tuberculata (Lockington, 1877) -- valid -- tuberculate pear crab
  Randallia bulligera M. J. Rathbun, 1898 -- valid
  Randallia ornata (J. W. Randall, 1840) -- valid -- globose sand crab
  Ranilia constricta (A. Milne-Edwards, 1880) -- valid -- sicklefoot frog crab
  Ranilia muricata H. Milne Edwards, 1837 -- valid -- muricate frog crab
  Raninidae De Haan, 1839 -- valid -- frog crabs
  Raninoides loevis (Latreille, 1825) -- valid -- furrowed frog crab
  Raninoides louisianensis M. J. Rathbun, 1933 -- valid -- Gulf frog crab
  Rhinolithodes wosnessenskii Brandt, 1848 -- valid -- rhinoceros crab
  Rhithropanopeus harrisii (Gould, 1841) -- valid -- estuarine mud crab, Harris mud crab
  Rhodochirus McLaughlin, 1981 -- valid
  Rhodochirus rosaceus (A. Milne-Edwards and Bouvier, 1893) -- valid -- stellate hermit
  Rhynchocinetes rigens Gordon, 1936 -- invalid -- mechanical shrimp
  Rhynocrangon alata (M. J. Rathbun, 1902) -- valid -- saddleback shrimp
  Rhynocrangon sharpi (Montrouzier, 1861) -- valid
  Robertsella mystica Guinot, 1969 -- valid -- spiked bathyal crab
  Rochinia crassa (A. Milne-Edwards, 1879) -- valid -- inflated spiny crab
  Rochinia hystrix (Stimpson, 1871) -- valid -- quillback spiny crab
  Rochinia tanneri (S. I. Smith, 1883) -- valid -- thorned spiny crab
  Rochinia umbonata (Stimpson, 1871) -- valid -- knobbed spiny crab
  Sabinea hystrix (A. Milne-Edwards, 1881) -- valid
  Sabinea sarsii S. I. Smith, 1879 -- valid -- Sars shrimp
  Sabinea septemcarinata (Sabine, 1824) -- valid -- sevenline shrimp
  Sabinea tridentata Pequegnat, 1970 -- valid
  Salmoneus cavicola Felder and Manning, 1986 -- valid
  Sclerocrangon boreas (Phipps, 1774) -- valid -- sculptured shrimp
  Sclerocrangon ferox (G. O. Sars, 1877) -- valid
  Scleroplax granulata M. J. Rathbun, 1893 -- valid -- burrow pea crab
  Scyllaridae Latreille, 1825 -- valid -- slipper lobsters
  Scyllarides aequinoctialis (Lund, 1793) -- valid -- Spanish slipper lobster
  Scyllarides nodifer (Stimpson, 1866) -- valid -- ridged slipper lobster
  Scyllarus americanus (S. I. Smith, 1869) -- valid -- American slipper lobster
  Scyllarus chacei Holthuis, 1960 -- valid -- Chace slipper lobster
  Scyllarus depressus (S. I. Smith, 1881) -- valid -- scaled slipper lobster
  Scyra acutifrons Dana, 1851 -- valid -- sharpnose crab
  Sesarma benedicti M. J. Rathbun, 1897 -- invalid -- fatfinger marsh crab
  Sesarma cinereum (Bosc, 1802) -- invalid -- squareback marsh crab
  Sesarma curacaoense De Man, 1892 -- valid -- mangrove marsh crab
  Sesarma miersii M. J. Rathbun, 1897 -- invalid
  Sesarma reticulatum (Say, 1817) -- valid -- heavy marsh crab, purple marsh crab
  Sesarma ricordi H. Milne Edwards, 1853 -- invalid -- humic marsh crab
  Sicyonia brevirostris Stimpson, 1871 -- valid -- boucot ovetgernade, brown rock shrimp, camarón conchiduro, camarón de piedra, camarón de roca, hardback shrimp, rock shrimp
  Sicyonia burkenroadi Cobb, 1971 -- valid -- spiny rock shrimp
  Sicyonia dorsalis Kingsley, 1878 -- valid -- boucot nain, camarão de pedra, camarão muído, camaróncito de piedra, lesser rock shrimp, rock shrimp
  Sicyonia ingentis (Burkenroad, 1938) -- valid -- boucot du Pacifique, cacahuete, camarón de piedra, camarón de piedra del Pacífico, Japanese shrimp, Pacific rock shrimp, ridgeback prawn, ridgeback rock shrimp, rock shrimp
  Sicyonia stimpsoni Bouvier, 1905 -- valid -- boucot ocellé, camarón ocelado, eyespot rock shrimp
  Sicyonia typica (Boeck, 1864) -- valid -- boucot roitelet, camarón reyecito, kinglet rock shrimp
  Sicyoniidae Ortmann, 1898 -- valid -- rock shrimps
  Solenocera atlantidis Burkenroad, 1939 -- valid -- dwarf humpback shrimp
  Solenocera necopina Burkenroad, 1939 -- valid -- deepwater humpback shrimp
  Solenocera vioscai Burkenroad, 1934 -- valid -- humpback shrimp
  Solenoceridae Wood-Mason, 1891 -- valid -- solenocerid shrimps
  Solenolambrus decemspinosus M. J. Rathbun, 1894 -- valid
  Solenolambrus tenellus Stimpson, 1871 -- valid
  Solenolambrus typicus Stimpson, 1871 -- valid
  Solenopagurus lineatus (Wass, 1963) -- valid
  Sotoplax robertsi Guinot, 1984 -- valid
  Speloeophorus elevatus M. J. Rathbun, 1898 -- valid -- bighole clutch crab
  Speloeophorus nodosus (T. Bell, 1855) -- valid -- twohole clutch crab
  Speloeophorus pontifer (Stimpson, 1871) -- valid -- smallhole clutch crab
  Speocarcinus carolinensis Stimpson, 1859 -- valid -- Carolinian squareback crab
  Speocarcinus lobatus Guinot, 1969 -- valid -- Gulf squareback crab
  Speocarcinus monotuberculatus Felder and Rabalais, 1986 -- valid
  Sphenocarcinus corrosus A. Milne-Edwards, 1878 -- valid -- eroded vase crab
  Spirontocaris affinis (Owen, 1866) -- valid
  Spirontocaris arcuata M. J. Rathbun, 1902 -- valid -- Rathbun blade shrimp
  Spirontocaris dalli M. J. Rathbun, 1902 -- valid -- Dall blade shrimp
  Spirontocaris holmesi Holthuis, 1947 -- valid -- slender blade shrimp
  Spirontocaris lamellicornis (Dana, 1852) -- valid
  Spirontocaris liljeborgii (Danielssen, 1859) -- invalid -- friendly blade shrimp, friendly spine shrimp
  Spirontocaris murdochi M. J. Rathbun, 1902 -- valid -- Murdoch blade shrimp
  Spirontocaris ochotensis (Brandt, 1851) -- valid -- oval blade shrimp
  Spirontocaris phippsii (Krøyer, 1841) -- valid -- punctate blade shrimp
  Spirontocaris prionota (Stimpson, 1864) -- valid -- deep blade shrimp
  Spirontocaris sica M. J. Rathbun, 1902 -- valid -- offshore blade shrimp
  Spirontocaris snyderi M. J. Rathbun, 1902 -- valid -- Snyder blade shrimp
  Spirontocaris spinus (Sowerby, 1805) -- valid -- parrot shrimp
  Spirontocaris truncata M. J. Rathbun, 1902 -- valid -- blunt blade shrimp
  Stenocionops furcata (Olivier, 1791) -- invalid -- furcate spider crab
  Stenocionops furcata coelata (A. Milne-Edwards, 1878) -- invalid
  Stenocionops furcatus (Olivier, 1791) -- valid -- furcate spider crab
  Stenocionops furcatus furcatus (Olivier, 1791) -- valid
  Stenocionops spinimanus (M. J. Rathbun, 1892) -- valid -- prickly spider crab
  Stenocionops spinosissimus (de Saussure, 1857) -- valid -- tenspine spider crab
  Stenopus hispidus (Olivier, 1811) -- valid -- banded coral shrimp, redbanded coral shrimp, 'opae-huna
  Stenopus scutellatus Rankin, 1898 -- valid -- golden coral shrimp, yellowbanded coral shrimp
  Stenorhynchus seticornis (J. F. W. Herbst, 1788) -- valid -- yellowline arrow crab
  Stereomastis nana (S. I. Smith, 1884) -- invalid
  Stereomastis sculpta (S. I. Smith, 1880) -- invalid
  Stilbomastax margaritifera (Monod, 1939) -- valid
  Stylodactylus licinus Chace, 1983 -- valid
  Stylopandalus richardi (Coutière, 1905) -- valid
  Symethis variolosa (J. C. Fabricius, 1793) -- valid -- eroded frog crab
  Synalpheus agelas L. H. Pequegnat and Heard, 1979 -- valid
  Synalpheus apioceros Coutière, 1909 -- valid
  Synalpheus bousfieldi Chace, 1972 -- valid
  Synalpheus brevicarpus (Herrick, 1891) -- valid
  Synalpheus brooksi Coutière, 1909 -- valid
  Synalpheus disparodigitus Armstrong, 1949 -- valid
  Synalpheus fritzmuelleri Coutière, 1909 -- valid -- speckled snapping shrimp
  Synalpheus goodei Coutière, 1909 -- valid
  Synalpheus heardi Dardeau, 1984 -- valid
  Synalpheus hemphilli Coutière, 1909 -- valid
  Synalpheus herricki Coutière, 1909 -- valid
  Synalpheus lockingtoni Coutière, 1909 -- valid -- littoral pistol shrimp
  Synalpheus longicarpus (Herrick, 1891) -- valid
  Synalpheus macclendoni Coutière, 1910 -- valid
  Synalpheus minus (Say, 1818) -- valid -- minor snapping shrimp
  Synalpheus pandionis Coutière, 1909 -- valid -- turtlegrass snapping shrimp, turtlegrass snappping shrimp
  Synalpheus paraneptunus Coutière, 1909 -- valid
  Synalpheus pectiniger Coutière, 1907 -- valid -- loggerhead snapping shrimp
  Synalpheus rathbunae Coutière, 1909 -- valid
  Synalpheus sanctithomae Coutière, 1909 -- valid
  Synalpheus scaphoceris Coutière, 1910 -- valid
  Synalpheus townsendi Coutière, 1909 -- valid -- Townsend snapping shrimp
  Synaxiidae -- invalid
  Syncaris pacifica (Holmes, 1895) -- valid -- California freshwater shrimp
  Syncaris pasadenae (Kingsley, 1896) -- valid -- Pasadena freshwater shrimp, Pasadena shrimp
  Systellaspis affinis (Faxon, 1896) -- valid
  Systellaspis braueri (Balss, 1914) -- valid -- Quayle spinytail
  Systellaspis cristata (Faxon, 1893) -- valid -- Krygier spinytail
  Systellaspis debilis (A. Milne-Edwards, 1881) -- valid
  Systellaspis pellucida (Filhol, 1885) -- valid
  Taliepus nuttallii (J. W. Randall, 1840) -- valid -- globose kelp crab
  Telmessus cheiragonus (Tilesius, 1812) -- valid -- helmet crab
  Tetraxanthus bidentatus (A. Milne-Edwards, 1880) -- valid -- cornered mud crab
  Tetraxanthus rathbunae Chace, 1939 -- valid -- inflated mud crab
  Thalassoplax angusta Guinot, 1969 -- valid -- narrow bathyal crab
  Thoe puella Stimpson, 1860 -- valid -- scarlet mime crab
  Thor amboinensis (De Man, 1888) -- valid -- squat anemone shrimp
  Thor dobkini Chace, 1972 -- valid -- squat grass shrimp
  Thor floridanus Kingsley, 1878 -- valid -- bryozoan shrimp
  Thor manningi Chace, 1972 -- valid -- Manning grass shrimp
  Thunor simus (Guerin-Meneville, 1855) -- valid
  Tomopaguropsis Alcock, 1905 -- valid
  Tomopaguropsis problematica (A. Milne-Edwards and Bouvier, 1893) -- valid
  Tomopagurus chacei (Wass, 1963) -- valid
  Tomopagurus cubensis (Wass, 1963) -- valid
  Tomopagurus rubropunctatus A. Milne-Edwards and Bouvier, 1893 -- valid
  Tozeuma carolinense Kingsley, 1878 -- valid -- arrow shrimp
  Tozeuma cornutum A. Milne-Edwards, 1881 -- valid
  Tozeuma serratum A. Milne-Edwards, 1881 -- valid -- serrate arrow shrimp
  Trachycaris restricta (A. Milne-Edwards, 1878) -- valid
  Trachypenaeus constrictus (Stimpson, 1871) -- invalid -- roughneck shrimp
  Trachypenaeus constrictus similis (S. I. Smith, 1885) -- invalid
  Trachypenaeus similis (S. I. Smith, 1885) -- invalid -- roughback shrimp, yellow roughneck shrimp
  Trapezioplax tridentata (A. Milne-Edwards, 1880) -- valid -- spined broadface crab
  Trichopeltarion nobile A. Milne-Edwards, 1880 -- valid -- velvet horse crab
  Troglocambarus maclanei Hobbs, 1942 -- valid -- spider cave crayfish
  Troglocarcinus corallicola Verrill, 1908 -- valid
  Tuleariocaris neglecta Chace, 1969 -- valid -- black urchin shrimp, black-urchin shrimp
  Tutankhamen cristatipes (A. Milne-Edwards, 1880) -- valid
  Tyche emarginata White, 1847 -- valid -- fourhorn crab
  Typton carneus Holthuis, 1951 -- valid
  Typton distinctus Chace, 1972 -- valid
  Typton gnathophylloides Holthuis, 1951 -- valid
  Typton prionurus Holthuis, 1951 -- valid
  Typton tortugae McClendon, 1911 -- valid -- pale sponge shrimp
  Typton vulcanus Holthuis, 1951 -- valid
  Uca burgersi Holthuis, 1967 -- valid -- saltpan fiddler
  Uca crenulata (Lockington, 1877) -- valid -- Mexican fiddler
  Uca leptodactyla M. J. Rathbun, 1898 -- valid -- marbled fiddler
  Uca longisignalis Salmon and Atsaides, 1968 -- valid -- Gulf marsh fiddler, tou-la-lou
  Uca marguerita Thurman, 1981 -- valid -- Olmec fiddler
  Uca minax (Le Conte, 1855) -- valid -- red-joint fiddler, redjointed fiddler
  Uca panacea Novak and Salmon, 1974 -- valid -- Gulf sand fiddler
  Uca pugilator (Bosc, 1802) -- valid -- Atlantic sand fiddler
  Uca pugnax (S. I. Smith, 1870) -- valid -- Atlantic marsh fiddler
  Uca rapax (S. I. Smith, 1870) -- valid -- mudflat fiddler
  Uca speciosa (Ives, 1891) -- valid -- longfinger fiddler
  Uca spinicarpa M. J. Rathbun, 1900 -- valid -- spined fiddler
  Uca subcylindrica (Stimpson, 1851) -- valid -- Laguna Madre fiddler
  Uca thayeri M. J. Rathbun, 1900 -- valid -- Atlantic mangrove fiddler, mangrove fiddler
  Uca vocator (J. F. W. Herbst, 1804) -- valid -- Atlantic hairback fiddler, hairback fiddler
  Ucides cordatus (Linnaeus, 1763) -- valid -- swamp ghost crab
  Uhlias limbatus Stimpson, 1871 -- valid -- eroded clutch crab
  Upogebia affinis (Say, 1818) -- valid -- coastal mud shrimp
  Upogebia lepta A. B. Williams, 1986 -- valid
  Upogebia macginitieorum A. B. Williams, 1986 -- valid
  Upogebia onychion A. B. Williams, 1986 -- valid
  Upogebia operculata Schmitt, 1924 -- invalid -- operculate mud shrimp
  Upogebia pugettensis (Dana, 1852) -- valid -- blue mud shrimp
  Uroptychus armatus (A. Milne-Edwards, 1880) -- valid
  Uroptychus brevis J. E. Benedict, 1902 -- valid
  Uroptychus nitidus (A. Milne-Edwards, 1880) -- valid
  Veleroniopsis kimallynae Gore, 1981 -- valid
  Willemoesia forceps A. Milne-Edwards, 1880 -- valid
  Xanthidae MacLeay, 1838 -- valid -- crabes de boue, mud crabs, pebble crabs, rubble crabs, xanthidés
  Xanthodius denticulatus (White, 1848) -- valid -- denticulate rubble crab
  Xiphopenaeus kroyeri (C. Heller, 1862) -- valid -- Atlantic seabob, camarón siete barbas, crevette seabob (de l'Atlantique), seabob
  Zygopa michaelis Holthuis, 1961 -- valid -- blind mole crab
   

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