CNAH: The Center for North American Herpetology

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JNAH/Contemporary
Herpetology

CNAH: North American Herpetofauna: Reptilia: Squamata (part)

Names that differ in any way from those published in the most most recent joint Society names list (see introduction) have their Standard English name shown in green.

Reptilia Laurenti, 1768 - Reptiles

Squamata (part) Oppel, 1811 - Snakes

Boidae Gray, 1842 - Boas

Charina Gray, 1849 - Rubber Boas

	C. bottae (Blainville, 1835) - Northern Rubber Boa
	C. umbratica Klauber, 1943 - Southern Rubber Boa

Lichanura Cope, 1861 - Rosy Boas

	L. orcutti (Stejneger 1889) - Northern Three-lined Boa
	L. trivirgata (Cope, 1861) - Rosy Boa

Colubridae Oppel, 1811 - Harmless Egg-Laying Snakes

Arizona Kennicott, 1859 - Glossy Snakes

A. elegans Kennicott, in Baird, 1859 - Glossy Snake

	A. e. arenicola Dixon, 1960 - Texas Glossy Snake
	A. e. candida Klauber, 1946 - Mohave Glossy Snake
	A. e. eburnata Klauber, 1946 - Desert Glossy Snake
	A. e. elegans Kennicott, in Baird, 1859 - Kansas Glossy Snake
	A. e. noctivaga Klauber, 1946 - Arizona Glossy Snake
	A. e. occidentalis Blanchard, 1924 - California Glossy Snake
	A. e. philipi Klauber, 1946 - Painted Desert Glossy Snake

Bogertophis Dowling & Price, 1988 - Desert Ratsnakes

B. rosaliae (Mocquard, 1899) - Baja California Ratsnake

B. subocularis (Brown, 1901) - Trans-Pecos Ratsnake

B. s. subocularis (Brown, 1901) - Northern Trans-Pecos Ratsnake

Cemophora Cope, 1860 - Scarletsnakes

	C. coccinea (Blumenbach, 1788) - Scarletsnake
	C. lineri Williams, Brown & Wilson, 1966 - Texas Scarletsnake

Coluber Linnaeus, 1758 - North American Racers, Coachwhips, and Whipsnakes

C. constrictor Linnaeus, 1758 - North American Racer

	C. c. anthicus (Cope, 1862) - Buttermilk Racer
	C. c. constrictor Linnaeus, 1758 - Northern Black Racer
	C. c. etheridgei Wilson, 1970 - Tan Racer
	C. c. flaviventris Say in James, 1822 - Eastern Yellow-bellied Racer
	C. c. foxii (Baird and Girard, 1853) - Blue Racer
	C. c. helvigularis Auffenberg, 1955 - Brown-chinned Racer
	C. c. latrunculus Wilson, 1970 - Black-masked Racer
	C. c. mormon Baird & Girard, 1852 - Western Yellow-bellied Racer
	C. c. oaxaca (Jan, 1863) - Mexican Racer
	C. c. paludicola Auffenberg & Babbitt, 1953 - Everglades Racer
	C. c. priapus Dunn & Wood, 1939 - Southern Black Racer

Drymarchon Fitzinger, 1843 - Indigo Snakes

D. couperi (Holbrook, 1842) - Eastern Indigo Snake

D. melanurus (Duméril, Bibron & Duméril, 1853) - Central American Indigo Snake

D. m. erebennus (Cope, 1860) - Texas Indigo Snake

Drymobius Fitzinger, 1843 - Neotropical Racers

D. margaritiferus (Schlegel, 1837) - Speckled Racer

D. m. margaritiferus (Schlegel, 1837) - Northern Speckled Racer

Ficimia Gray, 1849 - Eastern Hook-nosed Snakes

F. streckeri Taylor, 1931 - Tamaulipan Hook-nosed Snake

Gyalopion Cope, 1860 - Western Hook-nosed Snakes

	G. canum Cope, 1861 “1860” - Chihuahuan Hook-nosed Snake
	G. quadrangulare (Günther, 1893 in Salvin and Godman, 1885-1902) - Thornscrub Hook-nosed Snake

Lampropeltis Fitzinger, 1843 - Kingsnakes

L. alterna (Brown, 1901) - Gray-banded Kingsnake

L. annulata Kennicott, 1860 - Mexican Milksnake

L. californiae (Blainville, 1835) - California Kingsnake

L. calligaster (Harlan, 1827) - Prairie Kingsnake

L. elapsoides (Holbrook, 1838) - Scarlet Kingsnake

L. extenuata (Brown, 1890) - Short-tailed Kingsnake

L. gentilis (Baird & Girard, 1853) - Western Milksnake

L. getula (Linnaeus, 1766) - Eastern Kingsnake

L. holbrooki Stejneger, 1902 - Speckled Kingsnake

L. knoblochi (Taylor, 1940) - Knobloch’s Mountain Kingsnake

L. nigra (Yarrow, 1882) - Eastern Black Kingsnake

L. occipitolineata Price, 1987 - South Florida Mole Kingsnake

L. pyromelana (Cope, 1866) - Pyro Mountain Kingsnake

	L. p. infralabialis Tanner, 1953 - Utah Mountain Kingsnake
	L. p. pyromelana (Cope, 1867) - Arizona Mountain Kingsnake

L. rhombomaculata (Holbrook, 1840) - Mole Kingsnake

L. splendida (Baird & Girard, 1853) - Desert Kingsnake

L. triangulum (Lacépède, 1789) - Eastern Milksnake

L. zonata (Blainville, 1835) - California Mountain Kingsnake

Masticophis Baird & Girard, 1853 - Whipsnakes

M. bilineatus Jan, 1863 - Sonoran Whipsnake

M. flagellum (Shaw, 1802) - Coachwhip

	M. f. cingulum (Lowe & Woodin, 1954) - Sonoran Coachwhip
	M. f. flagellum Shaw, 1802 - Eastern Coachwhip
	M. f. lineatulus (Smith, 1941) - Lined Coachwhip
	M. f. piceus (Cope, 1892) - Red Racer
	M. f. ruddocki (Brattstrom & Warren, 1953) - San Joaquin Coachwhip
	M. f. testaceus Say in James, 1822 - Western Coachwhip

M. fuliginosus (Cope, 1895) - Baja California Coachwhip

M. lateralis (Hallowell, 1853) - Striped Racer

	M. l. euryxanthus (Riemer, 1954) - Alameda Striped Racer
	M. l. lateralis (Hallowell, 1853) - California Striped Racer

M. schotti (Baird & Girard, 1853) - Schott''s Whipsnake

	M. s. ruthveni (Ortenburger, 1923) - Ruthven''s Whipsnake
	M. s. schotti (Baird & Girard, 1853) - Schott’s Striped Whipsnake

M. taeniatus (Hallowell, 1852) - Striped Whipsnake

	M. t. girardi (Stejneger & Barbour, 1917) - Central Texas Whipsnake
	M. t. taeniatus (Hallowell, 1852) - Desert Striped Whipsnake

Opheodrys Fitzinger, 1843 - Greensnakes

O. aestivus (Linnaeus, 1766) - Rough Greensnake

	O. a. aestivus (Linnaeus, 1766) - Northern Rough Greensnake
	O. a. carinatus Grobman, 1984 - Florida Rough Greensnake

O. vernalis (Harlan, 1827) - Smooth Greensnake

Oxybelis Wagler, 1830 - American Vinesnakes

O. aeneus (Wagler, 1824) - Brown Vinesnake

Pantherophis Fitzinger, 1843 - North American Ratsnakes

	P. alleghaniensis (Holbrook, 1836) - Eastern Ratsnake
	P. bairdi (Yarrow, 1880) - Baird's Ratsnake
	P. emoryi (Baird & Girard, 1853) - Great Plains Ratsnake
	P. guttatus (Linnaeus, 1766) - Red Cornsnake
	P. obsoletus (Say in James, 1822) - Western Ratsnake
	P. ramspotti (Crother, White, Savage, Eckstut, Graham & Gardner, 2011) - Western Foxsnake
	P. slowinskii (Burbrink, 2002) - Slowinski's Cornsnake
	P. spiloides (Duméril, Bibron & Duméril, 1854) - Gray Ratsnake
	P. vulpinus (Baird & Girard, 1853) - Eastern Foxsnake

Phyllorhynchus Stejneger, 1890 - Leaf-nosed Snakes

	P. browni Stejneger, 1890 - Saddled Leaf-nosed Snake
	P. decurtatus (Cope, 1868) - Spotted Leaf-nosed Snake

Pituophis Holbrook, 1842 - Bullsnakes, Pinesnakes, and Gophersnakes

P. catenifer (Blainville, 1835) - Gophersnake

	P. c. affinis Hallowell, 1852 - Sonoran Gophersnake
	P. c. annectens Baird & Girard, 1853 - San Diego Gophersnake
	P. c. catenifer (Blainville, 1835) - Pacific Gophersnake
	P. c. deserticola Stejneger, 1893 - Great Basin Gophersnake
	P. c. pumilus Klauber, 1946 - Santa Cruz Gophersnake
	P. c. sayi (Schlegel, 1837) - Bullsnake

P. melanoleucus (Daudin, 1803) - Eastern Pinesnake

	P. m. lodingi Blanchard, 1924 - Black Pinesnake
	P. m. melanoleucus (Daudin, 1803) - Northern Pinesnake
	P. m. mugitus Barbour, 1921 - Florida Pinesnake

P. ruthveni Stull, 1929 - Louisiana Pinesnake

Rhinocheilus Baird & Girard, 1853 - Long-nosed Snakes

R. lecontei Baird & Girard, 1853 - Long-nosed Snake

Salvadora Baird & Girard, 1853 - Patch-nosed Snakes

S. grahamiae Baird & Girard, 1853 - Eastern Patch-nosed Snake

	S. g. grahamiae Baird & Girard, 1853 - Mountain Patch-nosed Snake
	S. g. lineata Schmidt, 1940 - Texas Patch-nosed Snake

S. hexalepis (Cope, 1866) - Western Patch-nosed Snake

	S. h. deserticola Schmidt, 1940 - Big Bend Patch-nosed Snake
	S. h. hexalepis (Cope, 1866) - Desert Patch-nosed Snake
	S. h. mojavensis Bogert, 1945 - Mohave Patch-nosed Snake
	S. h. virgultea Bogert, 1935 - Coast Patch-nosed Snake

Senticolis Dowling & Fries, 1987 - Green Ratsnakes

S. triaspis (Cope, 1866) - Green Ratsnake

S. t. intermedia (Boettger, 1883) - Northern Green Ratsnake

Sonora Baird & Girard, 1853 - North American Groundsnakes

S. annulata (Baird, 1859 “1858”) - Colorado Desert Shovel-nosed Snake

S. episcopa (Kennicott 1859) - Great Plains Groundsnake

S. occipitalis (Hallowell, 1854) - Western Shovel-nosed Snake

	S. o. klauberi (Stickel, 1941) - Tucson Shovel-nosed Snake
	S. o. occipitalis (Hallowell, 1854) - Mohave Shovel-nosed Snake
	S. o. talpina Klauber, 1951 - Nevada Shovel-nosed Snake

S. palarostris (Klauber, 1937) - Sonoran Shovel-nosed Snake

S. p. organica Klauber, 1951 - Organ Pipe Shovel-nosed Snake

S. semiannulata Baird & Girard, 1853 - Western Groundsnake

S. straminea (Cope, 1860) - Variable Sandsnake

S. taylori (Boulenger, 1894) - Southern Texas Groundsnake

Tantilla Baird & Girard, 1853 - Black-headed, Crowned, and Flat-headed Snakes

T. atriceps (Günther, 1895 in Salvin and Godman, 1885-1902) - Mexican Black-headed Snake

T. coronata Baird & Girard, 1853 - Southeastern Crowned Snake

T. cucullata Minton, 1956 - Trans-Pecos Black-headed Snake

T. gracilis Baird & Girard, 1853 - Flat-headed Snake

T. hobartsmithi Taylor, 1937 - Smith’s Black-headed Snake

T. nigriceps Kennicott, 1860 - Plains Black-headed Snake

T. oolitica Telford, 1966 - Rim Rock Crowned Snake

T. planiceps (Blainville, 1835) - Western Black-headed Snake

T. relicta Telford, 1966 - Florida Crowned Snake

	T. r. neilli Telford, 1966 - Central Florida Crowned Snake
	T. r. pamlica Telford, 1966 - Coastal Dunes Crowned Snake
	T. r. relicta Telford, 1966 - Peninsula Crowned Snake

T. wilcoxi Stejneger, 1902 - Chihuahuan Black-headed Snake

T. yaquia Smith, 1942 - Yaqui Black-headed Snake

Trimorphodon Cope, 1861 - Lyresnakes

	T. lambda Cope, 1886 - Sonoran Lyresnake
	T. lyrophanes (Cope, 1860) - California Lyresnake
	T. vilkinsonii Cope, 1886 - Texas Lyresnake

Crotalidae Oppel, 1811 - Pitvipers

Agkistrodon Palisot de Beauvois, 1799 - American Moccasins

	A. conanti Gloyd, 1969 - Florida Cottonmouth
	A. contortrix (Linnaeus, 1766) - Eastern Copperhead
	A. laticinctus (Gloyd & Conant, 1934) - Broad-banded Copperhead
	A. piscivorus (Lacépède, 1789) - Northern Cottonmouth

Crotalus Linnaeus, 1758 - Rattlesnakes

C. adamanteus Palisot de Beauvois, 1799 - Eastern Diamond-backed Rattlesnake

C. atrox Baird & Girard, 1853 - Western Diamond-backed Rattlesnake

C. cerastes Hallowell, 1854 - Sidewinder

	C. c. cerastes Hallowell, 1854 - Mohave Desert Sidewinder
	C. c. cercobombus Savage & Cliff, 1953 - Sonoran Sidewinder
	C. c. laterorepens Klauber, 1944 - Colorado Desert Sidewinder

C. cerberus (Coues, 1875) - Arizona Black Rattlesnake

C. horridus Linnaeus, 1758 - Timber Rattlesnake

C. lepidus (Kennicott, 1861) - Rock Rattlesnake

	C. l. klauberi Gloyd, 1936 - Banded Rock Rattlesnake
	C. l. lepidus (Kennicott, 1861) - Mottled Rock Rattlesnake

C. molossus Baird & Girard, 1853 - Black-tailed Rattlesnake

C. m. molossus Baird & Girard, 1853 - Northern Black-tailed Rattlesnake

C. oreganus Holbrook, 1840 - Western Rattlesnake

	C. o. abyssus Klauber, 1930 - Grand Canyon Rattlesnake
	C. o. concolor Woodbury, 1929 - Midget Faded Rattlesnake
	C. o. helleri Meek, 1905 - Southern Pacific Rattlesnake
	C. o. lutosus Klauber, 1930 - Great Basin Rattlesnake
	C. o. oreganus Holbrook, 1840 - Northern Pacific Rattlesnake

C. ornatus Hallowell 1954 - Eastern Black-tailed Rattlesnake

C. pricei Van Denburgh, 1895 - Twin-spotted Rattlesnake

C. p. pricei Van Denburgh, 1895 - Western Twin-spotted Rattlesnake

C. pyrrhus (Cope, 1867 “1866”) - Southwestern Speckled Rattlesnake

C. ruber Cope, 1892 - Red Diamond Rattlesnake

C. scutulatus (Kennicott, 1861) - Mohave Rattlesnake

C. s. scutulatus (Kennicott, 1861) - Northern Mohave Rattlesnake

C. stephensi Klauber, 1930 - Panamint Rattlesnake

C. tigris Kennicott, 1859 - Tiger Rattlesnake

C. viridis (Rafinesque, 1818) - Prairie Rattlesnake

C. willardi Meek, 1905 - Ridge-nosed Rattlesnake

	C. w. obscurus Harris, 1974 - New Mexico Ridge-nosed Rattlesnake
	C. w. willardi Meek, 1905 - Arizona Ridge-nosed Rattlesnake

Sistrurus Garman, 1883 - Massasauga and Pygmy Rattlesnakes

S. catenatus (Rafinesque, 1818) - Eastern Massasauga

S. miliarius (Linnaeus, 1766) - Pygmy Rattlesnake

	S. m. barbouri Gloyd, 1935 - Dusky Pygmy Rattlesnake
	S. m. miliarius (Linnaeus, 1766) - Carolina Pygmy Rattlesnake
	S. m. streckeri Gloyd, 1935 - Western Pygmy Rattlesnake

S. tergeminus (Say in James, 1822) - Western Massasauga

	S. t. edwardsii (Baird & Girard, 1853) - Desert Massasauga
	S. t. tergeminus (Say in James, 1822) - Prairie Massasauga

Dipsadidae Bonaparte, 1838 - Rear-Fanged Snakes

Carphophis Gervais, 1843 - North American Wormsnakes

C. amoenus (Say, 1825) - Common Wormsnake

	C. a. amoenus (Say, 1825) - Eastern Wormsnake
	C. a. helenae (Kennicott, 1859) - Midwestern Wormsnake

C. vermis (Kennicott, 1859) - Western Wormsnake

Coniophanes Hallowell, 1860 - Black-striped Snakes

C. imperialis (Baird, 1859) - Regal Black-striped Snake

C. i. imperialis (Baird, 1859) - Tamaulipan Black-striped Snake

Contia Baird & Girard, 1853 - Sharp-tailed Snakes

	C. longicauda Feldman & Hoyer, 2010 - Forest Sharp-tailed Snake
	C. tenuis (Baird & Girard, 1852) - Common Sharp-tailed Snake

Diadophis Baird & Girard, 1853 - Ring-necked Snakes

D. punctatus (Linnaeus, 1766) - Ring-necked Snake

	D. p. acricus Paulson, 1968 - Key Ring-necked Snake
	D. p. amabilis Baird & Girard, 1853 - Pacific Ring-necked Snake
	D. p. arnyi Kennicott, 1859 - Prairie Ring-necked Snake
	D. p. edwardsii (Merrem, 1820) - Northern Ring-necked Snake
	D. p. modestus Bocourt, 1866 - San Bernardino Ring-necked Snake
	D. p. occidentalis Blanchard, 1923 - Northwestern Ring-necked Snake
	D. p. pulchellus Baird & Girard, 1853 - Coral-bellied Ring-necked Snake
	D. p. punctatus (Linnaeus, 1766) - Southern Ring-necked Snake
	D. p. regalis Baird & Girard, 1853 - Regal Ring-necked Snake
	D. p. similis Blanchard, 1923 - San Diego Ring-necked Snake
	D. p. stictogenys Cope, 1860 - Mississippi Ring-necked Snake
	D. p. vandenburgii Blanchard, 1923 - Monterey Ring-necked Snake

Farancia Gray, 1842 - Mudsnakes and Rainbow Snakes

F. abacura (Holbrook, 1836) - Red-bellied Mudsnake

	F. a. abacura (Holbrook, 1836) - Eastern Mudsnake
	F. a. reinwardtii Schlegel, 1837 - Western Mudsnake

F. erytrogramma (Palisot de Beauvois in Sonnini and Latreille, 1801) - Rainbow Snake

	F. e. erytrogramma (Palisot de Beauvois in Sonnini and Latreille, 1801) - Common Rainbow Snake
	F. e. seminola Neill, 1964 - Southern Florida Rainbow Snake

Heterodon Latreille, 1801 - North American Hog-nosed Snakes

	H. gloydi Edgren, 1952 - Dusty Hog-nosed Snake
	H. kennerlyi Kennicott, 1860 - Mexican Hog-nosed Snake
	H. nasicus Baird & Girard, 1852 - Plains Hog-nosed Snake
	H. platirhinos Latreille, 1801 - Eastern Hog-nosed Snake
	H. simus (Linnaeus, 1766) - Southern Hog-nosed Snake

Hypsiglena Cope, 1860 - North American Nightsnakes

H. chlorophaea Cope, 1860 - Desert Nightsnake

	H. c. chlorophaea Cope, 1860 - Sonoran Nightsnake
	H. c. deserticola (Tanner, 1944) - Northern Desert Nightsnake
	H. c. loreala (Tanner, 1944) - Mesa Verde Nightsnake

H. jani (Dugès, 1865) - Chihuahuan Nightsnake

H. j. texana (Stejneger, 1893) - Texas Nightsnake

H. ochrorhyncha Cope, 1860 - Coast Nightsnake

	H. o. klauberi Tanner, 1944 - San Diego Nightsnake
	H. o. klauberi Tanner, 1944 - San Diego Nightsnake
	H. o. nuchalata (Tanner, 1943) - California Nightsnake
	H. o. nuchalata (Tanner, 1943) - California Nightsnake

Leptodeira Fitzinger, 1843 - Cat-eyed Snakes

L. septentrionalis (Kennicott, in Baird, 1859) - Northern Cat-eyed Snake

Rhadinaea Cope, 1863 - Littersnakes

R. flavilata (Cope, 1871) - Pine Woods Littersnake

Elapidae Boie, 1827 - Coral Snakes, Cobras & Kraits

Micruroides Schmidt, 1928 - Sonoran Coralsnakes

M. euryxanthus (Kennicott, 1860) - Sonoran Coralsnake

M. e. euryxanthus (Kennicott, 1860) - Arizona Coralsnake

Micrurus Wagler, 1824 - American Coralsnakes

M. fulvius (Linnaeus, 1766) - Harlequin Coralsnake

M. tener (Baird & Girard, 1853) - Texas Coralsnake

M. t. tener (Baird & Girard, 1853) - Texas Gulf-Coast Coralsnake

Hydrophiidae Fitzinger, 1843 - Sea Snakes & Allies

Pelamis Daudin, 1803 - Yellow-bellied Seasnakes

P. platura (Linnaeus, 1766) - Yellow-bellied Seasnake

Leptotyphlopidae Stejneger, 1891 - Threadsnakes

Rena Baird & Girard, 1853 - Threadsnakes

R. dissectus (Cope, 1896) - New Mexico Threadsnake

R. dulcis Baird & Girard, 1853 - Texas Threadsnake

	R. d. dulcis (Baird and Girard, 1853) - Plains Threadsnake
	R. d. rubellum (Garman, 1884) - South Texas Threadsnake

R. humilis Baird & Girard, 1853 - Western Threadsnake

	R. h. cahuilae (Klauber, 1931) - Desert Threadsnake
	R. h. humilis Baird & Girard, 1853 - Southwestern Threadsnake
	R. h. segregus (Klauber, 1939) - Trans-Pecos Threadsnake
	R. h. utahensis (Tanner, 1938) - Utah Threadsnake

Natricidae Bonaparte, 1838 - Harmless Live-Bearing Snakes

Clonophis Cope, 1889 - Kirtland's Snakes

C. kirtlandii (Kennicott, 1856) - Kirtland's Snake

Haldea Baird and Girard, 1853 - Rough Earthsnakes

H. striatula (Linnaeus, 1766) - Rough Earthsnake

Liodytes (Cope, 1885) - Swampsnakes

L. alleni (Garman, 1874) - Striped Swampsnake

L. pygaea (Cope, 1871) - Black Swampsnake

	L. p. cyclas Dowling, 1950 - Southern Florida Swampsnake
	L. p. paludis Dowling, 1950 - Carolina Swampsnake
	L. p. pygaea (Cope, 1871) - Northern Florida Swampsnake

L. rigida (Say, 1825) - Glossy Swampsnake

	L. r. deltae (Huheey, 1959) - Delta Swampsnake
	L. r. rigida (Say, 1825) - Eastern Glossy Swampsnake
	L. r. sinicola (Huheey, 1959) - Gulf Swampsnake

Nerodia Baird & Girard, 1853 - North American Watersnakes

N. clarkii (Baird & Girard, 1853) - Saltmarsh Watersnake

	N. c. clarkii (Baird & Girard, 1853) - Gulf Saltmarsh Watersnake
	N. c. compressicauda Kennicott, 1860 - Mangrove Saltmarsh Watersnake
	N. c. taeniata (Cope, 1895) - Atlantic Saltmarsh Watersnake

N. cyclopion (Duméril, Bibron & Duméril, 1854) - Mississippi Green Watersnake

N. erythrogaster (Forster, 1771) - Plain-bellied Watersnake

N. fasciata (Linnaeus, 1766) - Southern Watersnake

	N. f. confluens (Blanchard, 1923) - Broad-banded Watersnake
	N. f. fasciata (Linnaeus, 1766) - Banded Watersnake
	N. f. pictiventris (Cope, 1895) - Florida Watersnake

N. floridana (Goff, 1936) - Florida Green Watersnake

N. harteri (Trapido, 1941) - Brazos River Watersnake

N. paucimaculata (Tinkle & Conant, 1961) - Concho Watersnake

N. rhombifer (Hallowell, 1852) - Diamond-backed Watersnake

N. r. rhombifer (Hallowell, 1852) - Northern Diamond-backed Watersnake

N. sipedon (Linnaeus, 1758) - Common Watersnake

	N. s. insularum (Conant & Clay, 1937) - Lake Erie Watersnake
	N. s. pleuralis (Cope, 1892) - Midland Watersnake
	N. s. sipedon (Linnaeus, 1758) - Northern Watersnake
	N. s. williamengelsi (Conant & Lazell, 1973) - Carolina Watersnake

N. taxispilota (Holbrook, 1838) - Brown Watersnake

Regina Baird & Girard, 1853 - Crayfish Snakes

	R. grahamii Baird & Girard, 1853 - Graham's Crayfish Snake
	R. septemvittata (Say, 1825) - Queensnake

Storeria Baird & Girard, 1853 - North American Brownsnakes

S. dekayi (Holbrook, 1836) - Dekay’s Brownsnake

	S. d. dekayi (Holbrook, 1836) - Northern Brownsnake
	S. d. limnetes Anderson, 1961 - Marsh Brownsnake
	S. d. texana Trapido, 1944 - Texas Brownsnake
	S. d. wrightorum Trapido, 1944 - Midland Brownsnake

S. occipitomaculata (Storer, 1839) - Red-bellied Snake

	S. o. obscura Trapido, 1944 - Florida Red-bellied Snake
	S. o. occipitomaculata (Storer, 1839) - Northern Red-bellied Snake
	S. o. pahasapae Smith, 1963 - Black Hills Red-bellied Snake

S. victa Hay, 1892 - Florida Brownsnake

Thamnophis Fitzinger, 1843 - North American Gartersnakes

T. atratus (Kennicott, 1860) - Aquatic Gartersnake

	T. a. atratus (Kennicott, 1860) - Santa Cruz Gartersnake
	T. a. hydrophilus Fitch, 1936 - Oregon Gartersnake
	T. a. zaxanthus Boundy, 1999 - Diablo Range Gartersnake

T. brachystoma (Cope, 1892) - Short-headed Gartersnake

T. butleri (Cope, 1889) - Butler's Gartersnake

T. couchii (Kennicott, 1859) - Sierra Gartersnake

T. cyrtopsis (Kennicott, 1860) - Black-necked Gartersnake

	T. c. cyrtopsis (Kennicott, 1860) - Western Black-necked Gartersnake
	T. c. ocellatus (Cope, 1880) - Eastern Black-necked Gartersnake

T. elegans (Baird & Girard, 1853) - Terrestrial Gartersnake

	T. e. elegans (Baird & Girard, 1853) - Mountain Gartersnake
	T. e. terrestris Fox, 1951 - Coast Gartersnake
	T. e. vagrans (Baird & Girard, 1853) - Wandering Gartersnake

T. eques (Reuss, 1834) - Mexican Gartersnake

T. e. megalops (Kennicott, 1860) - Brown Gartersnake

T. gigas Fitch, 1940 - Giant Gartersnake

T. hammondii (Kennicott, 1860) - Two-striped Gartersnake

T. marcianus (Baird & Girard, 1853) - Checkered Gartersnake

T. m. marcianus (Baird & Girard, 1853) - Marcy's Checkered Gartersnake

T. ordinoides (Baird & Girard, 1852) - Northwestern Gartersnake

T. proximus (Say in James, 1822) - Western Ribbonsnake

	T. p. diabolicus Rossman, 1963 - Arid Land Ribbonsnake
	T. p. orarius Rossman, 1963 - Gulf Coast Ribbonsnake
	T. p. proximus (Say in James, 1822) - Orange-striped Ribbonsnake
	T. p. rubrilineatus Rossman, 1963 - Red-striped Ribbonsnake

T. radix (Baird & Girard, 1853) - Plains Gartersnake

T. rufipunctatus (Cope, 1875) - Narrow-headed Gartersnake

T. sauritus (Linnaeus, 1766) - Eastern Ribbonsnake

	T. s. nitae Rossman, 1963 - Blue-striped Ribbonsnake
	T. s. sackenii (Kennicott, 1859) - Peninsula Ribbonsnake
	T. s. sauritus (Linnaeus, 1766) - Common Ribbonsnake
	T. s. septentrionalis Rossman, 1963 - Northern Ribbonsnake

T. sirtalis (Linnaeus, 1758) - Common Gartersnake

	T. s. annectens Brown, 1950 - Texas Gartersnake
	T. s. concinnus (Hallowell, 1852) - Red-spotted Gartersnake
	T. s. dorsalis (Baird & Girard, 1853) - New Mexico Gartersnake
	T. s. fitchi Fox, 1951 - Valley Gartersnake
	T. s. infernalis (Blainville, 1835) - California Red-sided Gartersnake
	T. s. pallidulus Allen, 1899 - Maritime Gartersnake
	T. s. parietalis (Say in James, 1822) - Red-sided Gartersnake
	T. s. pickeringii (Baird & Girard, 1853) - Puget Sound Gartersnake
	T. s. semifasciatus Cope, 1892 - Chicago Gartersnake
	T. s. similis Rossman, 1965 - Blue-striped Gartersnake
	T. s. sirtalis (Linnaeus, 1758) - Eastern Gartersnake
	T. s. tetrataenia (Cope 1875) - San Francisco Gartersnake

Tropidoclonion Cope, 1860 - Lined Snakes

T. lineatum (Hallowell, 1856) - Lined Snake

Virginia Baird & Girard, 1853 - North American Earthsnakes

V. valeriae Baird & Girard, 1853 - Smooth Earthsnake

	V. v. elegans Kennicott, 1859 - Western Smooth Earthsnake
	V. v. pulchra (Richmond, 1954) - Mountain Earthsnake
	V. v. valeriae Baird & Girard, 1853 - Eastern Smooth Earthsnake