Agkistrodon - COPPERHEAD & COTTONMOUTH
(Crotalidae)

A. contortrix Copperhead
A. piscivorus Cottonmouth

Arizona GLOSSY SNAKES
(Colubridae)

A. elegans Eastern Glossy Snake
A. occidentalis Western Glossy Snake

Bogertophis Desert Rat Snakes
(Colubridae)

B. subocularis Trans-Pecos Rat Snake

Carphophis WORM SNAKES
(Dipsadidae)

C. amoenus Worm Snake

Cemophora SCARLET SNAKE
(Colubridae)

C. coccinea Scarlet Snake

Charina Rubber Boas
(Boidae)

Chilomeniscus SAND SNAKES
(Colubridae)

C. cinctus Banded Sand Snake

Chionactis SHOVELNOSE SNAKES
(Colubridae)

C. occipitalis Western Shovelnose Snake
C. palarostris Sonoran Shovelnose Snake

Clonophis KIRTLAND'S SNAKE
(Natricidae)

C. kirtlandii Kirtland's Snake

Coluber RACERS
(Colubridae)

Coniophanes BLACK-STRIPED SNAKES
(Dipsadidae)

C. imperialis Black-striped Snake

Contia SHARPTAIL SNAKE
(Dipsadidae)

C. tenuis Sharptail Snake

Crotalus RATTLESNAKES
(Crotalidae)

C. adamanteus Eastern Diamondback Rattlesnake
C. atrox Western Diamondback Rattlesnake
C. cerastes Sidewinder
C. lepidus Rock Rattlesnake
C. mitchellii Speckled Rattlesnake
C. molossus Blacktail Rattlesnake
C . pricei Twin-spotted Rattlesnake
C. ruber Red Diamond Rattlesnake
C. horridus Timber Rattlesnake
C. scutulatus Mojave Rattlesnake
C. tigris Tiger Rattlesnake
C. viridis Western Rattlesnake
C. willardi Ridgenose Rattlesnake

Diadophis RINGNECK SNAKE
(Dipsadidae)

D. punctatus Ringneck Snake

Drymarchon INDIGO SNAKES
(Colubridae)

D. corais Western Indigo Snake

D. couperi Eastern Indigo Snake

Drymobius SPECKLED RACERS
(Colubridae)

D. margaritiferus Speckled Racer

Elaphe RAT SNAKES & FOX SNAKES
(Colubridae)

E. alleghaniensis Eastern Rat Snake

E. bairdi Baird's Rat Snake

E. emoryi Great Plains Rat Snake

E. gloydi Eastern Fox Snake

E. guttata Corn Snake

E. obsoleta Western Rat Snake

E. slowinskii Slowinski's Corn Snake

E. spilodes Midland Rat Snake

E. vulpina Western Fox Snake

Farancia MUD SNAKE & RAINBOW SNAKE
(Xenodontidae)

F. abacura Mud Snake
F. erytrogramma Rainbow Snake

Ficimia MEXICAN HOOKNOSE SNAKES
(Colubridae)

F. streckeri Mexican Hook-nosed Snake

Gyalopion PLATEAU HOOKNOSE SNAKES
(Colubridae)

G. canum Western Hook-nosed Snake
G. quadrangularis Desert Hook-nosed Snake

Heterodon HOGNOSE SNAKES
(Xenodontidae)

H. nasicus Western Hognose Snake
H. platirhinos Eastern Hognose Snake
H. simus Southern Hognose Snake

Hypsiglena NIGHT SNAKES
(Dipsadidae)

H. torquata Night Snake

Lampropeltis KINGSNAKES & MILK SNAKE
(Colubridae)

L. alterna Gray-banded Kingsnake
L. calligaster Prairie Kingsnake
L. getula Common Kingsnake
L. pyromelana Sonoran Mountain Kingsnake
L. triangulum Milk Snake
L. zonata California Mountain Kingsnake

Leptodeira CAT-EYED SNAKES
(Dipsadidae)

L. septentrionalis Northern Cat-eyed Snake

Leptotyphlops BLIND SNAKES
(Leptotyphlopidae)

L. dulcis Texas Blind Snake
L. humilis Western Blind Snake

Liochlorophis Smooth Green Snakes
(Colubridae)

O. vernalis Smooth Green Snake

Masticophis WHIPSNAKES, STRIPED RACER, & COACHWHIP
(Colubridae)

M. bilineatus Sonoran Whipsnake
M. flagellum Coachwhip
M. lateralis Striped Racer
M. schotti Schott's Whipsnake
M. taeniatus Striped Whipsnake

Micruroides WESTERN CORAL SNAKE
(Elapidae)

M. euryxanthus Western Coral Snake

Micrurus EASTERN CORAL SNAKES
(Elapidae)

M. fulvius Eastern Coral Snake
M. tener Texas Coral Snake

Nerodia WATER & SALT MARSH SNAKES
(Natricidae)

N. clarkii Salt Marsh Snake
N. cyclopion Mississippi Green Water Snake
N. erythrogaster Plainbelly Water Snake
N. fasciata Southern Water Snake
N. floridana Florida Green Water Snake
N. harteri Brazos Water Snake
N. paucimaculata Concho Water Snake
N. rhombifer Diamondback Water Snake
N. sipedon Northern Water Snake
N. taxispilota Brown Water Snake

Opheodrys ROUGH GREEN SNAKE
(Colubridae)

O. aestivus Rough Green Snake

Oxybelis NEOTROPICAL VINE SNAKES
(Colubridae)

O. aeneus Mexican Vine Snake

Phyllorhynchus LEAFNOSE SNAKES
(Colubridae)

P. browni Saddled Leafnose Snake
P. decurtatus Spotted Leafnose Snake

Pituophis BULLSNAKE, PINE SNAKES, & GOPHER SNAKE
(Colubridae)

P. catenifer Gopher Snake

P. melanoleucus Eastern Pine Snake

P. ruthveni Louisiana Pine Snake

Regina CRAYFISH SNAKES
(Natricidae)

R. alleni Striped Crayfish Snake
R. grahamii Graham's Crayfish Snake
R. rigida Glossy Crayfish Snake
R. septemvittata Queen Snake

Rhadinaea PINE WOODS SNAKES
(Dipsadidae)

R. flavilata Pine Woods Snake

Rhinocheilus LONGNOSE SNAKE
(Colubridae)

R. lecontei Longnose Snake

Salvadora PATCH-NOSED SNAKES
(Colubridae)

S. deserticola (Big Bend Patch-nosed Snake)
S. grahamiae Mountain Patch-nosed Snake
S. hexalepis Western Patch-nosed Snake

Seminatrix SWAMP SNAKE
(Natricidae)

S. pygaea Black Swamp Snake

Senticolis GREEN RAT SNAKE
(Colubridae)

S. triaspis Green Rat Snake

Sistrurus PIGMY RATTLESNAKES & MASSASAUGA
(Crotalidae)

S. catenatus Massasauga
S. miliarius Pigmy Rattlesnake

Sonora GROUND SNAKES
(Colubridae)

S. semiannulata Ground Snake

Stilosoma SHORT-TAILED SNAKE
(Colubridae)

S. extenuatum Short-tailed Snake

Storeria REDBELLY SNAKES
(Natricidae)

S. dekayi Brown Snake
S. occipitomaculata Redbelly Snake

Tantilla BLACKHEAD, FLATHEAD, & CROWNED SNAKES
(Colubridae)

T. atriceps Mexican Blackhead Snake
T. coronata Southeastern Crowned Snake
T. cucullata Big Bend Blackhead Snake
T. gracilis Flathead Snake
T. hobartsmithi Southwestern Blackhead Snake
T. nigriceps Plains Blackhead Snake
T. oolitica Rim Rock Crowned Snake
T. planiceps Western Blackhead Snake
T. relicta Florida Crowned Snake
T. wilcoxi Chihuahuan Blackhead Snake
T. yaquia Yaqui Blackhead Snake

Thamnophis GARTER & RIBBON SNAKES
(Natricidae)

Trimorphodon LYRE SNAKES
(Colubridae)

T. biscutatus Lyre Snake

Tropidoclonion LINED SNAKE
(Natricidae)

T. lineatum Lined Snake

Virginia EARTH SNAKES
(Natricidae)

V. pulchra Mountain Earth Snake
V. striatula Rough Earth Snake
V. valeriae Smooth Earth Snake