Colubridae — Advanced Snakes
Species I've seen:
Ahaetulla — Vine Snakes
Ahaetulla fasciolata
Speckle-headed Whip Snake
Ahaetulla nasuta
Green Vine Snake
Ahaetulla prasina
Oriental Whip Snake
Amphiesma — Keelbacks
Amphiesma stolatum
Buff Striped Keelback
Arizona — Glossy Snakes
Arizona elegans
Glossy Snake
Aspidura — Rough-sided Snakes
Aspidura desilvai
De Silva’s Rough-sided Snake
Aspidura guentheri
Guenther’s Rough-sided Snake
Aspidura trachyprocta
Common Rough-sided Snake
Boiga — Cat-eyed Snakes
Boiga barnesii
Barnes’s Cat Snake
Boiga ceylonensis
Sri Lanka Cat Snake
Boiga dendrophila
Yellow-ringed Cat Snake
Boiga drapiezii
Pale-spotted Cat Snake
Boiga forsteni
Forsten’s Cat Snake
Boiga irregularis
Eastern Brown Tree Snake
Boiga ranawanei
Ranawana’s Cat Snake
Boiga trigonota
Gamma Cat Snake
Calamaria — Reed Snakes
Calamaria schmidti
Schmidt’s Reed Snake
Cemophora — Scarletsnakes
Chironius — Whipsnakes
Chironius exoletus
Common Whipsnake
Chironius fuscus
Olive Whipsnake
Chrysopelea — Flying Tree Snakes
Chrysopelea taprobanica
Sri Lankan Flying Snake
Clelia — Mussuranas
Clelia clelia
Black Mussurana
Coelognathus — Southeast Asian Ratsnakes
Coelognathus helena
Trinket Snake
Coluber — North American Racers, Coachwhips, and Whipsnakes
Coluber constrictor
North American Racer
Crotaphopeltis — African Water Snakes
Crotaphopeltis hotamboeia
White-lipped Herald Snake
Dendrelaphis — Bronzebacks
Dendrelaphis caudolineatus
Gray Bronzeback
Dendrelaphis caudolineolatus
Striped Bronzeback
Dendrelaphis cyanochloris
Blue Bronzeback
Dendrelaphis pictus
Gmelin’s Bronzeback
Dendrelaphis punctulatus
Green Tree Snake
Dendrelaphis schokari
Schokar’s Bronzeback
Dendrelaphis tristis
Common Bronzeback
Dendrophidion — Forest Racers
Dendrophidion dendrophis
Tawny Forest Racer
Dipsadoboa — Tree Snakes
Dipsadoboa unicolor
Günther’s Green Tree Snake
Dispholidus — Boomslangs
Drymarchon — Indigo Snakes
Drymarchon corais
Yellow-tailed Indigo Snake
Drymarchon melanurus
Central American Indigo Snake
Drymoluber — Glossy Racers
Drymoluber dichrous
Common Glossy Racer
Erythrolamprus — Swamp Snakes
Erythrolamprus almadensis
Almaden Ground Snake
Erythrolamprus pygmaeus
Amazon Tropical Forest Snake
Erythrolamprus typhlus
Velvety Swamp Snake
Fowlea — Asiatic Water Snakes
Fowlea asperrima
Boulenger’s Keelback
Fowlea unicolor
Tikiri Keelback
Gonyosoma — Redtail Rat Snakes
Gonyosoma oxycephalum
Grey-tailed Racer
Gyalopion — Western Hook-nosed Snakes
Gyalopion quadrangulare
Thornscrub Hook-nosed Snake
Lampropeltis — Kingsnakes
Lampropeltis californiae
California Kingsnake
Lampropeltis calligaster
Prairie Kingsnake
Lampropeltis elapsoides
Scarlet Kingsnake
Lampropeltis gentilis
Western Milksnake
Lampropeltis getula
Eastern Kingsnake
Lampropeltis holbrooki
Speckled Kingsnake
Lampropeltis knoblochi
Madrean Mountain Kingsnake
Lampropeltis nigrita
Western Black Kingsnake
Lampropeltis splendida
Desert Kingsnake
Lampropeltis triangulum
Eastern Milksnake
Lampropeltis zonata
California Mountain Kingsnake
Lycodon — Wolf Snakes
Lycodon albofuscus
Slender Wolf Snake
Lycodon butleri
Butler’s Wolf Snake
Lycodon tristrigatus
Striped Dwarf Treesnake
Masticophis — Whipsnakes
Mastigodryas — Tropical Racers
Mastigodryas boddaerti
Boddaert’s Tropical Racer
Mastigodryas melanolomus
Salmon-bellied Racer
Natrix — Grass Snakes
Nerodia — North American Watersnakes
Nerodia clarkii
Saltmarsh Watersnake
Nerodia erythrogaster
Plain-bellied Watersnake
Nerodia fasciata
Southern Watersnake
Nerodia floridana
Florida Green Watersnake
Nerodia rhombifer
Diamond-backed Watersnake
Nerodia sipedon
Northern Watersnake
Nerodia taxispilota
Brown Watersnake
Oligodon — Kukri Snakes
Oligodon everetti
Jeweled Kukri Snake
Oligodon octolineatus
Striped Kukri Snake
Oligodon taeniolatus
Streaked Kukri Snake
Opheodrys — Greensnakes
Opheodrys aestivus
Rough Greensnake
Oxybelis — American Vinesnakes
Oxybelis aeneus
Brown Vinesnake
Pantherophis — North American Ratsnakes
Philothamnus — African Green Snakes
Philothamnus carinatus
Thirteen-scaled Green Snake
Phrynonax — Bird Snakes
Phrynonax poecilonotus
Common Bird Snake
Phyllorhynchus — Leaf-nosed Snakes
Phyllorhynchus browni
Saddled Leaf-nosed Snake
Phyllorhynchus decurtatus
Spotted Leaf-nosed Snake
Pituophis — Bullsnakes, Pinesnakes, and Gopher Snakes
Pliocercus — False Coral Snakes
Pliocercus euryzonus
Black Halloween Snake
Ptyas — Indian Rat Snakes
Ptyas fusca
White-bellied Rat Snake
Regina — Crayfish Snakes
Regina grahamii
Graham’s Crawfish Snake
Rhabdophis — Common Keelbacks
Rhabdophis ceylonensis
Sri Lankan Keelback
Rhinocheilus — Long-nosed Snakes
Rhinocheilus antonii
Mexican Long-nosed Snake
Rhinocheilus lecontei
Long-nosed Snake
Salvadora — Patch-nosed Snakes
Salvadora deserticola
Big Bend Patch-nosed Snake
Salvadora hexalepis
Western Patch-nosed Snake
Sonora — North American Groundsnakes
Sonora annulata
Resplendent Desert Shovel-nosed Snake
Sonora semiannulata
Groundsnake
Sonora straminea
Variable Sandsnake
Spilotes — Tropical Ratsnakes
Spilotes pullatus
Tropical Rat Snake
Storeria — North American Brownsnakes
Storeria dekayi
Dekay’s Brownsnake
Storeria victa
Florida Brownsnake
Tantilla — Black-headed, Crowned, and Flat-headed Snakes
Tantilla gracilis
Flat-headed Snake
Tantilla hobartsmithi
Smith’s Black-headed Snake
Tantilla planiceps
Western Black-headed Snake
Thamnophis — North American Gartersnakes
Thamnophis atratus
Aquatic Gartersnake
Thamnophis couchii
Sierra Gartersnake
Thamnophis cyrtopsis
Black-necked Gartersnake
Thamnophis elegans
Terrestrial Gartersnake
Thamnophis gigas
Giant Gartersnake
Thamnophis hammondii
Two-striped Gartersnake
Thamnophis marcianus
Checkered Gartersnake
Thamnophis ordinoides
Northwestern Gartersnake
Thamnophis proximus
Western Ribbonsnake
Thamnophis radix
Plains Gartersnake
Thamnophis saurita
Eastern Ribbonsnake
Thamnophis sirtalis
Common Gartersnake
Thamnophis validus
Mexican West Coast Gartersnake
Trimorphodon — Lyresnakes
Trimorphodon lambda
Sonoran Lyresnake
Trimorphodon lyrophanes
California Lyresnake
Trimorphodon tau
Mexican Lyresnake
Xenochrophis — Keelbacks
Xenochrophis maculatus
Large-eyed Water Snake
Xenochrophis trianguligerus
Triangle Keelback