dipsadine
dipsadid
natricine
natricid
crotaline
Heterodon
genus Heterodon
amphiesmal
atractaspidine
booid
thirst snake
acrochordoid
macrostomatan
ophidian
calamariid
colubriform
ungaliophiine
colubrine
cyclocorid
green snake
russellophiid
henophidian
colubroidean
atractaspidid
colubroid
acrochord
coffee snake
sand viper
black snake
pine snake
striped whipsnake
elapoid
marsh snake
genus Sonora
Sonora
aparallactine
large-headed water snake
xenodontine
Amphiumidae
diplodactylin
solenoglyph
Sonoran whipsnake
eastern indigo snake
pythonoid
lampropeltine
family Amphiumidae
Drymarchon corais couperi
Masticophis bilineatus
dipodoid
Natrix