Classification
-
Hypsiglena - North American Nightsnakes
- Hypsiglena affinis - Boulenger's Nightsnake
- Hypsiglena chlorophaea - Desert Nightsnake
- Hypsiglena jani - Chihuahuan Nightsnake
- Hypsiglena ochrorhyncha - Coast Nightsnake
- Hypsiglena tanzeri - Tanzer's Nightsnake
- Hypsiglena torquata - Collar Nightsnake
