(Serpentes: Colubridae) - compiled by Van Wallach
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Head drawings: genus
Hypsiglena(Serpentes: Colubridae) - compiled by Van Wallach
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 | Hypsiglena chlorophaea (from Holycross & Mitchell 2020) |
 | Hypsiglena ochrorhyncha (from Schmidt & Davis 1941) |
 | Hypsiglena ochrorhyncha (from Cope 1900) |
 | Hypsiglena ochrorhyncha (from Woodbury 1931) |
 | Hypsiglena torquata (from Canseco-Márquez & al. 2010) |
 | Hypsiglena torquata (from Stebbins 1954) |
 | Hypsiglena torquata (from Zeiner & al. 1988) |