Classification
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Hypsiglena - North American Nightsnakes
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Hypsiglena jani - Chihuahuan Nightsnake
- H. j. dunklei - Dunkle's Nightsnake
- H. j. jani - Jan's Nightsnake
- H. j. texana - Texas Nightsnake
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Hypsiglena jani - Chihuahuan Nightsnake
