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A new water snake from Mexico, with notes on anal plates and apical pits in Natrix and Thamnophis

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By: Conant, Roger,

Publication info: New York, N.Y, American Museum of Natural History, [1961]

Holding Institution: American Museum of Natural History Library

Subjects: 59.81,21C(72) Anatomy Classification Colubridae Garter snakes Identification Mexico Natrix valida thamnophisoides Nayarit Nerodia North America Reptiles Snakes