Pulled my old copy of" Wright's Handbook of Snakes" published in 1957 and it states "In December, 1952, RA Edgren (1952) published his synopsis of Heterodon. He recognized a new form, H. n. gloydi.". There was no mention at all about gloydi's natural history in the "Handbook". Just a few notes on distribution. Do not know when gloydi was lumped with H. n. nasicus. Interesting, nasicus ranges from north central Illinois to Montana, south to Arizona. Must be doing something right to be so widespread. I do not know if Mexican hognoses is still a valid species, a subspecies of nasicus or just synonymy with nasicus.

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