Some good maps there, Doug - however, I am more in favor of the maps in Dixon's and Werler's "Texas Snakes" books (2000 and 2005) - which puts lindheimeri only ranging as far south as southern Nueces or maybe into the very northern tip of Kleberg Counties in Texas. This is well north of where all of the maps you posted have them ranging to. I have found lots of lindheimeri in Nueces County, but have never seen one south of southwestern Nueces...

Pantherophis bairdi is a different story and definitely ranges well into Mexico - and I still consider bairdi to be part of the Pantherophis obsoletus complex, myself - I don't agree with the split...
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-Toby Brock
Southwestern Center for Herpetological Research

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