Hey Rich,
First, thanks on the pics.
.
.
You said “Second, I am not so sure about giving all the credit to Mr. Carr”
Well, you’re right that Thomas Barbour and Harold Williams were co-authors, but I only chatted with A. Carr, so I mentioned him anecdotally.
.
(As an aside, the most interesting part of our conversation back then was really about his Stilosoma specimens that he kept on his desk.)
It was a different time before internet and email communications.
You only met a fellow herper rarely back then, so there was a camaraderie between all walks of herpers (academics, zoo folks, museum folks, hobbyists, and commercial folks.)
Information was traded freely amongst anyone who could spell reptile or amphibian. Carr was quick to share the info that to consistently keep Short Tails healthy, you needed a steady supply of Tantilla .
.
.
On your third point, your animal falls within my second category (a GH), which, I’ll be the first to say, is only my humble opinion and my own personal criteria, not to be taken as any taxonomic declaration. Its features are consistent with those animals found on the eastern or southern edge of the range map in Conant’s ’58 field guide, approaching Yellows. No hay problema.
.
.
Another thought… Just because an animal is from Levy County, does not mean it’s a Gulf Hammock… It’s a big county.
Although we often use counties for voucher locations, the inconsiderate snakes often show no regard for political maps and their ranges often follow habitat (often indicated by plant associations).
Much of the “Hammock region”, from west to east, starts at the Gulf of Mexico with Salt marshes, continues east to river or Gum swamp forests that meander through some xeric and mesic oak and Longleaf Pine areas.
The eastern edge of the Goethe State forest is a “demark” because it suddenly changes to a strip of highlands with an altitude increase of only a couple feet, but nevertheless dominated by Blackjack oak, Prickly pear, Pocket gophers, Fox Squirrels, Southern Pines, Coachwhips, Indigos, EDBs, etc.
“obsolete variant” Rat Snakes are not common here, but there are Live Oak islands as you go east (still in Levy Co,) and approach Marion County. These "island" Rats were considered intergrades between Yellows and GHs, when we thought GH was a subspecies.
.
That said if you examine a RS from the immediately southeast of Williston, FL, still in Levy County, they are unmistakably Yellow Rats.
.
.
This is a hobbyist forum where all posts are to be taken as opinion. Here’s where I’m speaking from.
I first traveled to the GH range to find GHs in 1971, hunting a few times with Frank Retes who worked for the Ross Allen Institute. From ’71 to ’77 I made hundreds of trips to all points of their Conant range map and beyond, examining hundreds of animals, alive and DOR.
Made many trips from ’82 and ’83 and again from ’96 to 2002, and hit the area about once or twice a year since 2003.
This would be a good GH habitat and location
.

.
if it wasn’t for…....the snake eaters that live here!!!!
.

.
.

-----
Regards, Bill McGighan