Hi everyone, I recently purchased an unrelated pair of santa Cruz Garters (Thamnophis atratus ssp atratus)
The seller has contacted me to advise that he may have mixed the sexes up, and wanted to be certain that we both had a male and female. Now I've looked through the sexing article on this forum and I am 99.9% certain I have a pair, but would like to hear other peoples opinions.

I managed to keep them still long enough to take a couple of quick pics!

Suspected female:


Santa Cruz Garter Snake Female by Coolsox, on Flickr

Side view:


Santa Cruz Garter Snake Female by Coolsox, on Flickr


Suspected Male:


Santa Cruz Garter Snake Male by Coolsox, on Flickr

Side view:


Santa Cruz Garter Snake Male by Coolsox, on Flickr

And one of the bitey end, just for show


Santa Cruz Garter Snake by Coolsox, on Flickr

Many thanks for your assistance!