I am going back in my field journals to resurrect some of my old data. This observation came as part of a field herpetology class I took at Texas A&M with Dr. James (Jim) Dixon as an undergraduate student. We spend the weekend at a ranch of another faculty member (Klussman) just west of Enchanted Rock State Park.
I apologize for the poor quality of the photo but I was taking the picture with a poor camera and a poor eye to detail at that time.