• Big Bend National Park, Basin Rd, Chisos Mts., Brewster Co., TX. T. Boyden, August 1974. Photo courtesy of G. T. Salmon.

  • Black Gap, Brewster Co., TX. Collected by Troy Hibbitts, June 1995. Photo by Troy Hibbitts.

  • Black Gap, 7 miles N of La Linda, Brewster Co., TX. Collected by M. Forstner, May 1991. Photo © Troy D. Hibbitts.

  • Big Bend National Park, Basin Rd, Chisos Mts., Brewster Co., TX. T. Boyden, August 1974. Photo courtesy of G. T. Salmon.
  • Captive-produced female, age 18 months, Black Gap, Brewster Co., TX.
  • Captive-produced subadult male, Black Gap, Brewster Co., TX.
  • Black Gap, Brewster Co., TX. Collected May 1992 by B. Hubbs. Photo © Troy Hibbitts.
  • Black Gap, Brewster Co., TX. Captive-bred. Photo by Troy Hibbitts.

  • Black Gap, Brewster Co., TX. Collected by Steve Boyd, 2005. Photo by Troy Hibbitts.
  • Black Gap, Brewster Co., TX. Collected by Troy Hibbitts and Ken Wray, May 2001. Photo by Troy Hibbitts. Another image of this snake, taken as an adult, follows.

  • Black Gap, Brewster Co., TX. Collected by Troy & Marla Hibbitts, 1992. Photo by Terry L. Hibbitts.

  • Black Gap, Brewster Co., TX. Captive-bred female, descended from a wild-caught near-patternless male collected in May 1993 by Chris Sheldon, and subsequently used in multiple breedings by Dan Johnson. A photo of the founder w/c male may be seen on Johnson’s site (http://www.dan-johnson.net/herp/bgp96a0001.html).
  • Black Gap, Brewster Co., TX. Captive-bred subadult male whose ground color is becoming progressively darker.
  • Black Gap, Brewster Co., TX. Adult captive-bred female.
  • Black Gap, Brewster Co., TX. Photo courtesy of J. Siefer.

  • Black Gap, Brewster Co., TX. Photo courtesy of J. Siefer.
  • Black Gap, Brewster Co., TX. CB adult male, C. Smith collection.

  • Black Gap, Brewster Co., TX. CB 2007 hatchling.

  • Black Gap, Brewster Co., TX. Troy and Marla Hibbitts, July 2000. Photo by Troy Hibbitts.
  • Black Gap, Brewster Co., TX. Collected by M. Forstner 1992. Photo by Troy Hibbitts.
  • Black Gap, Brewster Co., TX. Collected 1993. Photo by Troy Hibbitts.

  • Black Gap, Brewster Co., TX. Collected by N. Nunley, 1996. Photo by Troy Hibbitts.

  • Black Gap, Brewster Co., TX. Collected by N. Nunley 1997. Photo by Troy Hibbitts.

  • Black Gap, Brewster Co., TX. CB 1993. Photo by Troy Hibbitts.

  • Black Gap, Brewster Co., TX. CB 2007. Photo by Troy Hibbitts.
  • Black Gap, Brewster Co., TX. Captive-bred adult male. Photo by Troy Hibbitts.