REPTILES AND AMPHIBIANS OF TEXAS 45 



much more accurate had he left all of the region east 

 of the range of Crotalus atrox unshaded and marked 

 it "distribution of Crotalus horridus." Mr. Mitchell 

 mentions this species from Victoria and Winchester, 

 Fayette County, the former locality well within the 

 range of atrox. I have either collected or examined 

 specimens of horridus in McLennan, Coryell, Bosque 

 and Williamson counties, in all of which atrox is also 

 found, the former inhabiting the timber lands, the 

 latter the rocky districts and flats. 



140. Crotalus lepidus Kennicott. Kennicott's Rattlesnake. 



Rio Grande Valley from Eagle Pass west almost to 

 El Paso. In the trans-Pecos district is not uncom- 

 mon in the Chisos, Davis and other mountain ranges 

 of Brewster, Pecos and Jeff Davis Counties. In color,_ 

 this rattlesnake is very variable, some authorities re- 

 ferring to it as the "green rattlesnake," while Bailey 

 calls it the "white rattlesnake." Some years ago, I 

 received from the San Bias Mountains, Chihuahua. 

 Mexico, a fresh specimen of this species, which was 

 bright salmon colored. 



AMPHIBIA 



SALIENTIA 



RANID^ 



141. Rana pipiens Schreber. Leopard Frog. 



The leopard frog, or, as it is called in many Texas 

 localities, the "spotted bull frog," is distributed all 

 over the State wherever there are watercourses. 

 Specimens from the western part of the trans-Pecos 

 region — Sierra Blanca and El Paso — are very close 

 to the Mexican variety called Rana pipiens austricola 

 by Cope. Specimens from Southern Texas — Browns- 

 ville and San Antonio — were named Rana berlandieri 

 by Baird and were afterward referred to as Rana 

 virescens (pipiens) brachycephala by Cope. The 

 latter is a western subspecies which I consider of 



