14 BAYLOR UNIVERSITY BULLETIN 



Gerrhonotus liocephalus infernalis Baird. Texas Gerrhonotus. 



Bailey records a specimen of this rather rare species from 6,000 feet in the 

 Chisos Mountains. We obtained one example in the foot-hills of the same 

 range. 



Cnemidophorus tessellatus Baird and Girard. Whip-tail Lizard. 



Recorded from Boquillas by Bailey. We collected a fine adult example 

 about five miles from Terlingua. 



Cnemidophorus perplexus Baird and Girard. Seven-lined Lizard. 



A number of these swifts were collected in the arid strip beyond Elephant 

 Mesa. A few were obtained near Paisano, at Blackburn's Ranch and in Du 

 Bois Canyon. 



Cnemidophorus gularls Baird and Girard. Western Lined Lizard. 



Paisano, Du Bois Canyon, and Butcherknife. In life these specimens differ 

 from Central Texas examples by having the light lines buffy yellow instead of 

 green. 



Eumeces brevilineatus Cope. 



"Lloyd collected a single example at Paisano in a damp fernery at SiSOO 

 feet." (Bailey). 



Eumeces tetragrammus Baird. Baird's Skink. 



One example from among rocks, on the road from Paisano to Blackburn's. 



Eumeces obsoletus Baird and Girard. Sonoran Skink. 



I saw, but did not succeed in capturing, a large adult specimen of this skink 

 at Blackburn's. It was stirred out from among rocks, only about a quarter of 

 a mile from the ranch-house. As a rule, I do not believe in including records 

 not based on actual specimens in hand, but this species is so conspicuous and so 

 unlike other Texan skinks when adult, that there can be very little possibility 

 of my being in error. 



Diadophis regalis Baird and Girard. Regal Ring-necked Snake. 



Bailey records one specimen from the Chisos Mountains at 5,000 feet. 



Zamenis flagellum Shaw. Whip Snake. 



Said to be abundant at Paisano and Blackburn's but we saw only a single 

 specimen. Chisos Mountains (Bailey). 



Pityophis caternifer sayi Cchlegel. Bull Snake. 



Paisano (Bailey) and Alpine. Said to be common in dog towns. 



Chionactis episcopus isozonus Cope. 



Bailey records a single example from the Chisos Mountains at 6,000 feet. 



Tropidonotus sipedon transversus Hallowell. 

 Tropidonotus rhombifer Hallowell. 



These are probably the only snakes of the genus Tropidonotus that occur in 

 this portion of the Trans-Pecos Region. Water-snakes were frequently ob- 

 served in Calamity Creek but only one specimen of each of these two species 



