34 University of California Publications in Zoology [Vol. 12 



Crotaphytus wislizenii Baird and Girard 



Leopard Lizard 



Distribution : Vallevista, 1800 feet, no. 496 ; Cabezon, 1700 feet, nos. 

 174-5, no. *6; Snow Creek, 1500 feet, no. 153; Dos Palmos Spring, 

 3000 feet, no. 232. On Piiion Flat several were noted. 



This species usually occurs in Lower Sonoran and arid Upper Son- 

 oran. In the San Jacinto area it is found in Lower Sonoran and on 

 the edge of Upper Sonoran. 



These lizards were found on the ground in the brush. Several 

 were observed to be swift runners. 



Sauromelas ater Dumeril 

 Chuck-a-walla 



Two tjrpical individuals of large size were taken. At an altitude 

 of 3500 feet near Dos Palmos Spring no. 560 was shot as it was 

 sitting on the topmost ledge of a boulder pile. Several others were 

 seen at a distance, usually with only their heads in sight. In their 

 habits they were shy. 



At Snow Creek, 1500 feet, the other, no. 193, was found alive, 

 caught in a trap in the morning. It offered to bite when approached 

 and puffed up its body until its skin was taut. 



Uta mearnsi Stejneger 

 Mearns Lizard 



Distribution : Banning, 2200 feet, nos. 87, 121-3, 149, 190 ; Cabezon, 

 1700-2000 feet, nos. 4, 137, 178-9, 200, no. *11 ; Dos Palmos Spring, 

 3500 feet, no. 571; Palm Canon, 3000 feet, no. 234; Lower Palm 

 Canon, 800 feet, nos. 235-6. 



Previous records of this species are all from the eastern slope of 

 the Coast Range of San Diego County near the Mexican boundary line. 

 In the San Jacinto region it is found rather generally in the Lower 

 Sonoran and dilute Upper Sonoran areas on the desert (eastern) side 

 of the range and through San Gorgonio Pass. In coloration the most 

 noticeable feature is the generally darker and more uniform appear- 

 ance of our specimens as compared with those from the San Diego 

 Range. 



Throughout all their range these lizards are dwellers on the rocks, 

 usually on the vertical sides. At Palm Canon they are noted as being 

 shy, darting about with great rapidity, scarcely trusting themselves 



