Sa.uroma.lus and Crotaphytus 



The writer's specimens dug hollows in the sand, under flat, 

 shelving stones. They retreated to these hiding places shortly 

 before sunset and always remained in them on cloudy days. 

 One of the largest females u inches long deposited 21 eggs, 

 during the early part of August. The eggs were T 7 7 of an inch 

 in diameter and f of an inch long; their covering was as thin 

 and soft as paper. 



THE RETICULATED LIZARD 



Crotaphytus reticulatus, (Baird) 



Form very similar to that of the Collared Lizard; head 

 large and very distinct from the neck. 



Colouration. Yellowish brown or grayish; head, body, 

 limbs and tail covered with a net-work of pale gray or yellow; 

 there may be traces of the double collar, but this is usually 

 absent. 



Dimensions. Like the preceding. 



Distribution. Texas. 



THE LEOPARD LIZARD 



Crotaphytus wisli^enii, (B. & G.) 



Head much narrower than that of the preceding lizards. 

 Body more elongated; tail very long and slender. 



Colouration. Yellowish brown, with large, rounded, black 

 or brown blotches on the body and limbs. Between these blotches 

 are numerous brick-red dots; the blotches may be outlined 

 with borders of dots. There are usually pale, narrow lines 

 crossing the back; the tail is coarsely reticulated with light and 

 dark hues. Throat barred with black. 



Dimensions. Total Length 12 inches. 



Length of Tail 8$ " 



Width of Body f " 



Width of Head ft " 



Length of Head ft " 



Distribution. The Great Basin. Occurs from eastern 

 Oregon to northern Mexico. Most abundant in the desert re- 

 gions of eastern California, Nevada and Arizona. Does not 

 range as far east as the Collared Lizard; the distribution in 

 the East does not appear to extend beyond New Mexico and 

 extreme southwestern Texas. 



