SAurormdus and Crotaphytus 



Pale, with a yellow or white net-work (reticulate 



pattern) on body. Faint indications of a double 



black collar on neck. ... No white dots on body. 



RETICULATED LIZARD, Crotaphytus reticulutus. 



II. Head of moderate size; body more elongated. 



Yellowish, with large, rounded, dark blotches; spaces 



spaces between the blotches dotted with red or yellow. 



LEOPARD LIZARD, Crotaphytus wisU^enii. 



Detailed descriptions: 



THE COLLARED LIZARD 



Crotaphytus collaris, (Tay) 



Body short and stout; head very large and distinct from 

 the neck. Hind limbs long and powerful; much longer than 

 the front pair and of a development to assist the animal in jumping. 



Colouration. — While the colours are variable, the double 

 black collar is a strong distinguishing feature. 



The body colour may be yellowish, pale gray or bright green. 

 Scattered over the back and the sides are numerous white or 

 yellow dots; at the edge of the abdomen, these are often of a 

 brick red." Behind the head are two, wide, jet-black bands, 

 separated by a white or yellowish space — thus forming a double 

 collar. The abdomen is greenish; the throat deep orange. 



With most female examples, the black collar is less pro- 

 nounced than on the male; on some it is merely represented 

 by narrow strips of black. Most of the females are gray, or 

 clay colour. During the breeding season they are spotted with 

 bright, brick red; at such times the males assume vivid tints 

 of green or yellow. 



Dimensions. — Following are the measurements of an adult 

 male: 



Total Length 12 inches. 



Length of Tail SJ " 



Width of Body i i " 



" " Head i\ " 



Length of Front Limb ; i J " 



" Hind " 3i " 



Distribution. — Generally distributed and abundant through- 

 out the Western states from Arkansas and Missouri to eastern 

 California. Southern Idaho seems to be the most northern 

 portion of the range; southward, the species extends intoSonora 



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