10. UTA 243 



of variation is equally great. The back and sides are vari- 

 ously striped, spotted, dotted, blotched or marbled with 

 dark brown, blue, green, gray or yellow. There often is a 

 double series of large brown spots, light or dark edged be- 

 hind, along the back. These usually are much more dis- 

 tinct in females and young than in adult males. The tail is 

 similarly marked with brown. The ground color below is 

 yellowish white, often more or less tinged with greenish or 

 bluish on the chest and sides of the belly. The throat in 

 adults is blue, dotted or narrowly banded on the chin and 

 sides with white, yellow or orange. There is a round spot 

 of deep indigo behind the axilla, and often a more or less 

 distinct brown patch in front of the shoulder. 



Length to anus 4-4 44 46 47 53 5 5 



Length of tail 82 85 82 



Snout to ear 10 10 10^ H^ 12 12 



Snout to back of interparietal 10 9^ 10 10J4 11 >4 1I>4 



Width of head 9 9 9 9J^ 10 10^ 



Fore limb 20 21 21 21>^ 21 22 



Hind limb 35 35 35 39 39 39 



Base of fifth to end of 



fourth toe 14 14 14 14^ 15 15 



Remarks. — What has been said in connection with the 

 other subspecies, U. s. stansburiana, need not be repeated 

 here. 



Richardson states that U. s. elegans is like U. s. stans- 

 buriana, but with larger and more heavily carinated and 

 acutely pointed dorsal scales. Also, the general size is lar- 

 ger than that of U. s. stansburiana, and the change from 

 keeled dorsals to smooth granules occurs nearer the dorso- 

 lateral line and more abruptly. 



The general character of the dorsal lepidosis seems to 

 be maintained throughout the range as given below. The 

 dorsal scales are imbricate and strongly keeled, and change 



