88 CALIFORNIA ACADEMY OF SCIENCES. 



males the cross-bands have almost or entirely disap- 

 peared and the back and sides are finely mottled with 

 brown, gray, green, blue, and copper-color. The upper 

 head-plates are brown with pale centers. The tail is 

 cross-barred with dark and light brown or green. The 

 throat and belly of young specimens are bluish or yel- 

 lowish white with oblique dusky bands corresponding 

 to those on the sides of the head and body. In adult 

 males the throat and belly are nearly uniform dull pur- 

 plish cyanine blue, the edges of the scales often being 

 black or reddish brown. There is a slightly darker area 

 in front of the shoulder, but no distinct blotch or collar 

 is present. 



Length to aims 39 72 86 100 106 109 



Length of tail 52 102 118 115 119+122+ 



Snout to ear 10 17 17 20 20 21 



Width of head 9 15 17 20 21 21 



Shielded part of head 10 15 16 18 19 19 



Fore limb 19 34 39 45 44 48 



Hind limb 28 52 56 66 64 67 



Base of fifth to end of fourth toe .... 1 1 20 22 24 23 25 



Distribution. — The Dusky Scaly Lizard has been 

 found only in the coast ranges of Riverside and San 

 Diego Counties, California, and in the northern part of 

 Lower California. Originally described from Milquatay 

 Valley, it has since been secured between Campo and 

 the coast, at Witch Creek, in Clogston's Valley, Cahuilla 

 Valley, Strawberry Valley, Hemet Valley, and at San 

 Jacinto, Riverside, and Temescal. 



Habits. — This lizard of the rocks is common near San 

 Jacinto, but is very timid, rarely permitting the collector 

 to approach near enough to use fine shot with deadly 

 effect. In the cool of the morning and late in the 

 afternoon it may be seen upon the highest point of some 

 rounded boulder, but during the warmer hours it avoids 



