534 CALIFORNIA ACADEMY OF SCIENCES. 



covered with flattened granules. There is a series of 

 large plates along the edge of the last gular fold. The 

 quadrate ventrals are in sixteen longitudinal and thirty- 

 two to thirty -five transverse rows. The large preanal 

 plates are arranged in two or three series, edged by 

 smaller scales and granules. The conical tail is covered 

 with whorls of smooth scales which are very narrow and 

 transversely convex. There is a series of from ten to 

 twelve femoral pores along each thigh. 



The ground color is smoke gray or cinnamon, with 

 numerous irregular maculations of dark brown or black. 

 These markings are much smaller and less numerous on 

 the lower surfaces. There is considerable variation in 

 the color pattern. One specimen has two narrow parallel 

 black lines, originating at the posterior edge of each oc- 

 cipital plate, and running the whole length of the back. 

 The space between each pair of these lines is unmarked, 

 but the rest of the upper surface is irregularly spotted. 

 Other specimens offer an almost perfect imitation of coarse 

 granitic rock. 



Snout to vent io6 mm. Tail (injured) 73 mm. Hind 

 limb 38 mm. Fore limb 30 mm. Shielded part of head 

 24 mm. Snout to ear 24 mm. Snout to anterior gular 

 fold 20 mm. Snout to posterior fold 34 mm. Base of 

 fifth to end of fourth toe 14 mm. 



Distribution. — This largest species of the group has 

 been recorded from San Nicolas, Santa Catalina, and 

 San Clemente Islands, California. 



