1 8 . CNEMID OPHOR US 54-1 



small, nearly equal-sized granules. Tail lo.vg, provided 

 with rings of large, obliquely keeled scales. Femoral pores 

 varying from 16 to 20 on each thigh. 



The color above is light yellowish or brownish gray, 

 irregularly marbled with dark brown or black, which dark 

 markings usually are faint and indefinite and do not form 

 longitudinal lines or rows of spots even in the young. These 

 dark markings may take the form of reticulations on the 

 back and sides. They become obsolete in adults. The 

 upper surfaces of the limbs are brown or olive gray, some- 

 times faintly reticulated with black or dark brown. The 

 sides of the head and neck are gray or grayish brown without 

 any definite markings. The gular region is grayish or 

 yellowish, unicolor or with a few small black dots on single 

 granules. The lower surface of the body is bluish or green- 

 ish, marked with black between the plates. The tail is 

 grayish, greenish, or light olive brown above, unicolor, be- 

 coming blackish distally. The scales of the central two 

 series on the lower surface of the tail are black. 



Length to anus 56 60 61 68 70 73 



Length of tail 150 157 163 178 172 



Snout to ear 13 14 14 16 17 17 



Snout to intcrparietal 10 11 11 \2 l /2 13 13 



Width of head 8 9 9 10 11 11 



Fore limb 20 21 22 24 25 26 



Hind limb 38 41 42 46 47 45 



Base of fifth to end of 



fourth toe 19 19 19 21 21 20 



Distribution. Cnemidofhorus canus is known from Sal 

 Si Puedes Island, and North and South San Lorenzo islands, 

 Gulf of California, Mexico. 



Remarks. Specimens from South San Lorenzo Island 

 are much darker, both above and below, than those from 



