﻿14. GERRHONOTUS 457 



in twelve longitudinal series ; number of scales between 

 symphyseal plate and anus 60 to 63 or more. 



The ground color above is olive, brown, or yellow, some- 

 times marked or suffused with red or orange, more grayish 

 on the sides, crossed by about nine to 1 1 dark bands. These 

 dark bands may be brown or brownish black, continuous or 

 broken, and are darker laterally where their scales are tipped 

 with white. Tail proximally marked like the back, dis- 

 tally unicolor. Head and limbs unicolor or with traces of 

 olive brown mottlings. Lower surfaces suffused with gray, 

 edges of scales lighter, darker gray or slate-colored lines 

 along the middle of each longitudinal row. 



Length to anus 95 98 



Length of tail 219 231 



Snout to ear 19 20 



Width of head 13 1 + 



Head to interoccipital_ 15 17 



Fore limb 26 26 



Hind limb 33 3+ 



Base of fifth to end of 



of fourth toe 11 13 12 13 17 IS 



This lizard is similar to G. seincicauda scincicauda, but 

 the scales are more strongly carinate. The temporal scales 

 are keeled. The dorsal and caudal scales are strongly 

 keeled. The scales of the arm and forearm are keeled. 

 The coloration usually is brighter, but is quite variable. 



Distribution. — This subspecies, originally described from 

 a specimen said to have been collected at San Diego, Cali- 

 fornia, appears to be the only alligator lizard of southern 

 California and northern Lower California. It occurs on 

 certain islands off the coast as well as on the mainland. Its 

 range extends north along the western slope of the south- 

 ern Sierra Nevada (at least) to Mariposa County, and, in 

 southern California, west to Ventura County. Just where 



jfj; 'Reproduced. 



