8. CALLISAURUS 147 



and are not or but rarely united ventrally. There may be 

 more or less orange-red on the throat, behind the axilla and 

 on the back, as in other species. 



Length to anus 75 77 79 80 80 80 



Length of tail 110 116 113 106 112 110 



Snout to back of 



interparietal 13 13J4 14 14 1V/2 14> 



Snout to ear 15 15 16 16 16 17 



Width of head 13 13 14 13 14 14 



Fore limb 42 43 43 41 41 43 



Hind limb 72 73 73 75 72 74 



Base of fifth to end of 



fourth toe 29 30 29 30 29 30 



Variation. The above description is based upon speci- 

 mens from Carmen Island. Those from other localities 

 show but little variation. In the series from South Santa 

 Inez Island the black latero ventral blotches are blurred or 

 more or less obsolete. Femoral pores vary as follows: 

 Angeles Bay 13 to 16, average 14.2; Las Animas Bay 15 to 

 17, average 15.77; San Francisquito Bay 12 to 18, average 

 15.18; Loreto 1 5 ; Agua Verde Bay 1 3 to 1 8, average 1 5.72 ; 

 San Nicolas Bay 12 to 16, average 14.50; Concepcion Bay 

 14 to 17, average 15.66; San Evaristo 15 to 17, average 

 15.75; San Marcos Island 13 to 20, average 16.16; South 

 Santa Inez Island 12 to 20, average 15.94; San Jose Island 

 11 to 17, average 14.69. 



Distribution. I have examined specimens from Angeles 

 Bay, Las Animas Bay, San Francisquito Bay, Loreto, Agua 

 Verde Bay, San Nicolas Bay, Concepcion Bay, and San 

 Evaristo, on the peninsula of Lower California, and from 

 San Marcos, South Santa Inez, Carmen, and San Jose islands 

 in the Gulf of California. Specimens which have been col- 



