558 



Length to anus 



Length of tail 



Snout to ear 



Snout to interparietal 



plate 



Width of head 



Fore limb 



Hind limb 



Base of fifth to end of 



fourth toe 17 17 20 19 22 20 



Distribution. — The types of this species were collected 

 at Cape San Lucas, by Mr. John Xantus. Mr. Belding se- 

 cured others at La Paz. We have received typical speci- 

 mens from San Jose del Cabo and Miraflores, La Paz, 

 Todos Santos, Agua Caliente, Buena Vista, San Bartolo, San 

 Antonio, Triunfo, San Pedro, and the Sierra Laguna. It 

 appears to be restricted to the terminal portion of Lower 

 California. 



Variation. — Two hundred and sixty-six (including one 

 of the specimens upon which V. beldingi was established) 

 from northern Lower California and San Diego County, 

 California, were examined with a view to determining the 

 status of this form. The character originally depended 

 upon for the distinction of V. beldingi from V. hyperythra, 

 viz., the small size of the scales on the collar in V. beldingi, 

 was found to be valueless, since many of the northern speci- 

 mens have these scales as large as in individuals collected 

 near Cape San Lucas, and since much individual variation 

 exists in both. There appears to be not even an average 

 difference, in this respect, between the northern and south- 

 ern forms. Both have the largest scales on the edge of the 

 collar in all specimens. The difference in the extent to 



