18. CNEMIDOPHORUS 549 



fhorus gr&hamn and C. seMneatus^ probably belong to this 

 species. Miss Dickerson described C. vandenburghi from a 

 single specimen from Carmen Island in the Gulf of Cali- 

 fornia. I have carefully compared two specimens from 

 Carmen and five from Danzante Island with two of Cope's 

 original series from Santa Margarita Island and believe them 

 to be identical in every respect. Femoral pores are Mar- 

 garita 21 or 22, Comondu 20, Danzante 16-20, Carmen 

 20-23. C. bartolomas may be based upon specimens of this 

 species. 



Distribution. This lizard occupies a portion of the 

 peninsula of Lower California north of the Cape Region 

 together with Santa Margarita and Magdalena islands on 

 the western coast, and San Marcos, Danzante and Carmen 

 islands in the Gulf of California, Mexico. On the penin- 

 sula, it occurs at Comondu and at Concepcion Bay, and, if 

 the identifications indicated above are correct, at Santa 

 Rosalia and Mulege (Mocquard), and San Bartolome and 

 Ballenas bays (Dickerson). 



120. Cnemidophorus celeripes Dickerson 

 SAN JOSE ISLAND WHIPTAIL 



Cnemidophorus cflcripes DICKERSON, Bull. Amer. Mus. Nat. Hist., 

 Vol. 41, 1919, p. 472 (type locality, San Jose Island, Gulf of 

 California, Mexico); NELSON, Mem. Nat. Acad. Sci., Vol. XVI, 

 1921, pp. 114, 115, 171. 



Description. Body long, with a very slender tail and 

 very long legs. Nostrils opening in large anterior nasal 

 plates, latter in contact on top of snout. Posterior nasal 

 forming sutures with anterior nasal, first, second, and third 

 labials, loreal, prefrontal, and frontonasal plates. Loreal 

 in contact with third and fourth labials, first subocular, pre- 

 ocular, first superciliary, prefrontal, posterior nasal, and 



