CHECKLIST OF REPTILES OF MEXICO 207 



ELGARIA MULTICARINATA NANA (Fitch) 



Oerrhonotus scincicauda nanus Fitch, Copeia, 1934, p. 7. 



Gerrhonotus multi-carinatus nanus, Fitch, Amer. Midi. Nat., vol. 20, 1938, pp. 



397-399, fig. 2. 

 Elgaria multicarinata nana, Tihen, Amer. Midi. Nat., vol. 41, 1949, p. 596. 



Type.—Mus. Vert. Zool. Univ. California No. 5402; A. B. Howell 

 collector. 



Type locality. — South Island, Los Coronados Islands, Baja 

 California. 



Range. — Los Coronados Islands, Baja California. 



ELGARIA MULTICARINATA WEBBII (Baird) 



Gerrhonotus webhii Baird, Proc. Acad. Nat, Sci. Philadelphia, 1858, p. 225. 

 Gerrhonotus scincicauda webhii, Grinnell and Camp, Univ. California Publ. ZooL, 



vol. 17, 1917, p. 168. 

 Gerrhonotus multi-carinatus webhii, Fitch, Amer. Midi. Nat., vol. 20, 1938, pp. 



395-397.— Smith, Handbook of lizards, 1946, pp. 460-462, pi. 130. 

 Elgaria multicarinatus webhii, Tihen, Amer. Midi. Nat., vol. 41, 1949, p. 596. 

 Gerrhonotus scincicauda ignavus Van Denburgh, Proc. California Acad. Sci.. ser. 



3, vol. 4, 1905, p. 19, pi. 7, figs. 1-2 (type locality, San Martin Island, Baja 



California). 



Type.—V.S.'NM. No. 3078; T. H. Webb collector. 



Type locality. — "San Diego to El Paso," "probably from near 

 vicinity of San Diego, San Diego Co. California [?]" (Fitch, loc. cit.). 

 Here restricted to San Diego, Calif. 



Range. — Southern California and extreme northern Baja California. 

 Reported in Baja California from San Pedro Martir Mountains, 



Family XENOSAURIDAE Cope 



Xenosauridae Cope, Proc. Acad. Nat. Sci. Philadelphia, vol. 18, 1866 (1867), 

 p. 322. 



Genera. — A single genus, Xenosaurus Peters, is known. 

 Range. — San Luis PotosI to Guatemala. 



Genus XENOSAURUS Peters 



Xenosaurus Peters, Monatsb. Acad. Wiss. Berlin, 1861, p. 453. 



Genotype. — Xenosaurus fasciatus FeteTS= Xenosaurus grandis 

 (Gray). 

 Range. — San Luis Potosi to Guatemala. 

 Species. — Three. 



KEY TO SPECIES OF XENOSAURUS 



1. Arm with widely spaced tubercles on its dorsal surface; a row of supraoculars 



each 1}^ to 2 times as long as wide; cream, black spotted on venter 2 



Arm regularly covered with tubercles on dorsal surface; supraoculars not 

 forming a series of more or less regular enlarged scales; venter uniformly gray 

 or gray-white without spots or flecks newmanonira (p. 208) 



