CHECKLIST OF REPTILES OF MEXICO 93 



CKOTAPHYTUS INSULARIS Van Denburgh and Slevin 



Crotaphytus insularis Van Denburgh and Slevin, Proc. California Acad. Sci., 

 ser. 4, vol. 11, 1921, p. 96. — Van Denburgh, Occ. Pap. California Acad. 

 Sci., No. 10, 1922, pp. 114-116. 



Type. — California Acad. Sci. No. 49151; J. R. Slevin collector. 

 Type locality. — Angel de la Giiarda Island, 7 miles north of Pond 

 Island, Gulf of California, Baja California. 

 Range. — Restricted to type locality. 



CROTAPHYTUS DICKERSONAE " Schmidt 



Crotaphytus dickersonae Schmidt, Bull. Amer. Mus. Nat. Hist., vol. 46, 1922, p. 



638, fig. 2. 

 Crotaphytus collaris dickersonae, Allen, Occ. Pap. Mus. Zool. Univ. Michigan, 



No. 259, 1933, p. 7. 



TV^Je.— U.S.N.M. No. 64451; C. H. Townsend collector. 

 Type locality. — Tibur6n Island, Sonora, 

 Range. — Known only from the type locality. 



CROTAPHYTUS RETICULATUS Baird 



Crotaphytus reticulatus Baird, Proc. Acad. Nat. Sci. Philadelphia, 1858, p. 253. — 

 Cope, Ann. Rep. U. S. Nat. Mus., 1898 (1900), p. 254, fig. 20.— Smith, 

 Handbook of lizards, 1946, pp. 173-175, pi. 34. 



Type.— Two cotypes, U.S.N.M. No. 2692, Ringgold Barracks, 

 John H. Clark collector; No. 2731, Laredo, Tex., Arthur C. B. Schott 

 collector. 



Type locality. — Laredo and Ringgold Barracks, Tex., here restricted 

 to Laredo. 



Range. — Extreme southern Texas, along the Rio Grande, as far west 

 as Eagle Pass, and southward in the northern parts of adjacent states 

 in Mexico. Reported in Mexico from Tamaulipas: Mier; Nuevo Leon: 

 6 miles west of China, 4 miles west of China, 5 miles east of General 

 Bravo, "Los Herrars"; Coahuila: 2 miles north of Nava. 



Genus GAMBELIA Baird 



Gamhelia Baird, United States and Mexican boundary survey, vol. 2, Rept., 

 1859, p. 7.— Smith, Handbook of lizards, 1946, pp. 158-159. 



Genotype. — Gamhelia wislizenii Baird and Girard. 



Range. — Northern Idaho, Nevada, and Utah southward through 

 southeastern California and Baja California, and into western Sonora 

 and northern Coahuila. 



Species. — One, with two subspecies. Only the typical form occurs 

 in Mexico. 



«' This species has been reduced to subspecific status on the basis of specimens reported by Allen from 

 Hermosillo and 40 miles north of Guaymas. Since we have not seen these specimens, and since he did not 

 take into consideration some of the more important characters, we retain the specific status for this form 

 pending a more considered revision. 



