CHECK LIST N. AMER. AMPH. KEPT. 123 



TYPE locality: Angel de la Guardia [sic] Island, Lower Cali- 

 fornia. 

 range: Angel de la Guarda Island. 



Crotalus atrox lucasensis (Van Denburgh) 



Crotalus hicasensis Van Denburgh 



Proc. Calif. Ac. Sci., Ser. 4, Vol. 10, Aug. 6, 1920, p. 29, pi. 3. 

 Crotalus atrox lucasensis Schmidt 



Bull. Amer. Mus. Nat. Hist., Vol. 46, Dec. 7, 1922, p. 698. 



TYPE locality: Agua Caliente, Lower California. 

 RANGE : Southern Lower California. 



Crotalus cerastes Hallowell 

 SIDEWINDER 



Crotalus cerastes Hallowell 



Proc. Ac. Nat. Sci. Phila., Vol. 7, 1854, p. 95. 

 Crotalus cerastes Cope 



Ann. Rep. U. S. Nat. Mus., 1898 (1900), p. 1196, fig. 347. 



TYPE locality: Mo jave Desert. 



range: Northeastern Lower California, southern California, 

 southern Nevada, Arizona, southwestern Utah. 



Crotalus confluentus Say 

 PRAIRIE RATTLER 



Crotalus confluentus Say 



Long's Exp. Rocky Mts., Vol. 2, 1823, p. 48. 

 Crotalus confluentus Cope 



Ann. Rep. U. S. Nat. Mus., 1898 (1900), p. 1169, figs. 336-338. 



TYPE locality: "Valley of the Arkansa" near Bell's Springs, 



Colorado. 

 range : The Great Plains, from about the 96th Meridian to the 



Rocky Mountains and from southern Canada to Texas. 



Crotalus enyo (Cope) 



Caudisona enyo Cope 



Proc. Ac. Nat. Sci. Phila., 1861, p. 293. 

 Crotalus enyo Cope 



Bull. U. S. Nat. Mus., No. 1, 1875, p. 33. 

 Crotalus enyo Cope 



Ann. Rep. U. S. Nat. Mus., 1898 (1900), p. 1189, fig. 343. 



TYPE LOCALITY : Cape St. Lucas, Lower California. 

 range: Extreme southern Lower California. 



