48. CROTALUS 947 



Distribution. Crotalus enyo is known only from the 

 southern part of the peninsula of Lower California. It was 

 originally described from a specimen collected by John Xan- 

 tus at Cape San Lucas. Since then, it has been found at La 

 Paz, San Jose del Cabo, San Bartolo, Miraflores, Santa Anita, 

 San Antonio, San Pedro, Todos Santos, and in the Sierra 

 Laguna, all in the Cape Region. Mocquard has recorded 

 specimens from Mulege. 



Habits. Mocquard states that small mammals are eaten 

 by this rattlesnake. 



2 1 6. Crotalus tigris Kennicott 



TIGER RATTLESNAKE 



Plates 103 and 113 



Crotalus tigris KENNICOTT, Rep. U. S. Mex. Bound. Surv., Vol. II, 

 Rept., 1859, p. 14, pi. IV, (type locality, Sierra Verde and Pozo 

 Verde. Deserts of Gila and Colorado); BAIRD, Rep. Pac. 

 R. R. Surv., Vol. X, 1859, Rept., p. 16, pi. XXX, fig. i: COPE, 

 Proc. Acad. Nat. Sci. Phila., 1859, p. 338; COOPER, in Cronise, 

 Nat. Wealth California, 1868, p. 483; COOPER, Proc. Cal. Acad. 

 Sci., Vol. IV, 1870, p. 66; COPE, Surv. W. looth Merid., Vol. V, 

 1875, p. 534; COPE, Bull. U. S. Nat. Mus., No. i, 1875, pp. 33, 90; 

 CARMAN, Mem. Mus. Compr. Zool., Cambr., Vol. VIII, No. 3, 1883, 

 pp. 117, 175; YARROW, Bull. U.S. Nat. Mus., No. 24, 1883, pp. 12,74; 

 CARMAN, Bull. Essex Inst., Vol. XVI, 1884, p. 35; YARROW, in 

 Buck's Ref. Handb. Med. Sci., Vol. VI, 1888, p. 166; COPE, Proc. 

 U. S. Nat. Mus., Vol. XIV, 1892, p. 693; STEJNEGER, N. Amer. 

 Fauna, No. 7, 1893, p. 214; MERRIAM, N. Amer. Fauna, No. 7, 

 1893, p. 215; BOULENGER, Cat. Snakes Brit. Mus., Vol. Ill, 1896, 

 p. 580 (part); VAN DENBURGH, Occas. Papers Cal. Acad. Sci., V, 

 1897, P- 22 ; COPE, Report U. S. Nat. Mus. for 1898, 1900, p. 1181, 

 fig. 341; BROWN, Proc. Acad. Nat. Sci. Phila., 1901, p. 107; MEEK, 

 Field Columbian Mus., Zool. Sen, Vol. VII, No. i, 1906, p. 16; 

 DITMARS, Reptile Book, 1907, p. 459; VAN DENBURGH & SLEVIN, 

 Proc. Cal. Acad. Sci., Ser. 4, Vol. 3, 1913, p. 427, pis- XIX, XXVI, 

 fig. i; GRINNELL & CAMP, Univ. Cal. Publ. Zool., Vol. 17, No. 10, 

 1917, p. 197; STEJNEGER & BARBOUR, Check List N. Amer. Amph. 



