6. CROTAPHYTUS 117 



Vol. II, 1885, p. 204; GUNTHER, Biologia Central i-Americana, 

 Kept., 1890, p. 59; STEJNEGER, N. Amcr. Fauna, No. 3, 1890, p. 

 105; STEJNEGER, N. Amer. Fauna, No. 7, 1893, p. 167; VAN 

 DENBURGH, Bull. U. S. Fish. Com., 1894-, p. 56; COPE, Amcr. 

 Natvralist, Vol. XXX, 1896, pp. 1013, 1015, 1018; VAN DENBURGH, 

 Proc. Cal. Acad. Sci., Ser. 2, Vol. 5, 1896, p. 1004-j VAN DEN- 

 BURGH, Proc Cal. Acad. Sci., Ser. 2, Vol. 6, 1896, p. 339; VAN 

 BURGH, Occas. Papers, Cal. Acad. Sci., V, 1897, p. 56; HERRICK, 

 TERRY & HERRICK, Bull. Sci. Lab. DENISON, Univ., Vol. XI, 1899, 

 p. 140; HERRICK, TERRY & HERRICK, Bull. Univ. New Mexico, Vol. 

 I, 1899, p. 140; McLAiN, Critical Notes, 1899, p. 2; COPE, Rep. 

 U. S. N*t. Mus. for 1898, 1900, p. 255, fig. 21 (part); STONE & 

 REHN, Proc. Acad. Nat. Sci. Phila., 1903, p. 31; BROWN, Proc. 

 Acad. Nat. Sci. Phila., 1903, pp. 545, 552; VAN DENBURGH, Proc. 

 Cal. Acad. Sci., Ser. 3, Zool., Vol. 4, No. 1, 1905, pp. 3, 25 ; BAILEY, 

 N. Amer. Fauna, No. 25, 1905, pp. 28, 40; MEEK, Field Columb. 

 Mus., Zool. Ser., Vol. VII, No. 1, 1906, p. 8; GRINNELL & GRIN- 

 NELL, Throop Institute Bull., No. XXXV, 1907, p. 56, fig. 22; 

 DITMARS, Reptile Book, 1907, p. 115, pi. XXXVII, fig. 2; RUTH- 

 VEN, Bull. Amer. Mus. Nat. Hist., Vol. XXIII, 1907, p. 515; 

 GRINNELL, Univ. Cal. Publs. Zool., Vol. 5, No. 1, 1908, p. 160; 

 STONE, Proc. Acad. Nat. Sci. Phila., 1911, p. 224; VAN DENBURGH, 

 Proc. Cal. Acad. Sci., Ser. 4, Vol. 3, 1912, p. 152; VAN DENBURGH, 

 Proc. Cal. Acad. Sci., Ser. 4, Vol. 3, 1912, p. 155; TAYLOR, Univ. 

 Cal. Publs. Zool., Vol. 7, No. 10, 1912, p. 346; VAN DENBURGH 

 & SLEVIN, Proc. Cal. Acad. Sci., Ser. 4, Vol. 3, 1913, p. 398; 

 ATSATT, Univ. Cal. Publs. Zool., Vol. 12, No. 3, 1913, p. 34; 

 FRANKLIN, Copcia, 1914, No. 5, p. 1; VAN DENBURGH & SLEVIN, 

 Proc. Cal. Acad. Sci., Ser. 4, 1914, pp. 132, 144, 145; 

 RICHARDSON, Proc. U. S. Nat. Mus., Vol. 48, 1915, p. 407; RUTH- 

 VEN & GAIGE, Occas. Papers Mus. Zool. Univ. Michigan, No. 8, 

 1915, p. 16; VAN DENBURGH & SLEVIN, Proc. Cal. Acad. Sci., 

 Ser. 4, Vol. 5, 1915, p. 103; STRECKER, Baylor Bulletin, Vol. 

 XVIII, No. 4, 1915, p. 17; CAMP, Univ. Cal. Publs. Zool., Vol. 12, 

 No. 17, 1916, p. 522; CAMP, Univ. Cal. Publs. Zool., Vol. 17, 

 No. 7, 1916, p. 70; GRINNELL & CAMP, Univ. Cal. Publs. Zool., 

 Vol. 17, No. 10, 1917, p. 152; STEJNEGER & BARBOUR, Check 

 List N. Amer. Am ph. Rept., 1917, p. 46; COWLES, Journ. Entomol. 

 & Zool., Pomona College, Vol. XII, No. 3, 1920, p. 64; STEPHENS, 

 Trans. San Diego Soc. Nat. Hist., Vol. Ill, No. 4, 1921, p. 61; 



