950 
16. CROTALIDZ 
Caudisona pyrrha Core, Proc. Acad. Nat. Sci. Phila., 1866, pp. 308, 
310 (type locality, Canyon Prieto near Fort Whipple, Arizona); 
Cope, Surv. W. tooth Merid., Vol. V, 1875, p. 535; Cougs, Surv. 
W. tooth Merid., Vol. V, 1875, p. 608. 
Crotalus mitchellii Corr, in Yarrow, Surv. W. tooth Merid., Vol. V, 
1875, p. 535; Cope, Bull. U. S. Nat. Mus., No. 1, 1875, p. 333 
Yarrow, Bull. U. S. Nat. Mus., No. 24, 1883, pp. 73, 189; Cope, 
Bull. U. S. Nat. Mus., No. 32, 1887, p. 90; Betpinc, West Amer. 
Scientist, Vol. III, No. 24, p. 98; Corr, Proc. U. S. Nat. Mus., 
Vol. XIV, 1892, p. 694; Van Densurcu, Proc. Cal. Acad. Sci., 
Ser. 2, Vol. 4, 1894, p. 450; STEJNEGER, Report U. S. Nat. Mus. 
for 1893, 1895, p. 454; Van Densurcu, Proc. Cal. Acad. Sci., Ser. 
2, Vol. 5, 1895, p. 159; BouLencer, Cat. Snakes Brit. Mus., Vol. 
III, 1896, p. 580; Mc Lain, Critical Notes, 1899, p. 13; Mocquarp, 
Nouv. Arch. Mus. Hist. Nat., Paris, Ser. 4, Vol. I, 1899, p. 331; 
Core, Report U. S. Nat. Mus. for 1898, 1900, p. 1193, figs. 345, 
346; Brown, Proc. Acad. Nat. Sci. Phila., 1901, p. 108; Van Den- 
BuRGH, Proc. Cal. Acad. Sci., Ser. 3, Vol. 4, No. 1, 1905, pp. 3, 26; 
Meek, Field Columbian Mus., Zool. Ser., Vol. VII, No. 1, 1906, 
p- 18; Dirmars, Reptile Book, 1907, p. 463; GRINNELL & GRINNELL, 
Throop Inst. Bull., No. XXXV, 1907, p. 59; GrinneLL, Univ. 
Cal. Publ. Zool., Vol. 5, No. 1, 1908, p. 170; Mocquarp, Miss. 
Sci. au Mexique, Pt. III, Rept., 1909, p. 970, pl. 77, figs. 6, 6a; 
Van Densurcu Proc. Cal. Acad. Sci., Ser. 4, Vol. 3, 1912, p. 152; 
Van Densurcu & Stevin, Proc. Cal. Acad. Sci., Ser. 4, Vol. 3, 
1913, p- 429, pl. XXVI, fig. 2; Atsatr, Univ. Cal. Publ. Zool., 
Vol. 12, No. 3, 1913, p. 445 Van Densurcu & Stevin, Proc. Cal. 
Acad. Sci., Ser. 4, Vol. 4, 1914, pp- 133, 145, 147; Camp, Univ. Cal. 
Publ. Zool., Vol. 12, No. 17, 1916, p. 533; GRINNELL & Camp, 
Univ. Cal. Publ. Zool., Vol. 17, No. 10, 1917, p. 197; VoRHIES, 
Univ. Ariz. Agric. Exper. Station Bull. No. 83, 1917, p. 359; STEJ- 
NEGER & Barsour, Check List N. Amer. Amph. Rept., 1917, 
p- 110; Cow es, Journ. Entomol. & Zool., Pomona College, Vol. 
XII, No. 3, 1920, p. 66; SrepHens, Trans. San Diego Soc. Nat. 
Hist., Vol. III, No. 4, 1921, p. 65; Van Denspurcu & Stevin, 
Proc. Cal. Acad. Sci., Ser. 4, Vol. XI, 1921, pp. 53, 72; NELson, 
Mem. Nat. Acad. Sci., Vol. XVI, 1921, pp. 115, 159. 
Crotalus pyrrhus Corr, Bull. U. S. Nat. Mus., No. 1, 1875, p. 33; Cope, 
in Yarrow, Surv. W. 1ooth Merid., Vol. V, 1875, p. 535, pl. XXII; 
Streets, Bull. U. S. Nat. Mus., No. 7, 1877, p- 39; Yarrow & 
Hensuaw, Ann. Rep. Chief of Engineers for 1878, Surv. W. rooth 
