48. CROTALUS 931 
Proc. Cal. Acad. Sci., Ser. 4, Vol. XI, 1921, pp. 29, 38, 40, 53; 
Nexson, Mem. Nat. Acad. Sci., Vol. XVI, 1921, p. 114. 
Crotalus oregonus Ho.sroox, N. Amer. Herpet., Ed. 2, Vol. III, p. 21, 
pl. III; Barro & Girarp, Cat. N. Amer. Rept., Pt. 1, Serpents, 
1853, p. 145; Barrp, U. S. Pac. R. R. Surv., Rept., Vol. X, 1859, 
p- 14, pl. XXIV, fig. 6; Cope, Proc. Acad. Nat. Sci. Phila., 1859, 
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No. 157, 1898, p. 141; Brown, Proc. Acad. Nat. Sci. Phila., 1901, 
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Acad. Nat. Sci., Phila., 1911, p. 232; Van Densurcu, Proc. Cal. 
Acad. Sci., Ser. 4, Vol. 3, 1912, pp. 149, 151, 158; Van DEnBuRGH & 
Stevin, Proc. Cal. Acad. Sci., Ser. 4, Vol. 3, 1913, p. 428; Van 
DensurcH & Stevin, Proc. Cal. Acad. Sci., Vol. 4, 1914, pp. 133, 
138, 141; Evermann, Copeia, 1915, No. 14; Bryant, Copeia, 
1915, No. 23; RicHarpson, Proc. U. S. Nat. Mus., Vol. 48, 1915, 
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Exper. Station Bull. No. 83, 1917, p. 360; BLrancuarp, Copeia, 
1921, No. 90, p. 6. 
Crotalus lucifer Barrp & Girarp, Proc. Acad. Nat. Sci. Phila., Vol. VI, 
1852, p. 177 (type locality, Oregon and California); Bairp & 
Grrarp, Cat. N. Amer. Rept., Pt. 1, Serpents, 1853, p. 6; GirarRb, 
U.S. Explor. Exped., Herpet., 1858, p. 187, pl. XV, figs. 1-6; Barrp, 
U.S. Pac. R. R. Surv., Vol. X, Rept., 1859, p. ro, pl. XI; Hat- 
LOWELL, U. S. Pac. R. R. Surv., Vol X, 1859, pl. III; Cope, Proc. 
Acad. Nat. Sci Phila., 1859, p. 337; Cooper, Rep. Pacific R. R. 
Surv., Vol. XII, Pt. III, 1860, p. 295; Lorp, Natural. Vancouver 
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V, 1875, p. 529; Cope, in Yarrow Surv. W. tooth Merid., Vol. 
V, 1875, p. 533; Cope, Bull. U. S. Nat Mus., No. 1, 1875, p- 333 
Lockincton, Amer. Naturalist, 1880, p. 295; GARMaN, Mem. Mus. 
Compr. Zool., Cambr., Vol. VIII, No. 3, 1883, p. 114; Yarrow, 
Bull. U. S. Nat. Mus., No. 24, 1883, pp. 12, 76; Cope, Standard 
Nat. Hist., Vol. III, 1885, pl. facing p. 398; Townsenp, Proc. U. S. 
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2, Vol. 1, 1888, p. 94; SreyNeceR, N. Amer. Fauna, No. 5, 1891, 
p- 111; Sreynecer, N. Amer. Fauna, No. 7, 1893, p. 218; Cougs, 
