576 VIPERID&. 
Yellowish or greyish brown above, with a series of large dark 
brown light-edged rhombs; a yellowish streak from the canthus 
rostralis along the supraciliary border to the middle of the temple ; 
an oblique dark streak below the eye; uniform yellowish white 
‘beneath. 
Total length 760 millim. ; tail 65. 
Arizona, New Mexico, Texas, North Mexico.. 
a. Yg. (Se. 27 ; V.167; Duval Co., Texas, W. Taylor, Esq. [P.}. 
C. 18). 
b. Q (Sc. 25; V. 170; Huamantla, Mexico, T.M. Rymer Jones, a 
O. 20). 8000 ft. ete [P.]. (Type of C. sa 
vin, 
3. Crotalus confluentus. 
? Crotalinus viridis, Rafin. Am, Monthly Mag. iv. 1818, p. 41 *. 
Crotalus confluentus, Say, in Long’s Exped. Rocky Mount. ii. p. 48 
(1823) ; Baird § Gir. Cat. N. Am. Rept. p. 8 (1858), and in 
Marcy's Explor. Red Riv. > 217, pl. i. (1853) Dum. § Bibr. vii. 
. 1475, pl. Ixxxiv. b. fg. (1854) ; Baird, . OS. . Surv. 
he R. x., Rept. p. 40 (1859) ; Cope, Proc. Ac, Philud. 1859, p. 837 ; 
Garm, N, Am. Rept. p. 114 (1883); Stejneger, N. Am. Faun. 
no. 5, p. 111 (1891); Cope, Proc. U.S. Nat. Mus. xiv. 1892, p. 691 ; 
Stejneger, Rep. U.S. Nat. Mus. f. 1893, p. 440 (1895). 
oregonus, Holbr. N. Am. Herp., 2nd ed. iii, p. 21, pl. iii. 
(1842) ; Garm. N. Am, t. p. 178, 
lucifer, Baird § Gir. Proc. Ac. Philad, 1852, p. 177, and Cat. 
p. 6; Girard, U.S. Explor. Exped., Heaps . 187, pl. xv. figs. 1-6 
(1858) ; Baird, Rep. U.S, Expl, Surv. R. R x., Williamson's Rep. 
. 10, pl. xi. (1859) ; Cope, Proc. Ac. Philad. 1859, p. 837; Lord, 
Watur. Vane. Isl. ii, p. 803 (1866); Garm. 1. c. p. 114; Stejneger, 
N. Am. Faun. no. 5, p. 111, and Rep. U.S, Nat. es J. 1893, p. 445. 
— lecontei, Hallow. Proc, Ac. Philad, 1852, p. 180, and Rep. U.S, 
Surv. R. R. x., Williamson’s Rep. p. 18, pl. iti. (1859). 
atrox, Baird & Gir. Cat. pp. 5 & 156; Batrd, Rep, U.S. Mex. 
Bound. Surv., ii. Rept. p. 14, pl. i, (1859); Stejneger, Rep. U.S, 
Nat. Mus. f. 1898, p. 436. 
adamanteus, var. atrox, Jan, Rev. § Mag. Zool. 1859, p. 158, 
and Icon. Gén. 46, pl. ii. fig. 1 (1874); Garm., 1. ¢. p. 118; Cope, 
Proc. U.S. Nat. Mus, xiv. 1892, p. 690. 
— ee var. confluentus, Jan, Rev. § Mag. Zool. 1859, 
Cadieonn atrox, var. sonorensis, Kennicott, Proc, Ac. Philad. 1861, 
p- 206. ' 
Crotalus durissus (non L.), Wied, N. Acta Ac, Leop.-Carol, xxxii. i. 
1865, no. 8, p. 65. 
Caudisona Soph dia: Cope, Proc, Ac. Philad. 1866, p. 309, 
—— lucifer, Cope, 1. c. 
—— atrox, Cope, l. c. 
Crotalus confluentus ter ie. Cope, Proc. Ac. Philad, 1883, 
p. 11, and Proc, US, Nat. Mus. xiv. 1892, p. 691, 
exsul, Garm, l. c. p. 114. 
—— adamenteus ruber, Cope, Proc. U.S, Nat. Mus, xiv. 1892, 
p. 690 
* I have not been able to refer to this work. 
a 
