. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. POISONOUS SNAKES OF NORTH AMERICA. 451 Cooper, Proc. Calif. Acad. Nat. Hist., iv, p. 67 (1874).—Yarrow, Bull, U. S. Nat. Mils., No. 24, Check-list, pp. 12, 73 (1883).—Yarrow, iu Buck's Ref. Haudb. Med. Sc, vi, p. 166 (1888).—Carman, Rept. Batr. N. Am., I, Opliid., pp. 116, 175 (1883).—Garman, List N. Am. Rept. Batr., p. 35 (1884).—Stejneger, N. Am. Fauua, No. 7, Death Vail. Exp., p. 216 (1893).—Merriam, N. Am. Fauna, No. 7, p. 217 (1893).—C
. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. POISONOUS SNAKES OF NORTH AMERICA. 451 Cooper, Proc. Calif. Acad. Nat. Hist., iv, p. 67 (1874).—Yarrow, Bull, U. S. Nat. Mils., No. 24, Check-list, pp. 12, 73 (1883).—Yarrow, iu Buck's Ref. Haudb. Med. Sc, vi, p. 166 (1888).—Carman, Rept. Batr. N. Am., I, Opliid., pp. 116, 175 (1883).—Garman, List N. Am. Rept. Batr., p. 35 (1884).—Stejneger, N. Am. Fauua, No. 7, Death Vail. Exp., p. 216 (1893).—Merriam, N. Am. Fauna, No. 7, p. 217 (1893).—Caiidisonn cerastes Cope, in Mitchell's Res. Veu. Rattlesu., p. 124 (1861).—Cope, Proc. Phila. Acad., 1866, p. , Proc. Phila. Acad., 1867, p. 85.— Jliclimophrjis cerantcs CouES, in Wheeler's Surv. W. 100 Mer., v, p. 609 (1875). Fitjures: Hallowell, Pac. R. R. Rep., x, Williamson's Route, pi.,iv, fig. 1 (1859).—Baird, Pac. R. R. Rep., x. Reptiles, pi. xxxv, fig-. 4 (1859).—Baird, U. S. Mex. Bound. Surv., ii, Rept., pi. iii (1859).—Jan, Icon. Ophid., livr. 46, pi. Ill, fig. 5 (1874). Description.*—Head small, augles roaiided; nose, obtuse, mncli depressed; rostral as broad as high; nostril in the middle of a single large plate (tigs. 0(), G7). Lateral edge of superciliary plate (supraocular) elongated iuto a horn-like process directed upward over the eye. Two. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution. Board of Regents; United States National Museum. Report of the U. S. National Museum; Smithsonian Institution. Report of the Secretary. Washington : Smithsonian Institution
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