546 VIPERIDZ. 
Bothriechis scutigera, Fisch. Arch. f. Nat. 1880, p. 218, pl. viii. 
fig. 8 & 9. 
—— trianguligera, Fisch. Oster-Progr. Akad. Gymn. Hamburg, 1883, 
13. 
Bothriopsis scutigera, Cope, Bull. U.S. Nat. Mus. no, 32, 1887, 
88. 
P- 
—— trianguligera, Cope, /. e. 
Snout broad, rounded, with well-marked canthus. Rostral as 
deep as broad or a little broader than deep; nasal divided ; upper 
head-scales imbricate, feebly or moderately keeled, subequal or with 
a few enlarged shield-like ones on the vertex; 5 to 7 scales ina 
transverse series between the supraoculars, which are large; two 
series of scales between the eye and the labials; temporal scales 
keeled ; loreal pit separated from the labials by small scales ; 9 or 
10 upper labials, the three anterior smallest. Scales strongly and 
sharply keeled, in 21 rows. Ventrals 135-142; anal entire; 
subcaudals 22-34, single. Brown above, with or without a dorsal 
series of large darker spots and two lateral series of dark brown or 
blackish alternating spots, the lower on the ventrals and lost on 
the anterior half of the body; a dark streak from the eye to a little 
beyond the angle of the mouth ; belly yellowish, more or less speckled 
or spotted with grey or blackish. . 
Total length 610 millim.; tail 60. 
Guatemala. 
a. 9 (V. 142; C. 28). Totonicapam. 0. gecites. Esq. [C.}. 
(Type.) 
b-e. g (V. 138,135; C. Volcan de Fuego. O. Salvin & F. D. God- 
27,28) & 2 (V. 140, man, Esqs. [P.]. 
143; C. 22, 26), | 
14. Lachesis lansbergii. 
Trigonocephalus lansbergii, Sch/eg. Mag. de Zool. 1841, Rept. pl. i. 
Teloorasyie lansbergii, tas Pas Ac, Philad, 1859, p. "839, F 
Bothrops lansbergi, Jan, Elenco, p. 127 (1863), and Icon. Gén. 47, 
pl. iv. fig. 1 (1875); Bocourt, Journ. de . v. 1876, p. 410. 
—— ophryomegas, Bocourt, Ann, Se. Nat. (5) x. 1868, p. 201. 
Porthidium lansbergii, Cope, Proc. Ac, Philad, 1871, p. 207. 
Bothriopsis ophryomegas, Cope, 1. ¢. p. 208. 
Boies lansbergii, part., Giinth. Biol. C.-Am., Rept. p. 190 
(1895) 
—— ophryomegas, Giinth. 1. c. p. 191. 
Snout pointed, with sharp canthus, turned up at the end, as in 
Vipera aspis. Rostral once and one third to once and a half as 
deep as broad; nasal divided or semidivided; a pair of raised 
internasals ; upper head-scales small, imbricate, strongly keeled ; 
supraoculars large, separated by 5 to 7 series of scales ; two or three. 
series of scales between the eye and the labials; temporal scales 
keeled ; 8 to 10 upper labials, none bordering the loreal pit, fifth, 
fourth and fifth, or fifth and sixth largest. Scales strongly keeled, 
