11. LAcHESIs. 535 
2. Lachesis lanceolatus. 
Moreau de Jonnés, Monogr. Trigonoc, des Antilles (1816). 
P Vipera cerulescens, Laur. Syn. Rept. p. 101 (1768). 
? Coluber glaucus, Gmel. S. NV. i. p. 1092 (1788). 
P Coluber ambiguus, G'mel. t.c. p. 1104. 
Coluber lanceolatus, Lacép. Serp. ii. pp. 80, 121, pl. v. fig. 1 (1789). 
tigrinus, Lacép. t.c. pp. 82, 136. 
— brasiliensis, Lacép. t. c. pp. 98, 119, pl. iv. fig. 1. 
Vipera lanceolata, Latr. Rept. iii. p. 325 (1802); Daud. Rept. vi. 
p- 28 (1803). 
brasiliensis, Latr. op. cit. iv. p. 7; Daud. t.c. p. 86. 
Coluber megera, Shaw, Zool. iii. p. 406 (1802). 
P Vipera weigelii, Daud. t. c. p. b 
Trigonocephalus lanceolatus, Oppel, Ordn. Rept. p. 66 (1811); Sehleg. 
hys. Serp. ii. p: 536, pl. xix. figs. 3 & 4 (1837); Rufz, Enquéte 
Serp. Martin. (1843); Garm. Proc. Amer, Philos. Soc. xxiv. 1887, 
p. 285; W. Duncan, Proc. Bristol Natur. Soc. (2) vi. 1889, p. 44. 
—— tigrinus, Oppel, 1. c. 
Cophias lanceolatus, Merr. Tent. p. 155. 
atrox (non L.), Wied, Reise n. Bras, ii. p. 243 (1821). 
—— holosericeus, Wied, l.c., and Beitr. i. p. 490 (1825). 
Bothrops furia, Wagl. in Spix, Serp. Bras. p. 52, pl. xx. (1824). 
— leucostigma, Wagl. 1. c. p. 53, pl. xxi. fig. LE 
Cophias jararacca, Wied, Beitr. i. p. 470,and Abbild. (1825). 
Craspedocephalus lanceolatus, Fitzing. N. Class. Rept. p. 62 (1826) ; 
Gray, Cat. p. 5 (1849). 
jararaca, Fitzing. 1. c. 
weigelii, Frtzing. 1. c. 
Trigonocephalus jararaca, Schieg. 1. c. p. 532, pl. xix. figs. 1 & 2. 
Bothrops megera, Gray, Zool. Miscell. p. 47 (1842). 
—— subscutatus, Gray, 1. ¢. 
—— sabinil, Gray, l. c. 
cinereus, Gray, 1. c. 
Craspedocephalus atrox, part., Gray, Cat. p. 6. 
Bothrops lanceolatus, Dum. § Bibr. vii. p. 1505 (1854); Rufz, 
Enquéte Serp. Martin. 2nd ed, (1859) ; Jan, Icon. Gén. 47, pl. i- 
fig. 1 (1875); A. £. Brown, Proc. Ac. Philad. 1893, p. 435. 
jararaca, Dum. & Bibr. t. c. p. 1509 ; Jan, 1. ¢. pl. iii. figs. 1 & 2; 
Lacerda, Leg. Ven. Serp. Brés. p. 10 (1884); F. Miill. Verh. Nat. 
Ges. Basel, vii. 1885, p. 699; A. E. Brown, 1. c. 
Craspedocephalus brasiliensis, Wucherer, Proc. Zool. Soc. 1863, p. 52. 
Bothrops atrox, var. dirus, Jan, .c. pl. ii. fig. 1. 
brasiliensis, Cope, Journ. Ac, Philad. (2) viii. 1876, p. 182. 
Trigonocephalus atrox, Garm. NV. Am. Rept. p. 124 (1883). 
Bothrops jararacussu, Lacerda, l.c. p. 8. 
atrox septentrionalis, F. Miill. 1. c. 
Trigonocephalus caribbzus, Garm. Proc. Amer. Philos. Soc, xxiv. 
1887, p. 285. 
Bothrops glaucus, Vail. Bull. Soc. Philom. (7) xi. 1887, p. 48. 
—— atrox, part., Gunth. Biol. C-Am., Rept. p. 187 (1895). 
Snout rounded or obtusely pointed, with sharp, slightly raised 
canthus. Rostral as deep as broad; nasal divided; upper head- 
scales small, imbricate, more or less strongly keeled, in 5 to 10 
longitudinal series between the supraoculars, which are large; a 
