546 TIPEEIDJi). 



Bothriechis scutigera, Fisch. Arch. f. Nat. 1880, p. 218, pi. viii. 



fig. 8 & 9. 

 trianguligera, Fisch. Oster-Progr. Akad. Gymn. Hamburg, 1883, 



p. 13. 

 Bothriopsis scutigera, Cope, Bull. U.S. Nat. Mus. no. 32, 1887, 



p. 88_. 

 trianguligera, Ci^e, I. c. 



Snout broad, rounded, with well-marked canthus. Eostral 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 in a 

 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. Yentrals 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 ; beUy yellowish, more or less speckled 

 or spotted with grey or blackish. 



Total length 610 milHm. ; tail 60. 



Guatemala. 



a. $ (V. 142 ; C. 28). Totonicapam. 0. Salvin, Esq. [C.]. 



(Type.) 

 b~e. S (V. 138, 135 ; 0. Volcan de Puego. O. Salvin & F. D. God- 



27, 28) & S (V. 140, man, Esqs. [P.]. 



143; C. 22, 26). 



14. Lachesis lansbergii. 



Trigonocephalus lansbergii. Schlep. Mag. de Zool. 1841, Sept. pi. i. 

 Teleuraspis lansbergii, Cope, Proc. Ac. Philad. 1859, p. 339. 

 Bothrops lansbergi, Jan, Elenco, p. 127 (1863), and Icon. G4n. 47, 



pi. iv. fig. 1 (1876) ; Bocourt, Journ. de Zool. v. 1876, p. 410. 



ophryomegas, Bocourt, Ann. Sc. Nat. (5) x. 1868, p. 201. 



Porthidium lansbergii, Cope, Proc. Ac. Philad, 1871, p. 207. 



Bothriopsis ophryomegas, Cope, I. c. p. 208. 



Bothriechis lansbergii, part., Gunth. Biol. C.-Am., JRept. p. 190 



(1895). 

 ophryomegas, Gunth. I. c. p. 191. 



Snout pointed, with sharp canthus, turned up at the end, as in 

 Vipera aspis. Eostral once and one third to once and a half as 

 deep as broad ; nasal divided or semidivided ; a pair of raised 

 internasals ; Tipper head-scales small, imbricate, strongly keeled ; 

 supraoculars large, separated by 5 to 7 series of scales ; two or three 

 series of scales between the ej-e 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, 



