11. LACHE8IS. 547 



in 25 to 27 rows. Ventrals 152-159 ; anal entire ; subcaudals 

 29-35, single. Yellowish brown, pale brown, or grej' above, with 

 a dorsal series of large dark brown black-edged rhomboidal or 

 squarish spots, usually divided by a narrow yeUow or orange verte- 

 bral line ; sides of head blackish ; belly powdered with brown, with 

 or without whitish spots. 



Total length 575 millim. ; tail 70. 



From Southern Mexico to Colombia, Venezuela, and Brazil. 



a. S (Sc. 25 ; V. 152 ; 0. Yucatan. 



36). 

 4-(i. Hgr. (Sc. 26, 25, 27 ; Ghiriqui. F. D, Godman, Esq. 



V. 159, 155, 155; 0.32, [P-l- 



34, 29). 

 e,/. cf (Sc. 25, 25; V. Carthagena, Colombia. Capt. Garth [P.]. 



153,152; C.?, 35). 



15. Lachesis brachystoma. 



Teleuraspis castelnaui, var. brachystoma, Cope, Proc. Ac. Philad. 



1859, p. 389. 

 Bothriechis brachystoma, Cope, Froc. Ac. Philad. 1861, p. 295. 

 Bothrops lansbergii (non Schleg.), Oiinth. Ann. ^ Mag. N. H. (3) 



xii. 1863, p. 350; F. Mull. Verh. Nat. Ges. Basel, vi. 1878, 



p. 703. 

 nasutus, Bocourt, Ann. Sc. Nat. (5) x. 1868, p. 202, and Journ. 



de Zool. V. 1876, p. 410. 

 Porthidium nasutus, Cope, Proc. Ac. Philad. 1871, p. 207, and Proc. 



Amer. Philos. Soc. xviii. 1879, p. 271. 

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

 proboscideus, Cope, Journ. Ac. Philad. (2) viii. 1876, p. 150, 



pi. xxvii. fig. 3. 

 Bothrops brachystoma, Bocourt, Journ. de Zool. v. 1876, p. 410. 

 Thanatophis sutus, Posada-Arango, Bull. Soc. Zool. France, 1889, 



p. 344. 

 Bothriechis lansbergii, part., Oiinth. Biol. C.-Am., Bept. p. 190 



(1895). 



Closely allied to the preceding, but snout much produced above, 

 as in Vipera latastii, and rostral once and two thirds to twice 

 as deep as broad. Scales in 23 (rarely 25) rows. Ventrals 132- 

 150 ; subcaudals 27-38. 



Total length 600 millim. ; tail 50. 



Southern Mexico and Central America. 



a. c? (V. 144 ; C. 38). Tehuantepec. M. Sumichrast [C.]. 



b-c. d (V. 139 ; 0. 36) Vera Paz, low forest. 0. Salvin, Esq. [0.]. 



& $ (V. 142; C. 30). 



d-f. 2 (V. 139, 133 ; 0. Hacienda Eosa de Dr. E. Rothschuh 



28, 28) & hgr. (V. 136 ; Jericho, Nicaragua, [0.]. 



C. 33). 3250 ft. 



g. Hgr. (V. 137 ; C. 28). Chontalez, Nicaragua. 



A. Hgr. (V. 142; 0.27). Colombia. Mr. F. A. Simons 

 ^ [C.]. 



2n2 



