28 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 67 



Total length— 1450 mm.i^; tail 100 mm. 



Found in Tropical South America: Trinidad, Venezuela, Guianas, 

 Ecuador, Bolivia, Peru, N. Paraguay, N. Argentina ^^, and especially 

 in Brazil, where, however, it never occurs in the south beyond the 

 State of Sao Paulo. 



88. BOTHROPS ATROX (Linnaeus) 



Cohiber atrox Linnaeus, Syst. Nat., ed. 10, vol. 1, 1758, p. 222. 

 Lachesis lanceolatus Boulenger, Cat. Snakes Brit. Mus., vol. 3, 1896, p. 

 535 (in part). — Brazil, La Defence contre TOphidisme, 1914, p. 84 (part). 

 Lachesis atrox Boulenger, p. 537 (part). — Brazil, La Defence contre 



rOphidisme, 1914, p. 84. — Amaral, Ann. Mem. Inst. Butantan, vol. 



1, pt. 1, 1921, pp. 34 and 78. 

 Bothrops atrox Amaral, Copeia, No. 126, 1924, p. 19; Rev. Mus. Paulista, 



vol. 14, 1924, p. 39. 



Panama. — 3 specimens. 



Colombia.— 1 specimen. 



Ecuador. — A large series of specimens all having short and high 

 keels on the scales. 



Peru. — 1 specimen. 



Martinique. — 5 specimens, 



Santa Lucia. — 4 specimens. 



Tobago. — 2 specimens. 



Trinidad, — 5 specimens, 



French Guiana. — 1 specimen, 



Brazil. — 5 specimens. 



Paraguay (accidentally).— 1 specimen. 



All these specimens will be referred to in a more elaborate report 

 I am at present writing on the differences between the 3 species of 

 Neotropical Crotalidae, B. atrox (Linnaeus, 1758), B. jararaca 

 (Wied, 1824) and B. jararacussu Lacerda, 1884, 



89. BOTHROPS JARARACA (Wied) 



Cophias jararaca Wied, Isis, 1824, pt. 2, p. 1103; Abbild. Naturg. Brasil., 



1824, p. 7. 

 Lachesis lanceolatus Boulenger, Cat. Snakes Brit. Mus., vol. 3, 1896, p, 



535 (part). 

 Lachesis jararaca Amaral, Ann. Mem. Inst. Butantan, vol. 1, pt. 1, 1921, 



p. 34. 

 Bothrops jararaca Amaral, Copeia, vol. 126, 1924, pp. 19 and 78. 



Brazil. — 1 specimen, No. 40216 collected in Santa Catharina by 



Mr. Ehrhardt, 



1* Specimen No. 1308 Inst. Butantan, sont alive, from the locality Ventania, State of S. Paulo, in July, 

 1917, by Goncalves de Freitas. 



» Scrie in his " Catalogo de los Ofidios Argentines" states that this species is found from the Rio Negro 

 and Central Pampa to the North. 



