104 AMARAL — NEW GENERA AND SPECIES OF SNAKES [^ol'.^in" 



about 9000-10,000 ft. altitude, by Mr. G. F. Eaton (Yale Peruvian Ex- 

 pedition). 



This Museum has two more specimens of B. andiana: one 

 of them, no. 8833, adult $ (total length, 503 mm. ; tail 69 mm.), 

 was collected at the same time and in the same place as no. 

 8832; the other, no. 12,415 (total length, 464 mm.; tail, 58 mm.), 

 was collected on October 30, 1915, in Machu Picchu, Cosireni 

 River, by Mr. Edmund Heller (Yale and National Geographic 

 Soc. Expedition), and was received from the U. S. National 

 Museum (no. 60,715). 



No. 12,415 had been identified with B. picta (Tschudi) ! by- 

 Thomas Barbour and G. K. Noble, 2 who considered it a local 

 race of B. lanceolata (Lacep.). But B. andiana differs from B. 

 picta by the shape of the snout, and of the rostral, the number 

 of upper labials, and of series of scales between the subocular and 

 the upper labials, the color and the markings. It rather agrees 

 with B. pulcher (Peters), 3 from which it can be distinguished, 

 however, by its lower number of ventrals, 4 different system of 

 markings and shape of the dorsal scales, of the snout, and of 

 the rostral shield. 



It is different from B. microphthalma Cope, 5 because of the 

 shape of the snout and rostral, 2d upper labial in connection 

 with the anterior border of the lorus, number of scale rows, 

 size of the eye, and keel of the dorsal scales. 



It is also different from Bothrops pleiiroxantha (Blgr.) 6 be- 

 cause of the lower number of scale rows, higher number of 

 ventrals, 2d upper labial in connection with the lorus and other 



1 J. J. v. Tschudi, Fauna Peruviana, Herpet., 1845, p. 61, pi. 10. 



1 Thomas Barbour and G. K. Noble, Proceedings of the U. S. National Museum, 1921, 

 Vol. 58, p. 620. 



» W. Peters, Monatschrift berlin. Akademie, 1862, p. 672. 



* Two female specimens existing in the British Museum Collection, and identified with 

 B. pulcher by G. A. Boulenger in Vol. Ill, p. 539, of his 'Catalogue of Snakes' (1896), seem 

 to be different from this species, because they have a higher number of scale rows (23 in- 

 stead of 21) and a lower number of ventrals (156-158, instead of 172, in spite of being 

 females). 



* E. D. Cope, Journ. Acad. Nat. Sci. Phila., 1876, Vol. 8, (2), p. 182. 



* G. A. Boulenger, Ann. Mag. Nat. Hist., (8), X. 1912, p. 423. 



