COLUBRIDjE. 615 



Genus LIOHETERODON. 



283. Lioheterodon madagascariensis (Dum. & Bibr.) . Sharp- 



nosed Snake. 



Hob. Madagascar. 



(See ed. 8, p. 608, Ueterodon madagascariensis.) 



Genus HELICOPS. 



284. Helicops leopardinus (Schleg.). Leopard Snake. 

 Hab. Guiana and Brazil. 



a. Purchased, July 23, 1889. 



Genus TRETANORHINUS. 



285. Tretanorhinus nigroluteus, Cope. Black-and- Yellow Snake. 

 Hab. Central America. 



(See ed. 8, p. 608.) 



Genus ISCHNOGNATHUS. 



286. Ischnognathus dekayi, Holbr. Dekay's Snake. 

 Hab. North America. 



(See ed. 8, p. 607.) 



a-y. Presented by S. Garman, Esq., C.M.Z.S., May 17, 1886. 

 h-m. Eeceived in exchange, Oct. 24, 1887. 



287. Ischnognathus octipito-maculatus (Storer). Spot-headed 



Snake. 



Hab. N. America. 

 (See ed. 8, p. 607.) 



Genus ABLABOPHIS. 



288. Ablabophis rufulus (Licht.). Rufous Snake. 

 Hab. South Africa. 



(See ed. 8, p. 602, Ablabes rufulus.) 



a. Presented by the Eev. G. H, E, Fisk, C.M.Z.S., Feb. 27, 



1888. 



