COLUBRID^E. 517 



Genus TRETANORHINTJS. 



195. TretanorhinusnigroIuteus,Coipe. Black-and- Yellow Snake. 

 Hab. Central America. 



a. Purchased, Sept. 12, 1871. Prom Monkey Hill, near 

 Colon. See Giinther, Ann. & Mag. N. H. ser. 4, vol. ix. 

 p. 27. 



Genus HETERODON. 



196. Heterodon platyrhinos, Lath. Hog-nosed Snake. 

 Hab. North America. 



a. Presented by Dr. E. Painter, E.Z.S., May 17, 1877. 



197. Heterodon d'orbignyi, Dum. & Bibr. D'Orbigny's Snake. 

 Hab. South America. 



a. Purchased, Oct. 24, 1878. 



198. Heterodon madagascariensis, Dum. & Bibr. Sharp- 



snouted Snake. 

 Hab. Madagascar. 

 a. Presented by E. Newton, Esq., C.M.Z.S., Nov. 27, 1863. 



Genus PITUOPHIS. 



199. Pituophis catenifer (Blainv.). Chained Snake. 

 Hab. California. 



a. Presented by A. Eorrer, Esq., Aug. 20, 1873. 



Genus COLUBER. 



200. Coluber asculapii, Sturm. JEsculapian Snake. 

 Hab. Central Europe. 



a-d. Received in exchange, Sept. 21, 1868. 

 ,/. Purchased, June 6, 1871. Erom Dalmatia. 

 g. Presented by GK E. Eenton, Esq., Aug. 31, 1877. 



201. Coluber quadrilineatus, Pall. Eour-lined Snake. 

 Hab. Europe and Asia. 



a, b. Purchased, Aug. 8, 1863. 



