COLUBRID.E. 463 



179. Tropidonotus leberis (Linn.). Seven-banded Snake. 

 Hab. North America. 



a, b. Purchased, Aug. 6, 1872. 



c-i. Bred in the Gardens, Aug. 27, 1872. 



Genus ISCHNOGNATHUS. 



180. Ischnognathus occipito-maculatus (Storer). Spotted- 



headed Snake. 



Hab. Nova Scotia. 



a-f. Presented hy A. Downs, Esq., C.M.Z.S., Oct. 3, 1871. 



Genus TRETANORHINUS. 



181. Tretanorhinus nigroluteus, Cope. Black-and-Yellow 



Snake. 



Hab. Central America. 



cr. Purchased, Sept. 12, 1871. From Monkey Hill, near Colon. 

 See Giinther, Ann. & Mag. N. H. ser. 4, vol. ix. p. 27. 



Genus HETERODON. 



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



snouted Snake. 



Hab. Madagascar. 



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



Genus PITUOPHIS. 



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

 Hab. California. 



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



Genus COLUBER. 



184. Coluber quadrilineatus, Pall. Four-lined Snake. 

 Hab. Egypt. 



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



c. Presented by A. C. Wright, Esq., May 23, 1873. From 

 Malta. 



