Sy. 
52 Dr. A. Giinther on new Species of Snakes 
Fig. 6. Cythere (Bairdia) inflata (Norman) : valvula sinistra. 
Fig. 7. Eadem, desuper spectata. 
Fig. 8. Eadem, ab imo spectata. 
Fig..9. Cythereis fimbriata (Roemer) : valvula sinistra. 
Fig. 10. Cythere marginata (Norman); valvula sinistra. 
Fig. 11. Eadem, desuper spectata. 
Fig. 12. Eadem, ab imo spectata. 
Fig. 13. Cythere badia (Norman): valvula sinistra. 
Fig. 14. Eadem, desuper spectata. 
Fig. 15. Eadem, ab imo spectata. 
Sedgefield, county Durham, 
December 6, 1861. 
XI.—On new Species of Snakes in the Collection of the British 
Museum. By Dr. Atbert GUNTHER. 
[Plates IX. & X.] 
Arter the arrangement of the Collection of. Ophidians in the 
British Museum had been completed (in 1858), it became pos- 
sible to devote particular attention to the acquisition of such 
species as were desiderata in that Collection. This object has 
met with great success, not only from the increased number of 
collections offered for sale, but also from the kind assistance of 
the keepers of several public collections, who gave up such spe- 
cimens as were duplicates, and of private gentlemen who had 
become interested in the subject. Among the former we must 
mention Th. J. Moore; Esq., of the Liverpool Museum; Prof. 
Aitken, Curator of the Museum of the medical officers at Fort 
Pitt; Prof. Peters of Berlin; and finally, the officers of the 
Smithsonian Institution : of the latter, G. Krefft, Esq. (Sidney) ; 
O. Salvin, Esq.; Dr. O. Wucherer; Capt. R. H. Beddome; Ch.N. 
Buller, Esq. ; J. Hi: Gurney, Esq.; O. Russell, Esq.; Consul 
Swinhoe, &c. 
It would require the space of a supplementary catalogue. to 
enumerate all the new accessions to the Collection in the course 
of the last three years; it must suffice here to give only a list of 
those species which had been desiderata, and of those which 
were new to science and have been described from Museum spe- 
cimens. It will be seen, from the lists appended, that 100 species 
have been added to the Collection. 
The Collection of Snakes in the British Museum contains 
now 611 species, and the typical specimens of 184 of them. 
I. List of Species which were formerly desiderata. 
*Loxocemus bicolor, Cope. G. Lenox Conyngham, Esq. 
“WWenona plumbea, B. & G. California. Smiths. Instit. 
Rhinophis oxyrhynchus, Schn. Ceylon. Purchased. . 
