COLYMBIDvE. ALCID^E. 417 



Genus COLYMBUS. 



1191. Colymbus glacialis, Linn. Great Northern Diver. 

 Hab. British Islands. 



a. Presented by A. R. Hunt, Esq., Jan. 6, 1870. See P. Z. S. 

 1870, p. 86. 



Family ALGID^E. 

 Genus ALCA. 



1192. Alca tor da, Linn. Razorbill. 

 Hab. British Islands. 



a. Presented by P. W. Symonds, Esq., July 28, 1864. 

 6, c. Presented by T. Walker, Esq., June 11, 1868. 



Genus FRATERCULA. 



1193. Prater cula arctica (Linn.). Puffin. 

 Hab. British Islands. 



a, b. Presented by T. Walker, Esq., June 11, 1868. 

 c. Received in exchange, March 31, 1870. 



Genus URIA. 



1194. Uria troile, Linn. Common Guillemot. 

 Hab. British Isles. . 



a, b. Presented by W. H. Scratten, Esq., F.Z.S., Sept. 25, 



1872. 



c-e. Purchased, Aug. 21, 1873. 

 f-k. Presented by Sir H. Dalrymple, Bart., July 22, 1874. 



