COLYMBID^E. ALCID^I. 541 



1410. Colymbus arcticus, Linn. Black-throated Diver. 

 Hab. British Islands. 



a. Purchased, Dec. 28, 1881. 



1411. Colymbus septentrionalis (Linn.). Red-throated Diver. 

 Hab. Europe. 



a. Presented hy J. S. Thompson, Esq., April 8, 1879. 



b. Deposited, Nov. 20, 1879. 



c. Purchased, Dec. 13, 1880. 



d. e. Purchased, Feb. 2, 1881. 

 /, g. Purchased, Nov. 5, 1881. 

 h. Purchased, Nov. 24, 1881. 

 i. Purchased, Nov. 11, 1882. 



Family ALCID^E. 



Genus ALCA. 



1412. Alca torda, 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. 



d. Presented by W. Thompson, Esq., Jan. 7, 1877. 



e. Purchased, Dec. 3, 1880. 



/, g. Purchased, Nov. 24, 1881. 

 h, i. Purchased, Dec. 1, 1881. 



Genus LOMVIA. 



1413. Lomvia 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-l\ Presented by Sir H. Dalrymple, Bart., July 22, 1874. 

 l-r. Presented by Sir H. Dalryrnple, Bart., Aug. 5, 1876. 

 s-x. Presented by Sir H. Dalrymple, Bart., July 27, 1878. 



