180 ANATID.E. 



and of a very light cream-colour. They measure from 2*05 to 2*4 

 in length, and from 1-52 to 1'75 in breadth. 



1. Argentine Republic. A. H. Holland, Esq. [C. 



1. Argentine Republic, 20th Oct. A. H. Holland, Esq. fC. 



6. Argentine Republic, Nov. A. H. Holland, Esq. [C. 



3. Chile. Crowley Bequest. 



9. Central Chile, Oct. Berkeley James Coll. 



1. Laid in confinement (Zool. Garden?, Zool. Society. 



London). 



Genus AYTHYA, Boie. 

 Aythya ferina (Linn.). 



Anas ferina, Thien. Fortpjlanz. ges. Vog. tab. Ixxix. fig. 2 (1845-54). 

 Fuligula ferina, Baedeker, Eier Er. Vog. tab. 23. tig. 1 (1855-63) ; 



Hewitson, Eggs of Brit. Bird*, ii. p. 423, pi. cxvii. fig. ii (1856) ; 



Tristram, Ibis, 1860, p. 81 ; Dresser, Birds Eur. vi. p. 551 (1878) ; 



Hume fy Marsh. Game. Bird* Ind. iii. p. 247 (1880) ; Seebohm, Brit. 



Birds, iii. p. 575, pi. 64 (1885) ; id. Eggs of Brit. Birds, p. 45, 



pi. 14. fig. 5 (1896). 



Nyroca ferina, Salvadari, Cat. Birds B. M. xxvii. p. 335 (1895). 

 Aythya ferina, Sharpe, Hand-l. i. p. 222 (1899). 



The eggs of the Common Pochard are mostly of an oval form and 

 some are elliptical They possess a considerable amount of gloss 

 and are of a greenish-drab or greyish-green colour. They measure 

 from 2-2 to 2-45 in length, and from 1-6 to 1-72 in breadth. 



2. Loch Awe, June (Hargitt Coll.). Seebohm Coll. 

 1. Dunvegen, Skye, 10th June (E. V. Seebohm Coll. 



Seebohm). 



1 . Hornsea Mere, Yorkshire ( Wolley Crowlev Bequest. 



Coll.). 



2. Merton, Norfolk, 14th May (H. Seebohm Coll. 



Seebohm). 



6. Tring, Hertfordshire, 27th June Seebohm Coll. 



(H. S.). 



7. Hertfordshire, 22nd May (H. J. Seebohm Coll. 



Elwes). 



8. Archangel (Piottuch). Seebohm Coll. 



8. Brandenburg, Germany, 2nd May. Crowley Bequest. 



5. Klosterhof, 4th June (Russow). Seebohm Coll. 



1. Zana, Algeria, 8th June (H. B. Crowley Bequest. 



Tristram). 



1. Zana, 10th June (H. B. Tristram). Crowley Bequest. 



Aythya americana (Bp.). 



^Ethyia americana, Baird, Breiver fy Ridgw. Water Birds N. Am. ii. 



p. 36 (1884). 

 Nyroca americana. Salvador'^ Cat. Birds B. M. xxvii. p. 340 (1895); 



Nehrk. Kat. Eiersamml. p. 246 (1899). 

 Aythva americana, Sharpe, Hand-l. i. p. 222 (1899). 



The eggs of the American Red-headed Pochard closely resemble 



