PSEUDURIA. PTYCHORHAMPHUS. 171 



Genus PSEUDURIA, Sharpe. 



Pseuduria columba (Pall.}. 



Cepphus columba, Baird, Breicer $ Ridyw. Water Birds N. Am. ii. 



p. 494 (1884). 



Una columba, Grant, Cat. Birds B. M. xxvi. p. 586 (1898). 

 Pseuduria columba, Sharpe, Hand-l. i. p. 131 (1899). 



The eggs of the Pigeon Guillemot do not differ in any way from 

 those of Cepphus grylle. 



1. Rosario Channel, Vancouver Island, Yoy. II. M.S. ' Plumper.' 



8th June (Dr. Lyall). 



2. Rosario Channel, 10th June (Dr. Voy. H-M.S. ' Plumper.' 



Lyall). 

 r>. Waldron Island, Vancouver Island Voy. H.M.S. < Plumper.' 



(Dr. Lyall). 

 4. Waldron Island, 23rd June (Dr. Voy. H.M.S. ' Plumper.' 



Lyall). 

 2. Santa Cruz Island, California, 5th Salvin-Godman Coll. 



June (Henshaiu Coll,}. 

 1. Lake Begles, California (F. Gruber). Purchased. 



Pseuduria snowi (Stejn.). 

 (Plate XII. fig. 6.) 



Uria columba, Blakiston $ Fryer, Trans. As. Soc. Jap. x. p. 91 (1882) ; 



Seebohm, Ibis, 1884, p. 174. 



Alca columba, Seebohm, Birds Japan. Emp. p. 275, part. (1890). 

 Uria snowi, Grant, Cat. Birds B. M. xxvi. p. 588 (1898). 

 Pseuduria snowi, Sharps, Hand-l. i. p. 131 (1899). 



The single egg of Snow's Guillemot in the Collection resembles 

 some of the eggs of Cepphus grylle. The ground is of a pale 

 blue, and this is marked pretty evenly all over with blotches 

 and spots of chocolate-brown and pale purple. It measures 

 2-45 by 1-53. 



1. Kurile Islands, Japan (H. J. Snoiv). Seebohm Coll. 



Sub-Family FRATERCULINJE. 

 Genus PTYCHORHAMPHUS, Brandt. 



Ptychorhamphus aleuticus (Pall.). 

 (Plate XII. fig. 5.) 



Ptvchorhamphus aleuticus, Baird, Brewer $ Ridr/w. Water Birds N. Am. 

 * ii. p. 517 (1884) ; Grant, Cat. Birds B. M. xxvi. p. 599 (1898) ; 

 Sharpe, Hand-l. \. p. 132 (1899). 



The eggs of the Aleutian Auk are of a broad oval form, cbalky 



