4-J CATALOGUE OF 



heed whatever to the statements made in the Catalogue re- 

 garding eggs, unless these have also been identified by other 

 naturalists. Thus, for example, the following is entered in 

 the Benzon Catalogue: 



Eggs of Una troile (two eggs from Julianeshaab) ; Q-avia 

 alba (one egg from Greenland Holboll) ; Aythya marila 

 (one hatch of eggs from Christianshaab, 1872) ; Chen hyper- 

 borea (two hatches of eggs from Egedesminde, 1875) ; Branta 

 leucopsis (one egg from Egedesminde) ; Numenius borealis (?) 

 (one egg from Egedesminde, 1865). 



On the other hand, when I have found sufficient data in 

 Benzon's Catalogue and in my own notes from Greenland, 

 I have added the dates when the eggs were found first, and 

 when last. 



I would also note that when a bird is said to breed " every- 

 where," I mean, of course, in any suitable locality. 



I have noted here only unpublished reports regarding the 

 occurrence of the rarer birds in Greenland, and for further 

 information I njust ask my readers to consult the works of 

 the authors named above. 



1. Holboll's Grebe. (Colymbus holbcellii.) 

 Occasional visitor. 



2. Homed Grebe. ( Colymlus auritus.) 



Occasional visitor. Benzon obtained the skin of a young 

 bird taken at Godthaab, 1877. 



[Reinhardt reports taking one example of this species in 

 young plumage, and Newton states that a " few immature 

 specimens have been obtained in the southern part of Green- 

 land." We might expect to find it breeding there, as eggs 

 taken on the Yukon River are in the National Museum at 



