498 
LARIDAL 
NAT A TORES. 
LA RID 
ICELAND GULL. 
Larus leucopterus. 
PLATE CXXXIX. FIGS. I. AND II. 
A numerous series of the eggs of this species have 
heen sent to this country by M. Holbcell, the author of 
the “Fauna Groenlands.” The } 7 differ little, if at all, 
from eggs of the lesser black-backed and herring gulls; 
they are, perhaps, usually somewhat larger than those of 
the lesser black-backed gull, and thus more closely re¬ 
semble eggs of the herring gull. Those figured are in the 
collection of Mr. Bond. The first figure will represent 
any of the three species I have named; the second is 
marked like eggs of the common gull, but I do not re¬ 
member to have seen eggs like it amongst those of the 
herring and lesser black-backed gulls. 
Captain James C. Boss says that this species breeds 
on the face of the same precipice with the glaucous gull, 
but at a much less height, and in greater numbers. 
