174 PAPERS, ETC. 
108.—L. argentatus.— Herring Gull. 
Breeds annually, though I fear in decreasing numbers, 
on the Steep Holmes, eggs hardly to be distinguished 
£rom those of the lesser black-backed gull, the egg of 
which however has the larger spots of the two. 
109.—-L. fuscus.— Lesser Black-backed Gull. 
This species breeds also on the Holmes; the eggs are greyish 
brown, spotted and blotched with darker, 23 inches 
by 2 inches in breadth. 
