8 Catalogue of Canadian Birds. 



Rissa tridactyla pollicaris. 



PACIFIC KITTIWAKB. 



This is the form of the Kittiwake that occurs on the west 

 coast of Vancouver Island {Fa7ini?i), and north to Bering's Sea. • 



Larus glaucus. 



GLAUCOUS GULL. 



The older authors called this bird the " Burgomaster.'' It is 

 an Arctic species, but a few examples are found in winter along 

 the Atlantic coast of the Maritime Provinces, and in the Great 

 Lakes. It is found, also, in winter, on the west coast of Van- 

 couver Island. 



Larus leucopterus. 



ICELAND GULL. 



This was formerly known as the " White-winged " Gull. It 

 is an Arctic species, and is found, in winter only, along the 

 Atlantic coast of the Maritime Provinces, straying occasionally 

 to the Great Lakes. 



Larus glaucescens. 



GLAUCOUS-WINGED GULL. 



A Pacific species that occurs along the coast from "Alaska 

 south to California.'' Mr. Fannin has observed it only on the 

 north-west shore of Vancouver, but Dr. Dawson took it at Cul- 

 len Harbour, Queen Charlotte Sound ( IVhiteaves). 



Larus kumlieni. 



KUMLIEN'S GULL. 



A few examples of this lately described Gull have been taken 

 in the Bay of Fundy in winter. Kumlien found it breeding in 

 Cumberland Bay, where it is quite common. 



