32 GEOLOGICAL SURVEY OF CANADA. 
This species abounds in the interior of the Northwest Terri- 
tories and on the shores of the Arctic Sea, where it breeds. 
(Richardson.) First observed in the Strait of Belle Isle on our 
outward passage in August, 1877 ; from this point northward they 
were constantly with us and extremely abundant until the ice 
covered the water ; they are altogether absent from Cumberland 
Gulf in spring and summer. (Kzwmelin.) 
MUSEUM SPECIMENS. 
In our egg collection we have two specimens, one taken on 
Disco Island, Greenland, by Inspector Anderson in 1894 ; another 
in Davis Strait ; both received from Prof. D’Arcy Thompson. 
40a. Pacific Kittiwake. 
Rissa tridactyla polliicaris Ripaw. 1884. 
Found along the coast of Vancouver Island and in the Gulf of 
Georgia. (Lord.) The entire coast line of Alaska, with all its 
numerous islands, both near the mainland and far out at sea, are 
inhabited by this beautiful gull ; it nests abundantly at the head 
of Norton Bay. (/Ve/son.) A common bird at St. Michael when 
the ice breaks up after the middle of May. The great breeding 
eround of the species is further south; on the Prybiloff Islands 
and some of the western Aleutian Islands this species breeds in 
thousands ; breeds sparingly at St. Michael. (Zzurner.) 
BREEDING Notes.—This bird has the same habits as R. brevi- 
rostris. \n building its nests it uses more grass and less mud- 
cement than that species does. The eggs are more pointed at 
the smaller end and lighter in ground colour, with numerous 
splotches of dark brown colour. (£//o@z.) 
MUSEUM SPECIMENS. 
Two fine specimens taken on St. Paul Island, Behring Sea, by 
Mr. J. M. Macoun. 
41. Red-legged Kitiwake. 
Rissa brevirostris (BRucH) LAwrR. 1858. 
Seen in considerable numbers at Unalaska, May 26, 1877; 
abundant on the Prybiloff Islands, especially on St. George 
Island, where they congregate in thousands and breed. (/Ve/son.) 
Not a common bird at St. Michael; the Aleutian and Prybiloff 
islands are its home. (Zwrner.) 
