BROOKS: BIRDS FROM EAST SIBERIA AND ARCTIC ALASKA. 375 
Though there is no data to determine the range of this species it 
must be a very boreal form, and perhaps comparatively small in 
numbers. The Alaskan specimens may have wandered from Elles- 
mere Land, but it seems reasonable to believe that the bird may 
inhabit Prince Patrick, Melville or Bathurst Islands, nearly all this 
territory being north of 75°. 
LARUS HYPERBOREUS Gunnerus. 
GLAUCOUS GULL. 
Glaucous Gulls were moderately common on the Arctic coast of 
Alaska, and young in the down were found at Camden Bay and on the 
mainland near Herschel Island. 
None were seen at Demarcation Point in the spring of 1914 until 
May 14. After that two or three might be seen flying oe over the 
tundra about every day, but no nest was found. 
PAGOPHILA ALBA (Gunnerus). 
IVORY GULL. 
We did not see this bird alive and our collection contains only one 
specimen. It is an adult female found by an Eskimo in a trap he 
had set for white foxes about five miles out on the ice. It was taken 
November 25, 1913, five days after the sun had gone, but seemed fat 
and in good condition. 
Murdoch rarely saw this species at Point Barrow. 
RIssSA TRIDACTYLA POLLICARIS Ridgway. 
PACIFIC KITTIWAKE. 
We found the Pacific Kittiwake common on the Commander Islands 
and east coast of Kamchatka during the first three weeks of May. 
It was very abundant about Bering Straits and extreme eastern 
Siberia. 
We took specimens at Copper Island, Cape Shipunski, Indian Point, 
and East Cape. 
