BIRDS AND MAMMALS OF EAST SIBERIA [^Vof.'v^' 



Lagopus rupestris rupestris (Gmelin)? 



One adult was taken, June 29, 1912, at Troyan Bay, Kolyma. 

 One other was seen at Sucharina, Kolyma, June 24, 1912. The 

 species was also observed on Big Diomede Island. The one speci- 

 men was afterwards lost, and the subspecies must therefore be 

 given with some doubt. 



Tetrao parvirostris parvirostris Bp. 



Two adult males of this fine species were taken, one at Nijni 

 Kolymsk, January 15, the other at Pontelij, Kolyma, March 25. 

 Near the coast the capercailzie was scarce, but it was reported to 

 be abundant in the hilly forest land of the upper Kolyma. 



Gaviidae. 



Gavia adamsi (Gray). 



The yellow-billed loon is common along the Arctic coast of East 

 Siberia. It seems to prefer drift-ice, and was very numerous 

 between the mouth of the Kolyma River and Chaun Bay, swim- 

 ming among the ice. It was observed once only in a lake, — July 

 20, 1912. A skin, however, was seen in the possession of a native 

 at Shornoy Myss, a point about three hundred miles up the Kolyma 

 River. No nests, nor young birds, were found during the trip, and 

 no specimens were taken. 



Gavia arctica (Linn.), 



The black-throated loon was twice found breeding. On July 12, 

 1912, thirty miles east of Cape Bolshaja Baranov, two slightly 

 incubated eggs were found on the bare ground, with no nest, at the 



