292 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



length (skins), 190-220 (202); wing, 110-118.5 (115); tail, 68.5-82.5 

 (74.5); culmen, 24-28 (26.7); tarsus, 20-21.5 (20.6); outer anterior 

 toe, 9.5-12 (10.5).'^ 



Adult female. — Similar to the adult male but without any yellow 

 on head, the entire pileum glossy blue-black, usually more or less 

 streaked or spotted with grayish white on forehead and crown, but 

 sometimes immaculate; length (skins), 181-199 (190); wing, 109-116 

 (111.9); tail, 69.5-77 (72.9); culmen, 22.5-26.5 (24.4); tarsus, 19-20 

 (19.7); outer anterior toe, 9.5-10.5 (10).^ 



Canadian Zone and part of Hudsonian Zone of North America, 

 chiefly east of Rocky Mountains; north to Labrador (Okak; Lance 

 au Loup; Black Bay; Maklovik River; Hopedale), northern Ungava 

 (Fort Chimo; Forks; Davis Inlet), Keewatin (Severn River; Fort 

 Churchill), and southern Mackenzie (Fort Simpson; Fort Franklin; 

 Fort Anderson; Great Bear Lake); west to Alberta (Smoky Trail; 

 15 miles west and 15 miles south of Henry House), British Columbia 

 (Ashmola River, September 30) , and eastern Idaho (west slope Bitter- 

 root Mountains, September;*^ breeding southward to Anticosti Island, 



« Twenty-one specimens. 

 6 Eighteen specimens. 



Locality. 



Outer 

 ante- 

 rior toe. 



MALES. 



Ten adult males from Maine (6), New Brunswick (1), and 

 New York (3) 



Two adult males from Newfoundland , 



Nine adult males from Quebec (1), Labrador (6), and Un- 

 gava (2) 



Ten adult males (P. a. fasciatus) from Mackenzie 



Twenty adult males (P. o. fasciatus) from Alaska (18) and 

 Yukon Territory (2) , 



Ten adult males (P. a. dorsalis) from Rocky Mountains of 

 United States , 



FEMALES. 



Ten adult females from New York (1), Maine (5), and New 

 Brunswick (4) 



Eight adult females from Labrador (4) and Ungava (4) 



Ten adult females (P. a. fasciatus) from Mackenzie (9) and 

 Athabasca (1) , 



Thirteen adult females (P. a. fasciatus) from Alaska 



Ten adult females (P. a. dorsalis) from Rocky Moimtains of 

 United States 



10.6 

 11.3 



9.2 

 10.4 



10.5 

 10.8 



9.9 

 10 



9.7 

 10.1 



10.6 



c The occurrence in far western localities, well within the range of P. a. fasciattis, 

 of perfectly typical examples of P. a. americanus, is very puzzling. Except those 

 found in southern Mackenzie, however, such specimens are all fall or winter birds, 

 and may be migrants. The specimen from the Bitterroot Mountains is even an 

 extreme example of P. a. americanus. 



