viii LIST OF PRINCIPAL AUTHORITIES CITED. 
Murdoch, John. Report of the Expedition to Point Barrow, Alaska, 
1885. 
Nelson, E. L. Report upon Natural History Collections in Alaska, 
between 1877-81. 
Osgood, W. H. Birds of Queen Charlotte Islands, B.C.; and Cook’s 
Inlet, Alaska, N. A. Fauna, No. 21. 
Packard, A. S. The Labrador Coast, 1891. 
Preble, E. A. Birds of Keewatin, N. A. Fauna, No. 22. 
Raine, Walter. Bird Nesting in Northwest Canada, 1892. 
Reeks, Robert. Notes on the Birds of Newfoundland, Canadian 
Naturalist, new series, vol. v., 1870. 
Richardson, Sir John. Fauna Boreali-Americana, 1851. 
Ridgway, Robert, Birds of North and Middle America, 1901-1908. 
Rhoads, Samuel. Notes on British Columbia Birds. 
Ross, Bernard. On the Birds of the Mackenzie River District, 
Canadian Naturalist, vol. vii., 1862. 
Seton, E. T. The Birds of Manitoba, 1891; Bird Records from 
Great Slave Lake, The Auk, vol. xxv. 
Streator, Clark P. Ona Collection of Birds made in British Columbia 
in 1889. . 
Stone, Witmer. Birds of North Greenland. 
The A. O. U. Check-list of North American Birds and Supplements. 
Turner, Lucien M. Contributions to the Natural History of Alaska, 
1886: List of the Birds of Labrador, 1885. 
Winge, Herlof. Conspectus of the Birds of Greenland, 1898. 
Wintle, Ernest D. The Birds of Mentreal, 1896. 
