LIST OF PRINCIPAL AUTHORITIES CITED. 
Arctic Manual and Instructions for the Arctic Expedition, 1875. 
Brooks, Allan. Various papers on British Columbia Birds in the 
Auk and the Ottawa Naturalist. 
Bigelow, Henry B. Birds of the Northeastern Coast of Labrador, 
The Auk, vol. xix. 
Boutelier, Jas. Lists of the Birds of Sable Island in The Ottawa 
Naturalist. 
Bent, A. C. Birds of Southwestern Saskatchewan, The Auk, vol. 
SEG. 
Bishop, Louis B. Birds of the Yukon Region, N. A. Fauna, No. 19. 
Chamberlain, Montague. A Catalogue of Canadian Birds, 1887. 
Coues, Elliott. Field Notes on Birds observed along the 49th 
Parallel, 1873-74. 
Chapman, Frank. Birds collected in Alaska by the Andrew J. 
Stone Expedition of 1901-1903. 
Dionne, C. E. Catalogue of the Birds of Quebec, 1889. 
Downs, Andrew. Catalogue of the Birds of Nova Scotia, 1887. 
Elliott, Henry W. Report on the Seal Islands of Alaska, 1884. 
Fannin, John. A Preliminary Catalogue of the Birds of British 
Columbia, 1889. 
Fleming, James H. Birds of Torento, Ont. The Auk, vols. XXilj 
and xxiv. 
Grinnell, Joseph. Birds of Kotzebue Sound, Alaska; Birds of 
Sitka, Alaska. 
Hagerup, Andras. The Birds of Greenland, 1891. 
Kumlien, Ludwig. Contribution to the Natural History of Arctic 
America, 1879. 
Lord, John K. A Naturalist in British Columbia, 1866. 
Macfarlane, Roderick. Proc. U. S. Nat. Mus., vol. xiv., 1891. 
MclIlwraith, Thomas, Birds of Ontario, 1884. 
