Interior of British North America. 45 



5. ACCIPITER FUSCUS. 



Besides inhabiting the Saskatchawan Plains (* Ibis/ vol. iii. 

 p. 317), there are specimens of the Sharp-shinned Hawk in the 

 Smithsonian Institution from Red River Settlement, and from 

 between Hudson^s Bay and Lake Winipeg, while Mr. Bernard 

 Ross obtained it on the Mackenzie. 



6. BUTEO SWAINSONII. 



This bird, of which I have recorded several examples from the 

 Saskatchawan in my first paper (' Ibis/ vol. iii. p. 317), is figured 

 in the ' Fauna Bor.-Am.' as Buteo vulgaris. Mr. Bernard Ross 

 found it more rare to the northward, in the Mackenzie River 

 district. 



7. Buteo borealis. 



Besides my record of the Red-tailed Buzzard (' Ibis,^ vol. iii. 

 p. 318), I find that it is mentioned in the ' Fauna Bor,-Am.^ as 

 having been shot also on Hudson's Bay. 



Buteo bairdii, from the localities in which it has already been 

 found, as well as B. montanus (the Western Red-tail) (which I 

 find Mr. Ross has obtained, but I am not aware of the locality), 

 may be looked for on the plains west of Lake Winipeg ; but 

 B. lineatus appears to be an eastern bird. 



Buteo pennsylvanicus. 



A specimen from the southern extremity of Hudson's Bay, 

 on the authority of the ' Fauna Bor.-Am.,' brings the Broad- 

 winged Hawk within the limits of this paper, but it appears pro- 

 perly to belong to the eastern side of the continent. 



8. Archibuteo lag opus. 



I here introduce this bird because it stands recorded as an 

 inhabitant of the "interior of British North America," on the 

 authority of a specimen killed by Mr. Drummond on the eastern 

 slope of the Rocky Mountains, in latitude 55° (' Fauna Bor.-Am.' 

 pi. 28), and is given by Mr. Ross as common on the Mac- 

 kenzie. I have also seen specimens in the plumage of the figure 

 above mentioned from Hudson's Bay, and frequently observed 

 others in a wild state, though I never procured a specimen. 

 Moreover, Professor Baird feels assured of its existence, and 



