45 
Interior of British North America. 
5. Accipiter fuscus. 
Besides inhabiting the Saskatchawan Plains ( f 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 ‘ Pauna 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 ( f 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 lagopus . 
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 
