146 Mr. Dovcras on some Species 
This species appears to be an inhabitant of a more temperate 
climate than the preceding one, as it is never seen higher than 
42° north latitude, and even that very sparingly in comparison 
to O. picta or O. Californica. The species do not associate 
together. In manner they are similar, at least as far as the 
opportunity I had of observing them went. I have never seen 
them but in winter dress, and know nothing of their nesting. 
Mr. Vigors, the zealous and enlightened Secretary of the 
Zoological Society, in his partial kindness has done me the 
honour of placing my name to this species. To that gentle- 
man I communicated an account of this bird shortly after my 
return to England; and subsequently he has had an opportunity | 
of seeing a solitary specimen in a collection brought home by 
"ings — 
— 9 
m cim 
SO pana tem S 
In addition to Tetrao, I subjoin a few notes relative to some 
already described species. But, in the first place, I may be 
permitted to mention a new species, nearly allied to T. Lago- 
pus, but much smaller, with a white tail, and when in winter- 
dress, snow-white, without the least particle of black. "This is 
an inhabitant of the Rocky Mountains and the snowy peaks of 
North-west America. During my journey across the dividing 
. ridge in April 1827, I killed several, which, from the extreme 
difficulties to be surmounted at that early season of the year, I 
was reluctantly obliged to leave behind me. This loss I do 
not now regret, as Dr. Richardson was fortunate enough to 
secure the species, an accurate description of which will be 
Apei ey by. bimi in his enigi Fauna of Britai North 
Ameria T 
z; Lagopuec® Gmelin i is not an uncommon Edo on ae Rocky 
Mountains ; near the verge of perpetual snow, in latitude 54°; 
to 
