394 ON THE BIRDS OF THE GENUS TETRAO. 



Winter plumage snowy white, no black band through the 

 eye : summer, reddish chesnut, mottled with black ; throat 

 unspotted. 



Female hardly differing from the male in summer, and 

 perfectly similar in winter. 



White, and Rehusac Grouse, Lath. Tetrao saliceti, Temm. 

 Frisch. pi. 110 & 111. White Partridge, Edw. Glean, pi. 

 72, male moulting. 



Inhabits the Arctic regions of both continents, to the very 

 pole ; scarcely ever seen even on the highest mountains of 

 Central Europe; common in Lapland, Iceland, Greenland, 

 and Kamschatka : found also at Hudson's Bay, and on the 

 northern side of Lake Superior. 



