OF THE GEXVS TETRAO. 393 



Confined to Arctic countries, or the regions of perpetual 

 snow. Dwell in forests chiefly composed of pines: never 

 alight on trees; fond of rocks. Collect in large ilocks. Mono- 

 gamous, pairing in spring. 



11. Telrao scotictts, L. 



Reddish chesnut: feathers of the feet gray; tail of sixteen 

 feathers, the lateral blackish, tipped with reddish: primaries 

 sooty black; eyebrows papillous, elevated, denticulated. 



Female: duller, more mottled. 

 Winter and summer plumage alike. 

 Bed Grouse, Lath. Lagopus seotieus, Vieill. Gal. Ois. pi. 

 121. 

 Inhabits the British Islands: common in Scotland. 



12. Telrao lagopus, L. 



Feathers of the feet snow-white ; tail of eighteen feathers, 

 the lateral black; bill moderate, compressed at the point; 

 nails black, subulate, arcuated. 



Winter plumage, snow-white: summer, reddish-gray mot- 

 tled with black. 



Male; a black band through the eye. which the female is 

 without. 



Ptarmigan, or Rock Grouse, Lath. Le Lagopede, Buf- 

 fon. pi. enl. \2i). female in winter: pi. 494, female acquiring 

 summer dress. 



Inhabit the Arctic regions of both continents. ;i> well as 

 the lofty mountains of the old. whence in winter they descend 

 to moderate elevations: common at Hudson's Bay, in Russia, 

 Switzerland, ice. 



13. Til ran alhvs. L. 



Feathers of the feel white; tail of eighteen feathers, the 

 lateral black; Mil Bhort, stout, depressed at the point, blunl ; 

 nails white, Ion.:, hardly curved. 



