FAMILY TETRAONID.E. GROUSE, PARTRIDGES, QUAILS, ETC. 



153 



Depth of bill at base, .40 or more ; no black ou lores ; shafts of secondaries, 

 black. Newfoundland. 



Allen's Ptarmigan. 



Lagopus lag opus alien i. 

 See No. 241. 



Depth of bill at base, less thau .40. 

 In summer : back, gray, mixed 

 with black, or tawny buff, or 

 gray and white. In winter: 

 plumage, white ; lores, usually 

 (not always) black. 



Rock Ptarmigan. 



Lagopus rupestris, and races. 

 See No. 242. 



Similar to Lagopus rupestris, but in summer, back, more heavily barred. Confined 

 to Northern Labrador and Greenland. 



Reinhardt's Ptarmigan. 



Lagopus rupestris reinhardti. 

 See No. 243. 



Depth of bill at base, less thau .40 ; shafts of secondaries, not black. 

 to island of Newfoundland. 



Confined 



Welch's Ptarmigan. 



Lagopus welchi. 

 See No. 244. 



