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



153 



Depth of bill at base, .40 or more ; no black 011 lores ; shafts of secondaries, 

 black. Newfoundland. 



Allen's Ptarmigan. 



Lagopus lagopus alleni. 

 See No. 241. 



Depth of bill at base, less than .40. 

 Li 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 than .40; shafts of secondaries, not black. Confined 

 to island of Newfoundland. 



Welch's Ptarmigan. 



Lagopus welchi. 

 See No. 244. 



