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



153 



Depth of bill at base, .40 or more ; 110 black 011 lores ; shafts of secondaries, 

 black. Newfoundland. 



Allen's Ptarmigan. 



Lac/opus lagopus 

 See No. 241. 



Depth of bill ;it base, less than .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. 



Lag opus rupestris, and races. 

 See No. 242. 



Similar to Lay opus ritpestris, but iu summer, back, more heavily bin-red. Confined 

 to Northern Labrador and Greenland. 



Reinhardt's Ptarmigan. 



Lac/opus nqiestris reinhardtf. 

 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. 



