138 FIELD MUSEUM OF NATURAL HISTORY ZOOLOGY, VOL. IX. 



Canada Grouse (Male). 



Tarsus, entirely feathered; axillary plumes, smoky gray, with 

 white shafts, and tipped with white; the male has the breast black; 

 the female has the breast tawny brown, black, and white. 



Canachites canadensis. 

 Canada Grouse. Spruce Partridge. 

 See No. 141. 



SECTION 2. The following species have the greater portion of the 



primaries white : 



Willow Ptarmigan. 



