Ti4 BisHop, New Birds from Alaska, Apat 
Canachites canadensis osgoodi, subsp. nov. ALASKA GROUSE. 
Type, No. 4310, Coll. of L. B. Bishop, 2 ad., Lake Marsh, Northwest 
Territory, July 5, 1899; (W. H. Osgood) L. B. Bishop. 
Subspecific characters. — Similar to Canachites canadensis but with the 
ochraceous buff bars replaced everywhere by cream-buff and grayish 
white. On the upper parts the gray tips are paler, the ochraceous buft 
replaced by cream-buff and whitish, and the pale bars of the cervix gray- 
ish white instead of buff; below the white tips are larger, the pale bars 
whitish and cream color instead of buff, becoming cream-buff only on 
the jugulum. 
Distribution. — Northwest Territory, Northern British Columbia and 
Alaska north of the coast mountains. 
Measurements of tyfe.— Length, 15.50; extent, 24.25; wing, 7.20; 
tail, 4.54; tarsus, 1.32 inches. Average length of 4 9, 15.38 inches. 
Average of 6 2 andi J in wing, 7.62; tail, 4.51; tarsus, 1.34 inches. 
Description.— Above irregularly barred with grayish white and black, 
the pale bars becoming cream-buff on crown and interscapulars and 
grayish buff on wing-coverts and concealed bars of rump and upper tail- 
coverts; scapulars and inner tertiaries black, irregularly barred on outer 
web and tipped with cream-buff and gray with central wedge of white. 
Quills dusky, mottled on outer web and obscurely tipped with whitish ; 
tail dusky, vermiculated, chiefly on outer web, with grayish buff and 
tipped with tawny ochraceous. Below barred with grayish white and 
black, the feathers especially on breast and abdomen broadly tipped with 
white; the pale bars becoming cream-color on throat and toward base 
of feathers on sides of breast, and distinctly cream-butt only on jugulum ; 
flanks vermiculated with black, grayish white and pale cream-buff with 
broad central wedge of white. Tarsal feathering pale mars brown 
obscurely spotted with darker. 
Remarks. —In worn breeding plumage adult females of osgoodi 
differ from canadensis from Maine as described above. After 
completing the summer moult and in early spring females from 
Alaska differ from females from Ontario and Quebec in the same 
manner but to a less degree, having the buff everywhere, espe- 
cially on the cervix and abdomen, paler and the white tips below 
broader. 
A summer male of osgoodi from Thirty Mile River differs from 
summer males of canadensis and labradorius only in having the tail 
tipped with paler rufous. 
Two adult females of /adradorius' from Mr. Bangs’s collection 
Mr. Bangs writes me that these are not the best examples of J/adradorius, 
but are the most characteristic at present available. 
