730 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



color, the greater coverts broadly edged with gra}^ (like color of back), 

 the remiges more narrowly edged with paler gray, the tertials very 

 broadl}' edged with white;" upper tail-coverts and tail black, the outer- 

 most rectrix with most of its outer web and nearl}^ terminal two- 

 thirds of inner web white, the next with white on outer web extending 

 about as far toward base as white on inner web of exterior rectrix, 

 that on inner web occupying less than terminal half, the third broadly 

 tipped with white, which follows edge of outer web for a greater or 

 less distance toward base (sometimes nearly to base, but usually not 

 farther than middle portion); sides of head (below the bla(*k pileum) 

 and under parts white, the chest faintly shaded with pale bluish gray, 

 passing into decided- light bluish gray on sides; bill black, the basal 

 portion of mandible paler and more grayish; iris brown; legs and feet 

 dusky. 



Adult male in autumn and winter {= P. restricta Brewster*). — 

 Similar to the spring and summer plumage, but black of pileum 

 restricted to the forehead and crown (sometimes to the anterior por- 

 tion of the latter), often intermixed with slate-gray feathers; lores 

 more or less intermixed with pale gra}^ or grajnsh white; upper por- 

 tion of auricular region gray, like hindneck, the lower portion less 

 purely white than in the summer plumage; eyelids white, forming a 

 more or less distinct though incomplete orbital ring; gray of back, 

 etc., rather duller. 



Adult female. — Above plain slate-gray (much less bluish than in 

 adult male), the pileum slightly darker than back; otherwise like the 

 adult male, but dusky color of remiges paler and browner. 



Young male in first autumn and winter. — Similar to the adult 

 female, but upper parts more bluish gray. 



Young., fir d plumage. — Similar to adult female, but gray of upper 

 parts replaced by pale grayish brown or brownish gray, and texture 

 of plumage different. 



Adult w?aZe.— Length (skins), 103-114 (108.4); wing, 46.5-50 (48); 

 tail, 47-53.5 (50.6); exposed culmen, 11-12 (11.3); tarsus, 17-19 (18.2); 

 middle toe, 8.5-9.5 (9.2).^^ 



Adult female.— l^ength (skins), 104-109 (107.5); wing, 44-48 (45.6); 



« These white edgings indistinct or obsolete in worn midsummer plumage. 



''All specimens examined corresponding in character to P. restricta were taken in 

 February and March, one taken March 19 having the black of the pileum extend- 

 ing as far backward as in P. nigriceps. All specimens corresponding to P. nigriceps 

 were taken in May, June, July, and August, that taken during the last-named 

 month having already assumed the white eyelids and many gray or whitish feathers 

 on the lores. Females of the two supposed forms are quite indistinguishable from 

 one another. 



c Eighteen specimens. 



