478 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Adult male. — Head, neck, and chest dull black, passing into dusky- 

 sooty brown on forehead; rest of upper parts dull grayish olive, much 

 lighter on rump and upper tail-coverts; lower parts from breast back- 

 ward dull white, tinged with buflf posteriorly, especially on under tail- 

 coverts; breast, particularly on sides, indistinctly but rather broadly 

 streaked with dusky; bill black, brownish on gonj'^s; tarsi deep hora 

 brown; toes duskj-. 



ImrriMture male. — Above light grayish olive, the pileum rather 

 graj^er , broadly but rather indistinctly streaked with dusky, the feathers 

 of the back still more broadly but much less distinctly darker medially; 

 supraloral region, malar and suborbital regions, and entire under parts 

 dull grayish white, faintly tinged with yellowish buff, especially on 

 chest and breast, the former and sides of the latter broadly but very 

 indistinctly streaked with grayish dusky; bill duskj^ horn color, light 

 brown on edge of maxilla and terminal two-thirds of mandible; tarsi 

 and toes brownish black. 



Adult femMe. — Above light grajdsh olive, the pileum obsoletely 

 streaked with darker and the feathers of the back and scapulars darker 

 centrally, producing an obsolete spotting; rump and upper tail-coverts 

 quite uniform, the latter paler and grayer; wings and tail dusky 

 brownish gray, the feathers with light grayish olive margins, the mid- 

 dle wing-coverts broadly tipped with this color, forming an indistinct 

 band, the greater coverts more narrowly tipped with a paler and some- 

 what more buffy tint; lores, orbital region, cheeks, and under parts 

 dull grayish buffy whitish, tinged with dull buff on sides and flanks, 

 where obsoletely streaked with darker; ear-coverts very pale olive- 

 grayish, shading posteriorly into the darker color of the hindneck and 

 below into the dull whitish of the malar region; under wing-coverts 

 white, tinged along edge of the wing with pale yellowish buff; maxilla 

 cinnamon-brown, becoming dusky at tip and on terminal portion of 

 culmen; mandible buff -yellowish; "iris dark brown;" legs and feet 

 brownish black. 



Immature female. — Different from the adult only in the wing- 

 markings, both the middle and greater coverts having much nar- 

 rower and more sharply defined terminal margins of bufl'y whitish, the 

 secondaries similarly but less distinctly marked. 



J/ff('t.— Length (skins), about 134.62; wing, 70.36-76.20 (72.90); 

 tail, 41.91-46.99 (44.96); culmen, 14.99-15.49 (15.24); gonys, 7.62; 

 width of mandible at base, 8.64-9.40 (9.14); depth of bill at base, 

 10.92-11.94 (11.43); tarsus, 22.86-24.13 (23.37); middle toe, 15.24- 

 16.61 (15.75).' 



i^ema^e.— Length (skins), about 107.95-119.38(113.66); wing, 65.28- 

 70.36 (68.58); tail, 40.64-44.45 (43.18); culmen, 13.97-16.49 (14.73); 



^ Three specimens, one each from James, Charles, and Indefatigable islands; only 

 the first adult. 



