56 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Adult male. — Pileum and hindneck plain slate color, becoming 

 paler (slate-gray) on supra-auricular region; back, scapulars, rump, 

 and upper tail-coverts plain olivaceous-slate color (more decidedly 

 olivaceous posteriorly) contrasting more or less strongly with slate 

 color of hindneck and pileum; tail darker slaty olive or olivaceous- 

 slate, the outermost rectrices usually narrowly tipped with whitish; 

 auricular region slate color (usually somewhat darker than pileum), 

 iome times with very narrow shaft-streaks of whitish; lores and sub- 

 •arbital region slate-grayish indistinctly mottled or flecked with paler, 

 the latter and posterior portion of the former sometimes uniform 

 dark slate color; malar region pale gray or grayish white, indistinctly 

 barred or transversely flecked with darker; outer web of exterior row 

 of scapulars broadly edged with white, the white usually margined 

 mternally by a narrow line of dusky; lesser wing-coverts black, at 

 least some of the feathers tipped, more or less distinctly, with wliite, 

 the inner-anterior portion of the area occupied by a white patch; 

 middle coverts black distinctly tipped with white; greater coverts 

 slate color or slate-gray narrowly tipped with white; remiges similar 

 in color to back, etc., the terminal portion of longer primaries more 

 brownish; chin and throat wliite or grayish white; chest pale gray 

 medially, darker (slate-gray) laterally, passing into light ohve on 

 flanks; breast (medially) white or yellowish white, passing into pale 

 yellow (primrose to nearly straw yellow) on abdomen and under 

 tail-coverts; under wing-coverts mostly pale yellow, the inner webs 

 of remiges broadly edged with the same; maxilla dusky, paler on 

 tomium; mandible paler (plumbeous in life); iris brown; legs and feet 

 dusky (plumbeous in hfe); length (skins), 101-113 (108.5); wing, 

 57-63 (59.4); tail, 37.5-41.5 (39.1); culmen, 14-15.5 (14.6); tarsus, 

 18-20 (19.2); middle toe, 11-12 (11.4).« 



Immature male. — Similar to the adult male but remiges distinctly 

 more brownish (nearly broccoli brown to light olive-brown), and 

 breast yellow l-li, like abdomen. 



Adult female. — Pileum chestnut-brown or russet, the feathers with 

 indistinct shaft-streaks of paler; hindneck similar but less rufescent 

 brown; back, scapulars, and rump plain ohve (varying from grayish 

 to brownish olive); upper tail-coverts and tail sepia brown; general 

 color of wings olive, the middle and greater coverts narrowly and 

 rather inchstinctly tipped with bufl^y or pale bufi^y brownish; a 

 narrow orbital ring of whitish; auricular region dusky olive or slaty 

 olive, with narrow shaft-streaks of whitish or pale buffy; malar 

 region, chin, and throat white, usually more or less tinged with pale 

 yellowish olive or dull yellowish; rest of under parts pale yellowish, 

 passing into light olive or buffy olive on sides and flanks, the under 

 tail-coverts buffy; bill, etc., as in adult male; length (skins), 96-112 



"■ Fifteen specimenfl. 



