670 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



first, tail sliorter than distance from bend of wing to end of distal 

 secondaries (about four-fifths as long as wing) , latero-frontal feathers 

 forming a compact tuft nearly if not quite concealing nostrils, under 

 parts (except throat) bright yellow, and pileum and broad stripe on 

 sides of head black, separated by a conspicuous white superciliary^ 

 stripe, the crown with a concealed patch of yellow. 



Bill about as long as head, narrow^ and tapering in both lateral and 

 vertical profiles, its width at posterior end of nostrils equal to less 

 than half the distance from nostril to tip of maxilla and less than one 

 and a half times its depth at same point, narrowly wedge-shaped in 

 vertical profile, w^ith lateral outlines straight and converging gradu- 

 ally to the nonconstricted tip; expose:! culmen slightly shorter than 

 tarsus, distinctly ridged, straight to near tip, where rather abruptly 

 decurved, the tip of maxilla distinctly uncinate; gonys much less 

 than twice as long as mandibular rami, slightly convex, ascending 

 terminally, its base rather prominent; maxillar}^ tomium nearly 

 straight, distinctly notched subterminally. Nostril concealed be- 

 neath dense antrorse feathering of latero-frontal antise, small, longi- 

 tudinally oval, margined above by very narrow^ (scarcely obvious) 

 membrane. Rictal bristles moderately developed; feathers of chin 

 with recurved, those of latero-frontal antise with arched, bristly 

 points, the malar antise with a few strong antrorse bristles. Wing 

 moderate, rounded, the longest primaries exceeding distal secondaries 

 by less than length of tarsus; seventh and eighth, or sixth, seventh, 

 and eighth primaries longest, ninth shorter than sixth (sometimes 

 shorter than fifth), the tenth (outermost) not longer than first (some- 

 times shorter than secondaries). Tail about four-fifths as long as 

 wing or slightly less (not longer than distance from bend of wing to 

 end of distal secondaries), slightly to distinctly rounded, the rectrices 

 of uniform \vddth, with rounded tip. Tarsus between one-fourth 

 and one-fifth as long as wing, rather stout, its scutellation ultra- 

 exaspidean, the acrotarsial scutella distinct and all extending quite 

 across outer side of tarsus; middle toe, with claw, slightly shorter to 

 slightly longer than tarsus, its basal phalanx united to outer toe for 

 more, to the inner toe for less, than its basal half; outer toe, without 

 claw, reaching to or beyond middle of subterminal phalanx of middle 

 toe, the inner toe distinctly shorter; hallux shorter than inner toe, 

 its claw shorter than the digit; all the claws rather long, moderately 

 curved, sharp. 



Coloration. — Pileum black with a central concealed patch of 3'ellow; 

 rest of upper parts plain brown or olive, the rectrices and remiges 

 sometimies with rufous edgings; a broad superciliary stripe of white, 

 and below this a much broader band of black across side of head; 

 under parts bright yellow, the throat wdiite. 



