492 BtTLLETTN 50, UNITED STATES NATIONAL MUSEUM. 



relatively longer bill and t arsiis (exposed culmen nearly as long as mid- 

 dle toe with claw, tarsus one-fourth as long as wing) and very different 

 coloration (absence of A'ellow on crown or rump, tail concolor with 

 back, and wings with two fulvous bands). 



Bill shorter than head, broad and depressed basally, its width at 

 frontal anti?e ef{ual to about half the length of exposed culmen and 

 about twice its depth at same point, broadly wedge-sha]^ed in vertical 

 profile with lateral outlines nearly straight, but slightly convex just be- 

 yond middle portion ; exposed culmen nearly as long as middle toe with 

 claw, rather broadly ridged, nearly straight for most of its length, 

 rather abruptly decurved terminalh^, the tip of maxilla distinctly un- 

 cinate; gonys much longer than mandibular rami, decidedly convex; 

 maxillarj^ tt)mium nearly straight, distinctly notched subterminally. 

 Nostril exposed, rather small, nearly circular, in anterior end of nasal 

 fossjie, margined above by narrow membrane. Rictal l:)ristles well 

 developed, reaching rather more than halfway to tip of bill; the 

 feathers of chin and frontal antia^ with distinct though fine bristly 

 points. Wing moderate, rounded, with longest primaries exceeding 

 secondaries l)y about length of exposed culmen; seventh primar}' 

 longest, eighth and sixth, successively, slightly shorter, ninth ecpal to 

 fifth, the tenth (outermost) equal to first. Tail nearly as long as wing, 

 slightly rounded, the rectrices with rounded tip. Tarsus one-fourth 

 as long as wing, its scutellation typically exaspidean, with divisions of 

 acrotarsium indistinct; middle toe, without claw, more than half as 

 long as tarsus, its basal phalanx united to outer toe for entire length, 

 to inner toe for more than half its length; outer toe, without claw, 

 reaching to slightly beyond middle of subterminal phalanx of middle 

 toe, the inner slightly shorter; hallux about as long as inner toe or 

 slightly shorter, its claw shorter than the digit; all the claws rather 

 slightly curved, sharp, much compressed. 



Color'ation. — Above plain olive, the pileum slate color, the wings 

 dusky, with tips of nnddlo and greater coverts and broad edges to 

 inner secondaries fulvous; throat grayish white, chest and sides ful- 

 vous, abdomen pale yellow; no yellow on crown nor rump. 



Nidif cation. — (Unknown.) 



Range. — Nicaragua and Costa Rica. (IMonotypic.) 



APHANOTRICCUS CAPITALIS ( Salvin). 

 SALVINS FLYCATCHER. 



Adult male. — Pileum, hindneck, and sides of neck uniform dull slate 

 color; back, scapulars, lesser wing-coverts, and rump, uniform olive, 

 the upper tail-coverts similar but slightly more brownish; tail deep 

 grajdsh brown, with light olive-brown or brownish olive edgings; wings 

 (except lesser coverts) dull black or dusky, the middle and greater 



