8-14 BULLETIN 50, UNITED STATES NATIONAL MUSEUM, 



throat), narrowly and more or less distinctly barred with dusky; rest 

 of under parts dull ^\ liite, more or less tinged with ])ale olive-j^ellow 

 (especially anteriorly) more or less distinctly barred (narrowly) with 

 dusky or grayish, except, sometimes, on abdomen; axillars and under 

 wing-coverts yellowish white, usually narrowly and faintly barred with 

 grayish; inner webs of remiges grayish dusky, broadly edged with 

 yellowish white or pale primrose yellow; maxilla black, mandible 

 more grayish (bluish gray in life'O; iris dark yellow;'* legs and feet 

 grayish dusky (bluish gray in life?); length (skins), 105-131 (119); 

 wing, 63-69 (66.6); tail, 47-50 (48.9); exposed culmen, 10-11.5 (11); 

 tarsus, 15.5-17 (16.4); middle toe, 10-11.5 (10.8).^ 



Adult female. — Pileum and hindneck plain slate color or slate-gray, 

 the forehead tinged with olive or olive-greenish; back, scapulars, 

 rump, and upper tail-coverts uniform olive-green; tail grayish brown, 

 the rectrices edged with olive-greenish; lesser wing-coverts olive or 

 dusky; middle and greater coverts chestnut or cinnamon-rufous (the 

 latter sometimes blackish next to shaft on outer web); alula, primary 

 coverts, and remiges dusky or dull black, the remiges edged with rusty 

 brown or chestnut, these edgings broader on secondaries and changing 

 to yellowisli, yellowish white, or cinnamon-buff on innermost second- 

 aries (tertials) ; sides of head and neck light yellowish olive, obsoletely 

 if at all barred; under parts as in adult male but more strongly and 

 extensively yellow (sometimes wholly yellowish), more or less strongly 

 tinged with olive anteriorly; bill, etc., as in adult male; length (skins), 

 109-124 (117); wing, 61.5-67 (64.3); tail, 45-49.5 (46.5); exposed 

 culmen, 10.5-11.5 (11.1); tarsus, 16-17 (16.6); middle toe, 10.5-11.5 

 (10.8).'^ 



o''Amarillo oscuro;" S. Briceiio, on label, 

 b Nine specimens, 

 c Five specimens. 



Locality. 



MALES. 



One adult male from Costa Rica (Irazii) 



Four adult males from Colombia (Bogotfi) . . . 



Three adult males from Peru (luca Mine) 



One adult male from Venezuela (Escoridl) 



FEMALES. 



One adult female from Costa Rica (Irazu) 



Three adult females from Colombia (Bogota) 

 One adult female from Peru (Inea Mine) 



Middle 

 toe. 



11 



10.5 

 11 

 11 



10.5 



11 



10.5 



This species almost certainly requires subdivision, but with so few specimens I shall 

 not undertake to subdivide it. The male from Costa Rica differs from all the rest in 

 brighter olive-yellow of sides of head and neck and throat and much more distinct bar- 

 ring of under parts, the bars on chest decidedly black and those elsewhere both darker 



