374 REVIEW OF AMERICAN BIRDS. [PART I. 



B. Cap rufoun or ocbraceous, •well defined against color of 



back ; forehead luuch. brighter. 



Forehead and vertex much brighter ochraceous than 

 rest of head. "Wliole upper parts, except the oli- 

 vaceous rump, more or less rufous ; breast tinged 

 Tvith the same. Legs flesh color .... ochraceiceps. 



Forehead rusty brown. Upper parts dark olive green ; 

 tail alone tinged with rufous. Beneath light oliva- 

 ceous-green. Legs dusky ferruginifrons. 



Forehead ochrey yellow. Back and tail bright olive 

 green, without rufous. Beneath clear yellow. Legs 

 plumbeous aurantiifrons. 



C. Cap tinged with bistre or sepia brown, shading gradually 



off into the olive of back ; the rump only bright olive. 



Forehead paler only, not brighter. The only yellow of 



abdomen on crissum. 



Cap tinged with bistre brown, as is the back. Beneath. 

 soiled fulvous white ; throat grayer ; flanks olivace- 

 ous. Legs yellowish. First quill not half the 

 longest ......... acuticauda. 



Cap and back ochrey ash. Beneath soiled smoky fulvous 

 ash ; no olive on flanks. Legs pale. First quill 

 more than half longest ...... insularis. 



D. Cap and forehead clear olive green, uniform with the re- 



mainder of upper parts. 



Beneath bright yellow ; paler on throat. Legs yellow viridijlavus. 



E. Cap clear ash color, in abrupt contrast with the bright olive 



green of remaining upper parts. Beneath whitish. Sides 



of body and crissum olivaceous. 



Ash of head and nape sharply defined behind and on 

 side of neck ; unmixed with olive. Flanks strongly 



washed with olive green decurtatus. 



Ash of head and nape less extended, and indistinct 

 behind and on side of neck ; mixed or washed 

 with olive. Flanks only slightly washed with, 

 olive yellow. Upper parts more yellow. Size 

 smaller. ........ pusillus. 



None of the species of Ilylophilus mentioned in the foot-note, 

 all belonging to South America, have yet come under my observation.^ 



' Hylophilus semibrunneus, Lafk. Rev. Zool. 1845, 341 (Bogota). 



Olive ; head, neck, and upper part of back olive brown ; beneath pale olive 

 yellowish ; throat, bend of wing, and middle of abdomen whitish ; bill pale 

 brown; feet plumbeous. Length, 4.50. 



Similar to II. pcecilotis, but differs in having decidedly larger bill, and in 

 having the brown of head extending over the ears, the whole neck, and upper 

 part of back. 



