374 REVIEW OF AMERICAN BIRDS. 
B. Cap rufous or calbrap bones well defined against color of 
back; forehead much brighter. 
Forehead and vertex much -brighter ochraceous than 
rest of head. Whole upper parts, except the oli- 
vaceous rump, more or less rufous; breast tinged 
with the same. Legs flesh color . : ; : 
Forehead rusty brown. (Upper parts dark olive green ; 
tail alone tinged with rufous. Beneath light oliva- 
ceous-green. Legs dusky . : 4 : ° 
Forehead ochrey yellow. Back and tail bright olive 
green, without rufous. Beneath clear yellow. Legs 
plumbeous . : “§ Ne od . : 5 
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 . . . ° - : . 5 
Capand back ochrey ash. Beneath soiled smoky fulvous 
ash; no olive on flanks. Legs pale. First quill 
more than half longest . : 5 : ‘ : 
D. Cap and forehead clear olive green, uniform with the re- 
mainder of upper parts. 
Beneath bright yellow; paler on throat. Legs yellow 
EK. 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 ‘ ‘ . " ° 
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 5 6 4 5 . - . : 
[PART I. 
ochraceiceps. 
Serruginifrons. 
aurantiifrons. 
acuticauda. 
insularis. 
viridiflavus. 
decurtatus. 
pusillus. 
None of the species of Hylophilus mentioned in the foot-note, 
all belonging to South America, have yet come under my observation.* 
! Hylophilus semibrunneus, Larr. 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 H. pecilotis, 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. 
