HYLOPHILUS. 373 
feathers frequently considerably pointed. Primaries but little longer than 
Secondaries; the Ist 
about half the 2d, 
which generally equals 
the secondaries ; the 4th 
and 5th longest. Bill 
more conical than in 
Vireo ; the culmen curv- 
ing very slightly, some- 
times nearly straight to 
the but little decurved 
tip, the notch of which 
is long and shallow. 
Bristles of mouth less 
developed. Legs length- 
ened ; claws very sharp 
and larger than in 
Vireo ; hind toe longer ; 
both the lateral claws reaching beyond base of middle claw ; the outer beyond 
the middle of the claw. Adhesion of toes as in Vireo. 
Hylophilus viridifiavus, LAWR. (Panama.) 
This genus is easily distinguished from the Vireos by the conical, 
more acute bill, but slightly decurved at tip, more arched com- 
missure, longer hind toe, much larger claws, and a more rounded 
wing than usual in Vireo. In the character of the feet it comes 
quite near Laletes. 
The species of Hylophilus which I have had the opportunity of 
examining agree very well in general characters, the principal varia- 
tion consisting in trifling differences in the proportions of the quills 
and length and graduation of tail. The first quill is usually less 
than half the longest: in inswlaris it is more than half. The tail 
in the type is longer than the wing; in others it is about equal; in 
a few species it is shorter. 
The following synopsis expresses the characters of the species 
known to me :— 
Common CHARACTERS.—General color of upper. parts olive green, the head, or 
at least the forehead, usually differing in having an ochrey or rufous wash, 
sometimes seen on the tail or back, sometimes wanting ; the forehead gener- 
ally more yellowish. No bands on wings or tail. Under parts whitish, 
yellowish, or olivaceous. Bill generally pale. Legs flesh color or plumbeouss 
A. Head and nape above uniform cinnamon brown. Fore- 
head not different. 
Rufous of head confined to upper surface.. Under parts 
fulvous yellowish. Legs dusky . . - - pecilotis. 
