108 SYLVICOLIDZ, WARBLERS.—GEN. 39. 
has white eyelids. Rocky Mountains to the Pacific, U. S., and southward. 
One of the most abundant warblers in the mountains of Colorado, and 
common elsewhere in the West. Tvrichas tolmiet Nutt., 2d ed. i, 460; 
Aup:, ii, 74, pl. 1005 Bo:, 248; Coor:, 96: =... MACGmEyRANaE 
Subfamily ICTERIINA. Chats. 
A small group, recently framed to accommodate the following genus and its two 
tropical allies; it is perhaps questionable whether they are most naturally classed 
with the Warblers. Icteria shows the following points :— Larger than any other 
Sylvicolide ; bill short, stout, compressed, culmen and commissure both curved, 
tip unnotched, rictus unbristled ; wings much rounded, shorter or at most not longer 
than the tail. Sexes alike. Probably contains but one species. 
39. Genus ICTERIA Vieillot. 
Yellow-breasted Chat. Bright olive green, below golden yellow, belly 
abruptly white; lore black, isolating the white under eyelid from a white 
superciliary line above and a short white maxillary line below; wings and 
tail unmarked, glossed with olive; bill and 
feet blue-black ; 7-73; wing about 3 ; tail about 
34. Eastern United States, north to Massa- 
chusetts, abundant; an exclusive inhabitant of 
low tangled undergrowth, and oftener heard 
than seen, except during the mating season, 
; when it performs the extravagant aerial evolu- 
Fra. 48. Yellow-breasted Chat. tions for which, as well as for the variety and 
volubility of its song, it is noted. Nest in a crotch of a bush near the 
ground: eggs 4-5, white, speckled with reddish brown. Pipra polyglotta 
Wizs., i, 90 pl. 6, f. 2; Icteria viridis Nutt.,i, 299: Aup. Orn. Biog. 
li, 223, v, 433, pl. 137; Bp., 248; Icteria virens Bp., Rev. 228. VIRENS. 
Var. toncicaupa. Long-tailed Chat. Very similar; the olive duller and grayer, 
sometimes quite ashy on the head: tail usually but not always longer, averaging 
perhaps 31. Replaces virens from the Plains to the Pacific, U. S., and southward. 
Bp., 249 ; Cooprr, 98. 
Subfamily SETOPHAGINA. Flycatching Warblers. 
These have the bill depressed, considerably broader than high at base, notched 
and usually hooked at tip, and furnished with long stiff bristles that reach halfway 
or more from the nostrils to the end of the bill. ‘In other respects they are not 
distinguished from the rest of the family. While many or most other Sylvicolidee 
are expert in taking insects on the wing, these capture their prey in the air with 
special address, representing, in this respect, the true clamatorial flycatchers, with 
which some species of Setophagine used to be classed, in the extensive old genus 
“Muscicapa.” As I have said, the Sylwicoline are peculiarly North American ; 
while the Setophagine are most developed in Central and South America, where 
they are represented by three or four genera, and upwards of forty species. It is 
hardly necessary to add that, however closely some of them may resemble the 
