98 SYLVICOLIDH, WARBLERS.—GEN. 35. 
out, but are doubtless parallel with those of virens. AvD., ii, 60, pl. 93; 
Bis g2085 <<. Bes sO aelen Sree aehhe Pera aal he keer POCORDEN TATE: 
Townsend’s W laste: Somewhat similar to virens; upper parts olive- 
green, much black-streaked, crown mostly black with olive edgings of the 
feathers, chin and throat not perfectly black? Perfect plumage probably 
not known, and changes not well understood. Rocky Mountains to the 
Pacific ; said to have once occurred near Philadelphia. Nurr., 2d ed., i, 
446; Aup., 59, 92; Bp., 269, and Rev., 185; Coor., 91. . TOWNSENDII. 
Golden -cheeked Warbler. Prevailing color of the upper parts black, 
pure on the rump, elsewhere mixed with olive-green; sides of the head 
yellow, with narrow black stripe through the eye; below, with the wings 
and tail, as in virens; size of this species. Guatemala (Salvin) to Texas 
(San Antonio, Heermann). A species I have never seen; the description is 
abridged from Barrp, Rey., 183, 267, who took it from the type of the 
species. Sci. and Saty., Proc. Zool. Soc. London, 1860, 298, and Ibis, 
1860, 273. *,* This and the two preceding species require further investi- 
gation to place their relationship to each other and to virens upon firm 
foun: : slp clus: pat dea ce ei) to a CHR SORARITAG 
Black- Te ean Wacker. 6, in spring: back bluish-ash, with 
black streaks; head and neck all round pure black, with a white stripe over 
and behind eye, another, broader and longer, from the corner of the bill 
on each side of the chin and throat, and a little yellow spot just before and 
above the eye (no other yellow anywhere) ; below 
_ from the throat white, the sides with numerous black 
streaks; wings and tail blackish, former with two 
white bars a much whitish edging, latter with outer 
Fic. 40. Black-throated Gray the head and throat denuded with ae ‘ cond ais black 
beens a streaks of the back obsolete: the curious yellow loral 
spot seems to be persistent and diagnostic of the species. Size of virens, 
and much the same pattern of coloration, bluish-ash replacing the olive ; 
stands between virens and cerulescens; the western analogue of the latter. 
Rocky Mountains to the Pacific. Nurr., i, 2d ed. 471; Aup., ii, 62, pl. 
94% Bp. One OOOP- Ors tion ceiit- all teatime pert . » NIGRESCENS. 
Black-throated Blue Warbler. @ in spring: es uniform slaty-blue, 
the perfect continuity of which is only interrupted, in very high plumages, 
by a few black dorsal streaks ; below, pure white ; the sides of the head to 
above the eyes, the chin, throat, and whole sides of the body continuously 
jet-black ; wing-bars wanting (the coverts being black, edged with blue), 
but a large white spot at base of primaries; quill feathers blackish, out- 
wardly edged with bluish, the inner ones mostly white on their inner webs ; 
tail with the ordinary white blotches, the central feathers edged with 
bluish ; bill black; feet dark. Young 2, similar, but the blue glossed with 
olivaceous, and the black interrupted and restricted. 9 entirely different : 
