DENDEOICA. 185 



Above olivaceous ashy (rump pure asli), with more distinct 

 black spots. Top and sides of head clear yellow, the 

 feathers of the crown tipped with black, or clouded with 

 dusky plumbeous. No dark markings or stripes on side 

 of head. No distinct black streaks beneath; black of 

 throat restricted to front of neck occidentalis. 



Prevailing color of upper part black, with olivaceous edgings 

 on the back ; rump and upper tail covert pure black. 

 Sides and crissum streaked with black. A simple black 

 stripe thriiugh the eye ; no patch beneath it . . . chrysopareia. 



Above olive-green. Upper tail coverts ashy, with central black 

 streaks. Feathers of head above black, with olive-green 

 edges. A broad olivaceous black stripe through eye from 

 lores, involving the ears, in which is a yellowish crescentic 

 patch below the eye. Black feathers of throat and chin 

 edged with yellow. Jugulum and sides of breast also 

 yellow. Sides streaked with black. No distinct black 

 streaks on crissum townsendii. 



For the opportunity of describing D. chrysopareia I am indebted 

 to Mr. Salvin, who kindly forwarded to me his type specimen for the 

 purpose. The species has not been noted except from Guatemala 

 (and Mexico?), but may not improbably be yet found in the Rocky 

 Mountains of the United States.' Mr. Salvin's specimen (No. jVA) 

 was killed at Tactic, Vera Paz, Nov. 4, 1859. 



Dendroica townsendii. 



Sylvia townsendii, " Ndttall," Townsend, J. A. N. Se. VII, n, 1837, 191. 

 — AuD. Orn. Biog. V, 1839, pi. Z^Z.—Syhicola t. Bon. ; Ann. B. A. II, 

 1841, pi. 92.— Dendroica t. Baibd, Birds N. Am. 1858, 269.— ScL. 

 P. Z. S. 1858, 298 (Oaxaca high lauds in winter) ; 1859, 374 (To- 

 tontepec; winter). — Sclatee & Salvik, Ibis, 1859,11 (Guatemala). 

 —Cooper & Suckley, P. R. R. XII, ii, 1859, 179 (Cal.,). 



Hab. Western province of U. S., and Mexico, into Guatemala. Migratory. 



I have never seen a specimen of this species in pure spring plu- 

 mage, and I am not sure that the throat ever becomes pure black as 

 in virens and its allies. Some specimens have the whole chin and 

 throat yellow — the feathers of the latter very indistinctly dusky in 

 the centre. 



' A specimen of this bird, or one very closely allied, is said to have been 

 recently collected near San Antonio, Texas, by Dr. A. T. Heermanu. 



