BIRDS — SYLVICOLIDAE — DENDROICA PENNSYLVANICA. 



279 



DENDROICA TENNSYLVANICA, Baird. 



C'hcstuut>sided warbler. 



Molacilitt pmnfl/Jranico, Linkaecs, Syst. Nat. I, 176G, 333, No. 19— Gmeliv, Syst. Nut. I, 1788, 971, No. 19. 

 Sylria pfiinsy/raiiifo, Latham, Ind. Orn. II, 1790, 540.— Wilson, Am. Orn. I, 1808, 99 ; pi. xiv, f. 5. 

 Molacilla ielerucrpliala, Linnaeus, Syst. Nat. I, 17G6, 334, 25.— Gmemn, Syst. I, 1788, 980. 



*yrio ic/ero«f/ia/u, Latham, Ind. Orn. II, 1790, 538.— Vieiluot, Ois. Am. Sept. II, 1807,31; pi. xc — Bon. 

 Obs. Wils. 1826, No. 140.— AcD. Orn. Biog. I, 1832,300; pi. 59.— Nuttall, Man. I, 1832, 

 380. 

 ^ijhUota icUrocephala, "SwAmaoN," Jard. ed. Wilson, 1832.— Ricn. List. 1837.— 'Bonap. List. 1838.— Id. 

 Conspectus, 1850, 308.— Add. Syn. 1839, 54.— Id. Birds Am. II, 1841, 35; pi. 81. 

 Sp. Cii.—vVa/f.— Upper parts streaked with black and pale bluish gray, which becomes nearly white on the fore part of tho 

 back ; tho middle of the back glosted with greenish yellow. The crown is continuous yellow, bordered by a frontal and super- 

 ciliary band, and behind by a square spot of white. Loral region black, sending off a line over tho eye, and another below it. 

 Ear coverls and lower eyelid and entire under parts pure while, a purplish chestnut stripe starting on each side in a line with 

 tho black moustache and extending back to the thighs. Wing and tail feathers dark brown, edged with bluish gray, except 

 the secondaries ana tertials, which are bordered with light yellowish green. Tho shoulders with two greenish whito bands. 

 Three outer tail featliers with white patches near the end of the inner webs. 



Female like the male, except that the upper parts are yellowish green, streaked with black ; tho black moustache scarcely 

 appreciable. 



Length, 5 ; wing, 2.50 ; tail, 2.20. 



Ilab. — Eastern United States to the Missouri. 



The greenish white of the wing i.s rather in one hand in the male tlian in two, the greater 

 coverts heing edged as well as ti2)ped with tliis color. 



The male Qiossibly of the first year) in autumn is very different from either male or female 

 in spring. The entire upper parts are of a continuous light olive green ; the under parts 

 white ; tlie sides of the head, neck, and breast ash gray, shading insensibly into and tinging 

 the white of the chin and throat. No black streaks are visible above nor on the cheeks, and 

 the eye is surrounded by a continuous ring of white, not seen in spring. The wings and tail 

 are much as in the female. 



In one specimen from St. Louis (0977) the black completely encircles the eye, and the bill is 

 entirely bluish black, in.stead of being brown beneath. 



List of specimens. 



