BIRDS—SYLVICOLIDAE—DENDROICA PENNSYLVANICA. 279 
DENDROICA PENNSYLVANICA, Baird. 
Chestnut-sided warbler, 
Motacilla pennsylvanica, Linnaxus, Syst. Nat. I, 1766, 333, No. 19.—Gmetin, Syst. Nat. I, 1788, 971, No. 19. 
Sylvia pennsylvanica, Latuam, Ind. Orn. II, 1790, 540.—Wizson, Am. Orn. I, 1808, 99; pl. xiv, f. 5. 
Motacilla icterocephala, Linnarvus, Syst. Nat. I, 1766, 334, 25.—Gmenin, Syst. I, 1788, 980. 
Sylvia icterocephala, Laruam, Ind. Orn. II, 1790, 538.—VieitLot, Ois. Am. Sept. II, 1807, 31; pl. xe —Bon. 
Obs. Wils. 1826, No. 140.—Aup. Orn. Biog. I, 1832, 306; pl. 59.—Nurratt, Man. I, 1832, 
380. 
Sylvicola icterocephala, ‘* Swainson,” Jarp. ed. Wilson, 1832.—Ricu. List. 1837.—Bonar. List. 1838.—Is. 
Conspectus, 1850, 308.—Avup. Syn. 1839, 54.—Is. Birds Am. II, 1841, 35; pl. 81. 
Sp. Cu.—Male.—Upper parts streaked with black and pale bluish gray, which becomes nearly white on the fore part of the 
back ; the middle of the back glossed 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 the eye, and another below it. 
Ear coverts and Jower cyelid and entire under parts pure white, a purplish chestnut stripe starting on each side ina line with - 
the black moustache and extending back to the thighs. Wing and tail feathers dark brown, edged with bluish gray, except 
the secondaries and tertials, which are bordered with light yellowish green. The shoulders with two greenish white bands. 
Three outer tail feathers 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 ; the black moustache scarcely 
appreciable. 
Length, 5 ; wing, 2.50; tail, 2.20. 
Hab.—Eastern United States to the Missouri. 
The greenish white of the wing is rather in one band in the male than in two, the greater 
coverts being edged as well as tipped with this color. 
The male (possibly 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; the 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 (6977) the black completely encircles the eye, and the bill is 
entirely bluish black, instead of being brown beneath. 
List of specimens. 
Catal. |Sex. Locality. When collected./ Whence obtained. | Orig. | Collected by— | Length. | Stretch | Wing. 
No. No. of wings. 
1694 | oO | Carlisle, Pa.......-- Sept 4, 1844r6.cR Baird o225-|=- a-|esacccseesecsceic 5. 25 7.41 215 
ZOO Gy|saeo os dozstiecce-3-2 May 4, 1844 |...... doesn sis.|s225ce|. sass ae ee 5. 16 8. 00 2.08 
2664mleou|pess es don eue ss See May 18, 1844 |...--- doi2= 254/82 223). Sees | 5.08 | 7.83 | 2.08 
SAB aG|ase=sedOsssensces5—- May 6, 1844 |...... doLetuse== eascer! bonotoedcacHsiad 5. 00 TAT 2. 50 
768 On| eens do aunt at oe May 16, 1844 |.----- (lea Saets ele ers (a pe RE a eee 5.00 | 7.50 | 2.50 
(361g a= OlevelandssOhioss=.s|=seeae=e-=< 252 JedbeMntlandesc|testaae (easel seem a eae es | eee aca|inaee ne) ae ome 
WiesteNoxrthneld sile-| Mayo dip, 1855) |cR. Kennicotts oc le oe oto oo cee amen oa enc an|seanee 
South Illinois -...... Mayes eaece|s=ssne doss-.cse- (eiacs sobaaseestsss te eeesesae [ee eee 
6976 | ¢o | St. Louis, Mo- ...... May 12, 1857 | Lieut. Bryan.-.-| GES) WeS:, Wood -225|22222--|---2 2255 |-seeee 
GOS | pees Bees Oseene aaa Mays 91857" |=2--=- dose San ane |sne cae | essae dosa-2ss2: |--------|----2-0-]--- 02 
OAL eels Rs fo Pe sepia a oe May 125 857 \.2-.-. ee BSe Heat See does oleilk wastes (Saeco nee Sees 
4670 |---| Mouth of Platte river.) April 26-....- | Tnentawarrensos|scso—< Dr. Hayden----- 5. 00 dest} 2.50 
