ZOOLOGY. 
177 
Sub-Family SYLVICOLINAE. The Wood Warblers. 
GEOTHLYPIS TRICHAS, Cabanis. 
Maryland Yellow-tlixoat. 
Turdus trichas, Linn. Syst. Nat. I, 17C6, 293.— Gmelin, Syst. Nat. I, 1788. 
Sylvia trichas, Latham, Ind. Orn. 11, 1790. — Vieillot, Ois. Am. Sept. II, 1807, 28 ; pi. xxviii & xxix. — Aud. Orn. 
Biog. I, 1832, 120 : V, 1838, 463, pi. 23 & 240. 
Geothlypis trichas, Cabanis, Mus. Hein. 1850, 16. — Baird, Gen. Eep., Birds, p. 241. 
Sylvia marilandica, Wilson, Am. Orn. 1, 1808, 88 ; pi. Ti, f. 1. 
Trichas marilandica, Bon. List, 1838.— Ib. Consp, 1850, 310.— Aud. Syn. 1839, 65.— Ib. Orn. Biog. II, 1841, 78; pi. 103. 
Sylvia roscoe, Aud. Orn. Biog. 1, 1832, 124 ; pi. 24. (Young male.) 
Trichas roscoe, Nuttal, Man. I, 2d ed, 1840, ?457. 
Sp. Ch. — Upper parts olive green, tinged with brown towards the middle of the crown ; chin, throat, and breast as far as the 
middle of the body, with the under tail coverts bright yellow. Belly dull whitish bufif. Sides of body strongly tinged with light 
olive brown ; under coverts glossed with the same. A band of black on the forehead, (about .20 of an inch wide in the middle,) 
passing backwards so as to cover the cheek and ear coverts, and extending a little above the eye ; this band bordered behind 
by a suffusion of hoary ash, forming a distinct line above the eye, and widening behind the ear coverts into a larger patch, with 
a yellow tinge. In winter dress, and in the female, without the black mask, the forehead tinged with brown, the yellow of the 
throat less extended, the eyelids whitish, and an indistinct superciliary line yellowish. Length of male, 4. 80 to 5. 50 ; extent, 
6. 75 ; wing, 2. 40 ; tail, 2. 20. Bill black, iris brown, feet pale brown. 
Hab. — North America from Atlantic to Pacific. 
The Maryland yellow-throat is very common in the Territory during summer, preferring, as 
usual, the bushes along brooks and swamps. I observed its arrival about the first of April, and 
it remains until September. — C. 
I have obtained several specimens of this bird at Fort Steilacoom, in the neighborhood of 
which they are always summer residents, but not in such numbers as the next species. — S. 
GEOTHLYPIS MACGILLIVRAYI, Baird. 
Macgilllvray's Warbler. 
Sylvia macgillivrayi, Audubon, Orn. Bio. V, 1839, 75 ; pi. 399. (Sylvia Philadelphia on plate.) 
Trichas macgillivrayi, Aud. Syn. 1839, 64.— Ib. Birds Amer. II, 1841, 74 ; pi. 100. 
Sylvia ioZmoei, TowNSEND, J. A. N. Sc. VIII, 1839, 149, 159. (Read April, but the volume really not published 
till 1840.) 
Sylvia tolmiei, Townsend, Narrative, 1839,343. 
Trichas tolmiaei, Nuttall, Man. I, 2d ed., 1840,460. 
Geothlypis macgillivrayi, Baird, Gen. Eep. p. 244. 
Sp. Ch — Head and neck all round, throat and fore part of the breast, dark ash color ; a narrow frontlet, loral region and 
space round the eye (scarcely complete behind) black. The eyelids above and below the eye (not in a continuous ring) white. 
The feathers of the chin, throat, and fore breast really black, with ashy gray tips, more or less concealing the black. Rest 
of upper parts dark olive green, (sides under the wings paler ;) of lower, bright yellow. Female with the throat paler and 
without any black. Length of male, 5 to 5. 75 inches ; extent, 7. 25 to 8 ; wing, 2. 45 ; tail, 2. 45 ; iris and feet brown, bill 
black above, white below. 
Hab. — Pacific coast of North America, south to Gulf of California and across to Monterey, Mexico. In Rocky mountains 
to Fort Laramie. — (Dr. Cooper.) 
This western yellow-throat is very common about Puget Sound, and, unlike the last, frequents 
the underbrush in the dry woods, keeping commonly close to the ground, but occasionally 
singing from a low tree a song somewhat similar to that of the above species. Its nest I 
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