Bristles longer than in the last, second quill longest; tail very long, nearly even; upper parts light greyish-blue; quills dusky brown, their outer webs greyish-blue, the two outer margined with white; middle tail-feathers and edges of the rest like the back; lower parts and a band on the forehead ochre-yellow, with a few faint dusky spots on the lower part of the fore neck. This species differs from the last chiefly in being of a more elongated form, in having the bristles much longer, the upper parts of a much lighter tint; in wanting the black band down the side of the neck, and the yellow band over the eye, the bill is straighter and more pointed, and the outer primaries are edged with white. _Male_, 5-1/4. Louisiana. Only one specimen ever found. Bonaparte's Flycatcher, Muscicapa Bonapartii, Aud. Orn. Biog. v. i. p. 27. 74. 4. Myiodioctes formosus, Wils. Kentucky Flycatching Warbler.--Kentucky Warbler. Plate XXXVIII. Male and Female. Third quill longest, second scarcely shorter, first longer than fourth, the outer three being nearly equal. Tail slightly emarginate and slightly rounded. Male with the upper part of the head and a band from the base of the upper mandible under the eye and down the side of the neck black; a streak from the nostril over the eye, and all the lower parts bright yellow; the upper parts yellowish-olive; wings brown, the feathers margined with yellowish-olive; tail light greenish-brown. Female similar, without the black band on the cheek and neck, and the black of the head less extended. _Male_, 5-1/2, 8. Valley of the Mississippi, and Kentucky. Migratory. Kentucky Warbler, Sylvia formosa, Wils. Amer. Orn. v. iii. p. 85. Sylvia formosa, Bonap. Syn. p. 34. Kentucky Warbler, Sylvia formosa, Aud. Orn. Biog. v. i. p. 196. 75. 5. Myiodioctes Wilsonii, Bonap. Wilson's Flycatching Warbler. Plate CXXIV. Male and Female. Wings short, the second and third quills longest and about equal, the first much shorter than the fourth and a little longer than the fifth; tail even. Back, rump, and upper tail-coverts yellowish-green; crown glossy bluish-black, bordered on the forehead and over the eyes with a broad band of bright yellow, of which colour are all the lower parts; wings and tail dusky brown, the feathers margined with yellowish-green. Female similar to the male, but with the black of the crown of much less extent. Young similar to the female, without black on the head. _Male_, 4-1/2, 6-3/4. From Texas northward, Columbia River, and intervening regions. Not in the Fur Countries. Rather rare. Migratory. Green Black-capt Flycatcher, Muscicapa pusilla, Wils. Amer. Orn. v. iii. p. 103. Sylvia Wilsonii, Bonap. Syn. p. 86. Green Black-capt Warbler, Nutt. Man. v. i. p. 149. Green Black-capped Flycatcher, Muscicapa Wilsonii, Aud. Orn. Biog. v. ii. p. 148. GENUS II. SYLVICOLA, Swainson. WOOD-WARBLER.