Wing pointed, second quill longest, first longer than third, tail emarginate, the three first primaries very slightly attenuated at the ends; upper parts, cheeks, and sides of the neck, dusky brown, tinged with greyish-olive, the head darker; quills and tail blackish-brown, the secondaries margined with brownish-white; downy feathers on the sides of the rump white; lower parts greyish-white, the sides dusky grey. Young similar to adult. _Male_, 7-1/2, 12-3/4. From Texas northward along the Atlantic. Never seen far in the interior. Columbia River. Migratory. Olive-sided Flycatcher or Pe-pe, Muscicapa Cooperi, Nutt. Man. v. i. p. 282. Tyrannus borealis, Northern Tyrant, Swains. & Rich. F. Bor. Amer. v. ii. p. 141. Olive-sided Flycatcher, Muscicapa Cooperi, Aud. Orn. Biog. v. ii. p. 422; v. v. p. 422. * Bill more slender. Tyrannula of authors. 59. 6. Muscicapa Saya, Bonap. Say's Flycatcher. Plate CCCLIX. Fig. 4. Male. Fig. 5. Female. Third quill longest, second and fourth scarcely shorter, first a little longer than sixth; tail very slightly emarginate; upper parts greyish-brown; upper tail-coverts and tail brownish-black; wings of a darker tint than the back, the feathers margined with brownish-white; a dusky spot before the eye; fore part and sides of neck light greyish-brown, shaded with pale brownish-red on the breast and abdomen; lower wing-coverts reddish-white. _Male_, 7, wing 4-2/12. Arkansas. Columbia River. Fur Countries. Never seen along the Atlantic. Abundant. Migratory. Say's Flycatcher, Muscicapa Saya, Bonap. Amer. Orn. v. i. p. 20. Muscicapa Saya, Bonap. Syn. p. 67. Tyrannula Saya, Swains. & Rich. F. Bor. Amer. v. ii. p. 142. Say's Flycatcher, Muscicapa Saya, Nutt. Man. v. i. p. 277. Say's Flycatcher, Muscicapa Saya, Aud. Orn. Biog. v. iv. p. 428. 60. 7. Muscicapa nigricans, Swains. Rocky Mountain Flycatcher. Plate CCCCXXXIV. Fig. 6. Male. Third quill longest, second and fourth little shorter, first and sixth about equal; tail very slightly emarginate; head, hind neck, fore part of back, fore neck, a portion of the head, and sides, dark sooty-brown; the rest of the upper parts greyish-brown; secondary coverts tipped, and secondaries margined with greyish-white, of which colour is the great part of the outer web of the lateral tail-feathers; middle of breast, abdomen, and lower tail-coverts white; lower wing-coverts greyish-brown, edged with white. _Male_, 7, wing 3-((7-1/2)/12). Mexico and California. Rare. Migratory. Tyrannula nigricans, Swains. Syn. of Mex. Birds, Phil. Mag. N. S. v. i. p. 367. Rocky Mountain Flycatcher, Muscicapa nigricans, Aud. Orn. Biog. v. v. p. 302. 61. 8. Muscicapa Phœbe, Lath. Short-legged Pewit Flycatcher. Plate CCCCXXXIV. Fig. 5. Male.