11. Empidonax acadicus. ♂ Pa., 1825.

12. Empidonax flaviventris. ♂ Pa., 2330.

13. Mitrephorus palescens. ♂ Arizona, 40601.

Contopus borealis, Baird.

OLIVE-SIDED FLYCATCHER.

Tyrannus borealis, Sw. & Rich. F. Bor.-Am. II, 1831, 141, plate. Myiobius borealis, Gray, Genera, I, 248. Muscicapa cooperi, Nuttall, Man. I, 1832, 282.—Aud. Orn. Biog. II, 1834, 422; V, 1839, 422, pl. clxxiv.—Ib. Synopsis, 1839, 41.—Ib. Birds Am. I, 1840, 212, pl. lviii. Tyrannus cooperi, Bonap. List, 1838.—Nuttall, Man. I, (2d ed.,) 1840, 298. Contopus cooperi, Cabanis, Journal für Ornithol. III, Nov. 1855, 479. Muscicapa inornata, Nuttall, Man. I, 1832, 282. Contopus borealis, Baird, Birds N. Am. 1858, 188.—Cooper & Suckley, 169.—Sclater, Catal. 1862, 230.—Samuels, 135.—Cooper, Orn. Cal. 1, 1870, 323. Contopus mesoleucus, Sclater, P. Z. S. 1859, 43.—Ib. Ibis, 1859, 122, 151. Tyrannus nigricans, Max. Cab. J. VI, 1858, 184.