Note 75 — Family TYRANNIDÆ.—Tyrant Flycatchers.
Reading edition
Myiarchus tristis, var. lawrencei (Giraud), Baird. Tyrannula lawrencei, Giraud, 16 sp. Tex. B. pl. ii. Myiarchus l. Baird, Birds N. Am. 1858, 181, pl. xlvii, f. 3.—Coues, P. A. N. S. July, 1872, 74.
Obs.—The most typical specimens are from Mazatlan and northward, across the northern portion of Mexico. On the eastern coast, specimens from Mirador and Orizaba already strongly incline toward var. nigricapillus.