Southwestern Mexico, in States of Jalisco (San Sebastián), Morelos (mountains) and Guerrero (Omilteme) ; Mexico (Valley of Mexico; Chimalpa; Ajusco)?
- (?) Grallaria mexicana (not of Sclater, 1861?) Sclater, Proc. Zool. Soc. Lond., 1864, 175 (Valley of Mexico); 5at. Birds Brit. Mus., xv, 1890, 313, part (western Mexico). — Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1892, 241, part (Valley of Mexico, Chimalpa, and Ajusco, Mexico).
- Grallaria mexicana Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1892, 241, part (Omilteme, Guerrero).
- Grallaria ochraceiventris Nelson, Proc. Biol. Soc. Wash., xii. Mar. 24, 1898, 62 (San Sebastián, Jalisco; coll. U. S. Nat. Mus.).
- [Grallaria] ochraceiventris Sharpe, Hand-list, iii, 1901, 41.
Genus HYLOPEZUS Ridgway.
- Hylopezus[1] Ridgway, Proc. Biol. Soc. Wash., xxii, Apr. 17, 1909, 71. (Type, Grallaria perspicillata Lawrence.)
Medium-sized terrestrial Formicariidæ (length about 120-125 mm.) with very long, slender, booted (nonscutellate) tarsi (more than two-fifths as long as wing), very short tail (one-third to about two-fifths as long as wing), slender bill, no rictal bristles, and under parts partly white, with chest more or less streaked with black. Bill shorter than head, slender, rather broad and depressed basally, its width at loral antiæ greater than its depth at same point and equal to half or more the distance from nostril to tip of maxilla; culmen distinctly but not sharply ridged, straight basally, then gradually decurved, the tip of maxilla slightly uncinate; tomia nearly straight, that of maxilla distinctly notched subterminally, the mandibular notch very indistinct or obsolete; gonys convex and prominent basally, nearly straight and ascending terminally. Nostril exposed, horizontally oval, posteriorly nearly in contact with loral feathering, margined above by a narrow extension of the membranous integument of the nasal fossæ, an internal tubercle or septum showing within the upper posterior portion. Rictal bristles obsolete, but feathers of malar and loral regions with bristly shafts. Wing moderate, with longest primaries projecting decidedly beyond secondaries; sixth and seventh, fifth, sixth, and seventh, or fifth and sixth, primaries longest, the tenth (outermost) a little less than three-fifths to slightly more than two-thirds as long as the longest, the ninth much shorter than secondaries (H. dives)[2] or longer than secondaries (other species). Tail one-third (H. perspicillatus) to about two-fifths (H. macularius) as long as wing, very slightly rounded, the rectrices (12) rather broad, rounded terminally. Tarsus
slightly more than two-fifths to nearly half as long as wing, slender,
