152 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
Southwestern Mexico, in States of Jalisco (San Sebastidn), Morelos 
(mountains) and Guerrero (Omilteme); Mexico (Valley of Mexico; 
Chimalpa; Ajusco) ? 
(?) Grallaria mexicana (not of Sclater, 1861?) SctarER, Proc. Zool. Soc. Lond., 
1864, 175 (Valley of Mexico); Cat. Birds Brit. Mus., xv, 1890, 313, part 
(western Mexico)—Satvin and Gopman, Biol. Centr.-Am., Aves, ii, 1892, 
241, part (Valley of Mexico, Chimalpa, and Ajusco, Mexico). 
Grallaria mexicana Savin and Gopman, Biol. Centr.-Am., Aves, ii, 1892, 241, 
part (Omilteme, Guerrero). 
Grallaria ochraceiventris NEuson, Proc. Biol. Soc. Wash., xii, Mar. 24, 1898, 62 
(San Sebastidn, Jalisco; coll. U. 8. Nat. Mus.). 
[Grallaria] ochraceiventris SHarPE, Hand-list, iii, 1901, 41. 
Genus HYLOPEZUS Ridgway. 
Hylopezus@ Ripaway, Proc. Biol. Soc. Wash., xxii, Apr. 17, 1909, 71. (Type, 
Grallaria perspicillata Lawrence.) 
Medium-sized terrestrial Formicariide (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 anti 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 membra- 
nous integument of the nasal fossx, 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 sec- 
ondaries; 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) 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, 
a”Ydy, a wood, forest; ze(éc, walking. 
b In H. dives even the eighth primary (third from outside) is much shorter than 
the secondaries. 
