Page:Birds of North and Middle America partV Ridgway.djvu/60

32 
 * (?) D[iallactes] granadensis, Journ. für Orn., May, 1872, 234 (Bogotá, Colombia; coll. Berlin Mus.?).
 * (?) Thamnophilus transandeanus granadensis and, Bull. Soc. Philom. Paris, ser. 9, viii, 1906, 25 (Bogotá and Antioquía, Colombia; Mérida, Venezuela; crit.).

 Genus HYPOLOPHUS Cabanis and Heine.

Medium-sized Formicariidæ (length about 150 mm.) with strong, compressed, and conspicuously-hooked bill, crested pileum, tail four- fifths as long as wing, and exposed culmen longer than middle toe with claw; adult males with head, neck, chest, and median portion of breast and abdomen uniform black, sides and flanks white or light gray, wings and tail black varied with white; adult females brownish above (the wings varied with buff or whitish, pileum blackish or rufescent), the under parts plain buffy.

Bill nearly as long as head (exposed culmen longer than middle toe with claw), stout, slightly to much compressed, the maxilla conspicuously hooked and notched; width at frontal antiæ decidedly less than depth at same point (H. melanonotus) or slightly greater than depth (H. canadensis), equal to less than half the distance from nostril to tip of maxilla (H. melanonotus) or more than half (H. canadensis); culmen moderately (H. canadensis) to rather sharply ridged (H. melanonotus), nearly straight or very slightly convex for most of its length, strongly and rather abruptly decurved terminally, the tip of maxilla conspicuously uncinate; maxillary tomium nearly straight, distinctly notched and slightly toothed subterminally; mandible recurved and acute at tip, the tomium distinctly notched and toothed subterminally; gonys moderately convex, ascending terminally rather prominent basally. Nostril exposed, roundish or broadly oval, with an interior tubercle partly visible in upper posterior portion. Rictal bristles indistinct or obsolete, but loral feathers sometimes with shafts slightly elongated and thickened; feathers of chin, malar antiæ, and frontal antiæ with more or less distinct bristly tips. Wing moderate in length, rather pointed (primaries decidedly longer than secondaries); sixth and seventh primaries longest, tenth (outermost) more than three-fifths as long as the longest, ninth about equal to secondaries. Tail about four-fifths as long as wing, slightly (H. canadensis) to much (H. melanonotus) rounded, the rectrices (12) moderately broad, with rounded tip. Tarsus decidedly longer than exposed culmen, about one-third as long as wing, distinctly scutellate, the plantar scutella in two longitudinal series; middle toe, with claw, 