Page:Birds of North and Middle America partV Ridgway.djvu/257

Rh Range. — Southern Mexico to Cayenne, southeastern Brazil, Bohvia, and Ecuadór. (About twelve species. )

a. Pileum barred or transversely lunulated with black. (Dendrocolaptes sanctithomæ.)
 * b. Pileum distinctly more rufescent or tawny than color of back; back more broadly or more distinctly barred; bars on under parts broader. (Southeastern Mexico to western Panamá.)

Dendrocolaptes sancti-thomæ sancti-thomæ (p. 229).
 * bb. Pileum nearly (sometimes quite) concolor with back; back more narrowly or less distinctly barred; bars on under parts narrower. (Southwestern Costa Rica and adjacent part of western Panamá.)

Dendrocolaptes sancti-thomæ hesperius (p. 232). aa. Pileum streaked with buffy or whitish.
 * b. Pileum blackish, with narrow (and indistinct?) buffy streaks; chest with pale buffy or whitish predominating (the mesial streaks broader). (Guatemala.)

Dendrocolaptes puncticollis (p. 232 ).
 * bb. Pileum grayish brown, with broader and more distinct streaks; chest with brown predominating, the buffy mesial streaks narrower. (Dendrocolaptes validus.)
 * c. Chest more distinctly and regularly streaked; under parts less extensively barred. (Colombia, etc.)

Dendrocolaptes validus validus? (extralimital).
 * cc. Chest less distinctly or more irregularly streaked (the streaks broken along edges by black dots or bars) and under parts more extensively streaked. (Costa Rica and Panamá; Nicaragua?; northwestern Colombia?).

Dendrocolaptes validus costaricensis (p. 233).

DENDROCOLAPTES SANCTI-THOMÆ SANCTI-THOMÆ (Lafresnaye).

Adults (sexes alike). — Pileum and hindneck dull cinnamon-rufous or russet marked with crescentic bars or lunules of black; back, scapulars, and smaller lesser and middle) wing-coverts olive-brown (nearly raw-umber to mars brown), barred, more or less distinctly, with black; rump, upper tail-coverts, tail, and proximal secondaries deep cinnamon-rufous or chestnut (the tail usually darker, more chestnut, than other parts), the shafts of rectrices darker; primaries and distal secondaries deep cinnamon-rufous edged, more or less broadly, with grayish brown or oUve, the inner webs of longer primaries