Page:Birds of North and Middle America partV Ridgway.djvu/223

Rh Adult female. — Length (skins), 126-136 (130); wing, 48.5-51 (49.9); tail, 60-67.5 (62.9); culmen, 11-12.5 (11.7); tarsus, 17.5-19 (18.5); middle toe, 13.

Southwestern Costa Rica (Buenos Aires; Boruca, Paso Reál, and Barranca, Boruca; Térraba); western Panamá (Santa Fé de Verágua)?


 * Synallaxis albescens (not of Temminck), Proc. Zool. Soc. Lond., 1867, 143 (Santa Fé de Verágua, Panamá; crit.). — , Proc. Zool. Soc. Lond., 1874, 9, part (Verágua; monogr.); Cat. Birds Brit. Mus., xv, 1890, 43, part (Santa Fé de Verágua). — and , Biol. Centr.-Am., Aves, ii, 1891, 147, part (Santa Fé de Verágua). — , Expl. Zool. Merid. Costa Rica, 1893, 38 (Térraba and Buenos Aires, s. w. Costa Rica).
 * [Synallaxis] albescens and, Nom. Av. Neotr., 1873, 63, part. — , Hand-list, iii, 1901, 54, part (Panamá).
 * Synallaxis albescens latitabunda, Auk, xxiv, July, 1907, 298 (Boruca, s. w. Costa Rica; coll. E. A. and O. Bangs). — , Ann. Carnegie Mus., vi, 1910, 634 (s. w. Costa Rica; habits).

SYNALLAXIS ALBESCENS HYPOLEUCA Ridgway.

Similar to S. a. laiitabunda but under parts (including chest) nearly pure white (only the upper portion and sides of chest very faintly shaded with pale brownish gray, passing into pale buffy brown or light wood brown on sides and flanks and pale brownish buff on under tail-coverts); general color of upper parts lighter and more buffy brown.