198 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



maculate pale buff or buffy white, passing into clear buff on sub- 

 auricular region and sides of upper neck, where feathers are devel- 

 oped into a short but distinct tuft; rest of under parts pale yellowish 

 buff, passing into light tawny-brown or cinnamon on sides, flanks, 

 and under tail-coverts, the feathers of chest and lower throat edged 

 and (usually) terminally margined with dusky or dark ohve, produc- 

 ing a more or less squamate effect, these dusky edgings much broader 

 on sides of chest; under Aving-co verts ochraceous-buff; inner webs 

 of remiges broadly but not sharply edged with pale brownish buffy; 

 maxilla brownish black, paler on tomium; mandible dull whitish (in 

 dried skins) with a broad dusky streak along upper portion; legs and 

 feet horn color (in dried skins). 



Young. — Similar to adults but pileum and auricular region nearly 

 (sometimes quite) uniform black or brownish black, chest heavily 

 squamated with black or dusky, feathers of whole throat more or 

 less broadly margined with blacldsh, and under parts of body more 

 tawny. 



Adult male.— Length (skins), 187-203 (197); wing, 98-114 (106.3); 

 tail, 85-97.5 (91.6); culmen, 20.5-23.5 (21.9); tarsus, 23.5-27 (25.4); 

 middle toe, 17-18.5 (17.7).'^ 



Adult female.— Length (skins), 185-201 (195); wmg, 96.5-102.5 

 (99.7); tail, 84-92.5 (88.2); culmen, 21.5-25 (23.6); tarsus, 23.5-25.5 

 (24.3); middle toe, 16.5-18.5 (17.2).« 



Highlands of Costa Rica (Navarro de Cartago; La Palma de San 

 Jose; El Roble, Volcan de Irazii; Volcan de Turrialba; Escazu; Las 

 Vueltas, Los Reyes, and Santa Maria, Dota; Ojuras de Terraba) and 

 western Panama (Cordillera del Chucu; Calobre; Volcan de Chiriqui, 

 10,000-10,300 ft.; Boquete, 7,500 ft.). 



Pseudocolaptes boissoneauti (not Anabates boissonneautii Lafresnaye) Salvin, 



Proc. Zool. Soc. Lond., 1870, 192 (Cordillera del Chucu, Veragua; crit.). 

 Pseudocolaptes boissoneauti? Boucard, Proc. Zool. Soc. Lend., 1878, 59 (Navarro, 



Costa Rica; crit.). 

 Pseudocolaptes lawrendi Ridgway, Proc. U. S. Nat. Mus., i, sig. 16, Dec. 10, 1878, 



253, 254 (Navarro and La Palma de San Jos6, Costa Rica; coll. U. S. Nat. 



Mus.).— ScLATER, Cat. Birds Brit. Mus., xv, 1890, 79 (Cordillera del Chucu 



