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 olive, produc- 
ing a more or less squamate effect, these dusky edgings much broader 
on sides of chest; under wing-coverts 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 blackish, 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); wing, 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 
José; El Roble, Volcan de Irazi; Volcan de Turrialba; Escazi; Las 
Vueltas, Los Reyes, and Santa Maria, Dota; Ojuras de Térraba) and 
western Panama (Cordillera del Chucu; Calobre; Volcan de Chiriquf, 
10,000-10,300 ft.; Boquete, 7,500 ft.). 
Pseudocolaptes boissoneauti (not Anabates boissonneautit Lafresnaye) Savin, 
Proc. Zool. Soc. Lond., 1870, 192 (Cordillera del Chucu, Verdgua; crit.). 
Pseudocolaptes boissoneauti? BoucarD, Proc. Zool. Soc. Lond., 1878, 59 (Navarro, 
Costa Rica; crit.). 
Pseudocolaptes lawrencitt Rripeway, Proc. U.S. Nat. Mus., i, sig. 16, Dec. 10, 1878, 
253; 254 (Navarro and La Palma de San José, Costa Rica; coll. U. S. Nat. 
Mus.).—SciaTer, Cat. Birds Brit. Mus., xv, 1890, 79 (Cordillera del Chucu 
a Twelve specimens. 
a 
Locality. Wing. | Tail. aS Tarsus. fee 
MALES. 
Ten adult males from Costa Rica.......-....02-..20-- eee eee ee 107.2 92.7 21.5 25.5 17.5 
Two adult males from western Panamé (Chiriqu{)............. 101.5} 86.2] 23.5] 24 17.7 
FEMALES, 
Ten adult females from Costa Rica........-.-..--.+--eeeeeee eee 97.5 88.3 23.5 24,2 17 
Two adult females from western Panamé (Chiriquf)........... 100. 2 87.7 24 24.7 18.2 
