BIRDS OF NORTH AWD MIDDLE AMERICA. 577 



more rufescent (nearly prouts brown) on rump and upper tail-coverts, 

 the latter narrowly barred with dusk}^; back and scapulars sometimes 

 (rarely) with very indistinct narrow bars of darker; feathers of rump 

 with large concealed roundish or guttate spots or streaks of white, 

 their basal portion slate color; tail brown (varying from dull russet- 

 brown or mars brown to a duller or more grayish hue), barred with 

 dusky, the bars on middle rcctrices usually broken or irregular; wings 

 similar in color to tail, but slightly duller, the greater coverts and 

 remiges barred with dusky, the brown interspaces paler on outermost 

 primaries; tip of outermost middle coverts usually with a minute 

 mesial weage-shaped spot or streak of whitish; a narrow and rather 

 distinct but not sharply-defined superciliary streak of pale cinnamon- 

 buff; a rather distinct broad postocular streak of brown on upper 

 portion of auricular region; suborbital and auricular regions (except 

 upper part of latter) indistinctly streaked with grayish brown and pale 

 cinnamon-buff'; malar region and under parts cinnamon-buff or pale 

 buff'y cinnamon, paler on throat and abdomen (especially the latter) 

 where sometimes inclining to white, deeper and more decidedly cinna- 

 mon or cinnamon-brown on flanks, where sometimes indistinctly barred 

 with darker brown or dusky ; under tail-coverts light cinnamon, tipped 

 with white or whitish, and broadly barred with black; axillars and 

 under wing-coverts plain cinnamon-buff; maxilla dusky brown or 

 blackish with paler tomia; mandible pale brownish (in dried skins); 

 iris brown; legs and feet light horn brown (in dried skins). 



Adults in autumn and winter. — Similar to the spring and summer 

 plumage but browner above and deeper colored beneath, the under 

 parts deep cinnamon-buff'. 



Young. — Essentially like adults, but under tail-coverts plain cin- 

 namon or russet, pale superciliarj' and brown postocular streaks 

 indistinct, and under parts duller brownish buff}- (the throat, etc., 

 tinged with grayish), and feathers of chest and sides of breast nar- 

 rowly and very indistinctly margined with brownish. 



Adult mafo.— Length (skins), 101-114 (108); wing, 48-53 (51.1); 

 tail, 32-38.5 (36.3); exposed culmen, 12-14 (13.2); tarsus, 17-19.5 

 (18.7); middle toe, 12-14 (13.3).« 



Adult female.— l.Qw^t\\ (skins), 94-106 (100); wing, 45^9.5 (47.8); 

 tail, 31-36(33.5); exposed culmen, 13-14 (13.5); tarsus, 17.5-18 (17.8); 

 middle toe, 12-13 (12.7).* 



Costa Eica (San Jose; Santa Maria de Dota; Monte Redondo; Bar- 

 ranca; Cartago; Naranjo; Birris; Tucurrique), eastern Nicaragua 

 (Chontales; Rio Escondido), and southern Honduras (Rio Segovia). 



Troglodytes inlermedius Cabanis, Journ. fiir. Orn., viii, Nov., 1860, 407 (San Jos6, 

 Costa Rica; coll. Berlin Mus. ). — Baird, Review Am. Birds, 1864, 142, part 

 (San Jose, Costa Rica). — Lawrence, Ann. Lye. N. Y., ix, 1868, 93 (San Jose 



"■'Nine specimens. ''Three specimens. 



10384— VOL 3—03 37 



