798 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



auricular region whitish, faintly tinged with pale olive-yellow, the 

 suborbital and malar regions with transverse flecks or indistinct bars 

 of slate color; chin and throat grayish white; back, scapulars, rump, 

 upper tail-coverts, and lesser wing-coverts plain, rather light, olive- 

 green; tail light hair brown, the rcctrices edged with light olive-green; 

 middle wing-coverts dusky hair brown, broadly tipped, across both 

 webs, with whitish, tinged with olive-yellowish; greater coverts and 

 remiges dusky, the former narrowly edged with light olive-grayish, 

 their outer webs tipped with whitish, the secondaries edged with 

 yellowish olive-green, becoming whitish on the three innermost 

 (tertials) ; under parts of body, under wing-coverts, and under tail- 

 coverts pale yellow (between sulphur and primrose), the chest and 

 sides of breast shaded with pale olive; maxilla dark brown, mandible 

 pale brownish or brownish whi'e (in dried skin); iris brown;'* legs 

 and feet dusky (in dried skin); length (skin), about 110; wing, 62.5; 

 tail, 48; exposed culmen, about 7.5;^ tarsus, 14; middle toe, without 

 claw, 8.<^ 



Adult female. — Similar to the male (as described above), but back 

 brighter and more uniform olive-green, rather abruptly defined 

 against the slate color of pileum and hindneck ; lighter wing-markings 

 sulphur yellow instead of whitish (except in one specimen); under 

 parts of body slightly deeper yellow (more nearly sulphur yellow), 

 the chest and sides of breast indistinctly streaked with light olive; 

 length (skins), 106-112 (108); wing, 59.5-61.5 (60.7); tail, 44.5-46 

 (45.1); exposed culmen, 8.5-9 (8.7); tarsus, 13.5-15 (14.4); middle 

 toe, 8.5-9 (8.9).'' 



Costa Rica (Barranca; Dota) and northwestern Panama (Boquete, 

 Chiriqui) . 



Pogonotriccus ? zeledoni Lawrence, Ann. Lye. Nat. Hist. N. Y., ix, 1868, 144 



(Dota, Costa Rica; coll. U. S. Nat. Mus.). 

 Pogonotricciis zeledoni Zeledon, Proc. U. S. Nat. Mus., viii, 1885, 108. — Salvin 

 and GoDMAN, Biol. Centr.-Am., Aves, ii, 1888, 19. — Bangs, Proc. New Engl. 

 Zool. Club, iii, 1902, 35 (Boquete, Panama, 4,000 to 4,500 ft.). 

 [Po(jonotriccus\ zeledoni Sharpe, Hand-list, iii, 1901, 111. 



Idiotriccus zeledoni Ridgway, Proc. Biol. Soc. Wash., xviii, Sept. 2, 1905, 210. 

 (??) Pogonotriccus ophthabnicus Taczanowski, Proc. Zool. Soc. Lond., 1874, 135 

 (Amable Maria, centr. Peru; coll. Mus. Warsaw), 535 (Amable Maria and 

 Ropaybamba, centr. Peru); 1882, 19 (Huambo, n. e. Peru); Orn. du Perou, 

 ii, 1884, 250. — Taczanowski and Berlepsch, Proc. Zool. Soc. Lond., 1885, 

 89 (Ecuador).— ScLATER, Cat. Birds Brit. Mus., xiv, 1888, 98 (Ropaybamba 

 and Huambo, Peru; Macliay, Ecuador). 



o J. Carmiol, manuscript. 



b Tip of bill broken off. 



c One specimen (the type). 



d Four specimens (three from Boquete, Panama, one from Barranca, Costa Rica. ) In 

 all probability there is in reality no sexual difference of coloration in this species, the 

 single male example examined being evidently in older plumage than the females, and 

 therefore somewhat faded, 



