752 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



tomia; mandible brownish white (in dried skins); legs and feet pale 

 horn brownish (in dried skins). 



Young, first plumage. — Pileum and sides of head plain deep sooty 

 brown or sepia; rest of upper parts plain olive- brown, the remiges and 

 rectrices as in adults; middle and greater wing-coverts tipped with 

 pale brownish buff, forming two distinct narrow bands across wing; 

 a supra-auricular streak of brownish buff; chin and upper throat dusky, 

 the feathers partly dull grayish white; lower throat dull brownish 

 buffy white; chest, breast, sides and flanks grayish brown, intennixed 

 with more rusty brown; median portion of breast and abdomen dull 

 buffy white. 



Advlt w;.a^e.— Length (skins), 121-132 (126); wing, 59-66 (63); tail, 

 58-62 (59.7); exposed culmen, 10-12 (11); tarsus, 23.^ 



Admit female.— Length, (skins), 120-134 (127.2); wing, 58-65(61); 

 tail, 55-61 (58); exposed culmen, 11; tarsus, 28.' 



Highlands of Costa Kica (San Jose; La Palma; Volcan de Irazu) 

 and Chiriqui (Volcan de Chiriqui; Boquete). 



Basileuterus melanogenys Baird, Review Am. Birds, May, 1865, 248 (San Jose?, 

 Costa Rica; coll. U. 8. Nat. Mus. ). — Lawrence, Ann. Lye. N. Y., ix, 1868, 95 

 (San Jos6). — Salvin, Proc. Zool. Soc. Lond., 1870, 183 ("Volcan de Chiriqui, 

 Veragua). — Salvin and Godman, Biol. Centr.-Am., Aves, i, 1881, 174, pi. 10, 

 fig. 3 (San Jos6 and Volcan de Irazd, Costa Rica; Volcan de Chiriqui).— 

 Shaepe, Cat. Birds Brit. Mus., x, 1885, 398.— Zeledqn, Anal. Mus. Nac. 

 Costa Rica, i, 1887, 107 (La Palma de San Jos6). — Cheeeie, Proc. U. S. Nat. 

 Mus., xiv, 1891, 528 (descr. young). — Bangs, Proc. New Engl. Zool. Club, ill, 

 1902, 60 (Boquete and Volcan de Chiriqui, Chiriqui, 4,500-10,200 ft.). 



^Basileuterus] melanogenys Sclater and Salvin, Nom. Av. Neotr., 1873, 10. 



BASILEUTERUS MELANOTIS Lawrence. 

 BLACK-EARED WARBLER. 



Adults {sexes alike). — Pileum with two broad lateral stripes of black, 

 inclosing a broad median stripe of pale grayish buff, the former extend- 

 ing to and including sides of nape, the latter more grayish on median 

 portion of nape, the middle portion (on crown) sometimes pure buff; 

 rest of upper parts plain greenish olive; a broad superciliary stripe, 

 involving anterior portion of lores, pale buffy gray; spot in front of 

 eye and postocular streak black, this extending to sides of neck and 

 sometimes involving posterior and lower portions of auricular region; 

 suborbital region, at least part of auricular region, and malar region 

 pale buffy grayish, like superciliary stripe; chin and upper throat dull 

 white; rest of under parts pale yellow (between canary and sulphur 

 yellow), passing into greenish olive on sides and flanks and more or less 

 strongly shaded with the same, or with grayish olive, on cheat; max- 

 illa brown, darker basally; mandible pale brown or brownish white (in 

 dried skins); iris yellow; ^ legs and feet pale brown (in dried skins). 



'Four specimens, from Chiriqui. ' Jos6 C. Zeledon, manuscript. 



