20 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Adult /eTOafe.— Forehead (extending backward lateMly to above 

 middle of eyes)chestnut-rafous; rest of upper parts plain olive-green, 

 more yellowish on lower rump and upper tail-coverts, the crown, 

 occiput, hindneck, back, upper rump, scapulars, and smaller wihg- 

 00 verts glossed with metallic bluish green; remiges and rectrices dusky 

 with yellowish olive-green edgings, broadest on tertials, narrowest 

 and more yellowish on primaries; sides of head and neck and most of 

 under parts yellowish olive-green or deep olive-yellowish, lighter and 

 more decidedly yellowish on chin, throat, and anterior portion of 

 malar and loral regions ; entire abdomen light tawny or deep ochraceous; 

 anal region and under taU-coverts similar, but more orange-ochra- 

 ceous; maxilla black, mandible grayish with dusky tip; legs and feet 

 dusky horn color; length (skins), 94-100.3 (97); wing, 57.4^58.4(67.9); 

 tail, 29.2-32 (30.5); exposed culmen, 8.1-8.6 (8.4); depth of bill at 

 base, 4.8-5.1 (4.9); tarsus, 15.5-15.7 (15.7); middle toe, 10.7-10.9 

 (10.9).' 



In the metallic olive-green color of the upper parts and tawny abdo- 

 men the adult female of E. gracilis presents a strong resemblance to 

 the adult male of E. gouldi; but the latter may at once be distinguished 

 by the yellow instead of chestnut forehead, the deeper tawny of the 

 abdomen and under tail-coverts (especially the latter), the former 

 being margined laterally with yellow and the decidedly less bluish- 

 green gloss of the upper parts. 



Costa Rica (San Jos6; Pozo Azul de Pirris) and Chiriqui (Volcan de 

 Chiriqui; Bugaba). 



Phonasca gracilis Cabanis, Journ. fiir Orn., viii, Sept. 1860, 333 (San Jos6, Costa 

 Eica; coll. Berlin Mus.). 



Euphonia gracilis Sclatbe, Cat. Am. Birds, 1862, 359 (Costa Kica); Cat. Birds 

 Brit. Mus., xi, 1886, 69 (Costa Eica; Bugaba and Volcan de Chiriqui, Chiri- 

 qui). — Cassin, Proc. Ac. Nat. Sci. Phila., 1865, 172 (Costa Eica). — Lawrence, 

 Ann. Lye. N. Y., ix, 1868, 98 (San Jos6).— Feantzius, Journ. fiir Orn., 1869, 

 297 (San Jos6).— Salvin, Proc. Zool. Soc. Lond., 1870, 186 (Volcan de Chi- 

 riqui; Bugaba). — Salvin and Godman, Biol. Centr.-Am., Aves, i, 1883, 259, 

 pi. 16, flg. 3.— Zeledon, Anal. Mus. Nac. Costa Eica, i, 1887, 109 (Pozo Azul 

 de Pirris).— Cheerie, Proc. U. S. Nat. Mus., xiv, 1891, 530 (Pozo Azul; 

 descr. female; crit.); Auk, ix, 1892, 24 (San Jos6). 



[Euphonia] gracilis Sclatee and Salvin, Nom. Av. Neotr., 1873, 17. 



A{eroleptes] gracilis Cabanis, Journ. fiir Orn., 1861, 91, in text. 



EUPHONIA LUTEICAPILLA (Cabanis). 

 TELLOW-CROWITED EUPHONIA. 



Adult male. — Forehead and entire crown deep lemon or gamboge 

 yellow, the former with a narrow anterior margin of black (inter- 

 rupted at base of culmen); lores black; sides of head (below the yel- 

 low pileum), chin, throat, upper chest (the latter with a strongly 



^ Three specimens. 



