88 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



less at posterior extremity) black; bill black; iris brown; legs and 

 feet horn color (in dried skins); length (skins), 109.2-137.2 (124.2); 

 wing, 69.6-80 (74.7); tail 44.7-53.1 (49.3); exposed culmen, 9.4-10.7 

 {9.9)1 depth of bill at base, 5.1-5.6 (5.3); tarsus, 17-19.1 (17.S); middle 

 toe, 11.4-12.7 (12.2).^ 



Adult femcde.SimWuY in color to the adult male and not always 

 distinguishable, but usually more or less duller in color; length (skins), 

 127-132.1(129.5); wing, 70.1-78.2 (72.6); tail, 43.9-53.1 (47.2); exposed 

 culmen, 9.9-10.2 (10); depth of bill at base, 5.1-5.8 (5.3); tarsus, 

 17.3-18 (17.8); middle toe, 11.9-12.2.-' 



Ymmg m«Ze.— Much duller in coloration than the dullest adult 

 females; aboye oliye-green, slightly tinged with yellow on sides of 

 head, more decidedly yellowish on rump; feathers of pileum with 

 small triangular or sagittate central spots of blackish, the interscapulars 

 and scapulars with large dusky markings of similar position and shape; 

 wings and tail blackish with yellowish green edgings; malar region, 

 chin'', and throat dull greenish buffy; rest of under parts buffy yellow 

 (naples or maize), medially more yellowish, more oliye-greenish 



laterally. 



Young female.— SimWar to the young male but still duller in color. 



Costa Rica (San Jose; Dota; Turrialba; Barranca; Candelaria Mts. ; 

 Naranjo; Orosi; Cartago; San Marco, etc.), southward through Colom- 

 bia to Ecuador (Punta Playa, near Quito; Nanegal; Pasto; Napo; Bois 

 de Bagnos; Tongaragua, etc.). 



Callwte icterocephala Bonaparte, Compt. Rend., xxxii, 1851, 76 (Punta Playa, 

 near Quito, Ecuador).— Sclatek, Jardine's Contr. Orn., 1851, 53, pi. 70, tig. 

 1; Proc. Zool. Soc. Lond., 1856, 19, 251 (nionogr.; Punta Playa, Ecuador); 

 1860, 87 (Nanegal, w. Ecuador) ; Synop. Av. Tanagr., 1856, 77; Monogr. Cal- 

 liste 1857, 37, pi. 17 (Quito, Ecuador); Cat. Am. Birds, 1862, 65 (Nanegal); 

 Cat.' Birds Brit. Mus., xi, 1886, 110 (Nanegal, Pasto, and Napo, Ecuador; 

 Frontino, Colombia; Volcan de Chiriqui; Santa Fe, Calovevora, and Cor- 

 dillera de ToM, Veragua; San Jose, Dota, Turrialba, and Barranca, Costa 

 Rica).— Salvin, Proc. Zool. Soc. Lond., 1867, 138 (Cordillera de Tol6 and 

 Santa Fe, Veragua; crit.); 1870, 186 (Volcan de Chiriqui; Boquete de 

 Chitra, Cordillera del Chuca, and Calovevora, Veragua).— Lawrence, Ann. 



1 Seven specimens. 



^ Four specimens from Costa Rica. 



Costa Rican and Ecuadorean males compare in average measurements as follows: 



I am not able to detect any color differences, and the determination of sex being 

 in some cases open to question, the apparent .lifference in size may prove mconstant. 



