508 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
skins); length (skins), 99-109 (105); wing, 62-64.5 (63.3); tail, 
36-39 (37.5); culmen, 16.5-19.5 (18.8).¢ 
Adult female.—Similar to the adult male, but chin and throat white 
spotted laterally with metallic green, rectrices (except middle pair) 
crossed by a distinct subterminal band of dusky, and metallic emerald 
green of forehead, etc., less brilliant; length (skins), 92-105 (98); 
wing, 55-60 (57.9); tail, 32.5-36 (34); culmen, 18.5-21 (19.6).¢ 
Young male.—Essentially like the adult male, but without the 
purple throat-patch, the sides of throat being brownish dusky, the 
chin and upper median portion of throat much as in adult male; 
white of under parts duller, and upper parts more bronzy, with 
feathers of lower back and rump indistinctly margined with rusty. 
Highlands of Costa Rica (Turrialba; Tucurriqui; Juan Vifias; 
Carrillo; La Hondura; Navarro; Rancho Redondo; Naranjo de 
Cartago; Cariblanco de Sarapiqui; Las Cruces de Candelaria) and 
western Panama (Chiriquf).? 
Oreopyra hemileuca Satvin, Proc. Zool. Soc. Lond., 1864 (pub. April 1, 1865), 
584 (Turrialba and Tucurriqui, Costa Rica; coll. Salvin and Godman).— 
Lawrence, Ann. Lyc. N. Y., ix, 1868, 125 (Turrialba; Tucurrfqui).— 
Franrzius, Journ. fiir Orn., 1869, 316 (Las Cruces de Candeldria and Rancho 
Redondo, Costa Rica).—Bovucarp, Proc. Zool. Soc. Lond., 1878, 69 (Naranjo 
de Cartago, Costa Rica); Gen. Hum. Birds, 1895, 222 (Navarro and Turrialba, 
Costa Rica).—Muusant and VERREAUX, Hist. Nat. Ois.-Mouch., iv, livr. 3, 
1878, 167 (Turrialba; Tucurriqui); Suppl., pl. 15. 
[Oreopyra] hemileuca ScLaTER and Satvin, Nom. Av. Neotr., 1873, 80.—Mutsant, 
Ann. Soc. Linn. Lyon, xxii, 1876, 203. 
Celigena hemileuca Exiior, Classif. and Synop. Troch., 1879, 31.—Ripeway, 
Proc. U. 8S. Nat. Mus., iii, 1880, 310. 
Caeligena hemileuca ZELEDON, Cat. Aves de Costa Rica, 1882, 20. 
Celigena hemileuca SHarpe, Suppl. Gould’s Mon. Troch., 1885, pl. 5.—ZELEpon, 
Anal. Mus. Nac. Costa Rica, i, 1887, 121 (Naranjo de Cartago).—Harrerr, 
Journ. fiir Orn., 1900, 366 (Chiriquf, Panam4; crit.).—CarrixEeR, Ann. 
Carnegie Mus., vi, 1910, 540 (Caribbean slope, Costa Rica, 2,000-4,000 ft.: 
habits). 
Cleligena] hemileuca Ripaway, Rep. U. 8. Nat. Mus. for 1890 (1891), 324 (diag- 
nosis, etc.). 
[Celigena] hemileuca SHarre, Hand-list, ii, 1900, 122. 
[Coeligena] hemileuca Simon, Cat. Troch., 1897, 25. 
C[oeligena] hemileuca Hartert, Das Tierreich, Troch., 1900, 115. 
[Trochilus] hemileucus Gray, Hand-list, i, 1869, 138, no. 1766. 
Delatiria hemileuca Satvin, Cat. Birds Brit. Mus., xvi, 1892, 311.—Sanvin and 
GopmaNn, Biol. Centr.-Am., Aves, ii, 1892, 337, pl. 54, figs. 3, 4. 
OREOPYRA SYBILLZ (Salvin and Godman). 
SYBIL’S MOUNTAIN GEM. 
Adult male.—Above deep metallic grass green, becoming slightly 
more bronzy on rump; upper tail-coverts black; four middle rectrices 
grayish black, the other rectrices pale gray or grayish white margined 
@ Ten specimens. 6 According to Hartert, Journ. fiir Orn., 1900, 366. 
