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 mth 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 low^er back and rump indistinctly margined with rusty. 



Highlands of Costa Rica (Turrialba; Tucurriqui; Juan Vinas; 

 Carrillo; La Hondura; Navarro; Rancho Redondo; Naranjo de 

 Cartago; Cariblanco de Sarapiqui; Las CJruces de Candelaria) and 

 western Panama (Chiriqui).^ 



Oreopyra hemilexica Salvin, Proc. Zool. Soc. Loud., 1864 (pub. April 1, 1865), 

 584 (Turrialba and Tucurriqui, Costa Rica; coll. Salvin and Godman). — 

 Lawrence, Ann. Lye. N. Y., ix, 1868, 125 (Turrialba; Tucurriqui). — 

 Frantzius, Journ. fiir Orn., 1869, 316 (Las Cruces de Candelaria and Rancho 

 Redondo, Costa Rica). — Boucard, Proc. Zool. Soc. Lond., 1878, 69 (Naranjo 

 de Cartago, Costa Rica); Gen. Hum. Birds, 1895, 222 (Navarro and Turrialba, 

 Costa Rica). — Mulsant and Verreaux, Hist. Nat. Ois.-Moucli., iv, livr. 3, 

 1878, 167 (Turrialba; Tucurriqui); Suppl., pi. 15. 



{Oreopyra\ hemileiica Sclater and Salvin, Nom. Av. Neotr., 1873, 80. — Mulsant, 

 Ann. Soc. Linn. Lyon, xxii, 1876, 203. 



Caeligena hemileuca Elliot, Classif. and Synop. Troeh., 1879, 31. — Ridgway, 

 Proc. U. S. Nat. Mus., lii, 1880, 310. 



Caeligena hemileuca Zeled5n, Cat. Aves de Costa Rica, 1882, 20. 



Coeligena hemileuca Sharpe, Suppl. Gould's Men. Troch., 1885, pi. 5. — Zeledon, 

 Anal. Mus. Nac. Costa Rica, i, 1887, 121 (Naranjo de Cartago). — Hartert, 

 Journ. fiir Orn., 1900, 366 (Cliiriqui, Panama; crit.). — Carriker, Ann. 

 Carnegie Mus., vi, 1910, 540 (Caribbean slope, Costa Rica, 2,000-4,000 ft.: 

 habits). 



C[ailigena] hemileuca Ridgway, Rep. U. S. Nat. Mus. for 1890 (1891), 324 (diag- 

 nosis, etc.). 



[Coeligeiia] hemileuca Sharpe, Hand-list, ii, 1900, 122. 



[Coeligenal hemileuca Simon, Cat. Troch., 1897, 25. 



C[oeligend\ heviileuca Hartert, Das Tierreich, Troch., 1900, 115. 



[Trochilus] hemileucus Gray, Hand-list, i, 1869, 138, no. 1766. 



Delattria hemileuca Salvin, Cat. Birds Brit. Mus., xvi, 1892, 311. — Salvin and 

 Godman, Biol. Centr.-Am., Aves, ii, 1892, 337, pi. 54, figs. 3, 4. 



OREOPYRA SYBILLiE (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. b According to Hartert, Journ. fur Orn., 1900, 366. 



