442 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



bronze, more or less coppery; rump and shorter upper tail-coverts 

 grayish brown or olive, glossed with bronze, the longer upper tail- 

 coverts dusky purplish bronze; tail slightly glossy violaceous-black, 

 the middle rectrices sometimes glossed with purplish basally ; remiges 

 dark brownish slate or dusky, faintly glossed with violaceous; malar 

 region, chin, throat, sides of neck, breast, and sides bright metallic 

 green (yellowish emerald green), the feathers of chin, throat, and 

 chest grayish white beneath surface, dusky grayish basally, those of 

 other parts brownish gray beneath surface; abdomen, anal region, 

 femoral tufts, and lumbar tufts white; under tail-coverts brownish 

 gray, with darker shaft-streaks, margined with whitish; maxilla dull 

 black; mandible pale brownish (reddish in life), dusky, or blackish 

 terminally; iris dark brown; feet dusky; length (skins), 86-94 (89); 

 wing, 50-56 (53.5); tail, 29-31 (29.9); culmen, 17.5-19.5 (18.3).« 



Adult female. — Similar to the adult male and frequently not distin- 

 guishable, but usually (?) very slightly duller in coloration; length 

 (skins), 84-89 (87); wing, 49.5-52.5 (51); tail, 28-30 (29); culmen, 

 18-19.5 (18.8).'' 



Panama (Lion Hill; Panama; Bugaba; David; Chitra; Boquete; 

 Calobre; Cordillera del Chucu; Calovevora; Santiago de Ver^gua), 

 southern Costa Rica (Talamanca; El General; Buenos Aires de 

 Terraba; Boruca), and northern Colombia (Boqueron). 



Trochilus ( ?) niveoventer Gould, Proc. Zool. Soc. Lond., 1850, 164 (near 



David, Verdgua, Panamd; coll. J. Gould). 

 [Chlorestes. y. Saucerottia] niveiventer Reichenbach, Aufz. der Colibr., 1854, 8. 

 [Thaumantias] niveiventer Bonaparte, Rev. et Mag. de Zool., 1854, 255. 

 [Chlorestes] niveiventris Reichenbach, Troch. Enum., 1855, 4, pi. 700, figs. 



4566, 4567. 

 Erythronota niveiventris Gould, Mon. Troch., pt. xv, May, 1858 (vol. v), pi. 319; 



Introd. Troch., cot. ed., 1861, 161.— Salvin, Proc. Zool. Soc. Lond., 1867, 



155 (David and Santiago, Panama; crit.); 1870, 210 (Volcdn de Chiriqui, 



Chitra, Cordillera del Chucu, and Calovevora, Panamd). — Boucard, Notes 



quelques Troch., 1873, 12 (Verdgua). 

 H[emithylaca] niveiventris Cabanis and Heine, Mus. Hein., iii, 1860, 37 (Vera- 



gua). — Heine, Journ. fiir Orn., 1863, 192. 



o Sixteen specimens. ^ Ten specimens, from Costa Rica. 



