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; Panamé; Bugaba; David; Chitra; Boquete; 
Calobre; Cordillera del Chucu; Calovévora; Santiago de Verégua), 
southern Costa Rica (Talamanca; El Generél; Buenos Aires de 
Térraba; Boruca), and northern Colombia (Boquerén). 
Trochilus ( 2) niveoventer GouLp, Proc. Zool. Soc. Lond., 1850, 164 (near 
David, Verégua, Panamé; coll. J. Gould). 
[Chlorestes. 7. 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, pl. 700, figs. 
4566, 4567. 
Erythronota niveiventris Goutp, Mon. Troch., pt. xv, May, 1858 (vol. v), pl. 319; 
Introd. Troch., oct. ed., 1861, 161.—Satvin, Proc. Zool. Soc. Lond., 1867, 
155 (David and Santiago, Panamé4; crit.); 1870, 210 (Volcén de Chiriquf, 
Chitra, Cordillera del Chucu, and Calovévora, Panam4),—Bovucarp, Notes 
quelques Troch., 1873, 12 (Veraégua). 
H[emithylaca] niveiventris CaBaNnis and HEINE, Mus. Hein., iii, 1860, 37 (Vera- 
gua).—Heine, Journ. fiir Orn., 1863, 192. 
@ Sixteen specimens. b Ten specimens, from Costa Rica. 
Ex- 
Locality. Wing. | Tail. | posed 
lculmen. 
MALES 
Ten adult_males from Costa Rica... ......-.-...--eee eee e eee e nee ee eect eee neces 54.3 30 17.9 
Five adult males from Panamé....... 2.22.2... - 00 eee eee ee eee ence eee e cece e ee 51.8 29.7 19 
One adult male from northwestern Colombia (Boqueron)....................-.- 50.5 30 19 
