392 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
Mus., xvi, 1892, 89 (Boca del Toro; Santa Fe and Santiago de Veragua).— 
Satvin and Gopman, Biol. Centr.-Am., Aves, ii, 1892, 275.—Boucarp, Gen. 
Hum. Birds, 1895, 324. 
[Hypuroptila] isaurae Mutsant, Ann. Soc. Linn. Lyon, xxii, 1876, 203. 
Hypuroptila (Lampornis) isaure Mutsant and VERREAUX, Hist. Nat. Ois.- 
Mouch., iv, livr. 2, 1877, 158 (synon.) 
Chalybura? tsaure GouLp, Introd. Troch., oct. ed., 1861, 72. 
Chalybura isaure Satvin, Proc. Zool. Soc. Lond., 1867, 152 (Santiago and Santa 
Fé de Ver4gua, Panam4; descr. female).—Lawrence, Ann. Lyc. N. Y., ix, 
1868, 122 (Boca del Toro).—Frantzius, Journ. fiir Orn., 1869, 315 (Costa 
Rica).—Ezior, Classif. and Synop. Troch., 1879, 46.—ZELEDON, Cat. Aves 
de Costa Rica, 1882, 20; Anal. Mus. Nac. Costa Rica, i, 1887, 122.—Bovucarp, 
The Hum. Bird, ii, 1892, 85 (Verdgua).—Carrixer, Ann. Carnegie Mus., vi, 
1910, 537 (Costa Rica). 
[Chalybura] isaure SctaTEeR and Satvin, Nom. Av. Neotr., 1873, 82.—SHarpz, 
Hand-list, ii, 1900, 117. 
Clhalybura] isaurae Hartert, Das Tierreich, Troch., 1900, 92 (monogr.). 
[Polytmus] tsaure Gray, Hand-list, i, 1869, 126, no. 1586. 
Lampornis isaure Mutsant and VERREAUX, Hist. Nat. Ois.-Mouch., i, livr. 3, 
1874, 174 (Boca del Toro, Santa Fe, and Santiago, Panamé). 
CHALYBURA MELANORRHOA Salvin. 
DUSKY PLUMELETEER. 
Adult male-—Above dark metallic grass-green, passing into bronze 
on rump and into bronze-green or greenish bronze on wing-coverts; 
upper tail-coverts dusky bronzy purplish; tail purplish bronze; 
remiges dusky purplish brown, the inner secondaries bronze-green or 
greenish bronze; primary coverts darker, indistinctly tipped with 
dull bronze-green; under parts deep metallic grass-green, passing 
into dusky bronze on abdomen and flanks; under tail-coverts dull 
black or dusky, glossed with bronzy purple; anal tufts dull grayish; 
maxilla black, mandible pale brownish (flesh color in life) dusky ter- 
minally; iris dark brown; feet pale brownish (purplish red or lake 
red in life); length (skins), 111-119 (115); wing, 68.5-72.5 (70.2); 
tail, 44-48 (46.2); culmen, 22.5-24 (23.3).¢ 
Adult female—Similar to the adult male in color of upper parts, 
but under parts dull brownish gray, with sides (especially sides of 
breast) mostly metallic green, the chest sometimes spotted with the 
same; lateral rectrices broadly tipped with brownish gray; bill, etc., 
as in adult male; length (skins), 102-108 (105); wing, 61-65.5 
(63.2); tail, 36.5-41 (88.5); culmen, 22-24.5 (23.3).¢ 
Caribbean slope of Nicaragua (Chontales; Los Sébalos) and Costa 
Rica (Angostura; Tucurriqui; Turrialba; Juan Vifias; Jiménez; 
Bonilla; El Hogar; Rio Sicsola; Cuabre; Gudpiles; La Junta; La 
Vijagua; Pacuare; Talamanca) to western Panama (Verdgua). 
Chalybura melanorrhoa Sauvin, Proc. Zool. Soc. Lond., 1864 (pub. April 1, 1865), 
585 (Tucurriqui, Costa Rica; coll. Salvin and Godman); Ibis, 1872, 313, 319 
@ Ten specimens, 
