BIRDS OF NORTH AND MIDDLE AMERICA. 393 
(Chontales, Nicaragua; crit.)—Lawrence, Ann. Lyc. N. Y., ix, 1868, 122 
(Angostura and Pacuare, Costa Rica).—Frantzius, Journ. fir Orn., 1869, 
315 (Costa Rica).—Exuiot, Classif. and Synop. Troch., 1879, 47.—Mu.sant 
and VERREAUX, Hist. Nat. Ois.-Mouch., Suppl., pl. 9.—ZrLEep6n, Cat. Aves 
de Costa Rica, 1882, 20; Anal. Mus. Nac. Costa Rica, i, 1887, 121 (Jiménez, 
Costa Rica).—Nuttine, Proc. U. 8. Nat. Mus., vi, 1883, 406 (Los S&balos, 
Nicaragua).—Sa.vin and Gopman, Biol. Centr.-Am., Aves, ii, 1892, pl. 55, 
figs. 2, 3—CarrikER, Ann. Carnegie Mus., vi, 1910, 536 (Caribbean low- 
lands, Costa Rica; habits). 
Chalybura melanorhoa Boucarp, The Hum. Bird, ii, 1892, 84 (Verdgua). 
[Chalybura] melanorrhoa SciaTER and Savin, Nom. Av. Neotr., 1873, 82.—Mut- 
sant, Ann. Soc. Linn. Lyon, xxii, 1876, 203.—Suarrz, Hand-list, ii, 1900, 
117. 
C[halybura] melanorrhoa Hartert, Das Tierreich, Troch., 1900, 93 (monogr.). 
[Polytmus] melanorrhous Gray, Hand-list, i, 1869, 126, no. 1585. 
Lampornis melanorrhoa Mutsant and VERREAUX, Hist. Nat. Ois.-Mouch., i, livr. 
8, 1874, 174, pl. 14 (Ver4gua; Angostura and Pacuare, Costa Rica). 
Hypuroptila (Lampornis) melanorrhoa MuLsanT and VERREAUX, Hist. Nat. Ois.- 
Mouch., iv, livr. 2, 1877, 157. 
Hypuroptila melanorrhoa Goutp, Suppl. Troch., 1881, pl. 10.—Savin, Cat. Birds 
Brit. Mus., xvi, 1892, 90 (Chontales, Nicaragua; Tucurrfqui and Turrialba, 
Costa Rica).—Satvin and GopMan, Biol. Centr.-Am., Aves, ii, 1892, 276.— 
Boucarp, Gen. Hum. Birds, 1895, 324 (Costa Rica; Verdgua). 
Chalybura carnioli LAwRENCE, Proc. Ac. Nat. Sci. Phila., 1865, 39 (Angostura, 
Costa Rica; coll. U. 8. Nat. Mus.). 
Genus EUPHERUSA Gould. 
Eupherusa® Goup, Mon. Troch., pt. xiv, Sept., 1857, pl. 324. (Type, Ornismya 
eximia Delattre.) 
Rather small Trochilide (length about 90-95 mm.) with bill about 
as long as head, maxillary tomium serrate terminally, nasal operculum 
mostly nude, tail more than half as long as wing, rounded, with broad 
rectrices, secondaries rufous, and lateral rectrices mostly white (at 
least the inner web), the adult males bright metallic green below, with 
under tail-coverts white, the females pale gray or grayish white below. 
Bill about as long as head, straight, nearly terete; culmen rounded 
but basally contracted into a distinct narrow ridge; terminal portion 
of maxillary tomium minutely serrate; mandible and maxilla without 
distinct lateral median sulci. Nasal operculum narrow, mostly nude, 
the frontal feathering extending to or beyond its middle portion, and 
forming a slightly emarginate median antia. Tarsus feathered; mid- 
dle and inner toes about equal in length, the outer slightly shorter, the 
hallux shorter than outer toe. Wing a little more than three times as 
long as exposed culmen, the outermost primary longest. Tail more 
than half as long as wing, truncated or slightly rounded, the rectrices 
broad, with rounded tip. 
Coloration—Above metallic bronze-green, the middle rectrices 
dark bronze-green or blackish; secondaries cinnamon-rufous, usually 
a Eb, bene, feliciter, et depovca, gestans. (Gould.) 
