BIBDS OF NORTH AND MIDDLE AMERICA. 393 



(Chontales, Nicaragua; crit.)- — Lawrence, Ann. Lye. N. Y., ix, 1868, 122 

 (Angostura and Pacuare, Costa Rica). — Frantzius, Journ. ftir Orn., 1869, 

 315 (Costa Rica). — Elliot, Classif. and Synop. Troch., 1879, 47. — Mulsant 

 and Verreaux, Hist. Nat. Ois.-Mouch., Suj^pL, pi. 9. — Zeledon, Cat. Aves 

 de Costa Rica, 1882, 20; Anal. Mus. Nac. Costa Rica, i, 1887, 121 (Jimenez, 

 Costa Rica).— Nutting, Proc. U. S. Nat. Mus., vi, 1883, 406 (Los Sdbalos, 

 Nicaragua). — Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1892, pi. 55, 

 figs. 2, 3. — Carriker, Ann. Carnegie Mus., vi, 1910, 536 (Caribbean low- 

 lands, Costa Rica; habits). 



Chalybura melanorhoa Boucard, The Hum. Bird, ii, 1892, 84 (Veragua). 



[Chalybura] melanorrhoa Sclater and Salvin, Nom. Av. Neotr., 1873, 82. — Mul- 

 sant, Ann. Soc. Linn. Lyon, xxii, 1876, 203. — Sharpe, Hand-list, ii, 1900, 

 117. 



C[halybura] melanorrhoa Hartert, Das Tierreich, Troch., 1900, 93 (monogr.). 



[Polytinus] melanorrhous Gray, Hand-list, i, 1869, 126, no. 1585. 



Lampornis vielanorrhoa Mulsant and Verreaux, Hist. Nat. Ois.-Mouch., i, livr. 

 3, 1874, 174, pi. 14 (Veragua; Angostura and Pacuare, Costa Rica). 



Hypuroptila (Lampornis) melanorrhoa Mulsant and Verreaux, Hist. Nat. Ois.- 

 Mouch., iv, livr. 2, 1877, 157. 



Hypuroptila melanorrhoa Gould, Suppl. Troch., 1881, pi. 10. — Salvin, Cat. Birds 

 Brit. Mus., xvi, 1892, 90 (Chontales, Nicaragua; Tucurriqui and Turrialba, 

 Costa Rica). — Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1892, 276. — 

 Boucard, Gen. Hum. Birds, 1895, 324 (Costa Rica; Veragua). 



Chalybura carnioli Lawrence, Proc. Ac. Nat. Sci. Phila., 1865, 39 (Angostura, 

 Costa Rica; coll. U. S. Nat. Mus.). 



Genus EUPHERUSA Gould. 



Eupherusa"- Gould, Mon. Troch., pt. xiv, Sept., 1857, pi. 324. (Type, Ornismya 

 exiniia Delattre . ) 



Rather small Trochilidse (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 emarginato median antia. Tarsus feathered ; mid- 

 dle and inner toes about equal in lengtli, the outer slightly shorter, the 

 hallux shorter than outer toe. Wing a little morQ 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 



«£5, benfe, feliciter, et 4'^pouaa, gestans. (Gould.) 



