252 Genera of Humming Birds. 



Genus CI. Eriocnemis, Reich., Syst. Av., 1849, pl- xl. 



Eriopus, Gould, P.Z.S., 1847, P- ^^- Already employed 

 for Lepidoptera. 



Threptria^ Reich., Syst. Av., 1854, pi. xi. 



Phemonoe, Reich., Syst. Av., 1854, pi. ix. 



Nania, Muls., Cat. Ois. Mou., 1875, p. 21. 



Eriona, Muls., Hist. Nat. Ois. Mou., 1876, t. iii., p. 28. 



Type : O. vestita^ Longuemare. 



Bill straight, slender, longer than the head. Nostrils 

 exposed. Wings long, pointed, reaching nearly the end of tail. 

 Tail forked. Median rectrices short and wide, laterals 

 graduating in length up to the outermost ones, which are the 

 longest. Tarsi thickly clothed. Feet small. 



Habitat. — Venezuela, Colombia, Ecuador. 



357. Eriocnemis nigrivestis, Bourc. and Muls. Ann. Soc. 



Agr. Lyon, 1852, p. 144. 



Eriocnemis nigriventris, Reich., Aufz. der Colib, 1853, 

 p. 9. 



Black-breasted Puff-lecrg, Gould, Mon. Troch., vol. iv., 

 p. 276. 



I' Eriocnemis à robe noire, Mul., Hist' Nat. Ois. Mou., 1876, 

 t. iii., p. 39. 



Habitat. — Ecuador. 



Male. — Head black with bronze tinge. Upperside black 

 with greenish reflections in certain lights, passing to dark 

 green on rump. Uppertail-coverts dark indigo-blue. Tail 

 bluish-black. Centre of throat metallic blue. Rest of 

 underside black with a greenish tinge, more especially 

 so, on abdomen, and flanks. Undertail-coverts shining indigo- 

 blue. Tarsal tufts white. Wings purplish-black. Bill and 

 feet black. 



Total length, 3.iin. Wing, 2|. Tail, if. Culmen, f. 



Female. — Upperside bronzy-green, becoming pure green on 

 rump, and brilliant green on the uppertail-coverts. Throat 

 blue. Breast golden-bronze. Rest of underside shining 

 green. Undertail-coverts violet-blue. 



It is a very rare species. My specimens were collected in 

 Ecuador, by Buckley. 



