250 Genera of Humming Birds. 



352. Threptria AURELIAE, Bourc. and Muls., Ann., Soc, 



Agr., Lyon, 1846, p. 315. 



Hylocharis aureliae, Gray, Gen. Birds, vol. i., p. 114. 



Eriopus aureliae, Bon., Consp.,Gen. Av., 1850, vol. i , p. 80. 



Eriocnemis aureliae^ Reich., Aufz. der Col., 1853, p.g. 



Aurelia's Puff-leg, Gould, Mon. Troch., vol. iv., p. 283. 



I' Eriocnemis d' Aurelie, Muls. Hist., Nat. Ois. Mou., 1876, 

 t. iii., p. 52. 



Habitat. — Columbia. 



Male. — Forehead and back shining green. Head, lower 

 part of back, and uppertail-coverts coppery-bronze. Tail 

 bluish-black, underside metallic bronzy-green. Feathers 

 on the vent fringed with white or pale gray. Tarsal tufts 

 intermixed with pale chestnut and white. Undertail-coverts 

 grass-green. Wings purplish-brown. Bill black. 



Total length, 3fin. Wing, 2f. Tail, i|. Culmen, |. 



Female. — Exactly like the male with more white on vent, 

 and the undertail-coverts margined with buff. This species is 

 very abundant in Columbia. 



It was dedicated by Messrs. Mulsant and Bourcier, to Miss 

 Aurelic Favre, who married Mr. Jacques Louis Henon, a cele- 

 brated Naturalist of Lyon. 



353. Threptria russata, Gould, P.Z.S., 1871, p. 505. 

 Buff Puff-leg. 



V Eriocnhnis a t arses roux. 



Habitat. — Ecuador. 



This species is closely allied to T. aureliae, but larger. 

 My specimen from Ecuador is more bronzy on back, less 

 shiny on underside with tarsal tufts paler chestnut, and under- 

 tail coverts bronze-green. 



It may be a female or a male not quite adult. 



Total length, 4|in. Wing, 2\. Tail, 2. Culmen, |. 



354. Threptria a.ssimilis, Elliot, Bull, Soc. Zool. France, 



1876, p. 227. 



Brown-booted Puff-leg, 1886, p. 70. 

 I' Eriocnemis de Bolivie. 



