Mr. J. Gould on new Species of Humming -Birds. 309 



apex by a broad band of steel- or bluish-black ; abdomen green ; 

 wings purplish-brown ; bill black. 



Total length 3± inches ; bill J ; wing 2| ; tail If. 



Hab. Ecuador. 



Remark. — This species is nearly allied to Schistes Geoffroyi ; but 

 it is a much finer bird, the forehead and throat being covered by a 

 mask of glittering green ; its bill is also considerably longer. 



Thaltjrania Tschudii, Gould. 



Crown of the head and all the upper surface golden-green, in- 

 clining to bronzy-green on the tail-coverts ; throat beautiful green ; 

 abdomen prussian-blue ; under tail-coverts steel-black, many of the 

 feathers slightly fringed with white ; thighs, tarsi, and anal region 

 white ; tail steel-black. 



Total length A\ inches ; bill 1 ; wing 2\\ tail 1|. 



Hab. The neighbourhood of the River Ucayali, and the countries 

 of Ecuador and Peru. 



Remark. — The two species to which this bird is most nearly allied 

 are the T. furcata and T. nigrofasciata ; but it differs from the 

 former in having a more robust body and broader tail-feathers, and 

 in having the abdomen prussian-blue instead of ultramarine-blue ; 

 and from the latter in the form of the green mark on the throat, 

 which in this bird is truncate, while in T. nigrofasciata it descends 

 nearly to a point towards the centre of the abdomen. This is the 

 species mentioned by Tschudi in his ' Fauna Peruana,' under the 

 name of Trochilus furcatus, — a fact of which I am certain, as I have 

 received a specimen from his collection direct from Neuchatel. 



Oreopyra leucaspis, Gould. 



Crown of the head exceedingly beautiful glittering grass-green ; 

 back of the neck, and all the upper surface, deep grass-green, with 

 bronzy reflexions ; throat pure white, contrasting conspicuously with 

 the glittering grass-green of the breast ; flanks and abdomen greyish- 

 green, with bronzy reflexions ; wings purplish-brown ; tail forked 

 and steel-black ; thighs thickly clothed with hoary or greyish-brown 

 feathers ; behind the eye, and extending some distance down the 

 sides of the neck, is a stripe of pure white ; bill straight, and both 

 mandibles of a uniform black. 



Total length 44 inches ; bill If ; wing 2\ ; tail If. 



Hab. The Volcano of Chiriqui in Costa Rica, where it was 

 discovered by M. Warszewicz at an elevation of from 9000 to 10,000 

 feet. 



Remark. — One solitary individual, and that badly shot about the 

 tail, is the only example I have ever seen of this remarkable and 

 beautiful bird — a bird which differs so much from every other mem- 

 ber of the Trochilidce y that I have been necessitated to make it the 

 type of a new genus. 



