Genera of Humming Birds. 289 



la Xanthogenye de Salvin, d'Ham., Bull., Soc. Zool. de 

 France, 1883, t. viii. p. 77. 



Habitat. — Roraima, British Guiana. 



Male. — Forehead glittering golden-green, terminating in a 

 point on the crown. Rest of crown and nape dark bronzy- 

 green, appearing black in certain lights. Rest of upperside 

 shining green, with a bronze tinge on the back. Uppertail- 

 coverts shining green. Median rectrices brovvnish-lDronze, 

 laterals brownish-black. Chin, throat, and breast glittering 

 emerald-green, golden on chin. In the centre of the throat a 

 spot of glittering purple-blue feathers. Abdomen and flanks 

 dark bronzy-green. Spot behind the eye and vent white. 

 Undertail-coverts dark green, edged with gray. Wings 

 purple-brown. Maxilla black. Mandible flesh colour with 

 black tip. 



Total length, 4^in. Wing, 2|. Tail, i^. Culmen, |i. 



Female. — Upperside shining green, with a bronzy tinge^ 

 metallic on forehead. Median rectrices bronze-green, dark 

 on tips, laterals bluish-black, two of them and the outermost 

 ones slightly tipped with grayish-white. Underside wliite,. 

 each feather tipped with metallic-green. Centre of abdomen 

 and vent, white. Wings purple-brown, maxilla black,, 

 mandible flesh colour, with black tip. 



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



This very fine species was discovered at Roraima, British 

 Guiana, by Mr. Henry Whitely. My specimens of both sexes 

 are from him. It is a very rare species. 



^406. Xanthogenix hypgsticta, Gould, P.Z.S., 1862, 



p. 124. 



Aphantochroa hyposticta, Gould, P.Z S., 1862, p. 124. 



Spotted breasted Humming-bird, Gould, Mon. Troch., 

 Suppl., 1886, p. 7. 



la Xanthogenye t ache tee. 



Habitat. — Ecuador. 



Upperparts dark green. Wings purplish-brown. Feathers 

 of throat, breast, and abdomen white at base and tipped with 

 green. Flanks green ; undertail-coverts green, edged with 

 white. Median rectrices, green, remainder green at base, 



