2o8 Genera of Humming Birds. 



298. Margarochrvsis aurescens, Gould, P.Z.S., 1846, 



p. 88. 



Polytmus aurescens, Gray, Gen. Birds, vol. i., p. 108. 



Lampornis aurescens, Bon. Consp. Gen. Av., 1850, vol. i., 

 p. 72. 



Caynpylopteriis aurescens, Bon. Rev. and Mag, Zool., 1854» 

 p. 250. 



Clytolaetna aurescens^ Gould, IMon. Troch., vol. iv., p. 250. 



Banded Ruby, Gould, j\Ion. Troch, vol. iv., p. 250. 



Le Clytolème à bande bleue sur le front, Muls. Hist. Nat., 

 Ois. Mou. 1876, t. ii., p. 225. 



Habitat. — Ecuador, Peru, and Bolivia. 



Male. — Forehead metallic greenish-blue, terminating in a 

 point on the crown. IJpperside dark green passing to shining 

 green on the rump and undertail-coverts. Median rectrices 

 bronze-green, laterals chestnut-red tipped and margined with 

 bronze-green. Chin black. Throat glittering green, golden 

 on the sides. Breast deep rufous. Abdomen, flanks, and 

 undertail coverts dark green, golden in some specimens. 

 Vent grayish-white. Wings purple. Bill black. 



Total length, 4iin. Wing, 2\. Tail, \\. Culmen, ^. 



Female. — Upperside dark shining green. Median rectrices 

 bronze-green, laterals chestnut tipped and margined with 

 bronze-green, outermost ones chestnut, pale at tips. Chin 

 brownish-black. Throat metallic golden-green. Breast 

 rufous. Flanks and abdomen golden-green. Vent grayish- 

 white. Wings purplish-brown. Bill black. 



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



Type of female in my collection. 



I have specimens of both sexes of this extremely rare 

 species from Pebas. They were collected by Mr. Hauxwell. 

 I have also two male specimens collected by Buckley, in 

 Ecuador and in Bolivia. 



It is a genus quite distinct from Clytolaema. 



Genus LXXXIV. Clytolaema, Gould, Int. Troch., p. 134. 

 Heliodoxa, Reich., Aufz. der Colib, 1853, P- 9- 

 Phaiolaima, Reich., Aufz. der Colib, 1853, P- 9- 



