68 Genera of Humming Birds. 



dark brownish bronze. Breast, buff, with a bronzy tinge. 

 Abdomen and flanks dark buffy -bronze washed with bronzy 

 feathers. Undertail coverts pale bufï. Bill black. 



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



i!^é';7Z(2/é'.— Upperside bronzy-green. Underside pale buff^ 

 washed with greenish-bronzy feathers. Outermost rectrices 

 tipped pale buff. Bill black. 



Total length, 3|-in. Wing, 2. Tail, i-|. Culmen, \. 



I have several specimens of this rare species collected in 

 Bolivia, 1876, by Buckley. 



Genus XXXV. Chalcostigma, Reich. Aufz der Col. 1853, 



p. 12. 



Lampropogon, Bon. Rev. and Mag. Zool. 1854, p. 252. 



Type : O. heteropogon, Boissoneau. 



Bill very small, straight, shorter than the head. Feathers 

 of lower part of throat lengthened, and brilliantly coloured. 

 Wings long, ample, not reaching the end of tail. Tail deeply 

 forked when opened. Rectrices broad, median smaller than 

 the rest, next one longer and gradually so, with the others, 

 outermost ones the longest. Sexes unlike. 



Habitat. — Columbia, Ecuador, Peru, and Bolivia. 



Chalcostigma heteropogon, Boiss. Rev. Zool., 1839, p. 



355- 

 Trochilus coruscids, Fras. P.Z.S., 1840, p. 15. 

 Mellisuga heteropogoji, Gray, Gen. Birds, vol. i., p. 112. 



Ra7npho7nicron heteropogon, Bon., Consp. Gen. Av., 1850, 

 vol. i., p. 79. 



Lampropogon heteropogon^ Bon. Rev. and Mag. Zool., 1854, 

 p. 252. 



Columbian Thorn-bill, Gould, Mon. Troch., vol. iii., p. 184. 



Le Ramphomicron à quene bronzée, Muls. Hist. Nat. Ois. 

 Mou., 1876, t. iii., p. 168. 



Habitat. — Columbia. 



Male. — Head shining green. Upperside greenish-bronze. 

 Uppertail coverts reddish bronze. Tail shining bronze. Throat 



