1 66 Genera of Humming Birds. 



Bill longer than the head, narrow and rounded at base, 

 nostrils exposed. Wings long and pointed, reaching the end 

 of till. Tail rounded, all the retrices of same length. Tarsi 

 clothed to the toes. Sexes alike, dull. 



Habitat. — Amazons, Peru, and Bolivia. 



240. Leucippus CHIONOGASTER, Tsch. Faun. Per., 1844, 



p. 247. 



Trochilus turneri, Bourc, Rev. Zool., 1846, p. 113. 

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



Thaumatias leucogaster , Bon., Consp. Gen. Av., 1850, 

 vol. i., p. 78. 



Leucippus pallidiis, Tacz., P.Z.S., 1874, p. 542. 



White-breasted Leucippus, Gould, Mon. Troch., vol. v., 

 p. 290. 



Le Leucippe a ventre blanc de neige, Muls., Hist. Nat. Ois. 

 Mou., 1874, t. i., p. 259. 



Habitat. — Peru, and Bolivia. 



Male. — Upperside pale bronzy-green. Tail feathers bronzy- 

 green, with inner webs and shafts of lateral ones white. 

 Underside pure white, sides of breast and flanks washed 

 sparingly with pale green feathers edged with white. Maxilla 

 black. Mandible flesh colour, with black tips. 



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



It is a rare species. My specimens were collected by MM. 

 Buckley and Garlepp. 



241. Leucippus chlorocercus, Gould, P.Z.S., 1866, p. 194. 

 Spotted White-throat , Gould, Mon. Troch., Suppl., 1886, 



P- 73- 



Le Leucippe a queue verte , Muls., Hist., Nat. Ois. Mou., 1874, 

 t. i., p. 258. 



Habitat. — Upper Amazons and Peru. 



This species resembles closely the preceding one. It differs 

 in having the tail shining pale greenish-bronze with a faint 

 subterminal bar of darker green, and gray tips. Bill shorter 

 than in L. chionogaster , and all black. 



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



I have only one specimen of this rare species collected by 

 Hauxwell, at Nauta, in 1883. 



