1 82 Genera of Humming Birds. 



have specimens from Trinidad and Venezuela with the golden 

 colour of back. I have also one male specimen from 

 Venezuela with the whole of the underside, excepting the chin 

 of the most brilliant golden-green. 



259. Chlorestes caerulea, Vieil!., Nouv. Diet. Hist. Nat. 



1817, p. 361. 



Ornismya audeberti, Less., Ois. Mou., 1839, p.p. 30-164. 



Trochilus audeberti, Wied. Betr., t. iv., p. 67. 



Hylocharis caerulea, Gray, Gen. Birds, vol. i., p. 114. 



Thaumatias caeruleus, Bon., Consp. Gen. Av., 1850, vol. i., 



P . 78. 



Encephala caerulea, Gould, Mon. Troch., vol. v., p. 335. 



Blue-chinned Sapphire, Gould, Mon. Troch., vol. v., p. 335. 



l' Encéphale à gorge bleue, Muls., Hist. Nat. Ois. Mou., 

 1875, t. ii., p. 32. 



Habitat. — Trinidad, Venezuela, Guiana, Brazil, and Peru. 



Male. — Upperside dark grass-green in some specimens, in 

 others golden-green. Tail steel-blue. Chin shining blue. 

 Rest of underside luminous yellowish-green in some specimens, 

 in others metallic emerald-green. Undertail-coverts shining 

 green. Anal region white. Maxilla black. Mandible flesh 

 colour with black tip. Wings purple. 



Total length, 3-g-in. Wing, 2. Tail, if. Culmen, f. 



Female. — Upperside like that of male. Underside grayish 

 white more or less tipped with green on sides of neck, breast, 

 abdomen, and flanks. 



It is very abundant in Trinidad and Guiana, and it varies 

 very much in the colouring of its plumage. 



*26o Chlorestes chlorocephala, Bourcier, Rev. and Mag. 



Zool., 1854, p. 457. 



Agyrtria chlorocephala, Reich., Troch. Enum., 1855, p. 7. 



Leupidopygia chlorocephala, Cab. and Hein., Mus. Hein., 

 i860, t. iii., p. 40. 



Hylocharis chlorocephalus, Bon., Rev. and Mag. Zool., 

 1854, p. 255. 



Green-headed Sapphire, Gould, Mon. Troch., vol. v., p. 332. 



