Genera of Humming Birds. 175 



Le Chrysobronche à queue blanche and verte, Muls., Hist. 

 Nat. Ois. Mou., 1874, vol. i., p. 277. 



Habitat. — Trinidad, Columbia, Venezuela, Guiana and 

 Brazil. 



Male. — Upperside golden-green. Underside metallic yellow- 

 ish-green. In some specimens from Bahia, the underside is 

 of the most brilliant golden. A tuft of white feathers on each 

 side of anal region. Undertail-coverts shining green, edged 

 with white. Median rectrices shining green with the internal 

 edges whitish for about half their length, lateral ones having a 

 stripe of white on the outer web and tips white, outermost 

 ones green for about two-thirds of their length on inner web, 

 rest white. In some specimens the outer webs and tips are 

 white, the rest is shining green. Maxilla sometimes black, 

 sometimes light brown. Mandible flesh colour with black tips. 

 Wings purplish-brown. 



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



Female. — I am not certain that the . female is of the same 

 colouration as the male. I have several specimens which I 

 consider as females. Here is the description : — Upperside 

 golden-green. Throat and breast whitish, speckled with many 

 metallic golden-green feathers. Abdomen and flanks pale 

 rufous. Undertail-coverts white. Median rectrices bronze- 

 green, slightly tipped white, lateral bronze-green for about 

 two-thirds of their length, the rest white. 



251. Polytmus viridissimus, Vieill., Ois. Dor., t. i., p. 84. 



Ornisfnya viridis, Less. Troch., 183 1, p. 96. 



Trochilus theresiœ, Da Silva., Mai. Min. Bras., 1843, p. 2. 



Amazilia viridissima, Bon., Consp. Gen. Av., 1850, vol. i., 

 P- 77- 



Smaragditisviridissima, Reich., Aufz. der Col., 1853, P- 7- 



Chrysobronchus viridissimus, Bon., Rev. and Mag. Z00L, 

 1854, p. 252. 



Chlorestes viridissimus, Reich., Troch. Enum., 1855, p. 4. 



Thaumatias chrysurus, Burm., Th. Bras., 1856, t. ii., p. 345. 



Green-tailed Humming-bird, Gould, Mon. Troch., vol. iv., 

 p. 231. 



Le Chrysobronche tout vert, Muls., Hist. Nat. Ois. Mou., 

 1874, t. i., p. 280. 



