35^ Genera of Humming Birds. 



My specimens were collected in Ecuador, and Upper 

 Amazons, by Buckley. 



481. Campylopterus hemileucurus, Licht., Preiz. Verz. 



Mex. Thier., 1833, No. 33. 



Orismya delattrei, Less., Rev. Zool., 1839, p. 14. 



Mellisuga delattrei, Gray, Gen. Birds, vol. i., p. 113. 



Campylopterus delattrei, Gould, Mon. Troch., vol. ii., p. 45. 



Delattre's Sabre-wing, Gould, Mon. Troch., vol. ii., p. 45. 



Le Campyloptere de Delattre, Muls., Hist. Nat. Ois. Mou., 

 1874, vol. i., p. 125. 



Habitat. — Mexico to Veragfua. 



Male. — Top of head and lores dull greenish-black. Upper- 

 side bright metallic purple-blue passing to dark shining green 

 on rump. Uppertail-coverts shining dark green. Median 

 rectrices dark bronzy-green, next one bluish-black, the rest 

 bluish-black for half their length, remainder pure white. 

 Underside bright metallic violet-blue. A small spot behind 

 the eye, anal region, and line on sides of fianks white. Wings 

 purplish-brown. Bill black. 



Total length, 5fin. Wing, 3^. Tail, 2\. Culmen, i\. 



Female. — Upperside shining green, dark golden-brown on 

 head. Tail like that of the male, excepting the two median 

 rectrices, which are shining bronzy-green. Centre of throat 

 metallic purple-blue. Rest of underside gray, sparingly washed 

 with green on sides of breast and flanks. 



Total length, 5|in. Wing, 2\. Tail, 2^. Culmen, lyL. 



I have some specimens from Veragua with the tips of median 

 rectrices brownish-black and the abdomen and flanks metallic 

 greenish-blue; but I do not think it is sufficient to make a 

 species with it. 



It is a common species in Mexico and Guatemala. In 

 Costa Rica and Veragua it is rarer. I have collected this 

 species in different parts of Mexico, and in the semi-tropical 

 forests of Costa Rica. 



482. Campylopterus ensipennis. Swains. Zool. Illust., vol. 



ii., pi. 107. 

 Campylopterus ensipennis, Less., Ois. Mou., 1829, p. 124. 

 Polytmus ensipennis, Gray, Gen. Birds, vol. i., p. 107. 



