164 Genera of Humming Birds. 



Leucolia qitadricolor , Muls., Hist. Nat. Ois. Mou., 1874, 

 t. i., p. 215. 



L'ranomitra ellioti, Berl., P. U.S., Nat. Mus., vol. xi., p. 562. 



Red-billed Azure Crown, Gould, Mon. Troch., vol. v., p. 284. 



La Leucolic quadricolorc, Muls., Hist. Nat. Ois., Mou., 1874, 

 t. i,, p, 216, 



Habitat. — Mexico. 



Male. — Top of head metallic blue. Upperside pale bronzy- 

 brown. Tail shining bronzy-green. Underside pure white, 

 tinged on sides of neck, breast, and flanks with some few 

 bluish feathers. Wings purple-brown. Bill coral red, with 

 black tips. 



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



236 Cyanomyia violiceps, Gould, Ann. Mag. Nat. Hist., 



1859, p. 97. 



Uranomitra violiceps, Cab. and Hein., Mus. Hein., i860, 

 t. iii., p. 41 . 



Leiicolia viridiceps, Muls., Hist. Nat. Ois. Mou., 1874, t. i., 

 p. 213. 



Violet Crown, Gould, Mon. Troch., vol. v., p. 285. 



La Leucolie a calotte violette, Muls., Hist. Nat. Ois. Mou., 

 1874, t. i., p. 214.. 



Habitat. — S. Mexico. 



Male. — Differs only from C. quadricolor by the colour of 

 its tail, which is bronzy-red, and by the feathers on sides of 

 neck, breast, and flanks, which are greenish. 



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



This species was discovered by me, in 1857, at Oaxaca, 

 South Mexico, It is rare in the collections. 



^237. Cyanomyia viridifrons, Elliot, Ann. and Mag., Nat. 

 Hist., 1871, vol. viii., p. 267. 



Green-fronted Crown, Gould, Mon. Troch., Suppl., 1886, 

 p. 72. 



La Leucolie a front vert, Muls., Hist. Nat. Ois. Mou., 1874, 

 t. i., p. 224. 



Habitat.— Pnt\^, (S. Mexico). 



