164 Genera of Humming Birds. 



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

 t. i., p. 215. 



Uranomitra ellioti, Berl., P. U.S., Nat. Mus., vol. xi., p. 562. 



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



La Leucolie quadricolore, 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, if. Culmen, |. 



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



1859, p. 97. 



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

 t. iii., p. 41. 



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

 p. 213. 



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



La Leucohe à calotte violette, Muls., Hist. Nat. Ois. Mou., 

 1874, t. i., p. 214. 



Habitat. — S. Mexico. 



Maie. — 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, 1^. Culmen, |. 



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 à front vert, Muls., Hist. Nat. Ois. Mou., 1874, 

 t. i., p. 224. 



Habitat. — Putla, (S. Mexico). 



