222 Genera of Humming Birds. 



315. Oreopvra cinereicauda, Lawr., Ann. N.Y. Lye. Nat. 

 Hist., vol. viii., p. 485. 



Grey-tailed HiDiiiuiiig-bird, Gould, Mon. Troch. Suppl., 

 1886, p. 10. 



I'Oreopyre a queue cendree, Muls. Hist. Nat. Ois. Mou., 

 187S, t. iv., p. 165. 



Habitat. — Costa Rica. 



Male. — Very much like the preceding species, from which 

 it differs only by the tail, which is longer and ashy-white with 

 dark tips. 



This extremely rare species was discovered by Mr. Garcia, 

 near Cartago, Costa Rica. I have only one specimen which I 

 killed at Navarro, Costa Rica, in May, 1877. 



Female. — Unknown, although it has been described as 

 O. castaneiventris, by Lawrence ; but 1 am in doubt about it 

 as for the female of O. leucaspis. 



316. Oreopvra hemileuca, Salv., P.Z.S., 1864, p. 5S4. 

 Orcopyra hemileuca , Boucard, P.Z.S., 1878, p. 6g. 

 Coeligena hemileuca, Elliot, Syn. H. Birds, 1879, p. 31. 

 White-bellied Cacique, Gould, Mon. Troch., Suppl., 1886, 



I'Oreopyre d gorge d'un lilas violace, Muls., Hist. Nat. Ois. 

 Mou., 1878, t. iv., p. 167. 



Habitat. — Costa Rica. 



Male. — Top of head brilliant metallic green. Neck dark 

 green, black in certain lights. Back dark shining green 

 passing to golden on rump and uppertail-coverts. Median 

 rectrices bronze-green. Laterals bronze-green, darker near the 

 tips which are whitish-gray. Chin and sides of throat 

 metallic green. Throat metallic amethyst. Breast and 

 abdomen pure white. Sides of breast and flanks golden- 

 green. Undertail-coverts pale greenish-brown in centre,, 

 edged with white. Wings purplish-brown. Bill black. 



Total length, 4|^in. Wings, 2|. Tail, if. Culmen, |-. 



Female. — Same as the male, excepting the throat which is- 

 white, spotted with green. 



This beautiful and exceedingly rare species was discovered 

 by Arce, at Turrialba, Costa Rica. 



