THE HUMMING BIRDS. 863 



other groups of species* which even Mr. Elliot has allowed to stand 

 as genera come so very close to Amazilia in their structural and other 

 characters that it may prove necessary to refer them also to the last- 

 named genus. 



The twelve species of Amazilia (as recognized by Mr. Elliot) found 

 between the United States and Panama may be distinguished by the 

 following characters: 



Common Characters. — Above green, bronze-green, or bronzy ; the 

 tail rufous, chestnut, bronzy, purple, or blue-black; lower parts green 

 anteriorly or entirely light cinnamon; sexes alike. 



a 1 . Lower parts partly green. 

 b l . Belly pure white. 

 c 1 . Tail purplish black. Hab. Costa Rica to Panama. 



A. niveoventer (Gould). White-bellied Humming Bird A 

 d 1 . Tail deep bronze. Hao. Isthmus of Panama. 



A. edwardii (De Latt. and Bourc). Edward's Humming Bird.X 

 b 2 . Belly not white. 



c 1 . Tail blue-black or dark steel-blue, 

 d'. Secondaries entirely black or bine-black. Hab. Nicaragua and Costa Rica. 

 A. sophia (Bourc. and Muls.). Sophia's Humming Bird.§ 

 d 2 . Secondaries rufous-chestnut, tipped with blue-black. Hab. Guatemala and 

 Nicaragua (Pacific side). 



A.cyanura Gould. Blue-tailed Humming Bird. || 

 c 2 . Tail bronzy, purple, or chestnut. 



d l . Tail greenish bronze. Hab. Eastern Mexico. 



A. ocai Gould. D' Oca's Humming Bird.M 

 d-. Tail purple or chestnut. 

 e 1 . Secondaries partly rufous. 

 f 1 . Secondaries with more than basal half rufous; tail deep chestnut glossed 

 with purple, the middle feathers purple. Hab. Southern Mexico. 



A. beryllina (Licht.). Berylline Humming Bird.** 

 f 2 . Secondaries with not more than basal half rufous; tail rich bronze- 

 purple. Hab. Guatemala. 



A.maria (BouRC.).tt Maria's Humming Bird. 

 e 2 . Secondaries without any rufous. 

 /'. Belly and flanks dull brownish gray; lores deep rusty. Hab. South- 

 eastern Texas to Ecuador. 



A . fuscicaudata (Eras.). Rieffer's Humming Bird. (Page 366.) 



*For example: Agyrtria Reich., Uranomitra Reich., Eucephala Reich., Timolia 

 Muls., Arinia Muls., and Callipharus Elliot. 



X Trochilus ( ?) niveoventer Gould, P. Z. S., 1850, 164. Amazili a niveiveniris Elliot 



Class, and Synop. Troch., 1879, 222. 



X Trochilus edivardi De Latt. and Bourc, Rev. Zool., 1846, 308. Amazilius edwardi 

 Bonap., Consp., 1, 1850, 78. 



§ Trochilus sophice Bourc. and Muls., Ann. Soc. Lyons, IX, 1846, 318. Amazilius sophia 

 Bonap., Consp., 1, 1850, 78. 



|| Amazilia cyanura Gould, Mon. Troch., pt. XVlii, 1850, pi. 12; vol. v, pi. 315. 



U Amazilia ocai Gould, Ann. Mag. N. 76, ser. 3, IV, 1859, 96 ; Mon. Troch., v, 1861, pi. 

 289. 



** Trochilus beryllinus Licht., Preis-Verz.,1830, No. 26. Amazilia beryllina Gould, 

 Mon. Troch. pt. xxn, 1861 (vol. v, 1861, pi. 312). 



ft Trochilus maria Bourc. , Ann. Soc. Ag. Lyon, ix-, 1846, 319. Amazilia mariw Elliot., 

 Class, and Synop. Troch., 1879, 222. 



