324 KEPORT OF NATIONAL MUSEUM, 1890. 



Five species have been referred to this genus, but it is questionable 

 whether all of them really belong to it. They may be distinguished as 

 follows : 



a 1 . Outer tail-feathers broadly tipped, with white in both sexes. (Cceligena Less.) 

 Lower parts dull gray, glossed with green on sides ; male with the throat 

 metallic cobalt blue. Hab.: Highlands of Mexico, north to southern Arizona ; 

 Guatemala. C. clemencies Less. Blue-throated Humming Bird. (Page 324.) 



a 2 . Outer tail-feathers not tipped with white in either sex. (Delattria Bonap.) 

 I) 1 . Lower parts dull grayish, glossed with green on sides. 

 c 1 . Adult male with throat metallic reddish purple. Hab. : Highlands of Guate- 

 mala. C. henrica (Less, and Delatt.). Henri Delattre's Humming Bird* 

 c 2 . Adult male with throat metallic violet. Hab. : Sierra Madre of southern 

 Mexico. C. margaritce Salv. and Godm. Mrs. Smith's Humming Bird A 

 & 2 . Lower parts white medially, metallic green laterally. 

 c 1 . Ear-coverts dusky green; top of head moderately metallic (green); adult 

 male with throat pale emerald-green, the feathers margined with white. 

 Hab.: Highlands of Guatemala. 



C. viridipallens (Bouitc. and Muls.). Pale-green-throated Humming Bird.% 

 c 3 . Ear-coverts and top of head brilliantly metallic emerald-green ; adult male 

 with throat pale violet or amethyst. Hab.: Highland of Costa Rica. 



C. hemileuca (Salv. ). A7nethyst-throated Humming Bird.fy 



Blue-throated Humming Bird. Cceligena clemencies Less. 

 (Plate xxxvi.) 



Omismya clemencies Less., Ois. Mouch., 1829, 216, pi. 80. 



Cceligena clemencies Less., Ind. and Synop. Gen. Troch. 1832, lp. xvni. Brewst., 

 Auk, il, Jan., 1885, 85 ("Camp Lowell," Arizona); Apr. 1885, 199 (correction 

 of locality — Sta Catalina Mountains, not Camp Lowell). 

 Delattria clemencies Bonap., Consp. i, 1850, 70. — Gould, Mon. Troch. pt. ix, 1855, 

 pi. 10; vol. ii, 1861, pi. 60. 



Clemence's Humming Bird. 



Blue-throated Cazique (Gould). 



Le Cceligene de Cle'mence (Mulsant and Verreaux). 



Oiseau-Mouche de Cle'mence (Lesson). 



Chupamirto real de pecho azul celeste (D'Oca). 



Range. — Highlands of Mexico, north to southern Arizona. 



Sp. char. — Size, very large (length more than 4.50, wing 2.90 — 3.20) ; 

 lower part dull gray, glossed with green on sides ; middle tail-feathers 

 black, and outer ones broadly tipped with white in both sexes ; adult 

 male with throat shining blue. 



Adult male (No. 76829, Mexico ; Mrs. Ohauncy Eiley) : Forehead and 

 crown dull bronze-green, appearing dull olive in certain lights ; occiput, 

 hind-neck, back, scapulars, and wing-coverts much brighter green 

 (nearly a grass-greeu), lower back and rump light, rather dull, bronze- 



* Omismya henrica Less, and Delattr., Rev. Zool. 1839, 17. Cceligena henrici Cab. 

 and Hein., Mus. Hein. III. I860, 15. 



t Delattria margaritce Salv. and Godm., Ibis, Apr. 1889, 239. 



t Trochilus viridipallens Bourc. and Muls., Ann. Soc. Lyons, 1846, 321. Cceligena 

 viridipallens Muls., Hist. Nat. Ois. Mouch. i. 1877, 185. 



§ Oreopyra hemileuca Salv., P. Z. S. 1864, 584. Cceligena hemileuca Elliot, Class, 

 and Synop. Troch. 1879, 31. 



