THE HUMMING BIRDS 319 



Jn order to render the present work more useful to those who wish 

 to kuow more about the Humming Birds of our country, the principal 

 synonymy, a description, and a brief account of the habits of each 

 species (so far as known), is given in the following pages. 



Genus EUGENES Gould. 



Eugenes Gould, Mon. Trocb. pt. xn, 1856; Introd. Trocb. Oct. ed., 1861, 57. Type, 

 Trochilus fulgens Swains. 



Generic characters. — Tail less than two-thirds as long as wing, 

 slightly forked or emarginated; bill straight, more than one-third as 

 long as the wing and about half as long as the longest tail feathers. 

 Size, large (total length, 4.50 inches or more; wing, 2.90-3.10). 



Adult males with top of head rich metallic violet or violet-blue, the 

 chin and throat brilliant emerald-green or light bluish green ; upper 

 parts dark bronzy green; lower parts (except throat and lower tail- 

 coverts) plain dusky greenish or dull bronzy; lower tail-coverts paler 

 greenish or bronzy, bordered with paler. Adult females with top of 

 head dull brownish gray or grayish brown, rest of upper parts bronzy 

 green; lower parts pale brownish gray, the sides and flanks tinged 

 with green ; a small white postocular spot. 



There are only two species known of this genus, one (E. fulgens) in- 

 habiting the highlands of Guatemala and Mexico, north to southern 

 Arizona, the other (E. spectabilis) the elevated portions of Costa Rica. 

 They may be distinguished by the following characters: 



o 1 . Adult male: Breast very dark bronzy green, appearing nearly black in some ligbts. 

 Adult female: Outer tail-feathers very broadly (for about .35-.45) tipped with 

 pale gray or dull grayish white. Exposed culmen 1.15. Young: Similar to 

 adult female, but feathers of upper parts bordered terminally with pale bufiy. 

 Hab. Highlands of Mexico and Guatemala, north to southern Arizona. 



E. fulgens (Swains). Rivoli Humming Bird. (P. 319.) 



a 2 . Adult male: Breast dull bronzy, or bronzy green, the feathers dull brownish gray 

 immediately beneath surface; lower tail-coverts green, margined with pale 

 buffy. Adult female : Outer tail-feathers more narrowly (for about .20-.25) 

 tipped with darker brownish uray ; exposed culmen 1.40—1.50. Sab. High- 

 lands of Costa Rica. E. spectabilis (Lawk). Admirable Humming Bird* 



Rivoli Humming Bird. Eugenes fulgens (Swains). 



(Plate xxxv.) 



Trochilus fulgens Swains. Phil. Mag. I, 1827, 441. 



Eugenes fulgens Gould, Mon. Troch. pt. xn, 1856, pi. 7; vol. n, 1861, pi. 59. 

 — Henshaw, Am. Nat. 1874, 241 (Camp Grant, Arizona); Zool. Wheeler's 

 Surv. 1875, 379. 

 Refulgent Humming Bird. 



L'Eugene de Rivoli (Mulsant and Verreaux). 

 Chupamirto verde montero (Puebla ; Prof. F. Ferrari-Perez). 

 Chupamirto real de pecho verde y cabeza azul (D'Oca). 



* Heliomaster spectabilis Lawr., Ann. Lye. N. Y. vm. 1867, 472. Eugenes spectabilis 

 Muls., Hist. Nat. Ois. Mouch. n., 1876, 215. 



