THE HUMMING BIRDS. 319 



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

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

 synonymy, a dosciiption, 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, Mou. Trocb. pt. xii, 1856; lutrod. Troch. Oct. cc;., 1861, 57. Type, 

 Troch Has 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, 2.1)0-3.10). 



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. Adiilt females with top of 

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

 green; lower i)arts 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. si)ectahiUs) the elevated portions of Costa Kica. 

 They may be distinguished by the following characters: 



a'. Adult male: Breast very dark brouzy green, appearing nearly black in some ligbts. 

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

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

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

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



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



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

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

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

 tipped with darker brownish gray; exposed culmen 1.40-1.50. Hab. High- 

 lands of Costa Rica. E. spectahilis {LiAWii). Admirable Humming Bird.* 



RivoLi Humming Bikd. Eugenes fulgens {BwAms). 



(Plate XXXV.) 



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



Eugenes fulgens Gould, Mou. Troch. pt. xii, 1856, pi. 7; vol. ii, 1861, pi. 59. 

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

 Surv. 1875, 379. 

 Refulgent Humming Bird. 



L'Eugene deRivoli (Mulsant and Verreaux). 

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

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



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

 MULS., Hist. Nat. Ois. Mouch. ii., 1876, 215. 



