564 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



del Rio Peripa, w. Ecuador). — Oberholser, Proc. U. S. Nat. Mus., xxiv, 



1902, 339 (Santo Domingo, w. Ecuador; crit.). — Bangs, Proc. New Engl. 



Zool. Club, iii, 1902, 31 (Boquete and Volcdn de Chiriqui, 4,500-7,000 ft., 



Panama); Bull. Mus. Comp. Zool., xxxix, 1903, 144 (Ceiba and Yaruca, 



Honduras). — Carriker, Ann. Carnegie Mus., vi, 1910, 543 (lowlands of 



Costa Rica, up to 4,000 ft.). — Ferry, Pub. 146, Field Mus. N. H., orn. ser., 



i, no. 6, 1910, 263 (Guayabo, Costa Rica). 

 H[eliothrix] harroti Cabanis and Heine, Mus. Hein., iii, 1860, 28, footnote 



(Colombia; Ecuador; Veragua). — Heine, Journ. fiir Orn., 1863, 183. — 



Hartert, Das Tierreich, Troch., 1900, 187. 

 [Heliothrix] barrotii Reichenbach, Aufz. der Colibr., 1854, 13; Troch. Enum., 



1855, 11. 

 Heliothrix purpureiceps Gould, Proc. Zool. Soc. Lond., 1855, 87 (Popayan, 



Colombia; coll. J. Gould); Mon. Troch., iv, 1861, pi. 216.— Sclater, Proc. 



Zool. Soc. Lond., 1860, 296 (Esmeraldas, w. Ecuador). 

 H[eliothrix] purpureiceps Cabanis and Heine, Mus. Hein., iii, 1860, 28, footnote. 

 [Heliothrix barroti] var. purpureiceps Mulsant, Ann. Soc. Linn. Lyon, n. s., 



xxii, 1876, 214. 

 Heliothrix violifrons Gould, Introd. Troch., oct. ed., 1861, 122 ("Cartagena"= 



Veragua, Panama; coll. J. Gould; cites Mon. Troch., iv, pi. 217.) — Salvin. 



Proc. Zool. Soc. Lond., 1870, 210.— Boucard, The Hum. Bird, ii, 1892, 86 



(Veragua); Gen. Hum. Birds, 1895, 314 (Veragua; Panama). 

 [Heliothryx] violifrons Gray, Hand-list, i, 1869, 153, no. 1979. 

 [Heliothrix barroti] var. violifrons Mulsant, Ann. Soc. Linn. Lyon, n. e., xxii, 



1876, 214. 

 Heliothrix barroti alincius Oberholser, Proc. U. S. Nat. Mus., xxiv, no. 1258, 



Jan. 18, 1902, 339, in text (Choctum, Guatemala; coll. U. S. Nat. Mus.). 



Genus EUGENES Gould. 



Eugenes o Gould, Mon. Troch., pt. xii, Sept., 1856, text to pi. 59; Introd. Troch., 

 oct. ed., 1861, 57. (Type, Trochilus fulgens Swainson.) 



Large Trochilidae (length about 120-130 mm.) with bill much longer 

 than head, straight, terete; culmen rounded but basally contracted 

 into a narrow ridge; tomia smooth; mandible with a lateral median 

 groove. Nasal operculum nude, but hidden (except extreme edge) 

 by dense oppressed frontal feathers, which extend considerably 

 beyond its anterior end, forming a short angle or antia on each side 

 of culmen. Tarsus feathered m front, except for lower portion; 

 outer toe slightly shorter than middle toe, the inner still (but very 

 slightly) shorter. Wing about three times as long as exposed culmen 

 in adult males, relatively much shorter '' (sometimes only twice as 

 long) in females, the outermost primary longest. Tail a little more 

 than half (in females) to three-fifths (in adult males) as long as 

 wing, deeply emarginate in adult males, faintly emarginate or double- 

 rounded in females, the rectrices moderately broad, with rounded tip. 



Coloration. — Back, etc., metallic green or bronze-green; a small 

 white postocular spot; tail bronzy. Adult male with forehead and 



« Euyevrjc, nobilis. (Gould.) b Owing to greater length of the bill in females. 



