BIKDS OF NORTH AND MIDDLE AMEEICA. 405 



with metallic green; bill, etc., as in adult male; length (skins), 74-81 

 (76.6); wing, 41-46 (44.6); tail, 22.5-25.5 (23.1); culmen, 13.5-15.5 

 (14.6).« 



Immaturei?) male. — Similar to the adult male, but coloration 

 slightly duller (especially on under parts of body), and four lateral 

 rectrices (on each side) tipped with black or grayish black. ^ 



Costa Rica (Barranca; Naranjo de Cartago; Tucurriqui; Bonilla; 

 Carrillo; Cariblanco de Sarapiqui). 



Eupherusa cupreiceps Lawrence, Ann. Lye. Nat. Hist. N. Y., viii, 1867, 348 (Bar- 

 ranca, Costa Rica; coll. U. S. Nat. Mus.); ix, 1808, 127 (Barranca).— Frant- 

 zius, Journ. fiir Orn., 1869, 317 (Costa Rica). — Boucard, Notes quelques 

 Troch., 1873, 13 (Costa Rica). 



Elvira cupreiceps Mulsant and Verreaux, Hist. Nat. Ois.-Mouch., i, livr. 4, 

 1874, 268; iv, livr. 3, 1878, 179.— Elliot, Classif. and Synop. Troch., 1879, 

 210. — Gould, Suppl. Troch., 1880, pi. 53. — Zeledon, Cat. Aves de Costa 

 Rica, 1882, 21; Anal. Mus. Nac. Costa Rica, 1887, 122 (Naranjo de Cartago, 

 Costa Rica). — Salvin, Cat. Birds Brit. Mus., xvi, 1892, 75 (Tucurriqui, Costa 

 Rica). — Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1892, 273. — Carri- 

 ker, Ann. Carnegie Mus., vi, 1910, 535 (Caribbean slope, Costa Rica). 



E[lvira] cupreiceps Hartert, Das Tierreich, Troch., 1900, 91 (monogr.). 



[Elvira] cupreiceps Simon, Cat. Troch., 1897, 21.— Sharpe, Hand-list, ii, 1900, 116. 



[Polytmus] cupreiceps Gray, Hand-list, i, 1869, 128, no. 1625. 



[Thaiiviatias] cupreiceps Sclater and Salvin, Nom. Av. Neotr., 1873, 92. 



Thaumatias cupreiceps Boucard, Proc. Zool. Soc. Lond., 1878, 71 (Naranjo de 

 Cartago, Costa Rica). 



Lawrencius cupreiceps Boucard, Gen. Hum. Birds, Sept., 1894, 173. 



[Elvira] caeruleiceps (error) Mulsant, Ann. Soc. Linn. Lyon, xxii, 1876, 328. 



Genus AMIZILIS Gray. 



Amizilis Gray, List Gen. Birds, 1840, 14. (Type, ".4. latirostris, (Sw.) n. Ois. M., 



pi. 12. Or. amizili Less." =Orthorhynchus amazilia Lesson; see Oberholser, 



Proc. Ac. Nat. Sci. Phila., 1899, 206, 207.) 

 Amizillis Bangs, Proc. New Engl. Zool. Club, ii, Sept. 20, 1900, 20. 

 Amazilia Lesson, L'Echo du Monde Sav., ser. 2, viii, no. 32, Oct. 22, 1843, col. 



757. (Type ?c.) 

 Amazilius (emendation) Bonaparte, Consp. Av., i, 1850, 77. (Type, Ortho- 



rhynchus amazilia Lesson.) 

 Amazilis (ex Lesson, 1832) Gray, List Gen. Birds, 1855, 23. (Type, Ornismya 



amazili Lesson.) 

 Amazillia (emendation) Sclater and Salvin, Ibis, 1859, 130. 

 Amazilicus (emendation) Bonaparte, Compt. Rend., 1850, 382. 

 Amazilina Eudes-Deslongchamps, Ann. Mus. Hist. Nat. Caen, i, 1880, 391, 405. 



(Type, Trochilus fuscicaudatus Eraser.) 



« Ten specimens. 



b Three specimens (two of them from Cariblanco de Sarapiqui. the other from an 

 unknown locality in Costa Rica) agree in the above characters. It is possible that 

 they may indicate intergradation or hybridism with E. chionura. 



cThe species mentioned are: "Ornismia" lumachella Lesson, 0. eximia Delattre, 

 0. cinnamomea Lesson{= Amizilis rutila), O.rufula Delattre, and O.clarissse Longue- 

 mare, only one of which, 0. cinnamomea, is a member of this genus ! 



