BIRDS OF NORTH AND MIDDLE AMERICA. 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).¢ 
Immature(?) 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 Sarapiquf). 
Eupherusa cupreiceps Lawrence, Ann. Lyc. Nat. Hist. N. Y., viii, 1867, 348 (Bar- 
ranca, Costa Rica; coll. U. 8. Nat. Mus.); ix, 1868, 127 (Barranca).—FRant- 
zius, Journ. fiir Orn., 1869, 317 (Costa Rica).—Bovucarp, Notes quelques 
Troch., 1873, 13 (Costa Rica). 
Elvira cupreiceps Mutsant and VeRREAUX, Hist. Nat. Ois.-Mouch., i, livr. 4, 
1874, 268; iv, livr. 3, 1878, 179.—Ezuiot, Classif. and Synop. Troch., 1879, 
210.—GovuLp, Suppl. Troch., 1880, pl. 53.—ZEtepdn, Cat. Aves de Costa 
Rica, 1882, 21; Anal. Mus. Nac. Costa Rica, 1887, 122 (Naranjo de Cartago, 
Costa Rica).—Satvin, Cat. Birds Brit. Mus., xvi, 1892, 75 (Tucurriqui, Costa 
Rica).—Satvin and Gopman, Biol. Centr.-Am., Aves, ii, 1892, 273.—CarrI- 
xEr, Ann. Carnegie Mus., vi, 1910, 535 (Caribbean slope, Costa Rica). 
Elivira] cupreiceps Harntert, Das Tierreich, Troch., 1900, 91 (monogr.). 
[Elvira] cupreiceps Stuon, Cat. Troch., 1897, 21.—Suarre, Hand-list, ii, 1900, 116. 
[Polytmus] cupretceps Gray, Hand-list, i, 1869, 128, no. 1625. 
[Thaumatias] cupreiceps ScLaTER and Satvin, Nom. Av. Neotr., 1873, 92. 
Thaumatias cupreiceps BoucarD, Proc. Zool. Soc. Lond., 1878, 71 (Naranjo de 
Cartago, Costa Rica). 
Lawrencius cupreiceps Boucarp, Gen. Hum. Birds, Sept., 1894, 173. 
[Elvira] caeruleiceps (error) Mutsant, Ann. Soc. Linn. Lyon, xxii, 1876, 328. 
Genus AMIZILIS Gray. 
Amizilis Gray, List Gen. Birds, 1840, 14. (Type, ‘‘A. latirostris, (Sw.) n. Ois. M., 
pl. 12. Or. amizilt Less.’’=Orthorhynchus amazilia Lesson; see Oberholser, 
Proc. Ac. Nat. Sci. Phila., 1899, 206, 207.) 
Amizillis Banas, Proc. New Engl. Zool. Club, ii, Sept. 20, 1900, 20. 
Amazilia Lesson, L’Echo du Monde Sav., sér. 2, viii, no. 32, Oct. 22, 1843, col. 
757. (Type ?¢.) 
Amazilius (emendation) Bonaparts, 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) SciatreR and Satvin, Ibis, 1859, 130. 
Amazilicus (emendation) Bonaparte, Compt. Rend., 1850, 382. 
Amazilina Evprs-DresLonecuamps, Ann. Mus. Hist. Nat. Caen, i, 1880, 391, 405. 
(Type, Trochilus fuscicaudatus Fraser.) 
@ Ten specimens. 
b Three specimens (two of them from Cariblanco de Sarapiquf, 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 EZ. chionura. 
¢The species mentioned are: ‘“‘Ornismia” lumachella Lesson, O. eximia Delattre, 
O. cinnamomea Lesson(=Amizilis rutila), O. rufula Delattre, and O. clarisse Longue- 
mare, only one of which, O. cinnamomea, is a member of this genus! 
