582 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
Mellisuga albo-coronata Lawrence, Ann. Lyc. Nat. Hist. N. Y., vi, 1855, 187, 
pl. 4 (Belén, Verdégua, Panamé; coll. G. N. Lawrence).—Satvin, Proc. 
Zool. Soc. Lond., 1870, 207 (Cordillera del Chucu, Panamé). 
Microchera albocoronata. Gounp, Mon. Troch., ii, pt. xvi, 1858, pl. 116; Introd. 
Troch., oct. ed., 1861, 82.—Lawrence, Ann. Lyc. N. Y., ix, 1868, 122 
(“Costa Rica”).—Satvin, Proc. Zool. Soc. Lond., 1867, 154 (Santiago, 
Ver4gua; crit.); 1870, 207 (Cordillera del Chucu, Verégua); Cat. Birds Brit. 
Mus., xvi, 1892, 66.—FRantzius, Journ. fiir Orn., 1869, 315 (‘‘Costa Rica”).— 
Mutsant and VERREAUX, Hist. Nat. Ois.-Mouch., ii, livr. 4, 1876, pl. 32; 
iii, livr. 2, 1876, 134, pl. 81.—Exxior, Classif. and Synop. Troch., 1879, 104.— 
ZELEDON, Cat. Aves de Costa Rica, 1882, 20; Anal. Mus. Nac. Costa Rica, 
i, 1887, 121—Rmeway, Rep. U. 8. Nat. Mus., for 1890 (1891), pl. 34, fig. 
2.—SaLvin and Gopman, Biol. Centr.-Am., Aves, ii, 1892, 268.—Boucarp, 
The Hum. Bird, ii, 1892, 74 (Ver4gua); Gen. Hum. Birds, 1892, 51. 
[Microchera] albo-coronata ScutateR and Satvin, Nom. Av. Neotr., 1873, 83. 
[Microchera] albocoronata Mutsant, Ann. Soc. Linn. Lyon, n. s., xxii, 1876, 220. 
M{icrochera] albocoronata Hartert, Das Tierreich, Troch., 1900, 215 (monogr.). 
[Microchera] albicoronata Suarre, Hand-list, ii, 1900, 143. 
Chrysolampis albocoronata Muusant and VERREAUX, Classif. Troch., 1865, 57. 
[Topaza] albocoronata Gray, Hand-list, i, 1869, 134, no. 1724. 
MICROCHERA PARVIROSTRIS (Lawrence). 
COSTA RICAN SNOW-CAP. 
Similar to IM. albocoronata, but white at base of lateral rectrices 
more restricted and less sharply defined, the adult male with the 
general color brighter coppery purple. 
Adult male.—Forehead and crown wholly pure silky white; rest 
of upper parts (except tail, remiges, and primary coverts) metallic 
coppery purple;? middle rectrices bronze or coppery bronze, the 
other rectrices with basal half or more pale gray or grayish white 
(shafts pure white), the terminal portion blackish, more or less 
glossed with bronzy, and (except in worn plumage) with a narrow 
terminal margin of white; chin and throat dull dusky greenish 
bronze; under tail-coverts white; rest of under parts rich dark 
coppery purple; remiges purplish dusky, the primary coverts similar 
but darker; bill black; iris dark brown; feet dusky; length (skins), 
62-70 (66); wing, 41-43 (42); tail, 19-21 (20.1); exposed culmen, 
11-12 (11.6).? 
Adult female—Above, including forehead and crown, metallic 
bronzy green; tail and remiges as in the adult male but lateral 
rectrices broadly tipped with white; lores and auricular region 
grayish; under parts grayish white, tinged with pale brownish gray 
laterally; bill, etc., as in adult male; length (skins), 61-70 (65); 
wing, 39-42 (40.3); tail, 17.5-20.5 (19.3); exposed culmen, 11-13 
(12.1).® 
@ Nearest pansy purple. 6 Ten specimens. 
