582 BULLETIN 50^ UNITED STATES NATIONAL MUSEUM. 



Mellisuga alho-coronnta Lawrence, Ann. Lye. Nat. Hist. N. Y., vi, 1855, 137, 

 pL 4 (Bel^n, Venigua, Panama; coU. G. N. Lawrence). — Salvin, Proc. 

 ZooL Soc. Lond., 1870, 207 (Cordillera del Chucu, Panamd). 



Microchera albocoronata Gould, Mon. Troch., ii, pt. xvi, 1858, pi. 110; Introd. 

 Troch., oct. ed., 1861, 82.— Lawrence, Ann. Lye. N. Y., ix, 1868, 122 

 ("Costa Rica"). — Salvin, Proc. Zool. Soc. Lend., 1867, 154 (Santiago 

 Veragua; crit.); 1870, 207 (Cordillera del Chucu, Venigua); Cat. Birds Brit 

 Mus., xvi, 1892, 66.— Frantzius, Journ. fiir Orn., 1809, 315 ("Costa Rica").- 

 MuLSANT and Verreaux, Hist. Nat. Ois.-Mouch., ii, livr. 4, 1876, pi. 32 

 iii, livi". 2, 1876, 134, pi. 81.— Elliot, Classif. and Synop. Troch., 1879, 104.- 

 Zeledon, Cat. Aves de Costa Rica, 1882, 20; Anal. Mus. Nac. Costa Rica 

 i, 1887, 121.— Ridgway, Rep. U. S. Nat. Mus., for 1890 (1891), pi. 34, fig 

 2.— Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1892, 268. — Boucard 

 The Hum. Bird, ii, 1892, 74 (Verdgua); Gen. Hum. Birds, 1892, 51. 



[Microchera] alho-coronata Sclater and Salvin, Nom. Av. Neotr., 1873, 83. 



[Microchera] albocoronata Mulsant, Ann. Soc. Linn. Lyon, n. s., xxii, 1876, 220. 



Mllcrochcra] albocoronata Hartert, Das Tierreich, Troch., 1900, 215 (monogr.). 



[Microchera] albicoronata Siiarpe, Hand-list, ii, 1900, 143. 



Chrysolampis albocoronata Mulsant and Verreaux, Classif. Trooh., 1805, 57. 



[Topaza] albocoronata Gray, ITand-list, i, 1809, 134, no. 1724. 



MICROCHERA PARVIROSTRIS (Lawrence). 



COSTA mCAN SNOW-CAP. 



Similar to M. alhocoronata, but white at base of lateral rectrices 

 more restricted and less sliar])ly 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); wmg, 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 w^ith white; lores and auricular region 

 grayish; under parts grayish white, tinged with pale brownisli gray 

 laterally; bill, etc., as in adult male; length (skms), 61-70 (65); 

 wing, 39-42 (40.3); tail, 17.5-20.5 (19.3); exposed culmen, 11-13 

 (12.1).^ 



« Nearest pansy purple. ^ Ten specimens. 



