BIRDS OF NORTH AND MIDDLE AMERICA. 443 
[Hemithylaca] niveiventris Heinz and ReicHENow, Nom. Mus. Hein. Orn., 1890, 
179 (Verdgua). 
Saucerottia niveiventris ScLaTER and Satvin, Proc. Zool. Soc. Lond., 1864, 365 
(Lion Hill, Panam4).—Eupes-Drestonecuampes, Ann. Mus. Caen, i, 1880, 429. 
[Saucerottia] niveiventris SctatER and Satvin, Nom. Av. Neotr., 1873, 92. 
S[aucerottea] niveoventer HartERT, Das Tierreich, Troch., 1900, 54. 
[Saucerottea] niveiventris Sruon, Cat. Troch., 1897, 13.—SHarpr, Hand-list, ii, 
1900, 107. 
Saucerottea niveoventer BANGS, Proc. New Engl. Zool. Club, iii, 1902, 29 (Boquete, 
Panama, 4,000 ft.); Auk, xxiv, 1907, 295 (Boruca, s. w. Costa Rica). 
Saucerottia niveoventer CARRIKER, Ann. Carnegie Mus., vi, 1910, 528 (Boruca 
and Buenos Aires de Térraba, Costa Rica; habits). 
Ariana niveiventris MULSANT and VERREAUX, Classif. Troch., 1866, 36. 
[Polytmus] niveiventris Gray, Hand-list, i, 1869, 133, no. 1698. 
Leucodora niveiventris MULSANT and VERREAUX, Hist. Nat. Ois.-Mouch., i, livr. 
4, 1874, 313; iv, livr. 8, 1878, 184. 
[Leucodora] niveiventris Mutsant, Ann. Soc. Linn. Lyon, n. 8., xxii, 1876, 206. 
Amazilia niveiventris Extior, Classif. and Synop. Troch., 1879, 222.—ZE.epon, 
Cat. Aves de Costa Rica, 1882, 21.—Satvin, Cat. Birds Brit. Mus., xvi, 
1892, 221.—Satvin and Gopman, Biol. Centr.-Am., Aves, ii, 1892, 302.— 
Boucarp, The Hum. Bird, ii, 1892, 81; Gen. Hum. Birds, 1895, 202. 
A[mazilia] niveoventer Ringway, Rep. U. 8. Nat. Mus. for 1890 (1891), 363 
(diagnosis, etc.). 
SAUCEROTTIA EDWARDI (Delattre and Bourcier). 
WILSON’S HUMMING BIRD. 
Similar to S. niveoventer but tail metallic bronze instead of violet- 
blackish, and under tail-coverts rufescent, instead of grayish, 
centrally. 
Adult male.—Pileum, hindneck, and upper back metallic green 
(nearly grass-green); lower back and scapulars metallic bronze or 
coppery bronze, the wing-coverts usually more decidedly coppery; 
rump and upper tail-coverts much duller bronze; tail wholly metallic 
bronze or coppery bronze; remiges dark brownish slate or dusky, 
faintly glossed with purplish; malar, suborbital, and auricular 
regions, chin, throat, sides of neck, breast, and sides bright metallic 
green (yellowish emerald green), the feathers of chin and throat 
grayish white, those of other parts light brownish gray beneath 
surface; abdomen, anal region, femoral tufts and lumbar tufts 
white; under tail-coverts light grayish chestnut margined with paler; 
maxilla dull black; mandible pale brownish or whitish (reddish in 
life), dusky terminally; iris dark brown; feet dusky; length (skins), 
