BIRDS OF NORTH AND MIDDLE AMERICA. 441 
[Ariana] sophiae Mutsant, Ann. Soc. Linn. Lyon, n. s., xxii, 1876, 207. 
Amazilia sophie Extiot, Classif. and Synop. Troch., 1879, 224.—ZELEp6n, Cat. 
Aves de Costa Rica, 1882, 21; Anal. Mus. Nac. Costa Rica, i, 1887, 122 (San 
José, Costa Rica).—Satvin, Cat. Birds Brit. Mus., xvi, 1892, 224 (Bebedero 
and Tucurriqui, Costa Rica) —Satvin and Gopman, Biol. Centr.-Am., Aves, 
ji, 1892, 303 (Nicaragua; Las Cruces de Candeldria, etc., Costa Rica).— 
UNDERWOOD, Ibis, 1896, 442 (Bebedero and Volc4n de Miravalles, Costa 
Rica). 
A[mazilia] sophiz Ripaway, Rep. U. 8. Nat. Mus. for 1890 (1891), 363 (diagnosis, 
etc.). 
Amizilis sophiae OBERHOLSER, Proc. Ac. Nat. Sci. Phila., June 2, 1899, 208. 
(?) Trochilus ( ?) caligatus GouLD, Proc. Zool. Soc. Lond., 1848, 14 (Co- 
lombia). 
(?) [Saucerottia} caligatus Bonaparte, Consp. Av., i, 1850, 77. 
(?) [Chlorestes] 7. Saucerottia caligata RetcHenBacH, Aufz. der Colibr., 1854, 8. , 
(?) [Chlorestes] caligata REIcHENBACH, Troch. Enum., 1855, 4. 
(?) Efemithylaca] caligata CaBanis and Herne, Mus. Hein., iii, 1860, 39 (Mérida, 
Venezuela). 
HA[emithylaca] hoffmannii Capanis and Herne, Mus. Hein., iii, March, 1860, 38 
(Costa Rica; coll. Heine Mus.).—Casanis, Journ. fir Orn., 1862, 163 (San 
José, Costa Rica). 
Saucerottia hoffmanni Boucarp, Gen. Hum. Birds, 1894, 188 (San José). 
SAUCEROTTIA ALFAROANA (Underwood.) 
ALFARO’S HUMMING BIRD. 
“Similar to A. sophix, but larger, and the bill rather longer and 
more curved. On the underside there is little difference, but the 
under tail-coverts are dark steel-blue, with a narrow white margin. 
On the upper surface the green of the plumage has a distinct blue 
tint, which becomes more intense on the crown and forehead. The 
upper tail-coverts are as in A. sophiw. The mandible is pale for 
about its basal half, the rest and the maxilla black. Total length 
about 4.0 inches [102 mm.]; wing, 2.2 [55.9]; tail—outer rectrices 
1.35 [34.3], middle rectrices 0.25 [6.3] shorter; bill, 1.0 [25.4].’’2 
Northwestern Costa Rica (Volcén de Miravalles). 
Amazilia alfaroana UNDERWOOD, Ibis, 4th ser., ii, Oct., 1896, 441 (Volcdn de 
Miravalles, Costa Rica; coll. ?). 
Amizilis alfaroana OBERHOLSER, Proc. Ac. Nat. Sci. Phila., 1899, 208. 
S[aucerottea] alfaroana Hartert, Das Tierreich, Troch., 1900, 53 (monoger.). 
[Saucerottea] alfaroana SHarrz, Hand-list, ii, 1900, 107. 
Saucerottia cyanifrons alfaroana CarrikER, Ann. Carnegie Mus., vi, 1910, 527 
(crit.). 
SAUCEROTTIA NIVEOVENTER (Gould). 
SNOWY-BREASTED HUMMING BIRD. 
Similar to S. edwardi, but tail purplish black or violaceous-black 
(instead of bronze), and under tail-coverts grayish (instead of rufes- 
cent) centrally. 
Adult male.—Pileum, hindneck, and upper back metallic green 
(nearly grass green); lower back, scapulars, and wing-coverts metallic 
@ Original description: Ibis, 1896, 441. 
