BIRDS OF NORTH AND MIDDLE AMERICA. 441 



[Ariana] sophiae Mulsant, Ann. Soc. Linn. Lyon, n. s., xxii, 1876, 207. 



Amazilia sophias Elliot, Classif. and Synop. Troch., 1879, 224. — Zeledon, Cat. 

 Aves de Costa Rica, 1882, 21; AnaL Mus. Nac. Costa Rica, i, 1887, 122 (San 

 Jose, Costa Rica).— Salvin, Cat. Birds Brit. Mus., xvi, 1892, 224 (Bebedero 

 and Tucurriqui, Costa Rica). — Salvin and Godman, Biol. Centr.-Am., Aves, 

 ii, 1892, 303 (Nicaragua; Las Cruces de Candehiria, etc., Costa Rica). — 

 Underwood, Ibis, 1896, 442 (Bebedero and Volcdn de Miravalles, Costa 

 Rica). 



A[maztlia] sophise Ridgway, Rep. U. S. 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. 



(?) [Chlorestcs] y. Saucerottia caligata Reichenbach, Aufz. der Colibr., 1854, 8. 



(?) [Chlorestes] caligata Reichenbach, Troch. Enum., 1855, 4. 



(?) H[emithylaca] caligata Cabanis and Heine, Mus. Hein., iii, 1860, 39 (Merida, 

 Venezuela). 



II[emithylaca] hoffmannii Cabanis and Heine, Mus. Hein., iii, March, 1860, 38 

 (Costa Rica; coll. Heine Mus.). — Cabanis, Journ. fiir Orn., 18G2, 163 (San 

 Jose, Costa Rica). 



Saucerottia hoffmanni Boucard, Gen. Hum. Birds, 1894, 188 (San Jose). 



SAUCEROTTIA ALFAROANA (Underwood.) 



ALFARO'S HUMMING BIRD. 



"Similar to A. sophise., 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. sopJiise. 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]."« 



Northwestern Costa Rica (Volcan de Miravalles). 



Amazilia alfaroana Underwood, Ibis, 4th ser., ii, Oct., 1896, 441 (Volcto de 



Miravalles, Costa Rica; coll. — ■ ?). 



Amizilis alfaroana Oberholser, Proc. Ac. Nat. Sci. Phila., 1899, 208. 

 S[aucerottea] alfaroana Hartert, Das Tierreich, Troch., 1900, 53 (monogr.). 

 [Saucerottea] alfaroana Sharpe, 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 



a Original description: Ibis, 1896, 441. 



