AMAZILIA. 317 



America and eastern Mexico, north to southern Texas, south to 

 western Ecuador. 



438. A. fuscicaudata (Fraser). Rieffer's Hummingbird, 

 c'. Belly and flanks cinnamon-rufous, cinnamon, or ochraceous ; outer tail- 

 feather entirely rufous, except sometimes a narrow margin (of dull 

 bronzy) to outer web ; upper tail-coverts chiefly green or bronzy ; 

 tail light chestnut, or chestnut-rufous, the feathers (except outer) 

 broadly margined terminally with bronzy or violet-dusky, the 

 middle feathers sometimes entirely bronzy or violet-dusky. 

 d 1 . Lower breast, belly, sides, and flanks pale cinnamon, or cinnamon- 

 buff, not abruptly defined against green of more anterior por- 

 tions; length about 4.00-4.50, wing 2.15-2.30, tail 1.50-1.70, 

 exposed culmen .70-.80. Sab. Eastern Mexico, north to lower 

 Eio Grande Yalley in Texas. 



439. A. cerviniventris Gould. Buff-bellied Hummingbird. 

 d 2 . Lower breast, belly, sides, and flanks deep cinnamon, or cinnamon- 

 rufous, abruptly contrasted with green of more anterior por- 

 tions; wing 2.20-2.25, tail 1.40-1.60, exposed culmen .70. Sab. 

 Yucatan. 



A. yucatanensis (Cabot). Cabot's Hummingbird. 1 

 6 2 . Secondaries rufous or chestnut at base. 



c\ Tail mainly chestnut, or rich purple-bronze. 



d 1 . Outer webs of quills (except longer ones) chiefly chestnut or 

 rufous; secondaries chestnut or rufous tipped with dusky; 

 outer tail-feathers deep chestnut ; wing 2.10-2.20, tail 1.30- 

 1.40, exposed culmen .70-.75. Sab. Southern Mexico, north 

 to Jalapa. 



A. beryllina (Licht.). Berylline Hummingbird. 2 

 d 2 . Outer webs of quills with rufous only at extreme base, and some- 

 times concealed or nearly obsolete ; secondaries dusky for at 

 least, terminal half of exposed portion ; outer tail-feathers very 

 dark chestnut, bordered terminally with bright purple or 

 bronze; middle tail-feathers usually richer bronze or purple 

 than in A. beryllina; wing 2.10-2.25, tail 1.30-1.40, exposed 

 culmen .65-.78. Sab. Guatemala. 



A. maris (Bourc.)- Maria's Hummingbird." 

 c 2 . Tail neither chestnut nor purple-bronze. 

 d 1 . Tail greenish bronze. Sab. Mexico. 



A. ocai Gould. D'Oca's Hummingbird.* 



1 Trochilua yucatanensis Cabot, Proc. Nat. Hist. Soo. Bost. 1845, 74. Amazilia yucatanensis Gould, Mon. 

 Troch. pt. xxiii. 1861 (vol. v. 1861, pi. 308). 



2 Trochilua beryllinus Licht., Preis-Verz. 1830, No. 26. Amazilia beryllina Gould, Mon. Troch. pt. xxii. 

 1861 (vol. v. 1861, pi. 312). 



s Trochilus maria Bouec, Ann. Soo. Ag. Lyon, is. 1846, 319. Amazilia maris Elliot, Class. & Synop. 

 Trooh. 1879, 222. 



* Amazilia ocai Gould, Ann. Mag. N. H. ser. 3, iy. 1859, 96; Mon. Troch. v. 1861, pi. 289. 



