AMAZILIA. 317 



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

 western Ecuador. 



438. A. fuscicaudata (FRASER). Bieffer's Hummingbird. 

 c 1 . 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- 

 buif, 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. Hab. Eastern Mexico, north to lower 

 Bio Grande Valley in Texas. 



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

 d 1 . 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. Hab. 



Yucatan. 



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



6 2 . Secondaries rufous or chestnut at base. 



c l . 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. Hab. Southern Mexico, north 



to Jalapa. 



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



d*. 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-.7S. Hab. Guatemala. 



A. marise (Bouuc.)- Maria's Hummingbird.* 

 c 2 . Tail neither chestnut nor purple-bronze. 

 d 1 . Tail greenish bronze. Hab. Mexico. 



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



1 Trochilus yucatanensis CABOT, Proc. Nat. Hist. Soc. Boat. 1845, 74. Amazilia yucatanensis GOULD, Mon. 

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



2 Trochilus beryllium LICHT., Preis-Verz. 1830, No. 26. Amazilia beryllina GOULD, Mon. Troch. pt. xxii. 

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



3 Trochilus maria BOURC., Ann. Soc. Ag. Lyon, ix. 1846, 319. Amazilia marise ELLIOT, Class. A Synop. 

 Troch. 1879, 222. 



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



