AMAZILIA. 317 



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

 ■western Ecuador. 



438. A. fuscicaudata (Fr.vser). Rieffer's Hummingbird, 

 c'. Belly anil flanks cinnamon-rutbus, cinnamon, or ochraccous ; outer tail- 

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

 bronzy) to outer web ; upper tail-coverts chiefl}^ green or bronzy ; 

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

 broadly margined terminally with bronzy or violet-duskj-, the 

 middle feathers sometimes entirelj^ bronzy or violet-dusK'j-. 

 (P. Lower breast, bellj-, sides, and flanks pale cinnamon, or cinnamon- 

 buff", not abruptly defined against green of more anterior ]>or- 

 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 

 Rio Grande Valley in Texas. 



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

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

 rufous, abruptly contrasted with green of more anterior ])or- 

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

 Yucatan. 



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

 t'. Secondaries rufous or chestnut at base. 



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



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

 rufous; secondaries chestnut or rufous tipped with duskj- ; 

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

 1.40, exposed culmen .70-.80. Hab. Southern Mexico, north to 

 Jalapa, Chihuahua, and Sonora. 



A. beryllina (Lirnx.). Berylline Hummingbird.' 

 cP. 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 terrainallj' with bright purple or 

 bronze ; middle tail-feathers usual)}' richer bronze or purple 

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

 culmen .G5-.78. Hab. Guatemala. 



A. devillii (BouRc). Maria's Hummingbird.' 

 <?'. Tail neither chestnut nor purple-bronze, 

 rf". Tail greenish bronze. Hab. Mexico. 



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



• TrochOut yucatantntU Cabot, Proc. Nat. Hist. Soc. Bost. 18-15, 74. Amazilia yucatanenti4 Gould, Mod. 

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



» Trochilut brryllinuM LirHT., Prcis-Veri. 1830, No. 26. AmazUia htryUina GoriD, Mon. Troch. pt. ixii. 

 1861 (vol. V. 1861, pL 312). 



• Trochilui derlllii BofRC, Rev. Zool. 1848, 272. Amatilia demlUi Reich., Anfi. der Colib. 1854, 10. 



• Amatilia ocai Gould, Ann. Mag. N. II. ser. 3, iv. 1859, 96; Mon. Troch. v. 1861, pi. 289. 



