310 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



dd. Base of maxilla more extensively feathered, the distance from frontal antise 



to tip of maxilla not more than twice the distance from same point to 



base of nasal operculum (much less than twice in adult males). 



e. Distance from frontal antiae to tip of maxilla scarcely greater than from 



same point to base of nasal operculum; adult males with feathers of 



pileum developed into a conspicuous flattened pointed crest, brilliant 



golden or emerald green, sometimes passing into blue or violet posteriorly, 



the throat and chest sooty grayish, the tail uniform blackish; adult 



females with pileum dark metallic green, under parts light gray, and 



lateral rectrices tipped with gray Orthorhyncus (p. 656). . 



ee. Distance from frontal antise to tip of maxilla considerably greater than 

 from same point to base of nasal operculum; adult male with whole 

 pileum and nape brilliantly metallic red (the pileum not crested), 

 throat and che,st brilliantly metallic golden orange, the tail rufous, 

 narrowly tipped with dark bronzy brown; adult female with pileum 

 grayish brown or dull bronzy, under parts grayish white, and lateral 



rectrices tipped with white Chrysolampis ^p. 665). 



aa. Nasal operculum almost rudimentary; a white or buffy band across rump; adult 

 males with outer web of ninth primary abruptly excised or narrowed for terminal 

 third or more. {LophornUhina;.) 

 b. Tail not forked or else (Polemistrvi) forked for much less than half its length, 

 the rectrices broader, with rounded tip, their shafts not white beneath; adult 

 males with a conspicuous ornamental crest or auricular or neck tufts (some- 

 times both). 

 c. Base of maxilla more extensively feathered, the distance from frontal antiae 

 to rictus nearly equal the distance from same point to tip of maxilla; tail 

 relatively longer (mpre than two-thirds as long as wing), deeply emarginate, 

 with outermost pair of rectrices longest; throat not metallic -colored; rectrices 



without rufous Polemistria (oxtralimital).a 



cc. Base of maxilla less extensively feathered, the distance from frontal antise 

 to rictus much less than distance from same point to tip of maxilla; tail 

 relatively shorter (not more than two-thirds, usually only three-fifths, as 

 long as wing), double-rounded, with outermost pair of rectrices shorter 

 than middle pair; tail partly rufous; throat bright metallic green in adult 



males Lophornis (p. 669). 



66. Tail forked for more than half its length, the rectrices narrower with pointed 

 tip, their shafts white beneath — in adult males much longer than wing, very 

 deeply forked, the lateral rectrices slender and attenuate; adult males with- 

 out auricular tufts or neck tufts and without crest, or else the latter very 

 long and slender Popelairia (p. 676). 



Genus EUTOXERES Reichenbach. 



Eutoxeres Reichenbach, Av. Syst. Nat., 1849, pi. 40. (Type, Trochilus aquila 



Bom'cier.) 

 Myiaetina Bonaparte, Rev. et Mag. de Zool., vi, pt. 2, 1854, 249. (Type, Tro- 



chilus aquila Bourcier.) 



Rather laro;o Trochilicla? (length about 110-130 mm.) with the bill 

 very abruptly and excessively deciirved (the culmen forming approxi- 

 mately one-third of a circle) and plumage of under parts conspicu- 

 ously streaked. 



a Polemistria Cabanis and Heine, Mus. Hein., iii, 1860, 63 (type, Trochilus verreauxi 

 Bourcier). — Aurinia Mulsant, Cat. Ois.-Mouch., 1875, 27 (type, Trochilus verreauxi 

 Bourcier). 



