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 antize 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.......-...... Orthorhynecus (p. 656). 
ee. Distance from frontal antie 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 chest 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. (Lophornithine.) 
b. Tail not forked or else (Polemistria) 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 antize 
to rictus nearly equal the distance from same point to tip of maxilla; tail 
relatively longer (more than two-thirds as long as wing), deeply emarginate, 
with outermost pair of rectrices longest; throat not metallic-colored; rectrices 
withoutrufous.o.5 ses oi Seniesa wescdventes Polemistria (extralimital).¢ 
cc. Base of maxilla less extensively feathered, the distance from frontal antic 
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 
MAES socsccs seh e se oe eeucinssoaeceeacsnseaeee est Lophornis (p. 669). 
bb. 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 
Jong and islendet'.. 26.0202 4+2ceeusuacenssicesieseece dows Popelairia (p. 676). 
Genus EUTOXERES Reichenbach. 
Eutoxeres ReicHEnBacn, Av. Syst. Nat., 1849, pl. 40. (Type, Trochilus aquila 
Bourcier.) 
Mytactina Bonaparte, Rev. et Mag. de Zool., vi, pt. 2, 1854, 249. (Type, Tro- 
chilus aquila Bourcier.) 
Rather large Trochilide (ength about 110-130 mm.) with the bill 
very abruptly and excessively decurved (the culmen forming approxi- 
mately one-third of a circle) and plumage of under parts conspicu- 
ously streaked. 
@ Polemistria Cabanis and Heine, Mus. Hein., iii, 1860, 63 (type, Trochilus verreauat 
Bourcier).—Aurinia Mulsant, Cat. Ois.-Mouch., 1875, 27 (type, Trochilus verreauai 
Bourcier). 
