640 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
more contracted, sometimes forming a rather distinct narrow ridge; 
tomia smooth; mandible with the usual longitudinal median sulcus. 
Nasal operculum rather broad and convex, more or less (sometimes 
wholly) hidden by the decumbent frontal feathering, which extends 
forward to beyond anterior end of nostril, forming a short and obtuse 
point or antia on each side of culmen. Tarsus feathered for upper 
portion except behind; inner toe about as long as middle toe, the 
outer very slightly shorter, the hallux shorter than outer toe. Wing 
more than twice as long as exposed culmen, the outermost primary 
longest, rather narrow, but not attenuated nor acuminate. Tail in 
adult male shorter than wing, forked for more than half its length, 
the lateral rectrices rather narrow but rounded at tip; in adult females 
at least half as long as wing, strongly double rounded or rounded 
with middle pair of rectrices abruptly shorter than the rest. 
Coloration —Above rather dull or dark metallic bronze or bronze- 
green, including middle rectrices; under parts of body more or less 
rufescent, sometimes glossed with green or bronze laterally, the chest 
whitish or buffy. Adult male with chin and throat bright metallic 
reddish purple sometimes passing into violet or blue posteriorly, the 
lateral rectrices purplish black broadly edged on inner web with 
cinnamon-rufous; adult females with chin and throat dull white or 
cinnamon-buffy, lateral rectrices rufescent with a subterminal band 
of black. 
Range.—Bahama Islands ; Costa Rica and western Panamé. (Three 
species.) 
While acknowledging the very close relationship of this group to 
Calliphlox Boie, I believe it is better to keep it apart, the type of 
Calliphlow having the lateral rectrices contracted and obtusely pointed 
terminally, the middle rectrices much broader, and the primaries 
very much narrower, the outer one very narrow terminally. The 
coloration is very similar, but in Calliphloz there is no rufous on-the 
tail, which (except the middle rectrices) is uniform purplish black. 
N. bryantz is intermediate in coloration between the typical species 
of the present genus and Calliphloz, the female agreeing with that of 
the latter in the conspicuous dusky auricular area, while both sexes 
agree with the species of Nesophloz in coloration of the tail. It is 
also, to a certain extent, intermediate in form, but seems nearer the 
present group. 
KEY TO THE SPECIES OF NESOPHLOX. 
a. Throat bright metallic reddish purple; tail deeply forked, the longer rectrices 
edged on inner web with cinnamon-rufous but not tipped with that color. (Adult 
males.) 
b. Bill slightly decurved from middle portion; under parts of body more rufescent; 
purple of throat passing into violet on posterior border; a conspicuous lumbar 
tuft of white. 
