ARKANSAW FLYCATCHER. 
89 
on the southwestern frontier of the United States, 
more especially frequenting- the scanty forests, which, 
with many partial, and often total interruptions, extend 
along the Arkansaw, Canadian, and Platte rivers, where 
in some districts they do not seem to be very uncommon. 
17 . MUSCICAPA VERTICALIS, BONAPARTE. 
ARKANSAW FLYCATCHER. 
BONAPARTE, PLATE II. FIG. II. 
This bird, brought from the Pocky Mountains by 
Major Long’s exploring party, is so closely allied to 
many imperfectly described species of the extensive 
genus to which it belongs, that ornithologists, at first 
sight, may very reasonably doubt its pretensions to rank 
as a new species. But, notwithstanding any doubt 
that may be produced by its similarity to others, it is 
certainly an addition to the already numerous catalogue 
of flycatchers. 
The total length of the Arkansaw flycatcher is eight 
inches. The bill is similar to that of the crested 
flycatcher, but is more rounded above, and more abruptly 
inflected at tip, being of a blackish colour, as well as 
the feet. The head above, and nucha, are pure pale 
plumbeous ; the crown has a restricted bright orange 
spot in the middle, invisible when the feathers are at 
rest ; there is a dusky spot between the bill and eyes. 
The cervix and back are pale plumbeous, tinged with 
olivaceous, and deepening on the rump almost to 
blackish, which is the colour of the superior tail-coverts. 
The chin is whitish ; the throat and upper part of the 
breast are of the same colour as the head, but paler; 
the remaining under surface, including the inferior wing 
and tail-coverts, is yellow. The wings are brown, the 
secondaries being margined exteriorly with whitish ; 
the inner webs of the primaries are whitish towards 
the base, and near the tips they are narrowed ; the first 
is remarkably so, being almost falciform. The tail is 
of a deep brown black colour, and very slightly 
