SAYV'S FLYCATCHER. 177 
description of which agrees so well with the species we are 
now considering, that it might be equally applied to either. 
Our bird differs from the two latter by that striking character, 
the white exterior web of the outer tail-feather. From the 
crinita it may more especially be known by the spot on the 
crown, which does not exist in that species; by not having 
the tail and wing-feathers rufous in any part; and by having 
the primaries narrowed at tip, while the crinita has them 
quite large, entire, and rounded. On a particular comparison 
with the ferow, we shall perceive that the bill of that bird 
is flattened, broad, and carinate, whilst in the verézcalis it is 
almost rounded above. The general colour of the latter is, 
besides, much paler, and the tail is less deeply emarginated. 
The Arkansaw flycatcher appears to inhabit all the region 
extending west of the Missouri river. The specimen we have 
been describing is a male, killed in the beginning of July, on 
the river Platte, a few days’ march from the mountains. 
SAY’S FLYCATCHER. (Muscicapa Saya.) 
PLATE II.—Fic. 3. 
Philadelphia Museum, No. 6831. 
TYRANNULA SAY A.—SwWAInNson.* 
Muscicapa Saya, Bonap. Synop. p. 67.—Tyrannula pallida, Sw. Synop. Mex. Phil. 
Mag. No. 15.—Tyrannula Saya, Worth. Zool. ii. p. 142. 
WE now introduce into the fauna of the United States a 
species which is either a nondescript, or one that has been im- 
properly named ; and I dedicate it to my friend Thomas Say, 
a naturalist of whom America may justly be proud, and whose 
talents and knowledge are only equalled by his modesty. The 
by the fanciful name of ruby-crowned flycatcher (with this Say com- 
pared his Tyrannus verticalis before he stated it to be new), and in the 
New York Museum three specimens are exhibited with the erroneous 
title of whiskered flycatcher (Muscicapa barbata). 
* One or two specimens ,of this apparently uncommon bird were 
procured by the Overland Arctic Expedition, agreeing generally with 
the birds now described. Mr Swainson has received it from Mexico.—Ep, 
VOL, Ill. M 
