ARKANSAW FLYCATCHER. 
425 
In the female mentioned above as having been found in Texas, the 
mouth is half an inch wide, its roof anteriorly 
slightly concave, with three median prominent lines, 
the palate flat, with its membrane or skin diapha- 
nous, as in Goatsuckers. The tongue is 7 twelfths 
long, deeply emarginate and papillate at the base ; 
triangular, extremely depressed, tapering to a thin 
slit and bristly point. The posterior aperture of 
the nares is 4 twelfths long, linear, papillate on the 
edges, ending abruptly at its fore part, without a 
prolonged fissure. QEsophagus, a, a, b, 2 inches 9 
twelfths long, funnel-shaped for half an inch, then 
cylindrical and nearly 4 twelfths in diameter, until 
it enters the thorax. Proventriculus, c, 34 twelfths 
in diameter, and with a belt of oblong glandules. 
Stomach ¢, d, elliptical, 74 twelfths long, 6 twelfths 
broad, its lateral muscles of moderate strength, the 
lower not distinct ; the epithelium with broad lon- 
gitudinal rugze, and of a dark reddish-brown colour. 
Intestine, ¢, 7,9, 7 inches long, its diameter at the 
anterior part 34 twelfths, gradually diminishing to 
14 twelfth. Cceca extremely small, 1 twelfth long, 
4 twelfth broad, and 14 inch distant from the anus; 
cloaca ¢, globular. 
Trachea 1 inch 10 twelfths long, tapering from 
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a diameter of 2 twelfths to 1 twelfth ; the rings ossified and firm, about 
70 in number ; the lateral and sterno-tracheal muscles slender ; the in- 
ferior laryngeal muscles are strong but very short, forming a prominent 
knob, and attached to the first bronchial ring. Bronchi wide, of about 
20 half-rings. 
The digestive organs of this bird, and of the Flycatchers in general, 
do not differ materially from those of the Thrushes and Warblers. The 
pharynx and cesophagus, however, are much wider. 
