372 PHYLLOPNEUSTE TROCHILUS. 



central line ; the lower more concave, with a finer median line. 

 The tongue is slender, tapering ; its tip slit. The oesophagus 

 is of nearly uniform diameter throughout, its length two inches 

 and two-twelfths, its average breadth two-twelfths. The sto- 

 mach is six and a half twelfths long, of an oblongo-rotundate 

 form ; its muscular coat thin, but divided into three somewhat 

 distinct muscles ; the tendons large ; the inner coat thin, with 

 broad longitudinal rugae. The intestine is seven inches long, 

 its duodenal portion two-twelfths in diameter, the rest diminish- 

 ing to one-twelfth ; the cceca one-twelfth long. 



The eyes are of moderate size, their aperture having a dia- 

 meter of nearly a twelfth and a half. That of the external ear 

 is two and a half twelfths. The nostrils are linear-oblong, a 

 twelfth and a half in length. The feet are very slender ; the 

 tarsus longish, much compressed, with seven anterior scutella, 

 of which the upper four are indistinct ; the toes of moderate 

 length, much compressed, the first with eight, the second with 

 eight, the third with ten, the fourth also with ten scutella. 

 The claws are arched, acute, much compressed, with deep la- 

 teral grooves. 



The plumage is very soft and blended, the feathers broad, 

 with discrete barbs ; the nasal membrane with small roundish 

 feathers, the basal margins of the upper mandible with small 

 bristle-feathers. The wings are of moderate length, their tips, 

 when closed, being an inch distant from the end of the tail. 

 The quills, nineteen in number, are a little decurved ; the first 

 is nine-twelfths of an inch long, the second intermediate in 

 length between the fifth and sixth ; the third; fourth, and fifth, 

 havinsf the outer web cut out towards the end ; the secondaries 

 long and abruptly rounded. The tail is rather long, and a lit- 

 tle emarginate, the middle feathers being a twelfth and a half 

 shorter than the longest. 



The upper mandible is dusky brown, the lower brownish- 

 yellow, its edges dusky orange, those of the upper paler ; the 

 inside of the mouth and the tongue light orange. The irides 

 are dusky-brown. The feet are yellowish-brown, the claws 

 wood-brown. The plumage of the upper parts is light greenish- 

 brown ; the wing-coverts, quills, and tail-feathers greyish- 



