124 ORDER IL'. 



depends upon a specimen in the Museum of Uni- 

 versity Colloge, London ; with a conical head ; flat 

 forehead ; ears large, separate, apparently truncated ; 

 tail with membranous band, prolonged to the point 

 of the interfemoral membrane; alar membrane dark- 

 brown ; body rusty-brown. Dent. form, incis. f , 

 can. J--J, mol. ^ = -Jf = 30. Habitat unknown. 

 Another more questionable genus of the same au- 

 thors, is that called CELJENO, which, according to 

 Mr. Gray, is a Noctilio, without the bones of the 

 tail present in the skin. 



The genus PTERONOTUS of Mr. Gray, proposed 

 from a specimen in the Museum of Fort Pitt, at 

 Chatham, is not figured that we know of; and the 



Genus MYOPTERIS of Geoffrey contains the Rat 

 Volant of Daubenton. The nose is simple ; the 

 ears broad, separate, lateral, with internal opercu- 

 lum ; tail long, one half engaged in the membrane ; 

 muzzle short and thick ; colour brown, beneath 

 lighter. Dent. form, incis. f , can. -, mol. T 8 = 

 {f =26. 



Tribe II. "Diphalangia istiophora. Two-jointed 

 Leaf-nosed Bats. Having the index with two ossi- 

 fied phalanges, the middle finger with three, and 

 nose with one or two leafy appendages. 



In the groups of this tribe, the cutaneous system 

 is in the extreme of developement, both with respect 

 to the extent of membrane between the digits, and 

 in the horse shoe forms and tubes about the nostrils, 

 leaf-like appendages on the nose, the expansion of 

 the ears, and the extent of the interfemoral mem- 



