37 



joint half the length of the upper, and enclosed in a web. The 

 index- finger, of three bony joints ; the last joint short, clawless. 

 Interfemoral membrane deeply cut out, fringing the hind legs to the 

 heel, hairy above and on the under side near the body, bald at other 

 parts. Tail elongate, slender, tapering, many-jointed, arising from, 

 and with the base attached to, the under side of the narrow interfe- 

 moral membrane ; as long as the hind legs. The skull elongate, 

 produced and slender in front. 



Cutting teeth |^ ; canines |^J ; grinders ^*. 



The cutting teeth conical, far apart ; the upper are very small, 

 rudimentary, on the middle of the intermaxillary bone between the 

 end of the nose and the canine teeth ; the lower rather larger, 

 conical, blunt, separated from each other by a broad lunate space 

 near the front edge of the canine teeth ; canine larger, grooved ; 

 grinders compressed, blunt. 



The upper cutting teeth are conical, small, far apart, placed on the 

 middle of the slender produced intermaxillary bones, which have a 

 small depression near the anterior extremity, like a cavity, whence 

 a second chisel-shaped tooth might be developed ; but as there is 

 no appearance of the tooth in either of the skulls, perhaps it may be 

 where a tooth of this kind has been shed. 



The lower teeth are small and blunt, placed near the front of the 

 base of the canine tooth. The edge of the front of the jaw between 

 these teeth is rather produced and sharp-edged, and is nicked near 

 the cutting tooth, giving the jaw somewhat the appearance of a se- 

 cond tooth, but it is not enamelled. 



The canines elongate, conical, acute, curved. 



The grinders are reniform, compressed, gradually diminishing in 

 size towards the back of the jaws ; the front one on each side in each 

 jaw is largest, higher than the rest, and crenated on the crown ; the 

 rest have a flat smooth crown. 



The tongue was not preserved ; but, from the form of the muzzle 

 and of the cutting teeth, I think it is very probably elongate, like 

 that of the genus Maci'oglossus. 



In the absence of the claw on the index-finger, this animal agrees 

 with the genus Cephalotes from Timor, as it also does with the ac- 

 count of the wings and the teeth given in the systematic works ; 

 but it differs from that genus very essentially when the specimens 

 of the two animals are compared. The head of Cephalotes is much 

 shorter and broader. The cutting teeth are exceedingly different ; 

 in Cephalotes the cutting teeth are close together, the upper ones 

 chisel-shaped, the lower ones rather conical, entirely filling up the 

 very narrow space between the base of the large canines ; while in 

 Notopteris they are only two far apart, small and isolated. 



The wings of the two genera arise from the centre of the back ; 

 and the bases of the wings, which cover the back, are naked. But 

 in Cephalotes the nakedness extends over the shoulders to a line 

 even with the front edge of the wings ; in Notoptei'is the naked 



