Geological Society. -31 



tapers evenly to a subacute point, which lias a very slight outward 

 tendency. 



The wing-membranes extend only to the distal extremity of the 

 tibia, leaving the feet wholly disengaged. The latter are large, and 

 have the toes longer than the remaining part of the foot. 



On the interfemoral membrane may be observed about eight 

 strongly marked transverse lines. The tij) of the tail is free fur tlie 

 length of its terminal joint. 



The wings are ample and broad, as the length of the fingers re- 

 latively to each other, and to the other dimensions, as given below, 

 will testify. 



The fur of the forehead ajjproaches to n?ar the end of the nose, 

 but around the eves the face is nearl}' naked, and the upj)er lip is 

 destitute of a moustache. All the membranes are naked. 



The fur is long, ralher soft, and inclining to silky on the upper 

 parts. On the whole of the upper surface of the body it is dark 

 brown at the root, with its terminal half cinnamon-brown, i)rightest on 

 the rump, and tinged with grey on the head and neck. Beneath it is 

 dark at its base, with its terminal half brownish-white. Both above 

 and beneath, the bicoloured character of the fnr is conspicuous, and, 

 as already mentioned, bears some resemblance in this respect to that 

 of V . ferruyineus . 



It I'l 

 Length of tlie head and body, about .... 2 .';5 



of the tail 1 9 or 1 



of the head U 10 T 



of the ears 1\ 



of the tragus \ 



of the fore-arm 2 "2 or 3 



of the longest linger .'i 1 



of tlie fourth linger 3 



of the thumb ."» 



of the tibia II 



of the foot and claws (i-5 



Expanse of wings 13 U 



llab. A single specimen in the British Museum Collection is 

 labelled "India, Nassenabad, from Mr. Warwick, 1818," and, I be- 

 lieve, was collected by Ca])t. Boys. 



GEOLOGICAL SOCIETY. 



April 8, 1857. — Col. Portlock, R.E., President, in the Chair. 

 The following communication was read : — ■ 



•' On the Species of Mastodon and Elephant occurring fossil in 

 Great Britain.— Part I. Mastodon." By H. Falconer, M.D., F.R.S.. 

 F.G.S. 



The object of this communication Js to ascertain what are the 

 species of the Proboscidoa found fossil in Britain ; what the specific 

 names which ought to be applied to them ; and what the principal 



