30 VESPERTILIONID^, 



which we have alluded approach in colour to a fuli- 

 ginous-brown on all parts, and tinged with ash-colour. 

 Flying membrane dusky ; the part contiguous with the 

 body generally hairy both above and beneath ; but in 

 some specimens this peculiarity is by no means con- 

 spicuous. Thumb short and feeble. 



The colour is said to be much darker in young than in 

 old specimens; a circumstance which is also observed in 

 some other species, as V. Daubentonii, the Pipistrelle, &c. 



Dimensions : 



Inch. Lines. 

 Length of the head and body . . . .26 



,, of the head 09 



, , of the tail 18 



,, of the ears ...... 5 



Breadth of the ears 04 



Length of the tragus . . . . 1^ 



Extent of the wings . . . . . 11 3 



Dentition : 



I.I : C.| : P.M. 4 : M.S = . 



