BATS. 15 



muzzle rather pointed ; ears more or less ovate, longer 

 than broad, tragus long, narrow, tapering, with the tip 

 bent a little outwards. 



A. Wing membranes extending along the foot to 

 the base of the toes. 



Ex. Vespertilio Nattereri and V. mystacinus. V. mu- 

 rinus also appertains to this group, but is a less typical 

 species. 



B. Wing membranes extending only to the distal 

 extremity of the tibia, leaving the foot free. 



Ex. Vespertilio Daubentonii. 



We have been unable to examine as fully as we could 

 wish one of our British species, the Vespertilio Bechsteinii, 

 but are much disposed to suspect that it will be found to 

 be more closely related to a small group of ex-European 

 species than any of the above. 



Genus, Scotophilus. Top of the head broad and flat, 

 muzzle broad ; ears short and rather broad, rounded or 

 approaching to a triangularly ovate form, tragus broad, 

 rounded at the end, and curved inwards. 



A. Ears roundish, tragus much broader at the 

 end than at the base ; head very broad and flat ; 

 wing membranes extending only to the distal ex- 

 tremity of the tibia. 



Ex. Scotophilus noctula. S. Leisleri and S. discoor are 

 less typical species of this circumscribed group than 

 S. noctula, but they nevertheless appertain to it. 



B. Ears triangularly ovoid, tragus of nearly 

 uniform breadth, round at the end, and evenly 

 curved towards the head ; wing membranes ex- 

 tending to the base of the toes. 



Ex. Scotophilus pipistrcllus. To this group belongs the 

 Vespertilio Kuhlii of Natterer, described in KuhFs 

 Memoir on the Bats of Germany, and the more 



