42 vespertilionidj:. 



incisors — on each side two, of which the first is longest ; 

 in the lower jaw six, each of which has three lobes : 

 grinders five on either side, above and below ; the first in 

 the upper, and the two first in the lower jaw, with only 

 one point : of these last-mentioned teeth, the second is 

 longer than the first ; the other grinders in the lower jaw 

 have each five points, three on the inner and two on the 

 outer margin, which last are alternately long and short. 

 Fur rather long and silky, yellowish red on the forehead 

 and at the base of the ears ; on the rest of the upper 

 parts reddish brown, with the lower half of each hair 

 dusky : on the under parts the hair is wholly dusky, 

 except at the extreme tips, which are of the same colour 

 as above, but paler. In young specimens the fur is 

 entirely of a dusky brown or brownish grey, in some 

 instances almost black, without any tinge of red, which 

 apj)ears to come afterwards, and to increase in intensity 

 with the age and size of the individual. Nose, lips, ears, 

 flying and interfemoral membranes, dusky." 

 Dimensions : — 



Length of the head and body 



,, of the head ..... 



,, of the tail ..... 



,, of the ear ..... 



, , of the tragus ..... 

 Breadth of the ear ..... 

 Length of the fore-arm .... 

 Extent of the wings ..... 



Dentition : — 



j.l : C. i : F. M. | : M. §=||. 



We insert here the figure of Vesper tilio pygmaus, which 

 was given in the first edition of this work, but we do 

 not deem it necessary to add a description, as there is 

 now no longer any doubt that it is a young Pipistrelle ; 



