Rev. L. Jenyns on a new Species of Bat. 75 



proceed one or more small bristles : there are also a few mi- 

 nute scattered bristles along the margin. The tail is a little 

 shorter than the fore arm, and the tip appears to project a 

 little from the membrane, but owing to the dried state of the 

 skin, this last point cannot be accurately determined. The 

 feet are large, (much larger than in either V, mystacinus or 

 V. Pipistrellus) : the toes long and bristly. The thumb is 

 longer than in either of the two species just mentioned. The 

 fur is thick and woolly about the head, advancing a little on to 

 the ears externally at the base ; on the other parts of the body 

 of moderate length. Its colour (in this specimen) everywhere 

 of a beautiful silvery white : the membranes are also white, but 

 of a less pure tint. 



Dimensions. 



Inc. Lin. 

 Length of the head and body 2 



of the tail 1 3 



of the ear (beh ind) 4j- 



of the ear {in front) 6 



of the tragus 2J.- 



Breadth of the ear o perhaps more. 



of the tragus (in the middle of its lenyth) ... 0^ 



Length of the arm 7 



of the fore arm 1 4-A 



of the thumb 3 



Extent of the flying membrane 10* 



I have compared this bat closely with specimens of most 

 of our British species, with which it can possibly be con- 

 founded. It may be of use to point out the leading differences 

 in each case. 



From V. Nattereri it may be at once distinguished by its 

 smaller ears and shorter tragus, independently of other cha- 

 racters. From V. Pipistrellus, by its larger size altogether, 

 sharper snout, longer fore arm and thumb, longer and more 

 slender tragus. From V. mystacinus, by its somewhat supe- 

 rior size and greater amplitude of wing ; by the ears not being 

 so deeply notched, and the tragus not subulate, but of the 

 form already described ; larger feet ; want of transverse lines 

 on the interfemoral membrane, &c. From V. Daubentonii, 



* Not less ; but from the way in which the membranes are dried, this 

 measurement cannot be made with accuracy. 



G 2 



