60 Rev. Leonard Jenyns on two Species of Flecotus. 



the older authors, to which no measurements are annexed, will 

 apply equally to either species. 



I cannot conclude this paper without expressing a hope, that 

 it may at least induce others to make inquiry with respect to the 

 bats found in their own neighbourhood. I strongly suspect, 

 that even the two above described are not the only species of 

 Long-eared Bat that are to be met with in this country. I well 

 remember, that about five years since a bat of this kind was 

 brought to me at Ely, which was taken in a bed-room, and 

 which at the time I immediately referred to the Vesper tilio auri- 

 tus of Linneeus, not having then paid much attention to these 

 animals : however, I am since convinced, from a memorandum 

 I made respecting it, that it must have been a much larger spe- 

 cies than either of the above two, and in point of size more 

 nearly approaching to the Vespertilio Noctula. Possibly this 

 may have been the var. /S. of Desmarest, or the Big-eared Bat 

 described by Rafinesque under the name of Vespertilio mega- 

 lotis*. This, however, cannot now be determined, as the spe- 

 cimen was not preserved. I only mention the circumstance to 

 show that the history of these animals, so far at least as relates 

 to our British species, is still imperfect, and to invite natu- 

 ralists to a further investigation of the subject. 



EXPLANATION OF TAB. L 



Fig. i. A portion of the Plecotus auritus, exhibiting a compara- 

 tive view of the anterior and posterior extremities, 

 the tail, and interfemoral membrane. 

 2. Plecotus brevimanus, of the natural size. 



See Desmar. Mammal, p. 133 (note). 



IV. A De- 



