894 On a New Species of Plecolus. [Sept. 



port them ; lower incisors pressed between the canines and denticulate 

 on their crowns : laniaries large, curved, angular, with spiculate pro- 

 cesses before and behind at their base : molars purely insectivorous, 

 their crowns bristling with spikes and filling the entire space from the 

 laniaries to the posteal edge of both jaws. Tongue moderately exten- 

 sile and simple. 



The following are the dimensions in detail of a fine mature speci- 

 men : — 



Expanse of wings > 1 6 



Snout to vent 3 f 



Tail 



Caudal membrane 1 ^ 



Head to occiput, 1 \ 



Length of ears 1 £ 



Width of ears -J- 



Brachium 1 f 



Cubitus 2 T \ 



Long finger 5 



Femur 1 § 



Tibia 1 | 



Planta and nails f 



Weight 2 oz. 



On a New Sjiecies of Plecotus ; by the same, 



I have just obtained, for the first time, a sample of the genus Pleco- 

 tus, and one very nearly allied to the common English type so admir- 

 ably described by McGillivray in the VII. Vol. of the Nat. Lib. p. 

 85 — 90. My specimen was taken in the central region of the moun- 

 tains, in a dwelling house, where it was attracted at night by the lights, 

 and after a chase of above half an hour's duration, during which the 

 extraordinary volant powers of this Bat several times caused its 



