PIPISTRELLE. 41 



excepting in the very great difference of size, bears 

 considerable general resemblance to the Noctule. The 

 following description is so accurate and complete, that 

 I have adopted it verbatim from Mr. Jenyns' paper ; 

 and I have preferred it to a less extended one, as the 

 identification of this species is, as has been stated, a 

 matter of no small interest : 



" Head much depressed in front, convex behind, with 

 the upper part of the occiput remarkably protuberant; 

 no occipital crest. Muzzle extending three lines beyond 

 the ears ; in young specimens rather elongated which 

 appearance wears off afterwards, from the enlargement 

 of the head and the filling up of the sides of the face, 

 when the profile is somewhat altered. Nose obtuse at 

 the extremity, and slightly emarginate between the 

 nostrils ; these last reniform, with tumid edges : on each 

 side of the nose, immediately above the upper lip, is a 

 protuberant swelling, formed by a congeries of sebaceous 

 glands, which w r hen cut through are of a yellowish white 

 colour. Eyes round and very small, situate half way 

 between the above glands and the ears, and sunk deep in 

 the head ; over each, immediately above the anterior 

 angle, is a small elevated wart furnished with a few black 

 hairs ; a transverse tuft of rather long upright hair on 

 the forehead, which has the effect of making the head 

 appear more elevated than it really is : rest of the face, 

 including the cheeks, contour of the eyes, and space 

 above the nose, almost naked, particularly in young speci- 

 mens. Auricle broad, rather more than half [about two- 

 thirds] as long as the head, oval approaching to triangu- 

 lar, deeply notched on its external margin about midway 

 down: tragus [nearly] half the length of the auricle, 

 oblong, and terminating in a rounded head, nearly straight, 

 or slightly bending inwards. In the upper jaw four 



