I'lnsTKiaj.K. 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 

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

 matter of no small interest : — 



" Head much depressed in front, convex behind, with 

 the upper })art of tlie 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 U]) 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 when 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 ratlier 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 tlie auricle, 

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

 or .slightly bending inwards. In llic u[)per jaw four 



G 



