discovered hy Prof. Kolenati. 159 



The cutting-edges of the lower incisor teeth stand in the 

 direction of the jaw. The outer (second) upper incisor is not 

 quite so high as the outer point of the bicuspid inner (first) 

 toothj and is strikingly weaker than the first tooth in its 

 transverse section. The upper canines are remarkably large, 

 nearly twice as long as the lower ones. In the upper jaw there 

 are four, and in the lower jaw five molar teeth on each side. 

 The first inferior molar is nearly one-half lower than the 

 second. 



On the spm--bone there is a very inconsiderable membranous 

 lobe, measuring only | millim. at its broadest part ; this does 

 not project angularly, but runs parallel to the spur-bone, or, 

 rather, becomes very gradually narrower and terminates about 

 the middle of the spm--bone. This membranous lobe is so 

 slightly developed that it may easily be overlooked on a cur- 

 sory examination, but it nevertheless exists. 



The wing-membrane is attached as far as the roots of the 

 toes. The tip of the tail stands freely out of the membrane. 



The colour of the long fur is dark brown above, yellowish 

 beneath. The hairs are of two colours, both above and below, 

 the base dark blackish brown, the apical third above and the 

 apical half below light yellowish brown. The apices of a 

 portion of the dorsal hairs have a nearly golden lustre. The 

 interfemoral membrane is furnished with tolerably close, uni- 

 formly brown hairs, without golden lustre. The ears, muzzle, 

 and wing-membrane are dark brownish black. 



The animal here described by me consequently agrees very 

 well (leaving out of consideration the shorter whiskers) with 

 the description of Kolenati's Amblyotus atrafiis, with the ex- 

 ception of two characters. My specimen has a very narrow, 

 but still unmistakeable membranous lobe on the spur-bone; and 

 the second joint of the fourth finger is much longer in propor- 

 tion to the third, in my individual, than accords with Kolenati's 

 description, as my measurements of the joints in question are 

 7*5 and 12*5 millims., and Kolenati's 9 and 19 millims. 



The question now was whether this Bat could not be referred 

 to some previously known species. From the number of molar 

 teeth it could only be referred to Vesjjerugo Nilssonn, Keys. & 

 Bias., or to V. discolor , Natt. But from V. NiJssonii the ani- 

 mal from the Altvater is distinguished by the bwer incisor 

 teeth standing quite distinctly in the direction of the jaw, and 

 by the second upper incisor being lower and far weaker in 

 proportion to the first ; from F. discolor by the smaller height 

 of the first upper incisor, which in the Altvater Bat is scarcely 

 once and a half the height of the second tooth, whilst its outer 

 point is, indeed, somewhat higher than the second incisor, but 



12* 



