158 



Zoological Society : — 



length and substance of the teeth, especially the canines in M. ble- 

 potis. In this species the upper canines are so long as to pass, when 

 the jaws are closed, almost to the lower margins of the lower jaw, 

 whilst in M. Schreibcrsii their points reach only to about the middle 

 of the ramus. It is also deserving of notice, that the singularly 

 formed outer incisors of the lower jaw exhibit the peculiarity already 

 alluded to in a much greater degree in this species than in M. Schrei- 

 bersii, or indeed than in any other species appertaining to the genus. 

 Columns 1, 2 and 3 in the following table of dimensions refer to 

 specimens from Japan, 4 and 5 to specimens from Amboyna, and 6 

 to the specimen in the collection of the British ^Museum, from which 

 Mr. Waterhouse took his description of V. Eschscholtzii. 



Length of the head and body... 



of the tail 



of the head 



of the ears 



of the tragus 



of the fore-arm 



of the longest finger . 



of the fourth finger , 



— of t!ie thumb 



of the tibia 



of the foot and claws . 



Expanse of wings. 



The specimens, the dimensions of which are given in the next 

 table, formed part of !Mr. Gould's Australian collection, and were 

 obtained at several localities. They have been selected from a con- 

 siderable number as fair representatives of the so-called Scotophilus 

 Mario. 



1. 2. 3. 



in. lin. in, lin. in. lin. 



Length of the head and body . . 2 8 



of the tail 2 2 



of the head 9 



of the ears 3^ 



of the tragus 2\ 



of the fore-arm 1 10 



of the longest finger . . 3 6 



of the fourth finger. ... 2 2 



of the thumb 3^ 



of the tibia 9 



of the foot and claws . . 5 



Expanse of wings 13 10 



2 9 



1 9 

 9 

 3| 

 2i 



1 n 



3 6 



2 3 

 4 

 9 

 5 



14 



2 

 2 

 

 

 

 1 

 3 

 2 

 

 

 

 13 



8| 



l\ 



9 



6 



1 



4 



8f 



4| 



6 



3. M. TRISTIS. 



Vespertilio tristis, Waterhouse, Proc, Zool. Soc. pt, xiii. p, 3, 

 1845 ; Gray, Zool. Voy. Samar, p. 31, 1849. 



The muzzle of this species is relatively broader and more obtuse 

 than in any other species of the genus ; and this peculiarity, together 



