384 Mr. O. Thomas on Three new Bats. 



on inner edge 5-5 ; thumb 8 ; third finger, metacarpus 33, 

 first phalanx 11*5, second phalanx 10*5, third phalanx 7*3 ; 

 fifth finger, metacarpus 31, first phalanx 9, second phalanx 9 ; 

 tibia 16; hind foot (c. u.) 11; calcar 16; free border of 

 uropatagium 6. 



Bab. Yellowstone Lake, Yellowstone Park, N.W. 

 Wyoming. Alt. 8000 feet. 



Type. Female (just adult). B.M. no. 4. 4. 25. 1. Col- 

 lected September 1903; presented by J. ffolliott Darling, Esq. 

 " Caught flying about the Lake Hotel, although the weather 

 was snowy ." 



This bat is very closely allied to M. Dauhentoni, but has 

 a more strongly whiskered muzzle, rather larger ears, a less 

 projecting tail-tip, and appears to be darker in colour 

 throughout. 



My own inclination would still, however, be to regard it 

 as a subspecies of M. Dauhentoni; but as I am not writing a 

 general monograph of the group, it seems better in the case 

 of a United States bat to conform to the ideas about nomen- 

 clature prevalent in that country. 



From M. yumanensis saturatus, Miller, apparently its 

 nearest American ally, M. carissima is readily distinguishable 

 by its much longer forearm and still larger feet. M. sub- 

 ulatus, Say, of similar size, has conspicuously smaller feet 

 and broader ears. 



The British Museum also contains another bat, from Lake 

 Winnipeg, collected by Sir John Richardson, which appears 

 to be referable to M. carissima, but is unfortunately in too 

 bad a condition for certain determination. It was referred by 

 Dobson to M. lucifugus, but is certainly not that species. 

 Allowing for the great altitude of Lake Yellowstone, the 

 occurrence of the same species at Lake Winnipeg, considerably 

 further north, would be quite natural. 



In the Old World M. Dauhentoni occurs in Scandinavia, 

 and, as Dobson says, " attains the most northerly range of 

 all the species of the genus." 



XLVI. — Three new Bats, African and Asiatic. 

 By Oldfield Thomas. 



Hipposideros Commersoni and its subspecies. 



The bats currently referred to H. Commersoni fall into four 

 groups, divisible by size, by the number of supplementary 

 nose- leaves, and by colour. 



