DtTBLIlf NATUBAL HISTORY SOCIETY. 165 



Daubenton's bat ; Fespert, Dauhentonii (Leisl.) 



Dentition : J, f , ^ ; total, ig. 



Upper lip with a slight moustache; general colour, grayish red, 

 without any tinge of black ; tragus scarcely half length of ear, curved 

 on inner margin, pointed, lanceolate ; interfemoral covered beneath by 

 ill-definod numerous hairy lines, fringed with a margin of stiffish 

 hairs. 



DIMENSIONS. 



Male. Female. 



Inches. Inches. 



Length of head and body, ... 20 ... 2075 



head, 0-6 .. . 06 



tail, 1-35 . . . 1-25 



„ ears, 0*6 . . . 06 



„ tragus, 0-25 . . . 025 



,, forearm, 1*5 



Spread of wings, 987 . . . 10-37 



Additional Measurements. — Humerus, 1 inch nearly ; cubitus, 

 15 inch; poUex, 0*25 inch; second linger, TO inch; third linger, 

 2-4 inches; fourth finger, 2-0 inches; fifth finger, 2*0 inches; leg, to 

 end of claw, 1-25 inch; breadth of ears beneath, 0-30 inch. 



The females all exceeded the males in the spread of the wings, and 

 were lighter-coloured beneath. These measurements are the average of 

 those of twelve specimens. 



Tragus narrow, lanceolate, same colour as ear, lobed at base exter- 

 nally, internal margin curved; ears lobud at base externally, and 

 slightly notched about half-way down, upper-half naked, base clothed 

 with a fine, close fur; back, head, shoulders, and face, dark- reddish gray, 

 base of hairs, bluish gray ; along angles of the jaws, reddish gray; belly, 

 grayish white, roots of hair, nearly black, lightest along the median 

 line ; around the arms, white ; interfemoral membrane, light, dusky ; 

 glandular bands, numerous (varying from eight to fourteen in those 

 specimens which I examined), covered with scattered hairs, and fringed 

 with a margin of stilfish hairs ; claws robust and clumsy-looking, the 

 most so of any of our Irish bats, ciliated with strong, white hairs ; tail 

 exserted nearly 0-1 inch; whiskers, long and stiff ; moustache, soft, 

 black, and velvety-looking, distinctly marked ; a deep sulcus between 

 nostrils ; follicles well marked and prominent. 



Habitat : holes in walls. 



Locality : County of Londonderiy, Ordnance Survey Collection ; 

 since lost ; Tankardstown Bridge, county of Kildare, 1 853, &c. 



In 1853, Frederick Haugh ton, Esq., Levitstown, county of Kildare, 

 invited me to go down to that county to examine a locality in which he 

 had himself, some time previously, counted thirty-five bats coming out 

 of a little hole in the buttress of a bridge. On the 22nd of June I availed 

 myself of the invitation, and, before going down to the bridge, he gave 

 me two specimens which ho had shot the previous evening on the River 

 Barrow, at the time remarking to me that they were lighter in colour 



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