162 DUBLIN NATURAL HISTORY SOCIETY. 



Family — Vespeetilionida. 



Nose simple ; ears with an internal appendage ; tail long, enclosed 

 in the interfcmoral membrane. 



Genm — Flecottis. 

 Ears elongate, united at base ; ears and tragus broad; nasal groove 

 simple, lunate. 



Long-eared bat {Plecotus auritus). 



Dentition : |, f , ^^ ; total, |^. 



Ears, twice length of head ; tail, longer than forearm. 



DIMENSIONS. 



Length of head and body, 1 -9 



„ head, 0-76 



,, tail, 1*5 



„ ears, 1*4 



„ tragus, 0-6 



„ forearm, . 1 "45 



„ humerus, 0-75 



Spread of wings, 9*0 



Length of femur, 0*8 nearly. 



„ tibia, 0-625 



„ thumb or poUex, 0*3 



,, second finger, 1*3 



„ third finger, 2-37 



„ fourth finger, 1*9 



„ fifth finger, 1-9 



Ears ovate, entire on outer margin which is strongly plicate, notched 

 internally at base which is distinctly lobed ; tragus falciform at base, 

 beneath notched. 



Fur moderately long, silky, soft, rufous above, the centre darkest ; 

 bases of hairs bluish gray ; under parts pale-yellowish gray, lightest on 

 flanks; interfcmoral very sparsely hairy; glandular lines distinctly 

 marked, numerous (11-12). 



This description is taken from a specimen procured at Aughnacloy, 

 county of Tyrone, by Edward WaUer, Esq., and now in my possession. 



The interfcmoral bands vary in number and in correspondence on 

 each side of the tail, being eleven on one side and twelve on the other. 

 The length of the tail and forearm nearly correspond ; but those of third 

 finger exceed those of forearm and arm, taken together, by above 0*2 

 inch ; the colour of the fur also answers to the descriptions of Plecotus 

 auritus, and not to the descriptions oiPlec. brevimanus, if this latter be 

 a distinct species. 



BeU's figures of the species are highly characteristic. 



Habitat : The following interesting account of these bats is taken 

 from Professor M'Coy's paper, already quoted : — " The first time I saw 



