Variation and Natiiral Selection. 



73 



Noctule Gr. Horse Shoe Hairy Armed Long Eared Lr.Horse Shoe Whiskered Pipistrelle 



'adius and 



Ulna 

 51.5 mm 



Metacarpal 

 43 mm 



Metacarpal 

 44 mm 



111 



halanges of Digr 



IV 



Metacarpal 

 45 mm 



lalanges of Digit 

 27.5 mm 



Metacarpal 

 42 mm 



V 



jalanges of Digit 

 24 



Tibia 

 21.5 





Fig. 17. Variations adjusted to the standard of the noctule. 



