94 BRITISH MAMMALS 



growdown so low as the angle of the mouth, but starts on a line 

 with the origin of the lobe of the inner margin of the ear ; so 

 that the ear, though long and provided with rather a marked 

 tragus, has nevertheless a normal aspect. The muzzle is more 

 pointed ; the eyes are small and deep-set ; the nostrils are 

 simple and not projecting. In some respects these are the least 

 specialised among the British bats. 



^Myotis dasycneme. THE ROUGH-LEGGED BAT 



In this bat the bony spur which starts at right angles to the 

 heel to support the membrane stretched between the thigh and 

 the tail is unusually long, and extends for over three-quarters of 

 the distance along the edge of the membrane from the ankle to 

 the tail. The thumb is armed by a very large claw. The earlet, 

 or tragus, has a blunt, rounded tip, and in some respects resembles 

 the same feature in forms of Pterygistes. The ear-conch also is 

 shorter, and the face is less hairy than in the typical Myotidine 

 bats. In the teeth the first and second upper premolars are 

 pushed inwards, so that the large third premolar nearly touches 

 the canine. The fur on the upper surface of the body is blackish 

 in the lower parts of the hairs, and light brown at their tips. 

 The belly has a more " pepper and salt " appearance, as the hairs 

 are white at the tip and black below. The size of this bat is 

 fairly large. The length of head and body is nearly 2-| in., and 

 the tail, which is long, measures 2 in. more. The flight is 

 vacillating and butterfly-like. 



Until recently this bat was only represented as a British 

 species by one example, captured on the River Stour, near 

 Christchurch, where its captor, Lord Lilford, found it swimming. 

 But subsequently it has been found in Warwickshire, and in 

 several places in the south of England. Elsewhere its range 

 extends through Central Europe to Asia. 



My otis daubentoni. DAUBENTON'S BAT 



This is a smaller animal than the preceding, not 2 in. in length, 

 with a tail measuring if inches. Like the rough-legged bat, it 



