XVI THE LONG-EARED AND OTHER BATS 529 



The genus Vespertilio contains some forty-five species, and is 

 world-wide in range. It has one more premolar in the upper 

 jaw than has Vcsiierugo. There are no less than six British 

 species, of which V. murinus is the largest species of Bat recorded 

 from this countr}-, but is not quite certainly indigenous. 



Plecotus has very long ears. The dentition is 1 1- C -^ Pm -j M -1. 

 The tragus is very large. There are but two or possibly three 

 species, of which one is Xorth American, and the other is the 

 Long-eared Bat, P. auritus, of this country, but ranging as far as 

 India. The shrill voice, inaudible to some ears, of this Bat has 

 been heard of by everybody. 



Synotus includes the British Barbastelle, ^S*. barbastellus, as 

 well as an Eastern form. It differs from the last genus principally 

 by the loss of a lower premolar. The ears, too, are not so large. 

 Oionycteris, Nyctojohilus, and Antrozous are allied genera ; the 

 last is Californian, the others Old-World forms. 



Keriroula (or Ccrivoula) has a long, pointed, narrow tragus. 

 The tail is as long as or longer than the head and body. The 

 dentition is as in Vespertilio ; but the upper incisors are parallel 

 instead of divergent as in that genus. The brilliantly-coloured 

 K. picta is, on account of this very fact, the best-known species. 

 The name Kcrivoida, a corruption of the C'inghalese " Kehel vulha," 

 signifies plantain bat. This Bat has been described as looking, 

 when disturbed in the daytime, more like a huge butterfly than a 

 Bat, which is naturally associated with sombre hues. Other 

 species occur in the Oriental, Australian, and Ethiopian regions. 



Miniopterus has a premolar less in the upper jaw ; it has a 

 long tail as in the last genus. One species, M. scheibersi, has 

 almost the widest range of any Bat, it being found from South 

 Europe to Africa, Asia, Madagascar, and Australia. 



Natalus is an alUed form from Tropical America and the West 

 Indies. It is chiefly to be separated from Kerivoula by the short 

 tragus to the ear. 



Thyroptera is also South American. It is distinguished by 

 the curious sucker-Uke discs upon the thumb and foot. These 

 " resemble in miniature the sucking cups of cuttle-fishes." The 

 Madagascar genus, Myxopoda, with but one species, has also an 

 adhesive but horse-shoe-shaped pad upon the thumb and foot. 



Scotophilus has shortish ears with a tapering tragus. The tail 

 is shorter than the head and body, and is nearly contained within 



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