/ LSI >ER TI LI ONI J K E 66 1 



the glandular prominences of the sides of the muzzle, which meet 

 in the centre above and behind the nostrils. P. auritus extends 

 over the greater part of the Palsearctic region, occurring in Ireland 

 in the west and the Himalaya in the east. 



Synotus. 1 — Dentition : i § , c \, p f, m f ; total 34. This genus 

 is distinguished from the preceding by the loss of one lower pre- 

 molar and by the outer margin of the ear being carried forwards 

 above the mouth and in front of the eye; it includes the European 

 Barbastelle Bat (S. barbastellus) and S. tlarjilingensis from the Hima- 

 laya. 



Otonyderis. 2 — Dentition: i J, c \, p |, m f ; total 30. The 

 reduction in the number of upper incisors readily characterises this 

 genus, which appears to connect the typical representatives of the 

 section, through Scotophilus, with the Vespertilionine division. It is 

 represented by a single species, 0. hemprichi, from North Africa and 

 the Himalaya. 



Nydophilus. 3 — Dentition: i j, c \, p h, jh | ; total 30. This 

 and the following genera are distinguished from all the preceding 

 by the presence of a rudimentary nose-leaf. The present genus 

 contains N. timoriensis of the Australian region, and N. microtis of 

 Xew Guinea. 



Antrozotis.* — Dentition : i -^ c \, p |, m f ; total 28. Readily 

 distinguished from the other members of the whole family by 

 having but two lower incisors, and from the other species of the 

 section by the separate ears. The single species, A. pallidas, in- 

 habits California. 



The Vespertilionine division includes some nine-tenths of all the 

 representatives of the family. They are distinguished from the 

 preceding section by the simple nostrils, opening by crescentic or 

 circular apertures at the extremity of the muzzle, the generally 

 small size of the ears, and the absence of grooves on the forehead. 



Vesperugo. 5 — Dentition: i ^ l , c \, p 2 ~, mf; total 34, 30, 

 or 36. This large genus comprises about one-third of the section, 

 and is divided into groups or subgenera, according to the number 

 of premolars and incisors ; the latter varying from § to ^ in the 

 subgenera Scotozous and Rhoge'essa, and the premolars from J- to i (in 

 the subgenus Lasionyderis §). The Bats of this genus are generally 

 easily distinguished by their comparatively thickly formed bodies, 

 flat broad heads and obtuse muzzles, short, broad, and triangular 

 obtusely-pointed ears, obtuse and usually slightly incurved tragus, 

 short legs, and by the presence in most species of a well-developed 

 post-calcaral lobule. This lobule (which is supported by a cartil- 



1 Keyserling and Blasius, Wirbelthicre Europ. p. 55 (1840). - Peters, 



Monatsber. Ah Berlin, 1859, p. 222. 3 Leach, Trams. Li mi. Soc. vol. xiii. 



p. 78 (1822). 4 Allen, Proc. Ac. Nat. Sci. Philad. 1862, p. 247. 



r ' Keyserling and Blasius, Wiegma un's Archiv, 1839, p. 312. 



