526 GENERA OF FRUIT BATS chap. 



three remaining below ; wliile there is l)ut one molar in each 

 upper jaw, and two in each lower. Dr. iJobson has studied 

 the structure of tlie remarkable pliaryngeal sacs which exist in 

 the neck of the male, and are capable of inflation. 



Ftcralopcx of the Solomon Islands lias shorter ears tlian have 

 mmy Fteropus, otherwise its external characters are tlie same. 

 As in Fteropus nicoljaricus, this genus has tlie orbits shut off' by a 

 bony ring, an extremely rare plienomenon in Bats. The canines 

 liave two cusps. The characters of tlie grinding teeth have 

 already been mentioned. It is uncertain whether tlie only 

 species of this genus, P. atrata, is, or is not, a vegetable feeder. 

 Harpijia has shortisli ears and extraordinarily prolonged and 

 tubular nostrils. There is a hint of the accessory cusp to the 

 canines mentioned above in Pteralopex. The incisors are reduced 

 to one on each upper jaw, and none below. Cynoyterus has also 

 often bituberculate canines. It is an Oriental genus with several 

 species. 



Xesonycteris, with one species from tlie Solomon Islands, N. 

 ■ivoodfordi, has the dental formula I j \ I'm i| M |. The index 

 finger has no claw: the tail is absent. The 'premaxillae are 

 separated anteriorly. 



Eonycteris, with a single cave-dwelling species from Burmah, 

 E. spclaea, has also no claw upon the index ; the tootli formula 

 is fuller by reason of the presence of an additional incisor below. 

 The tongue is very long and is armed witli papillae. There is a 

 short but distinct tail. 



Notopteris, from Xew Guinea and tlie Fiji Islands, is dis- 

 tinguished from the related genera by its long tail. 



The remaining genera of Fruit Bats are Boneia, Harpyionyc- 

 feris, Cephalotes, Callinycteris, and Macroglussus, from the Oriental 

 region, and Scotonycteris, Liponyx, and Megaloglossiis from the 

 Ethiopian region ; finally, there is the Australian Melonycteris. 



Sub-Order 2. MICEOCHIKOPTEEA. 



The members of tliis sub-order are mostly insectivorous tliough 

 occasionally " frugivorous or sanguivorous " Bats. The molars are 

 multicuspid with sharp cusps. The palate is not continued back 

 behind the last molar. The second finger lias but one phalanx, or 



