1 02 PTEKOI'ID.K. 



small ; upper subtrigonal ; lower smaller, circular ; lower false 

 grinder rather large, truncated, with an oblong crown ; upper 

 wanting ; upper cutting-teeth rather wide. Face shorter and wider 

 than in P. natvaiensis, No. 14, from Nawai. 



5. Spectrum leucopterum. 15. M- 



Fur very soft, uniform pale whitish brown ; underside duller ; 

 wings thin, very pale brown, whitish at the tips ; the back, shoulders, 

 and nearly the whole length of the forearm with close-pressed hairs ; 

 thighs and legs with Avoolly hair. Forearm 5| inches. 



Pteropus leucopterus, Temm. Esq. p. 50. 



Hob. Philippines, Verreaitx. 



2. PTEROPUS. 



Head elongate ; face produced, broad. Ears largo, produced, 

 acute. Fur soft, of the back adpresscd, of the underside more 

 spreading, fuller. "VVings from the sides of the back. Back, shoul- 

 ders, part of the forearm, and the thighs hairy. Thumb, lower 

 joint short, the upper longer ; the lower joint and the base of the 

 upper are enclosed in the front membrane, the rest free. Tail none. 

 Interfcmoral membrano moderate, margining the legs and thighs. 

 The gland of the penis armed with a broad bone. 



Tteropus, sp., lirisson, Geoff., Gray, Peters. Acerodon, Jourdan, 

 Ann. Sci. Nat. viii. p. 3715. 



The wings are generally from the sides of the back; in some species 

 they arc extended backwards so as to bo attached to the sides of the 

 middle of the back ; but in some stuffed specimens the manner in 

 which they are attached is not easily determined, as the skin of the 

 back appears sometimes to be stretched in width. If one had 

 living specimens to examine and could observe their habits, I have 

 no doubt that those with the wings from near the centre of the back 

 would have some habit different from those that have them affixed 

 to the sides of the body ; but our system cannot go further than the 

 specimens at our command admit. 



The species may be thus divided : — 



I. Tho nape and the back of the neck yellow or red, forming a 

 bright tippet. 



* Orbits paler. No. 1. 



** Orbits like back. Sizo large. Nos. 2-7. 

 *** Orbits like back. Size small. Nos. 8-21. 



II. Nape like back ; shoulders with a tuft on each. No. 22. 



III. The nape and back of the neck like the rest of the body, or 

 only whiter. 



* Face uniform. Nos. 23-27. 



** Face with brown streaks. No. 28. 

 *** Face with white streaks. No. 29. 



