Descriptions of East Asiatic Mammals Ji 
and Penthetor. The tail is either very short or absent in the 
Pteropodinse ; the claw on the index finger is never lost. In none 
of the genera is the tongue greatly extrusile or the front of the 
lower mandible specially modified. Besides the genera mentioned 
above, others are found in the islands of the Indo- Australian 
Archipelago and in Africa. 
The Rousettes or Russet Flying Foxes, genus Rousettus, 
which include several species, are dull-colored Bats with quite 
short fur, rather long narrow ears, a short tail, and a distinct 
though blunt claw on the index finger. This claw distinguishes 
them from Eonycteris, one of the Long-tongued Fruit Bats, 
with which they may be confused. The wing-span varies from 
12 to 18 inches, the forearm from 2% to 4 inches. Rousettes 
are found from Africa to eastern Asia and New Guinea. We are 
concerned with but two species. 
Geoff roy's Rousette, Rousettus ample xicaudatus, one of the 
smaller species with forearm from 3 to 3% inches in length, is 
colored dark sooty brown on the back and the crown of the head. 
The area of the neck is pale gray. The underparts are gray- 
brown, with the throat and neck grayish white. The species 
occurs throughout the Malay Peninsula, Tenasserim, and Siam. 
Leschenaults' Rousette, Rousettus leschenaulti, is a some- 
what larger species, with the length of the forearm 3% to 3% 
inches. It is slightly paler in color than R. ample xicaudatus, 
though still dark brown, and has similarly a pale collar of very 
short hairs. The underparts are brown, less mixed with gray. 
This Bat occurs through India, Burma, Siam, and Tonkin to 
Fukien in south China. Although there is a related race in 
Java, it appears to be absent from the Malay Peninsula. 
The True Flying Foxes, genus Pteropus, include the major- 
ity of the species contained in the family Pteropodinge. When 
people speak of Flying Foxes of gigantic size, they invariably 
mean some member of this genus. These Fruit Bats can usually 
be recognized at once by the contrasted coloring of the mantle 
