Descriptions of East Asiatic Mammals 73 
species live on the Asiatic mainland; the greatest number of 
species occur through the Indo-Australian region. 
Lyle's Flying Fox, Pteropus lylei, and the forms following 
are members of a section of Pteropus called the P. vampyrns 
group. These are medium-sized to very large Flying Foxes, with 
the forearms measuring from 6 to nearly 9 inches. The general 
color of the back is very dark brown, the mantle (the area of the 
shoulders and base of the neck) buffy. The group includes five 
species. 
Pteropus lylei of Siam and Cochin-China, one of the smaller 
species, has the forearm 6 inches in length. The back is colored 
seal-brown, the underparts blackish seal-brown, the mantle red- 
dish buff, the top of the head nearly as the mantle. 
The Intermediate Flying Fox, Pteropus intermedins, 
though closely related to Lyle's Flying Fox, is distinctly larger. 
The length of the forearm is a little more than 7 inches. The 
body color is seal-brown as in P. lylei but the mantle is yellow- 
ish buff and the crown russet. This Bat occurs in Tenasserim 
and peninsular Siam, generally southwest of the range of 
P. lylei. 
The Assam Flying Fox, Pteropus giganteus leucocephaius, 
a race of the Indian Flying Fox, is found in Assam and among 
the foothills of the Himalayas. It is somewhat long-furred, and 
the forearm measures from 6% to 7 inches. The color is black- 
ish brown, scantily sprinkled with grayish white hairs, the 
underparts paler than the back, the mantle varying from golden 
buff to tawny. 
The Sunda Islands Flying Fox, Pteropus vampyrus, di- 
vides into a number of geographical races, one of which, P. v. 
malaccensis, is found from the central and lower part of the 
Malay Peninsula to Cochin-China and Annam. This large-sized 
race, with forearm from 7% to 8% inches long, has the back 
grayish brown or russet-brown, with the rump sometimes 
touched with chestnut ; the mantle varies from reddish orange to 
