THE FAMILIES AND GEN EE A OF BATS. 
51 
Genus PTENOCHIRUS Peters. 
1861. Ptenochirus Peters, Monatsber. k. preuss. Akad. Weissensch. Berlin, 
p. 707 ( jagori , subgenus of P achy soma = Cynopterus ) . 
1878. Ptenochirus Dobson, Catal. Chiropt. Brit. Mus., p. 81 (subgenus of 
Cynopterus ) . 
1899. Ptenochirus Matschie, Flederm. des Berliner Mus. fur Naturk., p. 77 
(part, subgenus). 
Type- species. — P achy soma ( Ptenochirus ) jagori Peters. 
■Geographic distribution. — Philippines, Borneo. 
Number of forms. — Two species of Ptenochirus are now known. 
Characters. — External and cranial characters like Cynopterus (tail 
and calcar present) . Dental formula : 
- 2 3 . 1 .- 2345 — ^. 2 - 2 , 
- 2 - 1 .- 23456 -*' 1-1 
c 
1-1 
1 - 1 ’ 
3-3 
m 
1-1 
2-2 
= 28 . 
Upper incisors smaller and more pointed than those of Cynopterus , 
distinctly though narrowly separated from each other, the outer 
tooth of each pair scarcely more than half as long as inner; lower 
incisor smaller than the corresponding tooth (i 2 ) in Cynopterus , 
nearly terete (not widened antero-posteriorly) . Canines as in 
Cynopterus , but without secondary cusps. Cheek teeth differing 
from those of Cynopterus in a general widening and flattening of the 
crowns, the outline of which becomes subquadrate in pm 4 , pm 4 , and 
m 15 and the less distinctness of the median furrow encroached upon 
by the thickened inner ridge. 
Species examined. — Ptenochirus lucasi Dobson, P. jagori Peters. 
Remarks. — This genus differs from Cynopterus in the absence of 
the inner pair of lower incisors, the reduction in size of the outer 
upper incisors, and in the broader, flatter molariform teeth. The 
last, character suggests Thoopterus , but is less pronounced and the 
teeth are not increased in size. 
Genus MEG^EROPS Peters. 
1841. Megera Temminck, Monogr. de Manfm., II, p. 274 ( ecaudata ). 
1841. Megcera Temminck, Monogr. de Mamm., II, p. 359 ( ecaudata ) ; not of 
Wagler, 1830, or of Robineau-Devoidy, 1830. 
1865. Megcerops Peters, Monatsber. k. preuss. Akad. Wissensch. Berlin, p. 
256. (Substitute for Megcera.) 
1878. Megcerops Dobson, Cat. Chir. Brit. Mus., p. 87 (subgenus of Cynop- 
terus). 
1899. Megcerops Matschie, Flederm. des Berliner Mus. fiir Naturk., p. 79 
(subgenus of Ptenochirus ) . 
Type-species. — Megcera ecaudata Temminck. 
Geographic distribution. — Sumatra, Borneo. 
Number of forms. — Only the type-species is known. 
