THE FAMILIES AND GENERA OP BATS. 51 



Genus PTENOCHIRUS Peters. 



1861. Ptenochirus Peters, Monatsber. k. preuss. Akad. Weissensch. Berlin, 

 p. 707 (jagori, subgenus oiPachysoma = 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. — Pachysoma {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 : 



-23.1.-2345-- .2-2, 1-1 3-3 1-1 OQ 



-2-1-88*6 -6^ * rf C ri' Pm 3^3' m 2^T ^ 



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 i , pm 4 , and 

 m „ 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, natter 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 Mamm., II, p. 274 (ecaudata) . 



1841. Megara 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 Megara.) 

 1878. Megmrops Dobson, Cat. Chir. Brit. Mus., p. 87 (subgenus of Cynop- 

 terus). 

 1899. Megmrops Matschie, Flederm. des Berliner Mus. fur Naturk., p. 79 

 (subgenus of Ptenochirus). 



Type-species. — Megcera ecaudata Temminck. 

 - Geographic distribution. — Sumatra, Borneo. 

 Number of forms. — Only the type-species is known. 



