84 Miller — Twelve Neiv Genera of Bats. 



Macroderma gen. iiov. {Megadermidse). 



Type. — Megaiierma gigax Dobson. 



Cfiaracters.—DiSering from Mer/ddeniia and Li/nnhrina in the al)sence of 

 the small ui)per premolar (pm^), in tlie peculiar character of the interorbital 

 expansion, the development of which is intermediate between that iii the 

 Asiatic and African members of the group, and in the much greater devel- 

 opment of the cartilaginous premaxillaries. 



Species. — Macroderma gigas (Dobson). 



Ardops gen. nov. [Phiiliodouiidx). 



Type. — Slenoderma nichoUsi Thomas. 



Characters. — Like Slenoderma but rostrum not depressed between supra- 

 orbital ridges; anterior nares directed chiefly forward; incisive framina 

 not separated by any appreciable space from roots of incdsors ; supraorbital 

 ridges angled at middle ; inner upper incisor with length of crown nearly 

 equal to height; and m'- and m- without metaconule. 



Species. — Ardops nichoUsl (Thomas), A. m<nilM'rraleii.'<is (Thomas), and A. 

 lucise (Miller). 



Erophylla gen. nov. [PligUostomidic). 



Tape. — Phyllonycleris bonihifrnns Miller. 



Characters. — Like PhyUonycteris but interfemoral membrane extending 

 to short though evident calcar ; noseleaf with i)ointed median' projection ; 

 zygomatic arches complete; and lower molars with distinct cutting edge. 



Species. — Erophiill.ivbumhifnms (Miller), E. plaiiifronx (Miller),/?, sezekoni.l 

 (Gundlach) and E. sunlacristobalensis (Elliot). 



Diaemus gen. nov. {Desmodontidx). 



Type. — Desmodns yoiuujl Jentink.* 



Character-'^. — Like Desmodus, but thumb only about one-eighth as long as 

 third finger, the two pads on its under surface coalesced ; inner lower in- 

 cisor trilobate, with large median lobe, a minute inner lobe near tip and 

 an equally small outer lol)e near base. 



Species. — Dixmus youngi (Jentink). 



Dirias gen. nov. [NuctiUonidiv). 



Type. — NoctUio alljireidrr Spix. 



Characters. — Like NoctUio but with leg and foot less eloiigateci (equal to 

 about 40 per cent of total length) ; m' and m- with very large hypocone 

 connected by a high conspicuous commissure with commissure extending 

 from protocone to metacone. 



Species. — Dirias albiventer (Spix). 



* As represented by a specimen from Roca Nova, Parana, Brazil (No. 140,769, U. S. 

 National Museum ; A. Robert, collector). 



