Vol. XIX pp. 83-86 June 4, 1906 



PROCEEDINGS 



OK THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



TWELVE NEW GENERA OF BATS. 



BY GERRIT S. MILLER, Jr. 



By permission of the Secretary of the Smithsonian Institution 



Having recently examincfl some of the more important Eu- 

 ropean collections of Chiroptem in connection Avith the material 

 in the United States National Museum, I find that the following 

 genera have not hitherto been described. 



Niadius gen. nov. {Pteropidse). 



Tijpe. — Cjino/ilcrus privc('j>s M'lWer. 



Cluiracters.— Like Cynopterus bat with the larger cheek-teeth broader and 

 more squarish in outline ; crown of pm j and niy with distinct terete cusp 

 slightly in front of middle of crushing surface. 



Species. — Niadius princeps ( Miller ) . 



Remarks. — In the increased size of the larger cheek-teeth this genus ap- 

 proaches Thoopterus ; but the terete cusp in pm^j and m f differs conspicuously 

 from the ridge which occupies somewhat the same position in the related 

 group, 



Sphserias gen. nov. {Pteropidse). 



Type. — Cynopterus hlanfordl Thomas. 



Characters. — Like Cynopterus but without calcar and external tail; inci- 

 sors more developed than in any of the related genera, the series of the 

 lower jaw forming four conspicuous serrations when viewed from in front, 

 those of the u]iper jaw with sharp-edged crown well differentiated from 

 shaft and provided with a large main cusp near middle. 



Species. — Sphserias blanfordi (Thomas). 



Remarks.— This genus was included in Thoopterus by Matschie * but it is 

 readily distinguishaljle by the small (normal) cheek-teeth, the absence of 

 the calcar and external tail, and the very peculiar, trenchant form of the 

 incisors. 



*Flederm. des Berl. Mus. fur Naturk., p. 77, 1899. 



18— Proc. Biol. Soc. Wash., Vol. XIX,-1906. (83) 



