THE NAUTILUS. 77 



Ancylus rivularis Say. In ponds and rivers. 



Physa gyrina Say. In springs and creeks throughout southern 

 Kentucky and at Lexington. 



Physa pomilia Con. In ponds. Not uncommon. 



Physa heterostropha Say. Barren River. 



Physa heterostropha, var. Creeks. 



Campeloma obesum Lewis (?). Barren River. 



Cunipeloma inteyrum Say. Barren River. 



Campeloma ponderosum Say. Common. 



Lioplax subcarinata Say. 



Pomatiopsis lapidaria Say. Bank of Barren River. 



Pleurocera JiJinn Lea. Very common. 



Pleurocera sycamorense Lea. 



Pleurocera undulatum Say. 



Lithasia planispira Anthony. 



Lithasia nuclea Lea. 



Lithasia nndova Anth. 



Lithasia obovata Say. 



Goniobasis cxrcilubris Anth. 



Gomobasis curvilabris, var. Rather common. 



Goniobasis abreviata Lea. 



Goniobasis curreyana Lea. Common. 



Goniobasis costifera Hald. Green and Barren Rivers. 



Goniobasis costifera, var. 



Goniobasis vicina Anth. Warren county. 



Goniobasis atMeta Anth. Barren county. 



Goniobasis depyyis Say. 



Goniobasis nassula Con. var. Indian Creek. 



Goniobasis infantulum Lea. 



Goniobasis saffbrdii Lea. Indian Creek. 



Goniobasis edgariana Lea. Creeks. 



Goniobasis eleganlida Anth. Barren River. 



Goniobasis paupercula Lea. 



UNIONID.E. 



Quadrula undulata Barnes. Common in all streams. 

 Quadrula trigona Lea. Common. 

 Quadrula rubiyinosa Lea. 

 Quadrula pyramidata Lea. 



