MOLLUSCA OF OHIO. 385 



Campeloma rufum (Haldeman, Paludina). 



Canal at Columbus (Call); Summit and Tuscarawas Coun- 

 ties (St.). Sandusky River (St.). Possibly not distinct 

 from integrum. 

 Lioplax subcarinatus (Say, Paludina). 



Ohio River; Lake Erie, — tributaries? 



strepomatid^; (Pleuroceridae) . 



Pleurocera canaliculatum (Say, Melania). 



Ohio River; Tuscarawas River, rare (St.). 

 Pleurocera elevatum (Sav, Melania). 



"Ohio." 

 Pleurocera undulatum (Say, Melania), = monilijerum Lea? 



Ohio River. 

 Pleurocera neglectum, Anthony. 



Ohio River at Cincinnati; Great Miami River, Ohio Canal at 

 Circleville (Walker). 

 Pleurocera labiatum Lea ( = var. of neglectum ?) . 



Cincinnati; Scioto River. 

 Pleurocera conicum (Say, Melania). 



Cincinnati. 

 Pleurocera subulare (Lea, Melania). 



Lake Erie, common. 



Other psecies listed from Ohio: 



Pleurocera ellipticum Anthony. 



Pleurocera pallidum Lea. 



Pleurocera simplex Say. 



Pleurocera troostii Lea. 

 Goniobasis livescens (Menke, Melania). 



Over the state, common and variable. 

 Goniobasis livescens depygis Say. 



Over the state. Seems inseparably connected with livescens, 

 although extreme forms of the two are very different ; 

 e. g. in the Tuscarawas River all possible intermediate 

 forms are found together — abundant. 

 Goniobasis semicarinata (Say, Melania). 



Cincinnati; Rocky River (Allen). 

 Goniobasis vicina Anthonv. 



"Ohio" (Walker.) 

 Goniobasis pulchella Anthony. 



Cincinnati; Little Miami River (Walker). 

 Goniobasis gracilior Anthony. 



Kent, Portage Co., Springfield Lake (Walker); Ohio Canal 

 and Tuscarawas River at New Philadelphia (St., t. 

 Simpson). 

 Goniobasis elata Anthony. 



Elyria, Vermilion River (Walker). 



