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Margaritana dehiscem Say. Wabash and Ohio rivers. 



Described as Unio dehiscens Say. 

 Margaritana delioidea Lea. Wabash, White and C)hio rivers. 

 Margaritana hildrethiana Lea. Ohio river. 

 Margaritana marginata Say. White river. 

 Margaritana monodonta Say. Falls of the Ohio river ; Wabash river. 



Described as Unio monodontus Say. 

 Margaritana rugosa Barnes. Wabash and Ohio rivers ; Lakes in northern 



Indiana. 

 Unio ahruptus Say. Wabash river. 



= Unio orbiculatus Hildreth. 

 Unio lesopus Green. Ohio river. 

 Unio alatus Say. Ohio, White and Wabash rivers. 

 Unio anodontoides Lea. Ohio and Wabash rivers. 



Described as Unio teres Rafinesque, from the Wabash. 

 Unio arctior Lea. White, Wabash and Ohio rivers. 



= Unio gibbosus Barnes, white nacred variety. 

 Unio arquatus Conrad. AV abash river. 



= Unio rectus Lamarck, pathologic. 

 Unio asperrimus Lea. Wabash and Ohio rivers. 

 Uiiio camelus Lea. Ohio river. 



= Unio phaseolus Barnes. 

 Unio phaseolus Barnes. 

 Unio camptodon Say. Ohio river. 

 Unio capax Green. Ohio river. 

 Unio cicatricosus Say. Wabash river. 



= Unio varicosus Lea. 

 Unio dncinnatiensis Lea. Ohio river. 



=^ Unio perplexus Lea. 

 Unio circulus Lea. Wabash, White and Ohio rivers. 

 Unio dainxs Lamarck. Wabash, White and Ohio rivers. 

 Unio coccineus Lea. Wabash and Ohio rivers. 

 Unio cooperianus Lea. Ohio river. 

 Unio cornutus Barnes. Wabash and Ohio rivers. 

 Unio crassidens Lamarck. Wabash and Ohio rivers. 

 Unio cylindricxis Say. Wabash and Ohio rivers. 

 Unio distans Anthony. St. Joseph river. 



= Unio luteolus Lamarck. 



