155 



Unio ovatm Say. Ohio river. 



Unio parvus Barnes. Ohio river; Wabash river. Probably over a great 



portion of the state. 

 Unio perplexm Lea. Wabash and Ohio rivers. 

 Unio personatm Say. Wabash river. 

 Unio phaseolus Barnes. Wabash, White and Ohio rivers. 

 Unio iMllipsii Conrad. Ohio and Wabash rivers. 



= Unio perple.rus Lea. 

 Unio plenus Lea. Wabash and Ohio rivers. 

 Unio plicatus Lesueur. Ohio river. 

 Unio pileus Lea. Ohio river. 



= Unio personatm Say 

 Unio pressus Lea. Lakes in northern Indiana ; Canal at Indianapolis ; 



Ohio river. 

 Unio puslulatus Lea. Ohio river. 

 Unio pustulosus Lea. Wabash and Ohio rivers. 

 Unio pyramidatus Lea. Ohio and Wabash rivers. 



Unio rangianm Lea. Ohio and White rivers; Wild Cat creek, Carroll 

 county. 



= Unio perplexux Lea. 

 Unio rectus Lamarck. Ohio and Wabash rivers. 

 Unio retusus Lamarck. Ohio and Wabash rivers. 



Unio ruhiginosus Lea. Lakes in northern Indiana; Ohio and White rivers. 

 Unio sampsonii Lea. Wabash river. 



= Unio perplexus Lea. 

 Unio securis Lea. Ohio and Wabash rivers. 

 Unio solidus Lea. Wabash and Ohio rivers. 

 Unio S2Mtidatus Lea. Lakes in northern Indiana. 

 Unio siibovatus Lea. Ohio and White rivers. 

 Unio sid)rostratus Say. South Bend ; Wabash river. 

 Unio subrotundus Lea. Ohio river. • 



Unio sulcatus Lea. Wabash and Ohio rivers. 

 Unio tenuissimus Lea. Ohio river. 

 Unio triangularis Barnes. White and Ohio rivers. 

 Unio trigonus Lea. Ohio river, Wabash river. 

 Unio tubercidatus Barnes. AVhite, Wabash and Ohio rivers. 

 Unio undulatus Barnes. Wabash and Ohio rivers. 



