147 



FRKSH WATER lUVALVES. 



Unio abruptus Say. Wabash river. 



Unio orbiculatus Hildreth. 



Unio arquatus Conrad. Wabasli river. 



^Unio rectus Lamarck. Pathologic. 

 Unio capillus Conrad. Wabash river. 



=Unio fabalis Lea. Ohio river 

 Unio cicatricosus Say. Wabash river. 



=Unio yaricosus (?) Lea. 

 Unio cylindricus Say. Wabash river. 

 Unio elegans Lea. Wabash and Ohio rivers. 

 Unio iieros Say. Wabash river. 



=Unio multii'licatu.s Lea. 

 Unio mytiloides Rafinesque. Wabash river. 

 Unio personatus Say. Wabash river. 

 Unio phillipsii Conrad. Wabash river. 

 Unio sampsonii Lea. Wabash river. 



=Unio perplexus Lea. 

 Unio securis Lea. Ohio and Wabash rivers. 

 Unio sulcatus Lea. Wabash and Ohio rivers. 

 Unio undulatus Barnes. Wabash river. 

 Margarita N A confragosa Say. Wabash river. 

 Margaritana dehiscens Say. Wabash river. 



=Unio dehiscens Say. 

 Margaritana monodonta Say. Wabash and Ohio rivers. 



=Unio monodonta Say. From Falls of the .Ohio. 

 Anodonta edentula Say. "Indiana." Locality not given. 

 Anodonta ferruginea Lea. Simon's creek. 

 Anodonta imbecillis Say. Wabash river. 

 Anodonta suborbiculata Say. Ponds near AV abash river. 



A summary of this list of shells originally described from Indiana 

 shows three species of land shells ; twenty-nine species of fresh water 

 univalves; and twenty-one species of Unionidse. While several of these 

 have been relegated to the standing of pure synonyms they yet serve a 

 useful purpose in determining the exact nature of the molluscan fauna. 

 It may be that more extended opportunities in the matter of literature 

 will add to this list other forms, thus]enriching the original contributions 

 of Indiana to conchologic lore. 



