15-2 



Pleurocera simplex Lea. Ohio river. 



Pleurocera troostii Lea. New Harmony, Wabash river. 

 This species was based upon specimens submitted to Dr. Lea from very 

 widely separated localities. The greater number came from North 

 Alabama and Georgia. There is very much doubt that this species 

 was found in the northern locality to which it is credited. 



Pleurocera undulatum Say. Ohio river, 



FRESH WATER BIVALVES. 



Pisidium abditmn Haldeman. Ohio river. Probably generally distributed 

 over the state. 



Pisidium virginicum Bourgiuignat. Ohio river. 



Sphaerium solidulum Prime. Franklin county. 



Sphaeriiun sphaericum Anthony. Ponds along Wabash river. 



Sphaerium stamineum Conrad. Ohio river. 



Sphaerium sulcatum Lamarck. Ohio river. 



Sphaerium transversum Say. Ohio and Wabash rivers. 



Anodonta decora Lea. Ohio river. 



Anodonta edenhda Say. Wabash, White and Ohio rivers; lakes in northern 

 Indiana. 



Anodonta ferruginea Lea. Simon's creek. 



Anodonta ferussaciana Lea. Ohio river; I>akes in northern Indiana. 



Anodonta footiana Lea. South Bend. 



Anodonta grandis Say. Flat Rock creek ; Wabash river. Probably distrib- 

 uted all over the state. 



Anodonta imbeciUis Say. Wabash and Ohio rivers ; Canal at Indianapolis. 



Anodonta pavonia Lea. Flat Rock creek. 



Anodonta plana Lea. Ohio river; Flat Rock creek. 



Anodonta salmonia Lea. Blue river. 



Anodonta shiefferiana Lea. Flat Rock creek. 



Anodonta suvcylindracea Lea. White river. 



Anodonta suborbiculata Say. Ponds near Wabash river. 



Anodonta ivardiana Lea. White river. 



Margaritana calceola Lea. Ohio river ; Flat Rock creek. 

 =Margaritana deltoidea Lea. 



Margaritana complanata Barnes. Ohio and White rivers. 



Margaritana confragosa Say. Ohio and Wabash rivers. 



