FRESH-WATER MUSSELS. 



145 



n 



m 



Fig. 9. — Glochidia of conunon fresh-waler mussels. (After Surber, 1913 and 1915.) 



a, Alasmidonta calceota. 



b, Alasmidonta fnarffinata. 

 (, Anodonta corpulcnta. 



d, AyiodontiX granjts. 



c, A nodonta imbcctUis. 



/ .Anodonta stiborbictUata. 



g. Anodontoides ferussacianus 



subcylitulraceus, 

 h, Arcidens confragosus. 

 i, CyProgenia irrorata. 

 j, Dromus dramas. 



k, Lampsilis anodontoides. 

 /, LaviPsilis breiicuius briUsi. 

 m, Lamp silts fallaciosa. 

 n, LamPsilis gracilis. 

 0, LamPsilis higginsii. 



