146 



BULLETIN OK THE BUREAU OF FISHERIES. 



m 



u 



Fig. 10. — Glochidia of common fresh-water mussels. (After Surber. 1912 and 1915.) 



a, Lampsilis Iris. 



b, Lam p silts lienosa unicostata. 



c, L.atnpsUis ligamentina. 

 d, L-ampsilis Ivieola. 



e, LaniPsilis viultiradiata. 



/, LamPsilis parza. 1 



(7, LamPsilis picta. 



k. Lam psitis recta. 

 i, LampsUis stibTostrata. 

 j, LamPsilis tr ah alts, 

 k, LampsUis vcnlricosa. 

 I. LamPsilis ventricosa salura. 

 VI, Marijarttaiia monodonta. 

 n, ObltQuaria refiexa. 



o, Obovaria circulus. 



p. Obovaria ellipsis. 



q, Obovaria reiusa. 



r, Plaoiola donaciformis. 



s, Plagiola elegans. 



t. Plagiola securti. 



u. Pleurobema cesopus. 



