18 



1071 Alasmadonta confragosa, Illinois. 



1072 " rugosa, Ohio. 



1073 " complanata, Kentucky. 



1074 " marginata, Ohio. 



1075 " undulata, New- Jersey. 



1086 Anodonta crassa, 



1085 

 1092 

 1095 

 1097 

 1093 

 1101. a. 



areolatus. 



cygnea, 



fragilis, 



rubens, 



anatina, 



suborbiculata. 



River de la Plata. 



France. 



Ohio. 



Africa. 



Germany. 



Illinois. 



1113 Hyria avicularis, 



1114 " corrugata, 



South America, 

 do. 



1118 Iridina exotica, 



1119 " rubens, 



Rivers of Africa. 

 Nile. 



