NORTH AMERICAN CONCHOLOGY. 



229 



Pat,'e. 



Name. 



Locality, 



2o8 



Sphasrium gracile. 



Cyclas gracilis Prime. 



Ohio river. 



268 



aureum. 



Cyclas aurea Prime. 



Lake Superior. 



268 



flavum. 



Cyclas flava Prime. 



Lake Superior. 



268 



securis. 



Cyclas securis Prime. 



Massacliusetts. 



269 



albulum. 



Cyclas albula Prime. 



Lake Superior. 



269 



solidulum. 



Cyclas solidula Prime. 



Ohio river. 



269 



fabale. 



Cyclas fahalls Prime. 



Lake Superior. 



269 



mirabile. 



Cyclas mirahilis Prime. 



Georgia. 



269 



elevatum. 



Cyclas elevata Hald. 



New Orleans. 



270 



elegans. 



Cyclas elegans Ad. 



North America. 



270 



Jayense (Jayanum). 



Cyclas Jayeiisis Prime. 



Lake Superior. 



270 



rosaceum. 



Cyclas rosacea Prime. 



Pennsylvania. 



270 



inornatum. 



Cyclas inornata Prime. 



Illinois. 



270 



modestum. 



Cyclas modesta Prime. 



Pennsylvania. 



270 



castaneum. 



Cyclas castanea Prime. 



Wabash river. 



271 



Bimplez:. 



Cyclas simplex Prime. 



Illinois. 



271 



patella. 



Cyclas patella Gould. 





271 



acuminatum. 



Cyclas acuminata Prime. 



Lake Superior. 



271 



distortum. 



Cyclas distorta Prime. 



Ohio river. 



271 



nitidum. 



Cyclas nitida Migh. & Ad. 



North America. 



272 



detruncatum. 



Cyrlas di-trnncata Prime. 



Pennsylvania. 



273 



Cyclas orbicularis Linsley. 



North America. 



273 



truncata Linsley. 



North America. 



