BIBLIOGRAPHY OP 



Page. 



Plate. 



Fig 



Page 

 of tr. 



Name. 



Locality. 









3eme Sous-genrc Aximedia. 





30 







23 



elliptica Raf. 



Louisville, Maysville. 



30 



LXXX 



11-13 



24 



levigata Rof. 



Kentucky river. 



31 







24 



zonalis Raf. 

 4cme Sous-genre Eurynia. 



Ohio river. 



31 







25 



dilatata Raf. 





31 



LXXX 



14-15 



25 



latissima Raf. 





32 







26 



solenoides Raf. 

 (3) U. cylindrica S. 



2eme Genre I.AMPSII.IS. 



Ohio river. 



32 



LXXX 



16-19 



27 



cardium Raf. 





32 







27 



ovata Say. 





33 







28 



fasciola Raf. 



Kentucky. 



33 







28 



rosea Raf. 



Hudson river. 



33 







28 



pallida Raf. 

 3^'"« Genre METAPTERA. 



Hudson river. 



34 



LXXX 



20-22 



29 



megaptera Raf. 



Ohio river. 



34 







30 



ochraceus Say (no des.) 





34 







30 



cariosus Say (no des.) 

 4«-« Genre TRUNCII.I.A. 





34 



LXXXI 



1-4 



31 



triqueter Raf. 



Ohio river. 



35 







31 



truncata Raf. 

 5^°^« Genre OBLIQUARIA. 

 l"-" Sous-genre Plagiola. 





36 







33 



decorticata Raf. 



Ohio river, Mississippi. 



36 







33 



interrupta Raf. 



Ohio river, Kentucky. 



36 



LXXXI 



5-7 



34 



depressa Raf. 



Evansville, Indiana. 



37 







35 



lineolata Raf. 

 2«"<= Sous-genre Ellipsaria. 



Ohio river. 



37 







35 



ellipsaria Raf 



Kentucky river. 



37 







36 



fasciolaris Raf. 



Ohio river, &c. 



38 



LXXXI 



10-12 



37 



verrucosa Raf. 



Ohio river. 



38 



LXXXI 



8-9 



37 



cuprea Raf 



Monongaliela, Potomac. 



39 







38 



attenuata Raf. 

 3eme Sous-geure Quadrula. 



Hudson river. 



39 



LXXXI 



13-14 



38 



flava Raf 



Kentucky, &c. 



39 







39 



cyphya Raf 



Ohio river. 



39 



LXXXI 



15-16 



39 



nietanevra Raf. 



Kentucky. 



40 







40 



reflexa Raf. 



Kentucky river. 



40 



LXXXI 



19-20 



41 



retusa Raf. 



Ohio and Kentucky riv. 



40 







41 



flexuosa Raf 



Kentucky river. 



41 



LXXXI 



17-18 



42 



nodulata Raf. 



Kentucky river. 



41 







42 



quadrula Raf. 



Ohio river. 



41 







43 



bullata Raf. 

 4™<= Sous-genre Rotundaria. 



Ohio river. 



42 







44 



tuberculata Raf. 



Ohio river, &c. 



42 



LXXXI 



21-23 



44 



subrotunda Raf. 



Ohio river, &c. 



42 







45 



pusilla Raf. 



Ohio river. 



