32 PALUDINIDJS. 



Sub -Genus TULOSTOMA, Haldeinan. 

 Mon. Lymn. Sup. 2, 1841, type P. magnified, Conrad. 



35. Paludina (Tulostoma) magnifica. 



Paludina magnifica, Conrad, New freshwater shells, U. States, June 1834, 

 Alabama Rv. ; = P. bimonilifera, Lea, Trans. Amer. Philos. Soc., 

 August 1834 (.read in 1832). 



2 Alabama ; ex c. Dr. H. Dobrn. 



Sub-Genus CAMPELOMA, Rafinesque. 



Journ. de Physique, fyc., Vol. 88, 1819, type C. crassula, Raf., from Ohio ; 

 = Melantho, Bowditch, Elem. Conch. 1822, type P. decisa, Say. 



36. Paludina (Campeloma) decisa. 



Limnaea decisa, Say, Nicholson's Enc. I, 1817, [sine Hab.~\ ; Delaware Rv. 

 jide Binney. 



7 Indiana ; ex c. Dr. T. Oldham. 

 16 Pennsylvania ; coll. Rev. K. R. Beadle. 



4 Massachusetts and Ohio ; coll. Prof. E. C. Stearns. 



5 New York; coll. Dr. W. Newcomb and ex c. Madras Museum. 



A sinistral variety has been recorded. 



37. Paludina (Campeloma) integra. 



Paludina integra, Say, Journ. Aead. Nat. Sci. Philad. II, 1821, Missouri ; 

 Jide Binney P. decisa, var. 



20 New York ; coll. Dr. W. Newcomb and Rev. E. R. Beadle. 



38. Paludina (Campeloma) ponderosa. 



Paludina ponderosa, Say, Journ. Acad. Sci. Philad. II, 1821, Ohio. 



4 Alabama ; coll. Rev. E. R. Beadle. 

 12 Indiana ; ex c. Dr. T. Oldham. 



39. Paludina (Campeloma) genicula. 



Paludina genicula, Conrad, New freshwater shells, U. States, 1834, " Flint 

 Rv., Georgia ; " Jide Binney = P. decisa, var. 



2 Georgia ; ex c. Dr. T. Oldham. 



40. Paludina (Campeloma) rufa. 



Paludina rufa, Haldeman, Mon. Lymn. Ill, 1841 ; Jide Binney = P. 

 decisa, Say, var. 



2 Erie Canal ; coll. Prof. W. Newcomb. 



