Pulmonifera of Jlaine. 53 



The following species of terrestrial and fluviatile mollusca 

 accredited to New England by Stimpson, shells of N". E. 1851, 

 have not as yet been detected in this State. 



GASTEROPODA. 



Triodopsis tridentata, Say. 



" palliata, Say. 



Stenotrema hirsuta, Say. 



Omphalina inornata, Say. 



Omphalina fuliginosa, Griffeth. 



Ventridens suppressa, Say. 



Leucochila fallax, Say. 



" armifera, Say. 



Limnaea appressa, Say. 

 Bulimnea megasoma, Say. 

 Acella gracilis, Say. 

 Ancylus fuscus, Adams. 

 Meiania depygis, Say. 

 Amnicola pallida, Hald. 



