Procekdings Rochester Academv of Science, Vol. 2. 



Plate 2. 



Molluscaof Monroe County 



9 



10 

 1 1 

 12 



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 14 



15 

 16 



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Bythinia tentaculata, Lin. 

 Gillia altilis, Lea. 

 Amnicola limosa, Say. 



" porata, Say. 



" orbiculata, Lea. 

 pallida, Hald. 



" granum, Say. 

 Pomatiopsis lustrica, Say. 

 Valvata tricarinata, Say. 



" sincera, Say. 



Vitrina limpida, Gld. 



Ferussacia subcylindrica, Lin. 



Succinea ovalis, Gld. 



aurea, Lea. 



" avara, Say. 



" obliqua, Say. 



" Totteniana, Lea. 



