Proceedings Rochester Academy of Science, Vol. 2. 



I 



2 



3,4 



5 

 6 



7,8 

 9 



TO, I I 



12, 13 



14, 15: 

 16 



17 



18-21 

 22 



Plate 6. 



Mollusca of Monroe County. 



Limnaea elodes, Say. Say's figure, after Binney. 

 Say. 



" columella. Say. 



" umbrosa. Say. 



" reflexa, Say. Say's figure, after Binney. 



" desidiosa. Say. 



" stagnalis, Lin. 



" catascopium, Say. 



" pallida. Ad. 

 Physa heterostropha. Say. 



" gyrina, Say. 



" " var. Hildrethiana, Lea. Lea's figure, after 



Binney. 

 Physa ancillaria, Say. 

 Bulimus hypnorum, Lin. 



