Proceedings Rochester Academy of Science, Vol. 2. 



Plate i. 



Mollusca of Monroe County. 



I, 2. Pleurocera subulare, Lea. 



3. " subulare var. pallidum, Lea. 



4. " " var. intensum, Lea. 

 5, 6. Goniobasis depygis, Say. 



7. " semicarinata, Say. 



8, 9. *' livescens, Menke. 



10. . " gemma, DeKay. (DeKay's figure) a younj 



subulare. 

 II, 12, 13. Goniobasis virginica. Say. 



• 14, 15. " virginica var. multilineata, Say. 



