32 



11. Polygyra monodon Rack, var fraterna Say. 



Rather common. 



12. Polygyra hirsuta Say. Common ; rather rari- 



able in size ; albin specimens were found at 

 different places. 



13. Vallonia pulchella Mull. Rather common. A 



form with milky-white, opaque shell was 

 found at New Philadelphia. 



14. Vallonia excentrica Sterkid. A few specimens in 



drift on the Tuscarawas river. (This is an 

 eastern, and European species.) 



15. Pyramidula solitan'a Say. Rather scarce. 



16. Pyramidula alternata Say. Not verv common ; 



a few reversed specirriens were found. 



17. Pyramidula perspectiva Say. Common. 



18. Pyramidula striatella .-Vnth. Common. 



19. Helicodiscus lineatus Say. Common. 



20. Punctum pygmaeum Drap. Common. 



21. Sphyradium edentulum Drap. (Pupa edentula 



Drap., Vertigo simplex Gould.) Rather 

 scarce. Some specimens are high with the 

 last whorl wider, like some S. " alticolum 

 Ingers., or var. gredleri Clessin. 



22. Strobilops labyrinthicus Say. Not scarce. 



23. Strobilops virgo Pils. Quite rare. On a hill 



(meadow) near New Phila. 

 24 Leucochila tallax Say. Rather scarce. 



25. Bifidaria corticaria Say. Scarce. 



26. Bifidaria armifera Say. Rather common. 



27. Bihdaria contracta Say. Common. 



28. Bifidaria curuidens G\d. Common. Var. gracilis 



Sterki. Scarce; New Phila. 



29. Bifidaria pentodon Say. Not common. Speci- 



mens from damp places are usually low and 

 short ovoid, (f. curta.) 



30. Vertigo gouldii Binn. Rare: Goshen hill. 



31. Vertigo ovata Say. Not very common. 



32. Vertigo ventricosa Mse. Damp places, not rare. 



