23. " PuNCTUM " PVGM.^UM Drap. Vt-ry common. 



24. Patula 8TRIAtei;la Anth. Very common in some 



places. 



25. Patula perspectiva Say. Common. 



26. Patula alternata Say. Rather scarce in the 



"bush"; common on the bank at the city. An in- 

 verse specimen has been found. 



27. Patula solitaria Say. Scarce; Blicktown and one 



mile southeast of New Philadelphia. 



28. Vallonia pulchella Muell. Not common. A 



form with milky white, opaque shell has been found 

 in the city. 



29. Vallonia excentrica Sterki. Few specimens in 



drift on the Tuscaravvas river. 



30. PoLYGYRA (Mesodon) albolabris Say. Not com- 



mon, 

 a. var. minor. A peculiar, small, thin-shelled form is 

 found on the bank above the river. 



31. PoLYGYRA THYR0IDE8 Say. Rather common. 



32. PoLYGYRA MULTILINEATA Say. Not common, and 



generally rather small; Blicktown; larger at Still- 

 water. 



33. PoLYGYRA PROFUNDA Say. Scarce; Blicktown, 



Goshen. 



34. POLYGYRA MiTCHELLiANA Lea. Quite scarce; low 



grounds southeast of New Philadelphia. 



35. POLYGYRA PENNSYLVANiCA Green. Scarce; near 



Zoar Station; two miles southeast of the city; vari- 

 able in color. 



36. POLYGYRA (Triodopsis) fallax Say. Not com- 



mon; albin specimens are found occasionally. 

 (This is the species commonly so named.) 



37. POLYGYRA tridentata Say, Common; several 



specimens without any teeth on the peristome were 

 collected, which represent not a variety, but merely 

 a deficient form. 



38. POLYGYRA PALLIATA Say. Scarce. 



39. POLYGYRA INFLECTA Say. Rather scarce. 



40. POLYGYRA (STENOTREMA) MONODON Rack., var* 



•FRATERNA Say. Rather common. 



