Fig. 



9. Limnaea minima. No. 48, p. 96. 



a. Back view, nat. size. 



b. Front view, magnified. 



c. Back view, ditto. 



10. Limnaea fabulum. No. 44, p. 93. 



a. Front view. 



b. Back view. 



11. Limnaea tenuis. No. 50, p. 97. 



a. Front view. 



b. Back view. 



12. Limnaea ovum? No. 37, p. 89. 



a. Front view. 



b. Back view. 



13. Limnaea arenularia. No. 47, p. 95. 



a. Front view. 

 3. Back view. 



14. Craspedopoma Elizabethae. No. 69, p. 118. 



a. Front view, nat size. 



b. Ditto, magnified. 



c. Impression in the matrix, magnified. 



d. View of the base ditto. 



15. Ancylus? latus. No. 63, p. 110. 



a. Side view, nat. size. 



b. View from above, magnified. 



