SYSTEMATIC K.DEX. 



7. Helix arbustoruni. Single-banded Snail, 



8. Helix hortensis. Garden Snail, 



A. H. hortensis fasciata, - 



B. H. hortensis unicolor, 



C. H. hortensis arenicola, 



9. Helix caperata. "Wriukled Snail, 



10. Helix hispida. Bristly Snail, 



11. Helix Trochulus. Pyramidal Snail, 



12. Helix lamellata. Lamellate Snail, 



13. Helix aculeata. Prickly Snail, 



14. Helix pulchella. Little '"White Snail, 



4. ZONITES. ZOXE-SXAIL, 



15 Zonites rotundatus. Radiated Zone-Snail, 



16. Zonites pygmseus. Pigmy Zone-Snail, 



17. Zonites eellarius. Cellar Zone-Snail, 



18. Zonites nitidulus. Nitidulous Zone-Snail, 



19. Zoniies lucidus. Lucid Zone-Snail, 



20. Zonites alliaiius. Garlic-scented Zone-Snail, 



21. Zoniies radiaiulus. Minute Striated Zone-Snail 



22. Zonites purus. Clear Zone-Snail, 



23. Zonites crystallinus. Crystalline Zone-Snail, 



24. Zonites fuscus. Membranous Zone-Snail, 



5. VlTRIXA. GLASSY-SXAIL, 



25. Vitrina pellucida. Green Glassy-Snail, 



6. Scccixea. Amber-Sxail, . 



26. Succineaputris. Oval Amber-Snail, 



A. S. putris gracilis. Slender, 



7. Bulimus. Bulimus, 



27. Bulimus lubricus. 



28. Bulimus obscurus. 



8. Pupa. Chrysalis-Sxail, 



29. Pupp urn'rvl'cala. 



30. Pupa marginal a. 



■J. Vertigo. "Whorl-Sxail, 



31. Vertigo edentula. 



10. Clausilia. Clausilia, 



32. Clausilia perversa. Dusky Clausilia, . 



11. Balea. Balea, .... 



33. Balea perversa. Reversed Balea, 



SECTION II. AQUATICA, 

 FAMILY III. LIMN.3EIXA, 



12. Limx.eus. Mud-Shell, 



34. Limnaeus pereger. Wandering Mud-shell, 



A. L. pereger ovatus. Ovate, 



B. L. pereger communis. Common, 



C. L. pereger limosus. Brook, 



35. Limnffiiis palusms. Marsh Mud-shell, 



36. Limnceus truncatulus. Little Mud-shell. 



A. L. truncatulus oblongus. Common, 



B. L. truncatulus fossarius. Ditch, 



C. L. truncatulus minutus. Dwarf, 



13. Fhysa. Bubble-Shell, 



Glossy Bulimus, 

 Lustreless Bulimus, 



Umbilicated Chrysalis-Snail, 

 Margined Chrysalis-Snail, 



Toothless "Whorl-Snail, 



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