EXPLANATION OF PLATES. 341 



Plate V. 



Figure 1. Avion ater, showing the tentacles, eyes, shield, position 

 of the respiratory opening, and slime-gland at the tail. 

 2. Same at rest. 



3. Geomalacus inaculosus (from Brit. Moll. pi. F.F. F*. f. 5). 



4. Limax maximus, showing the position of the respiratory 



opening. 5. Shell or Limacella. 



6. Testacella Haliotidea, showing the labial palps (below the 



tentacles) and the position of the shell. 7. Shell. 

 8. Egg. 



Plate VI. 



Figure 1. Succinea jmtns. 2. Shell. 

 3. Vitrina pellucida. 4. Shell. 



5. Zonites cellarius. 6. Shell. 



7. Helix aspersa. 8. Shell. 



Plate VII. 



Figure 1, Bulimus acidits. 2. Shell of var. injlata. 



3. Pi^a umbilicata. 4. Shell. 6. Natural size. 



6. Vertigo pygmcea, showing the two tentacles. 7. Shell. 



8. Natural size. 

 9. Balia perversa. 10. Shell. 11. Natural size. 

 12. Clausilia laminata. 13. Shell. 14. Clausilium. 

 15. Cochlicopa luhrica. 16. Shell. 17. Natural size. 

 18. Achatina aciciila. 19. Head and tentacles. 20. Shell. 



21. Natural size. 



Plate VIII. 



Figure 1. Carychiufn minimum, showing the position of the eyes. 

 2. Shell. 3. Natural size. 



4. Cyclostoma elegans, showing the snout and position of the 



eyes. 5. Shell. 6. Operculum. 



7. Ac?7ie lineata, showing the position of the tentacles and 



eyes. 8, 9. Shell. 10. Natural size. 11. Operculum 

 magnified. 



THE END. 



