PLATE IX. 



i. AmpUllaria. 



I A^ulUna. d, i^^J 



3. Turbo picla, with its operculum. 



4. Cirrus acutus, Sowerby. 



5. Aciona scahria (tt'endletrap), Leacb. 



6. Scalaria clatrata. 



7. Trochus crenularis. 



S. . . agglutinans, with and without the adhering Substances. 

 9. . . imperator (Impemtor coronatus, Montf.) 



40. calcar. 



41. Solarium perspectivum ■ 

 12. Turriiella. 



13. Cyclostoma mumia. 



14. . . elegans. 



15. Pahidina • fas data (Helix vivipUm, Lin.) 



16. Delphinula. 



17. fermetus, Adans. 



IS. Euomphalus penlangulatus. In , 



19. . catiliul j Sowerby. 



20. Neriia Malaccensis, and its operculum. 



21. NerUina zebra. 



22. Valvata spirorbis, Drap. 



23. Clithon coronala. 

 2A. Ratica. 



25. Monodonia. 



26. Iantliina fragilis. 



