PLATE IX 



1. Ampullaria. 



2. Ampullina. f : 



3. Turbo picta, with its operculum. 



4. Cirrus acutus, Sowerby. 



5. Aciona scalaria ( ' fVendletrap) , Leach. 



6. Scalaria clatrata. 



7. Trochus crenularis. 



8. . . agglutmans, with and without the adhering substances. 



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



40. . . calcar. 



41. Solarium perspectivum. 

 12. Turrilella. 



