EXPLANATION OF THE PLATES. 527 



PLATE VIII. 



NaticidcB. 



Page 



1. Natica canrena, L sp. f . CMna 235 



2. [Globulus) sigaretina, Lam. |. Eocene, Paris 236 



3. [Cernina) fluctuata, Sby. \. Pliilippines 236 



4. Sigaretus haliotoides, L. sp. f . W. Indies 236 



6. — {Naticina) papilla, Chemn, sp. Africa 236 



6. Lamellaria perspicua, Mont. Mediterranean 237 



7. Velutina laevigata, L. sp. Britain 237 



8. Narica cancellata, Chemn. sp. Pacific 237 



9. Neritopsis radula, L. sp. Sandwich Islands 261 



Fyramidellidce. 



10. Pyramidella auris-cati, Chem. sp. Mauritius 238 



11. {Obeliscus) dolabrata, Gmel. sp. "W. Indies .... 238 



12. Odostomia plicata, Mont. sp. A. Britain 239 



13. Chemnitzia elegantissima, Mont. sp. 1.. "Weymouth. 239 



14. Eulima polita, L. Britain 240 



15. StiHfer astericola, Brod. Philippines 241 



Cerithiadce. 



16. 16*. Cerithium nodulosum, Brug. |. Moluccas 242 



17. {Bittium) reticvdatum, Da Costa. Britain .... 242 



18. Triforis perversum, L. sp. Mediterranean 242 



19. Potamides mixtus, Defr. Eocene, Paris 243 



20. {Fyrazus) palustris, Brug. \. India 243 



21. ■ [Terebralia) telescopium, Brug. \. India 243 



22. {Firenella) mammillatus, Eisso. sp. Mediterranean 243 



23. {Lampania) zonalis. Lam. Chusan 244 



24. {Cerithidea) decollatus, L. sp. Cape 243 



Melaniad(B. 



25. 25*. Melania amarula, L. sp. f. Madagascar 246 



26. [Melanatria) fluminea, Gm. sp. \. Madagascar 247 



27. {Melafusus) fluviatihs. Say. f . TJ. States 247 



28. (Anculotus) prsemorsa. Say. TJ. States 247 



29. ■ ( Vibex) fuscata, Gm. sp. Africa 247 



30. Melanopsis costata, Eer. Syria 248 



31. {Pirena) atra. L. sp. |. Ceylon 2i8 



