PLATE LIV. 



Fig. Page. 



1. Natica (Lunatia) catena (Da Costa). Butley. (Harmer Collection) . 681 



2. Ditto. Little Oakley. (Harmer Collection) . . .681 

 8. Ditto. Recent. (Harmer Collection) .... 681 



4. Natica (Lunatia) helicina (Brocchi), Sacco. Italian Pliocene. (Harmer 



Collection) . . . . . .683 



5. Ditto. Walton-on-Naze. (Harmer Collection) . . . 683 



6. Natica (Polinices) triseriata (Say). Recent. (Harmer Collection) . 697 



7. Ditto. Little Oakley. (Harmer Collection) . . . 697 



8. Natica (Lunatia) proxima (S. V. Wood). Little Oakley. (Harmer 



Collection) . . . . . .692 



9. Ditto, var. Woodii, nov. Little Oakley. (Harmer Collection) . 693 



10. Ditto, ditto. Little Oakley. (Harmer Collection) . . 693 



11. Natica (Lunatia) tenuistriata (Dautzenberg and Fischer). Recent. 



(Harmer Collection) . . . . .691 



lb. Ditto, ditto, ditto. ..... 691 



12. Ditto. Bridlington. (York Museum) . . . .691 

 12a?. Ditto, ditto, ditto. . . . . .691 



13. Natica (Lunatia) Gavellii, sp. nov. Thorpe, Suffolk. (Framlingham 



College) . . . . . .695 



14. Natica (Lunatia) varians (Dujardin). Touraine. (Peyrot Collection) . 696 



15. Natica (Lnuafi't) exvarians (Sacco). Little Oakley. (Harmer Collec- 



tion) ....... 689 



1.6. Ditto. Antwerp. (Harmer Collection) . . . . 689 



17. Natica (Lunatia) assimilis, sp. nov. St. Ertli. (British Museum) . 696 



18. Natica (Lunatia) fusca, Blainville. Recent. (Harmer Collection) . 684 



19. Natica (Polinices) lactea, Guilding. St. Erth. (British Museum) . 699 



20. Natica (Lunatia) nana (Moller). Bridlington. (Headley Collection) . 692 



21. Wexfordia Dautzenbergi, sp. nov. Wexford. (Harmer Collection) . 704 



