PLATE XIIT. 



Fig. 

 1. 



2. 



4. 



5. 



6. 



7. 



8. 



9. 

 10. 

 11. 

 12. 

 13. 

 14. 

 15. 

 16. 

 17. 

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19. 



20. 



Searlesia costlfer (S. V. Wood). Little Oakley. (Harmer Collection) 

 Searlesia incisa, Gould. Recent, Puget Sound. (Harmer Collection) 

 Searlesia costift-r (S. V. Wood). 



var. ^5 J. Sowerby. Little Oakley. (Harmer Collection) 



Little Oakley. (Harmer Collection) 

 Little Oakley. (Harmer Collection) 

 Isle of Man. (Jermyn Street Museum) 

 Pliocene, Iceland. (Morcli Collection) 

 (Harmer Collection) 

 (Harmer Collection) 



var. cancellata, nov 

 var. elovcjata, nov. 

 var. monensis, nov. 

 var. islandica, nov. 

 ditto. Little Oakley, 

 ditto. Little Oakley. 



ditto. Sutton. (Cambridge Museum) 

 var. crassa, nov. Little Oakley. (Harmer Collection) 

 var. imlchra, nov. Little Oakley. (Harmer Collection) 

 Asti/ris rosacea (Gould). Recent, Spitzbergen. (Harmer Collection) 

 Ditto. Little Oakley. (Harmer Collection) 

 Meijeria alia (Jeffreys). Recent, Lofoten Islands. (Harmer Collection) 

 Ditto. Little Oakley. (Harmer Collection) 

 Nassa Kernwdei, Kendall. Isle of Man. (Harmer Collection) 

 Nassit Woodtvardi, sp. nov. Ratliaspic, Ireland. (Jermyn Street 



Museum) ..... 



Nassa consociata, S. V. Wood, var. hrevis, nov. Isle of Man 



(Harmer Collection) .... 



Nassa granulata (J. Sowerby), var. (jravilis, nov. Isle of Man 

 (Harmer Collection) .... 



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57 



57 



135 



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74 



83 



7^ 



11 



