24 



smaller, as in S. inermis. The specimen is in the collection of the 

 Rev. F. J. Stainforth. 



4. S. oblita (pi. V. f. 14, 15.) Sowerby Tankerville Catalogue 

 App. p. xviii. 



T. ovali, laevi ; anfractibus angulatis ; sutura varice tumida 

 laevi, impleta, labioexterno vix leflexo, paululum incrassato ; labio 

 interno crasso. 



Oval, smooth ; whorls angulated ; the suture covered by an 

 enamelled tumidity, outer lip scarcely reflected, slightly thickened ; 

 inner lip thick. New Zealand. 



We have had no opportunity of indentifying S. microscopica 

 described by Mr. Gray in the Zoological appendix to Beechey's 

 voyage. 



EXPLANATION OF PLATE V. 



The figures half the natural diayneter. 



10. R. Rectirostrum. 3. 



11. — curta, young. 2. 



APORRHAIS 



1. A. Pes-Carbonis. Sp. 2. 



occidentalis. 3. 



— Pes-Pelecani. 1. 



— , , young. 



ROSTELLLARIA. 



R. Povisii. 4. 



7. — curta. 2. 



8. — Rectirostrum. 3. 



9. — - Curvirostrum. 1. 



STRUTHIOLARIA. 



inermis. 2. 



oblita 



12. 

 13. 

 14. 



15. , var. 



16. — straminea. 1. 



17. — gigas. 3. 



18. — straminea. 1. 



19. — inermis, var. 2. 



20. — straminea, young. 1, 



