PLATE LXXXY. 



Spirillina. 



Figures 1-5. — Spirillina vivipara, Ehrenberg, 



Figs. 1, 2 a, 3-5. Lateral aspect; fig. 2 b, peripheral 

 aspect. 



„ 6, 7. — Spirillina obconica, Brady, 



Figs. 6 a, 7. Superior lateral aspect ; fig. 6 b, inferior 

 aspect ; fig. 6 c, peripheral aspect. 



„ 8-11. — Spirillina incequalis, Brady, 



Fig. 8. Superior aspect ; fig. 9, inferior aspect ; figs. 10, 

 1 1 , peripheral aspect. 



„ 12— 1G. — Spirillina tuberculata, Brady, 



Fig. 1 2. Young specimen, lateral aspect, 



Figs. 13, 15. Adult specimens, lateral aspect, 



Fig 14. Large example. The partially broken shel 



exposing a thread of nearly black drie< 



sarcode, 

 Fig. 16. Peripheral aspect, 



17. — Spirillina limbata, var. denticulata, uov., 



Lateral aspect. 



„ 18-21. — Spirillina limbata, Brady, 



Fig. 18. Lateral aspect; fig. 21, peripheral aspect, 

 Fig. 19. Lateral aspect; fig. 20, peripheral aspect, 



,,22-25. — Spirillina decorata, n. sp., 



Figs. 22-24. Lateral aspect; fig. 25, peripheral 

 aspect. 



Diam. 

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