PLATE LIII. 



BOLIVINA. 



Diam. Page 



Figure 1. — Bolivina beyrichi, Eeuss, . . x 50 422 



Lateral aspect. 



„ 2-4. — Bolivina beyrichi, var. alata, Seguenza, . . . 422 



Fig. 2. Lateral aspect, . . x 50 



Figs. 3, 4. Lateral aspect ; b, oral aspect, . x 60 



,, 5,6. — Bolivina ■ pygmcea, Brady, . . x 60 421 



Figs. 5, 6. Lateral aspect ; b, oral aspect. 



,, 7-9. — Bolivina robusta, Brady, .... 



Figs. 7, 8, 9. Lateral aspects ; b, oral aspect. 



,, 10, 11. — Bolivina cenariensis, Costa, sp., 



Figs. 10, 11. Lateral aspect ; b, oral aspect. 



,, 12, 13. — Bolivina decussata, Brady, 



Figs. 12, 13. Lateral aspect; b, oral aspect. 



,, 14, 15. — Bolivina nobilis, Hantken, 



Figs. 14, 15. Lateral aspect ; b, oral aspect. 



,, 16-18. — Bolivina hantkeniana, Brady, .... 424 



Figs. 16, 17. Lateral aspect ; b, oral aspect, 

 Fig. 18. Lateral aspect, 



,, 19-21. — Bolivina, karreriana, Brady, 



Figs. 19, 20, 21. Lateral aspects; b, oral aspect. 



„ 22, 23. — Bolivina lobata, Brady, 



Figs. 22, 23. Lateral aspect ; h, oral aspect. 



,, 24, 25. — Bolivina schuugeriana, Brady, 



Figs. 24, 25. Lateral aspect ; b, oral aspect. 



,, 26, 27. — Bolivina costata, d'Orbigny, 



Figs. 26, 27. Lateral aspect ; b, oral aspect. 



,, 28, 29. — Bolivina amygdalcpformis, Brady, 



Figs. 28, 29. Lateral aspect ; b. oral aspect. 



,, 30, 31. — Bolivina reticulata, Hantken, 



Fig3. 30, 31. Lateral aspect ; b, oral aspect. 



,, 32, 33. — Bolivina subangularis, Brady, 



Figs. 32, 33. Lateral aspect ; b, oral aspect. 



