PLATE LII. 



VlRGULINA. — PLEUROSTOMELLA. — BOLIVINA. 



Diam. Page 



Figures 1-3. — Virgulina schreibersiana, Czjzek, . x 70 414 



Figs. 1, 2, 3, Lateral aspects; c, oral aspect. 



„ 4,5. — Virgulina pauciloculata, n. sp., . . x 80 414 



a, b, Lateral aspects ; c, oral aspect. 



,, G. — Virgulina texturata, n. sp., . . x 40 415 



a, Lateral aspect ; b, peripheral aspect. 



,, 7-11. — Virgulina subsquamosa, -Egger, .... 415 



Figs. 7-9. Various lateral aspects ; c, oral aspect, . x 50 



Figs. 10, 11. Various lateral aspects, . x 70 



„ 12, 13. — Pleurostomella subnodosa, Reuss, . . x 50 412 



Figs. 12, 13. Lateral aspects; c, oral aspect. 



,, 14-17. — Virgulina subdepressa, n. sp., . . x 40 416 



Various lateral aspects. 



„ 18, 19. — Bolivina punctata, d'Orbigny, . . x 60 417 



Figs. 18, 19. Lateral aspect ; c, oral aspect. 



„ 20, 21. — Bolivina dilatata, Reuss, . . x 70 418 



Figs. 20, 21. Lateral aspect; c, oral aspect. 



22. — Bolivina porrecta, Brady, .. . . x 50 418 



a, b, Lateral aspects ; c, oral aspect. 



„ 23-25. — Bolivina textilarioides, Reuss, . . x 70 419 



Figs. 23, 24, 25. Lateral aspects; c, oral aspect. 



„ 26-28.— Bolivina limbata, Brady, . . x 50 419 



Figs. 26, 27, 28. Lateral aspects ; r, oral aspect. 



29. — Bolivina tenuis, Brady, . . . x 80 419 



Fig. 29. Lateral aspect ; c, oral aspect. 



30. — Bolivina nitida, n. sp., . . . x 80 420 



Lateral aspects. 



,, 31-34.— Bolivina tortuosa, Brady, . . x 70 420 



Figs. 31, 32, 33, 34. Lateral aspects ; c, c, oral aspect. 



