PLATE LI. 



BULIMINA. — PlEUROSTOMELLA. 



Figure 1. — Bulimina elongata, d'Orbigny, 



,, 2. — Intermediate specimen, with characters approaching 



those of Bulimina ovata, 



„ 3-5. — Bulimina marginata, d'Orbigny, 



Figs. 3, 4, 5. Lateral aspect ; c, oral aspect. 



„ 6. — Bulimina subornata, Brady, 



Lateral aspects. 



,. 7-9. — Bulimina aculeata, d'Orbigny, 



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



X 80 



x 60 



402 



406 



,, 10-13. — Bulimina inflata, Seguenza, . 



Figs. 10, 11, 12, 13. Lateral aspects; c, oral aspect. 



x 60 



406 



,, 14, 15. — Bulimina rostrata, n. sp., 



Figs. 1-1, 15. Lateral aspects ; c, oral aspeot. 



x 80 



408 



„ 16, 17. — Bulimina williamsoniana, Brady, 



Figs. 16 a, I, 17. Lateral aspects ; c, oral aspect. 



X SO 



408 



,, 18, 19. — Bulimina buchiana, d'Orbigny, 



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



X 80 



407 



20. — Pleurostomella brevis, Schwager, 



a, Peripheral aspect ; b, lateral aspect. 



X 40 



411 



21. — Pleurostomella rapa, Giimbel, 



a, Peripheral aspect; h, lateral aspect. 



x 60 



411 



„ 22, 23. — PleUrostomella alternans, Schwager, 



Fig. --. a, Peripheral aspect ; b, lateral aspect, 

 Fig. 23. a, Peripheral aspect ; b, lateral aspect. 



x 70 

 x 60 



412 



