DESCRIPTION OF THE PLATES. 
Fig. 8. Another fossil shell, of an unknown genus ; possessing characters both of nautilus and 
ammonites. 
9. Another fossil shell, somewhat resembling the preceding. 
10. A specimen of Scapkiles from Dorsetshire. 
11. A specimen of Scaphites from Sussex. 
12. The cast of a species of Turrilites from France. Note. Small casts of these shells are 
also found in Dorsetshire. 
13. Nummulites Icevigata. 
14. A specimen, showing the internal structure of a nummulite. 
15. A specimen, showing the mode in which the septa proceed from the plates. 
16. A perpendicular section of the same species. 
17. The internal structure of another species. 
18. A perpendicular section of the preceding species, 
19. A specimen, in which a separation is observable in the centre. This, however, is 
probably accidental. 
20. An undescribed species of nummuliti e. 
21. A perpendicular section of N. complanata. 
22 . 
23. 
24. j> Different undescribed species of Nummulitce. 
25. 
26. i 
27. The external part of Nummulites complanata. 
28. A fossil, Fasciolites, not hitherto described. 
29. One of the ends of the above fossil magnified. 
30. The outer surface magnified. 
31. An horizontal section of this fossil magnified. 
PLATE XI. 
Fig. 1. Discorbis vesicularis. 
2. The inferior surface of Rotalites trocliidiformis. 
3. The superior surface of R. discorbula. 
4. Lenticulina rotulata. 
5. Lituolites nautiloidea. 
6. Lituolites difformis. 
7 - The internal structure of L. difformis. 
