TAB. XXXI. 



FIG. 



1. Ammonites Bullatus, D'Orb. Reduced one half. Great Oolite (page 3). 



2. 2 a. Purpuroidea insignis, Lye. An aged shell, in which the tubercles have 



disappeared upon the anterior portion of the 

 last volution. Great Oolite (page 6). 



3. Eulima? laevigata, Lye. Cornbrash (page 13). 



4. Fibula variata, Lye. Specimen with the anterior extremity of the aperture 



approaching to Cerithium. 



4 a. With the anterior part of the aperture approaching to 



Turritella. From the Great Oolite of Kirklington, 

 Oxon. (page 16). 



5. eulimoides, Whiteaves. From the Great Oolite of Stonesfield (page 17). 



6. Amberleya armigera, Lye. Cornbrash (page 20). 



7. Neritopsis Archiaci, D ' Archiac, sp. Cornbrash (page 21). 



7 a. A portion of the surface magnified (page 



21). 



8. Pleurotomaria granulata, Sow., sp. Cornbrash (page 24). 



8 a. A portion of the surface magnified, in- 



cluding the fascia of the sinus. 



9. Acteonina canaliculata, Lye. Great Oolite of Kirklington, Oxon. (page 27). 



9 a. The spire enlarged. 



10. Chemnitzia vittata, Phil., sp. Cornbrash (page 14). 



11. Dentalium entaloides, Desl. Cornbrash (page 28). 



1 1 a. A portion of the posterior part of the shell 



enlarged, to exhibit the oblique striations. 



\\a. Enlarged view of the anterior portion of the shell, 



in which the striations have disappeared. 



12. Nerina3a granulata, Phil., sp. Cornbrash (page 10). 



12. A portion of the spire enlarged. 



13. 13 a. Acteonina Scarburgensis. Cornbrash (page 28). 



14. Monodonta Lycetti, Wldteaves. Bradfordian beds of Islip, Oxon. (page 22). 



15. Nerita involuta, Lye. Great Oolite, Kirklington (page 20). 



16. Acteonina Luidii, Luid., sp. Forest Marble, Kidlington, Oxon. A small speci- 



men, with short spire (page 27). See also 

 Tab. LX1, figs. 18 a, b, c. 



