79 
EXPLANATION OF PLATE I. 
1. Ostrea lusitanica , natural size), 
2. Pecten scabriusculus, A. Bell, (X 5) 
3. P. polymorphus, Bronn 
4. P. testa, Biv, (X 4) 
5. Cardium incequalis , A. Bell, (X 4) 
6 C. strigilliferum, S. W., (X 4) 
7. Astarte pygmoea, Miinst., (X 4) 
8. Lutraria rugosa , Chem. 
9. Gastrar.a fragilis, L. 
10. Donax vittcitus, Da C., var. nitidus, Jeff., (x 2) 
11. Dentalium candidum , Jeff., (X 3) 
12. D. panormum,} Chem., (X 3) 
13. 13a. Chiton si cuius , Gray, (X 3) 
14. 14a. Otina otis, Turton, (X 6) 
lo Trochus exasperatus, Pult., (x 2) 
16. 16a. Cyclostrema elegantula, Phil., (x 6) 
17. Barleeia cingulata , A. Bell, ( X 4) 
18. Hydrobia compactilis, A. Bell, (X 4) . . 
19. Rissoa striatula, Mont., (X 4) 
20. P. Moutagui, Payr., (X 4) 
21. P. cimex, L., (x 4) 
22. P. scutula , A. Bell, (X 4) 
23. P. bicarinatn , A. Bell, (X 4) .. 
24. P. lactea, Mich., (X 4) 
25. P. delicioso , Jeff., (X 4) 
26. P. multistriata, A. Bell, (X 4) 
27a, b, c. Solariella acutangula, A. Bell, ( X 4) 
28a, b, c. P. approximata , A. Bell, (X 4) 
29. Scalaria foliacea, J. Sow., (X 4) 
30. Aclis unica, Mont., (X 4) 
31. Sphenotrochus selseyensis, A. Bell, (x 4) 
32. Micropora regularis, d’Orb. 
32a. The same specimen magnified. 
33. Diastopora regularise’Orb.,wav.selseyensis, A. Bell 
33a. The same specimen magnified. 
“Mud-deposit,” Selsey. 
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I/UU-' . 
1 JUL.95 
(York Museum). 
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