TAB. XL. 



FIG. 



1. Trigonia compta, Lye. Collyweston Slate (page 50). 



2. arata, Lye. Forest Marble (page 52). 



3. ,, Bathonica, Lye. Great Oolite (page 52.) 



4. tripartita, Forbes. Cornbrash (page 51.) 



5. Clythia, D'Orb. Great Oolite. A specimen of advanced growth. 

 5 a. An adult specimen (pages 48 and 51). 



6. ,, tuberculosa, Lye. Great Oolite. Magnified (page 47). 



7. Avicula clathrata, Lye. The smaller valve, magnified. Great Oolite. 

 7 a. The larger valve, magnified (page 36). 



7 b. Portion of the surface magnified. 



8. 8 a. Astarte rustica, Walton, MSS. Great Oolite and Forest Marble (page 76). 



9. Corbicella subangulata, Lye. Forest Marble (page 70). 



10. Astarte ignota, Lye. Forest Marble (page 77). 



11. Pecten personatus, Gold/., var. Great Oolite. Magnified. Part II, page 11. 

 11 a. ,, Another variety, magnified. 



12. Nucula Menkei, Roem., var. Also Tab. XXXIX, fig. 2, page 44. 



13. Astarte Aytonensis, Bean. Great Oolite (page 78). 



14. Pecten subspinosus, Schloth. Forest Marble (page 113). 



15. Cyprina bella, Walton, MSS. Forest Marble (page 71). 

 15 a. -A. shorter specimen. 



16. Pecten rigidus, Sow. Great Oolite (page 31). 



17. Corbis rotunda, Lye. Forest Marble (page 60). 



18. 18 a. Cardium Buckmani. Young specimen. Forest Marble. Part II, page 64. 

 185. ,, The striated surface magnified. 



19. 19 a. Opis Luciensis, If Orb. Great Oolite (page 62). 



20. 20 a. Lucina? Burtonensis, Lye. Forest Marble (page 59). 



21. Gervillia bicostata, Lye. Great Oolite. 



22. Cardium lingulatum, Lye. Also Tab. XXXV, fig. 1 1, page 53. 



23. 23 a. Astarte Bathonica, Lye. Great Oolite (page 76). 



24. Avicula subcostata, Roem. Great Oolite (pages 36, 1 1 1). 



25. Gervillia tortuosa, Sow., var. Cornbrash (page 37). 



26. Astarte flexicostata, Lye. Great Oolite (page 79). 



27. 27 a. Sowerbya Woodwardi, Lye. Left valve. Great Oolite (page 67). 

 27 b, 27 c. Right valve. 



28. 28 a. Corbula Agatha, D'Orb. Forest Marble. Magnified (page 65). 



29. Lithodomus Porteri, Lye. Forest Marble. Magnified (page 114). 



30. Gryphsea minuta, Sow. Great Oolite. Magnified (page 30). 



31. Astarte Pontonis, Lye. Great Oolite. Magnified (page 75). 



32. Lima punctatilla, Lye. Great Oolite. Magnified (page 41). 



33. Astarte orbicularis, Sow. Great Oolite. Magnified (page 73). 



34. 34 a. fimbriata, Walton, MSS. Forest Marble (page 77). 



35. Gervillia Islipensis, Lye. Great Oolite (page 37). 



66. Cardium Witchelli, Lye. Great Oolite. Magnified (page 55). 



