TAB. XL 



Fig. 



1. Avicula media, page 53. 



a, d. right and left valves of an elevated specimen from Brockenhurst. Mus. 



Edwards. 



b, c. specimen from Barton. Mus. Edwards. 



2. Avicula papyracea, p. 54. 



a. view of the interior of a young? specimen from Haverstock Hill. Mus. 



Edwards. 



b, c. adult specimens from Highgate. Mus. Edwards. 



3. Avicula arcuata, p. 53. Mus. Wetherell. 



4. Lima compta, p. 48. Mus. Edwards. 



5. Anomia scabrosa, p. 14. „ 



6. Lima expansa, p. 49. „ 



7. „ soror,j». 49. „ 



8. Pinna arcuata,/?. 5G. Mus. J. Sowerby. 



9. ,, margaritacea, p. 56. Mus. Brit. 

 10. ,, pyriformis, jy. 57. Mus. Prestwich. 



The lines denote the size of the specimens. 



