TAB. VI. 



Fig. 



1. Ostrea tenera, page 31. 



Specimen from Bracklesham. Mus. Edwards. 



2. Ostrea dorsata, p. 20. 



Specimen with united valves, showing it to have been attached to some cylindrical 

 body, which circumstance had communicated a semi-cylindrical elevation to the 

 centre of both valves. Mus. Edwards. 



3. Ostrea multicostata ? p. 28. 



From Bracklesham. Mus. Edwards. 



4. Ostrea longirostris, p. 26. 



Specimen of lower valve, with a broad mark of adherence. This specimen has been 

 perforated by several stone-eating bivalves. Mus. Edwards. 



