DESCRIPTION OF PLATE III. 



FOSSII. SHELLS FROM THE MARINE EOCENE DEPOSITS. 



Pig. 1. — Psammobia solida, the valves united ; from Headon Hill. 

 1 °. — The inner aspect of one of the shells of the same. 

 2. — Corbula cuspidata, the united valves; White Cliff Bay. 

 2°.— The inner aspect of one of the shells of the same species. 

 3. — Dilrupa plana ; Alum Bay. 



This pteropodous mollusk is abundant in the sandstone rock, thai 



overlies the mottled clays which intervene between the Chalk 



and the upper Eocene deposits. 

 4. — Ancitlaria subulata ; Alum Bay. 

 5. — Panopeea intermedia ; Alum Bay. 

 6. — Oytherea incrassata ; Colwell Bay. 

 7. — Cardita planicosta, half the natural size; Alum Bay. 



These shells are abundant in most of the localities of the marine tertiary 

 clays, both in the Island and on the opposite coast of Hampshire and 

 Sussex. The Panopeea intermedia, (fig. 5), is a well-known shell in the 

 Bognor Rocks; and the Cardita planicosta, (fig. 7), occurs in profusion in 

 the clay at Bracklesham Bay in Sussex. The Oytherea incrassata, (fig. 6), 

 is found in a sandy clay at Colwell Bay, almost as perfect aud fresh as if 

 recently left by the sea, 



