DESCRIPTION OF FLATE V. 



FOSSIL SHELLS FKOH THE LOWER GREEN-SAND DEPOSITS. 



Fig. 1. — Thetis minor ; from the ferruginous sand-rock at the base of 



Slianklin Cliff. 

 2. — Another view of the same, to show the beaks and hinge-line. 

 3. — Gryphea sinuata ; represented one-fourth the natural size ; it is 



often found much larger. From the Green-sand at Shaukliu, 



Ventnor, Sandown, &c. 

 4. — Tornatella albensis ; from the Cracker Rocks, Atherfield. 

 5. — Terebratula sella ; an abundant shell in the sand at Atherfield. 

 6. — Nucula scapha; from the sand-rock, Atherfield. 



The three following shells are imbedded in a fragment of the Crackers' 

 Bock, from Atherfield. 



7. — Natica rotundata. 



8. — Plerocera reivsa. 



9 . — Rostellaria Robin aldina. 



10. — Cerithktm tmricidatum ; from Atherfield. 



11 Scaphites gig as ; from Atherfield. The figure is but one-third 



the size, linear, of the original. 



This fossil is often found two feet in length, associated with Ammonites 



equally gigantic. 



