PLATE V. 



Fig. 



Names of the shells. 



l,a — c. Chama gryplioides, var. 

 gryphina .... 



2, a — c. Pholas intermedia . 



3. Thracia ventricosa . 



4, a — b. Lucina crassidens . 



5. Pholas cylindrica . 



PAGE 



45 



48 

 48 

 45 

 49 



6, a, h, Nucula turgens .... 44 



7, a. Ostrea ungulata (outside 



lower valve) .... 41 

 7, (5. — — (inside 



upper valve) .... 41 



Localities from which the specimens figured 

 were obtained. 



Red Crag, Waldringfield (derived). 



Red Crag, Waldringfield. 



Cor. Crag, Ramsholt. 



Red Crag, Waldringfield? (derived). 



Red Crag, Walton Naze. Specimen to which 



the name of dactylus was assigned. 

 Red Crag, Waldringfield ? (derived). 



Cor. Crag, Ramsholt. 



Cor, Crag, Ramsholt. 



The inside view of this oyster, not having been reversed by the Engraver, fig. 7 b 

 presents an erroneous appearance, inasmuch as that the umbo of the valve should turn 

 to the right instead of the left. Viewed by reflection in a mirror the representation will 

 be found correct. 



