PLATE I. 



Fig. 



Names of the shells. 



PAGE 



Localities from which the specimens figured 

 were obtained. 



1, a, b. Melampus fusiformis 



2, a — c. Helix Sutton ensis . 



3, a, b. Amaura Candida 



4, «, b. Paludina Clactonensis 



5, — vivipara . 



6, a, b. — contecta . 



3 Fluvio-marine Crag, Thorpe, in Suffolk. 



2 Cor. Crag, Sutton. 

 . 78 Red Crag, Butley. 

 . 69 Post-glacial, freshwater bed, Clacton. 

 . 70 Chillesford bed, Horstead. 



69 Pre - glacial, freshwater bed, Woman 

 Hythe, Run ton. 



3 Red Crag, Butley. 

 . 21 Fluvio-marine Crag, near Norwich. 



a. From specimen belonging to Mr. King, of Norwich. 



b. From specimen in the British Museum. 

 Troplion Sarsii 25 Red Crag, Butley. 



— antiquus, var. carina- 



tus contrarius . . 19 

 a. With prominent ridges, from the Norwich Museum. Fluvio-marine 



Crag ? 

 b 8f c. With less elevated ridges, from Red Crag, Newbourn, near 

 Woodbridge. 

 11, a, b. Trophon Turtoni .... 22 Red Crag, Butley. 



7, a, b. Pupa muscorum 



8, a, b. Troplion Berniciensis ? 



9. 

 10, a — c 



(This Plate was engraved December, 1867.) 



