PLATE III. 



ECHINODERMS OF THE LONDON CLAY. 



Fig. 



1. CCELOPLEURUS WeTHERELLI, jO. 24. 



la. Upper surface. 



Id. Under surface. 



Ic. Profile. 



Id. Profile magnified and restored. 



le. Genital disk. 



1/ Specimen with spines. 



ly. Spine, and magnified portion. 



2. EcHiNOPSis Edwabdsi, ^. 23. 



2a. Upper surface of natural size. 



26. The same magnified and restored. 



2c. Plates and pores. 



2d. A primary tubercle. 



2e. A spine. 



2/. Portions of middle and extremity of spines. 



3. Spine of Echinus Dixonianus, jo. 22. 



4. Spine of Cidaris Websterianus, jo. 22. 



5. Hemiaster Prestwichii, ^. 25. 



5a. Upper surface. 



5d. End view. 



5c. Side view. 



5d. Upper surface magnified and restored. 



6. HeMIASTER BOWERBANKII.JO. 24. 



6a. Upper surface. 

 66. Under surface. 

 6c. End view. 



