PLATE III. 



ECHINODERMS OF THE LONDON CLAY. 



Fig. 



1. Ccelopleurus Wetherelli, p. 24. 



la. Upper surface. 



lb. Under surface. 



lc. Profile. 



Id. Profile magnified and restored. 



le. Genital disk. 



If. Specimen with spines. 



Ig. Spine, and magnified portion. 



2. Echinopsis Edwardsi, p. 23. 



2a. Upper surface of natural size. 



2i5. 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, p. 22. 



4. Spine op Cidaris Websterianus, p. 22. 



5. Hemiaster Prestwichii, p. 25. 



ha. Upper surface. 



53. End view. 



5c. Side view. 



6d. Upper surface magnified and restored. 



6. Hemiaster Bo werbankii, p. 24. 



6a. Upper surface. 

 6b. Under surface. 

 6c. End view. 



