Fig. 



8 — 13. ECHINOCYAMUS PTJSILLUS, p. 10. 



8a. Upper surface. 



85. Under surface. 



8c. Side view. 



8d. Highly magnified. 



8e. Spines magnified. 



9. Another specimen, under surface. 



10a. Upper surface. 



10(5. Side view. 



11. Under surface. 



12. Interior, dorsally. 



13. Interior ventr ally. 



14. ECHINOCYAMUS HISPIDULUS, p. 11. 



14a. Upper surface. 

 14(5. Under surface. 

 14c. Side view of a variety. 



15. ECHINOCYAMUS PUSILLUS, Vai\ ROTUNDUS. 



16. ECHINOCYAMUS SUFFOLCIENSIS, p. 11. 



17. 18. ECHINOCYAMUS OVIFORMIS, p. 12. 



19. COMATULA BROWNII,j0. 19. 



17a. Upper surface. 

 1 lb. Under surface. 

 17c. Side view. 



20. COMATULA WOOD-WARDI, p. 19. 



20a. Upper surface. 

 205. Under surface. 

 20c. Side view. 



