Fig. 



8 13. EcillNOCYAMUS PUSILLUS, />. 10. 



3a. Upper .surface. 



8^. Under surface. 



Sc. Side view. 



8d. Iliglil}- luagnificd. 



8^. Spines magnified. 



9. Another specimen, under surface. 



10«. Upper surface. 



10/5. Side view. 



11. Under surface. 



12. Interior, dorsally. 



13. Interior vcntrallj. 



14. ECHINOCYAMUS HISPIDULUS, /J. 11. 



14«. Upper surface. 

 14d. Under surface. 

 14c. Side view of a variety. 



15. ECHINOCYAMUS P0SILLTJS, Var. ROTUNDUS. 



16. EcilINOCVAMUS SUFFOLCIENSIS, /I. 11. 



17. IS. ECHINOCYAMUS OVIFORMIS, /;. 12. 



19. COMATULA BrOWNII,jO. 19. 



17«. Upper surface. 

 1 7*5. Under surface. 

 176'. Side view. 



20. CoMATULA WOODWARDI, />. 19. 



20<2. Upper smface. 

 20^. Under surface. 

 20c. Side view. 



