Plate 97. 

 1-3. Nudechinus stictus, sp. nov. 



1. Side view. X 8. 



2. Actinostome and base of corona. X 9. 



3. Abactinal system. X 12. 



4-G. Nudechinus scotiopremnus, sp. nov 



4. Side view. X 3. 



5. Actinostome and base of corona. X 6. 



6. Abactinal system. X 8. 



