PLATE 109. 

 1-3. Echinus tylodes, sp. nov. 



1 . Ahactinal view of type-specimen partly denuded. 



2. Side view of same. 



3. Actinal view of same. 



4-6. Echinus euryporus, sp. nov. 



4. Abactinal view of type-specimen partly denuded. 



5. Side view of same. 



6. Actinal view of same. 



All figures natural size. 



