PLATE II. 



Persephonaster triacanthus. 



J4. Abactinnl view, x 1. 



J5. Actinal view, x 1. 



](). Actiual interradius, deuuded. x 1. 



17. Moiitli-plates and adjoining adambniacrals aîid ventrolaterals, 



denuded, x 5. 

 Ü8. Mouth-plates and adjoining adambulacrals. x 4. 

 11). Tliird inferomarginal and adambulaeral plates. The under side 



is the adcentral end. x 5.5. 



20. Eleventh superomarginal plate. Tlie under side is the {idcen- 



tral, the right side the inner, x 5. 



21. Paxilla. Thi'ee different views, x 8. 



22. Madreporite. The under side is the outer, x 7. 



Persephonaster misakiensis. 



23. Abactinal view, x 0.8. 



24. Actinal view, x 0.8. 



25. Actinal interradius. X 1. 



26. Third inferomarginal with adambniacral and ventrolatin'al plates. 



The under side is the adcentral end. x 6. 



27. Tenth and eleventh adambulaeral plates, denuded. The under 



side is the abcentral end. 



28. Tenth superomarginal plate. Tlie undir side is the inner, the 



left side the abcentral end. x 6.5. 



29. Mouth-plates, x 4. 



30. Ditto; side view, x 5.5. 



31. Paxilla of somewhat small s'lzo. x 40. 



32. Abactinal skeleton, x 7. 



33. Madreporit<>. x 8. 



