PLATE T. 



Cheiraster yodomiensis. 



1. Abactinal view, x 0.66. 



2. Actiual viow. x 0.66. 



3. Mouth-plates. R = 170mm. x 3.3. 



4. Two adamtjulacral plates. Tlie under side is tlie adceutral 



end. 11 = 170 mm. x 3.5. 



5. Two somewhat large ventrolateral pLites with pectinate pedi- 



cellaria. x 4, 



6. Four ventrolateral plates, x 7. 



7. Abactinal plates, with three pores. K = 170ram. x 8. 



Persephonaster asper. 



S. Actinal view, x 0.5. 



9. Abactinal view, x 0.5. 



10. Mouth-plates. Pi = 205 mm. x 2.8. 



11. Sixth adambulacral plate. The under side is the adcentral 



end. R = 205 mm. x 4. 



12. Paxilla. R = 205mm. x 4.5. 



13. Madreporite. x 4.5. The under side is the outer. 



