236 Bulletin American Museum of Natural History. [Vol. XXXII. 



Explanation of Plates. 



Plate XLIV. 



Fig. 1. Zoroaster plaly acanthus sp. nov. Holotype (upper view). Nat. size. 

 Fig. 2. " " " (lower view). 



Fig. 3. Pedicellaster hyperoncus sp. nov. Holotype (upper view) . Nat. size. 

 Fig. 4. " " " (lower view). 



Plate XLV. 



Fig. 5. Diopederma axiologum sp. nov. Holotype (upper view). Nat. size. 



Fig. 6. " " " (lower view). 



Fig. 7. " " " Base of arm and adjoining portion of 

 disc, X 4|. 



Fig. 8. phiur a oligopor a sp. nov. Holotype (upper view). X25. 



Fig. 9. " " " (lower view). 



Plate XLVI. 



Fig. 10. Urechinus reticulatus sp. nov. Holotype (side view), •§- nat. size. 



Fig. 11. " " " (posterior view). 



Fig. 12. " " " (upper view). 



Fig. 13. " " " (lower view). 



