Plate X. 



Figs. 5-17. lîegadrella homeyamai. Ij. 



Fig. 5. Portion cl' a floricome. 300 x . 



Fig. G. A terminal from the same. Lateral view. 670 x . 



Fig. 7. Terminal disc of floricome, seen from top. 670 x . 



Fig. 8. Large, unequal rayed, coronal oxypentactin. 5 x . 



Fig. 9. Portion of tlie free, coronal ray of the same. ÖO x . 



Fig. 10. Portion of the free ray of lateral prostal hexactins. 50 x . 



Fig. 11. Arrangement of prostal hexactins, dermalia, &c., at the edge of 



pleural prominence. 25 x . 

 Fig. 12. Combination figure to show the spiculation of the wall. Above 



dermal, below gastral surface. 25 x . 

 Fig. 13. Unusually large dermalia approaching a prostal hexactin. 150 x. 

 Figs. 14, 15. Ordinary dermalia. 150 x . 

 Fig. 16. Onychaster. 300 x. 

 Fig. 17. A piece of the basal mass. Basidictyonal hexactins recognizable. 



50 X . 



Figs. 18-27. Regadrella phœnix 0. Schm. 



(All figures from a specimen preserved on board the U.8. 

 Fish-Commission Steamer * Albatross '). 



Fig. 18. Portion of a floricome. 300 x . 



Fig. 19. Same. 670 x . 



Fig. 20. Onychaster. 300 x . 



Fig. 21. Terminal claws of same. 1000 x . 



Fig. 22. Combination figure to show the spiculation of the wall. Above 



dermal, below gastral surface. 25 x . 

 Figs. 23, 24. Ordinary dermalia. 

 Figs. 25-27. Portions of large, sword-shaped dermalia found in groups on 



the lateral wall, around the hydranth of a commensal Hydrozoa. 



100 X. 



