Plate X. 



Fig. 



I. 



2. 



3- 

 4- 



5- 

 6. 



7- 

 8. 



- 9- 



- lO. 



- II. 



- 12. 



- 13- 



- 14- 



- 15- 



- i6. 



- 17- 



- i8. 



- 19. 



- 20. 



- 21. 



- 22. 



- 23. 



- 24. 



- 25. 



- 26. 



- 27. 



- 28. 



29. 

 30- 



31- 



Valve of pedicellaria of Porocidaris purpurata^ from the side. Obj. II. Oc. o. 



Piece of the same, from the inside. Obj. V. Oc. o. 



Valve of a large globiferous pedicellaria of Stereocidaris mttrix^ from the side. Obj. II. Oc. o. 



— — — — — - — — - the inside. Obj. II. Oc. o. 



— of pedicellaria of Porocidaris pitrptirata^ from the inside, the lower part. Obj. II. Oc. o. 



— - globiferous pedicellaria of Discocidaris (?) serrata^ from the inside. Obj. II. Oc. III. 



— - — — - — — - the side. Obj. II. Oc. III. 



— - tridentate — - Phyllacanthus imperialis^ fiom the side. Obj. AA. Oc. I 

 (Zeiss.) 



Valve of tridentate — - Acaiithocidaris curvatispinis^ from the side. Obj. AA. Oc. I. 



(Zeiss.) 

 Valve of a large globiferous pedicellaria (a smaller specimen) of Tretocidaris spiiiosa, from 



the inside. Obj. II. Oc. o. 



— of Tretocidaris spinosa, from the side. Obj. II. Oc. o. 



— - Stereocidaris jmtrix, - the inside. Obj. II. Oc. o. 



— - Goidocidaris zimbraculum^ from the side. Obj. II. Oc. I. 



— - Stereocidaris imtrix, from the side. Obj. II. Oc. o. 



— - C/tondrocidaris gigantea, irom the side. Obj.II. Oc. I. 



— - Tretocidaris spinosa, from the side. Obj. II. Oc. o. 



— - Step/ianocidaris bispinosa (see Appendix), from the 



Valve of a large globiferous 



— — small — 



— — large — 



— — small — 



— — large — 

 inside. Obj. II. Oc. o. 



Valve of a large globiferous 



- Step/ianocidaris bracteata^ from the side. Obj. II. Oc. I. 



- Chondrocidaris gigafttea.,ixou\\\\evi\i\de. Obj.II. Oc. I. 



- Goiiiocidaris tubaria., - — Obj.II. Oc. I. 



— icinbraculuin^ - — Obj. II. Oc. I. 



- Tretocidaris amiulata., - — Obj.II. Oc. o. 



— Bartletti, from the side. Obj. A A. Oc. VI. 



(Zeiss.) 

 Valve of a small 



(Zeis.s.) 

 Valve of a large 



— — small 

 Oc. VI. (Zeiss.) 



Valve of a large 



Oc. VI. (Zei.ss.) 

 Valve of a large 



Oc. III. 

 Valve of a small 



— — large 

 Oc. VI. (Zeiss.) 



Valve of a large 



Stereocidaris nutrix, 



Obj.AA. OcIII. 



Schizocidaris assiiui/is, - — Obj. II. Oc. III. 



Chondrocidaris gigantea, from the inside. Obj. AA. 



- Petalocidaris Jlorigera, 



- Schizocidaris assimilis., 



Obj.AA. 

 Obj. II. 



- Petalocidaris florigera., from the inside. Obj.II. Od. 



- Tretocidaris Bartletti., — — Obj. A A. 



aitnulata, — the side. Obj. II. Oc. o. 



