Plate X. 



Fig. I. 



— 2. 



- 3- 



- 4- 



— 5- 



— 6. 



- 7- 



- 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 Poroctdaris ptirpurata^ 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 iiiitrix^ from the side. Obj. II. Oc. o. 



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



— of pedicellaria of Porocidaris purpurata^ 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 iinperialis^ from the side. Obj. A A. Oc. I 

 (Zeiss.) 



Valve of tridentate — . - Acantkocidaris curvatispim's, irom \.\\& s\A.q. Obj. A A. Oc. I. 



(Zeiss.) 

 Valve of a large globiferons pedicellaria (a smaller specimen) of Tretocidaris sph/osa, from 



the inside. Obj. II. Oc. o. 



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



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



— - Goniocidaris umbraculum, from the side. Obj. II. Oc. I. 



— - Stereocidaris mitrix^ from the side. Obj. II. Oc. o. 



- Chondrocidaris gigantea^ixo\\\\\\&s\^&. Obj.II. Oc. I. 



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



- Stephanocidaris bispinosa (see Appendix), from the 



Valve of a large globiferous 



— small 



— laree 



— — small — 



— large — 

 inside. Obj. II. Oc. o. 



Valve of a large globiferous 



Stephanocidaris bracteata^ from the side. Obj. II. Oc. I. 

 Choiidrocidaris gigantea^ from the inside. Obj. II. Oc. I. 

 Goniocidaris tubaria^ - — Obj. II. Oc. I. 



— iimbractilum^- — Obj.II. Oc. I. 

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



— ^rtr^/i?/^/, from the .side. Obj. A A. Oc. VI. 



(Zeiss.) 

 Valve of a small 



(Zeiss.) 

 Valve of a large 



— — small 

 Oc. VI. (Zeiss.) 



Valve of a large 



Oc. VI. (Zeiss.) 

 Valve of a large 



Oc. III. 

 Valve of a small 



— — large 

 Oc. VI. (Zeiss.) 



Valve of a large 



Stereocidaris mitrix, 



— Obj. A A. OcIII. 



- Schizocidaris assiinilis, - — Obj. II. Oc. III. 



- Chotidrocidaris gigantea, from the inside. Obj. AA. 



Petalocidaris florigera. 



- Schizocidaris assimilis. 



Obj. A A. 

 Obj. II. 



- Petalocidaris florigera, from the inside. Obj. II. Oc. I. 



- Tretocidaris Bartletti, — — Obj. A A. 



awiulata, 



the side. Obj. II. Oc.o. 



