Plate IX. 



Vig. I. 



- 2. 



- 3- 



- 4- 



- 5- 



- 6. 



- 7- 



- 8. 



- 9- 



- lO. 



- II. 



- 12. 



- 13- 



- 14. 



- 15- 



- 16. 



- 17- 



- 18. 



- 19- 



- 20. 



- 21. 



- 22. 



- 23. 



- 24. 



- 25. 



- 26. 



- 27. 



Valve of tridentate pedicellaria of Cidaris affinis^ from the side. Obj. II. Oc. III. 

 — - small globiferons pedicellaria of Histocidaris elegans^\ from the side. Obj. II. Oc. I. 

 (See Appendix.) 



— - Dorocidaris papillata, - — Obj. II. Oc. o. 



— - Tretocidaris ajimilata. Obj. II. O c. o. 



— - Dorocid. papillata^ from the inside. Obj. II. Oc. o. 



— - Phyllacajithus imperialis^ from the side. Obj. II. 



Valve of large globiferous 

 Stalk - — — 



Valve - — — 



— - small — 

 Oc. III. 



Valve of tridentate 



— - small globiferous 

 Oc. III. 



Valve of large — 



— - small — 



Oc. III. 

 Stalk of large — 



Valve - small — 



Fig. 20.) 

 Valve of small — 



Obj.AA. Oc. III. (Zeiss.) 

 Valve of small globiferous 



— - large — 



- Dorocid. papillata.^ from the side. Obj. II. O c. o. 



- Cidaris afjinis (U. S. F. C), from the inside Obj. II. 



— — from the side. Obj. II. Oc. I. 



- Goniocidaris biserialis, from the side. Obj. II. Oc. III. 



- Cidaris a/Jiiiis (U. S. F. C), from the side. Obj. II. 



— — Obj. II. Oc. I. 



- Dorocid. papiilaia,ivomth.&s\åQ. Obj. II. Oc. I. (Comp. 



— — f. abyssicola^ from the inside. 



— - — — from the inside. Obj. II. Oc. III. 



— - — Blakei, iron\ the nside. Obj. II. Oc. o. 

 Point of a valve of a small globiferous pedicellaria of Cidaris affinis (U. S. F. C). Obj. V. Oc. I. 

 Valve of tridentate pedicellaria of Cidaris affinis (U. vS. F. C), from the inside. Obj. II. Oc. I. 



— - -- _ . _ _ _ . the side. Obj. II. Oc. I. 

 Point of a valve of a small globiferous pedicellaria of Dorocid. papiilata. Obj. V. Oc. o. 

 Tridentate pedicellaria of Cidaris affinis (U. S. F. C). Obj. II. Oc. o. 



Valve of a large globiferous pedicellaria of Cidaris affinis, from the inside. Obj. II. Oc. I. 



— - tridentate _ . _ _ . _ Obj. II. Oc. III. 

 Large globiferous pedicellaria of Cidaris ajfijiis. Obj. o. Oc. I. 



Valve of tridentate pedicellaria of Dorocid. papillata, from the inside. Obj. II. Oc. o. 



— - large globiferous pedicellaria of Dorocid. (?) micans, from the inside. Obj. II. Oc. o. 

 Tridentate pedicellaria of Dorocid. papillata. Obj. o. Oc. I. 



