Plate IX. 



Fig. I. 



- 2. 



- 3- 



- 4- 



- 5- 



- 6. 



— 9- 



— lO. 



— II. 



— 12. 



14. 



15- 

 16. 



17- 

 18. 

 19. 

 20. 

 21. 

 22. 



23- 

 24. 



25- 



26. 

 27. 



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

 — - small globiferous pedicellaria of Histocidaris elegansQ), from the side. Obj. II. Oc. I. 

 (See Appendix.) 



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



— - Tretocidaris annulata. Obj. II. Oc. o. 



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



— - Phyllacaiithus imperialism 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 — 



\'alve - small — 



Fig. 20.) 

 Valve of small — 



Obj. A A. Oc.III. (Zeiss, 

 Valve of small globiferous 



— - large — 



Dorocid. papiilata^ from the side. Obj. II. Oc. o. 

 Cidaris a/Jim's (U. S. F. C), from the inside Obj. II. 



— — from the side. Obj. II. Oc. I. 

 GoJiiocidaris biserialis, from the side. Obj. II. Oc.III. 

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



— — Obj. II. Oc. I. 



Dorocid. papi/iata, irom the side. Obj. II. Oc. I. (Comp. 



— — f. adyssicoia, from the inside. 



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



— - — B/akei, from the nside. Obj. II. Oc. o. 

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

 Valve of tridentate pedicellaria of Cidaris affijiis (U. S. 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 affinis. Obj. o. Oc. I. 



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



— - large globiferous pedicellaria of Dorocid. Q)micans, from the in.side. Obj. II. Oc. o. 

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



