Plate IX. 



Fig. i. 



_ 2 



- 3- 

 4- 



5- 



6. 



7- 

 8. 



- 9- 

 - 10. 



ii. 



12. 



14. 



- 15- 



- 16. 



- !? 



18. 

 19. 



20. 



- 21. 



- 22. 



- 23. 



- 24- 



25. 



- 26. 



27. 



Valve of tridentate pedicellaria of Cidaris a/finis, from the side. Obj. II. Oc. III. 



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

 (See Appendix.) 



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



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



- Dorocid. papillata, from the inside. Obj. II. Oc. o. 



- Phyllacanthus 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. A A. Oc.HI. (Zeiss.) 

 Valve of small globiferous 



- large 



- Dorocid. papillata, from the side. Obj. II. Oc. o. 



- Cidaris affinis (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 affinis (U. S. F. C.), from the side. Obj. II. 



Obj. II. Oc. I. 



- Dorocid. papillata, from the side. Obj. II. Oc. I. (Comp. 



f. abyssicola, from the inside. 



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

 Blakei, from 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. 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. papillata. 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. 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. 



