PLATE 94. 

 1-6. Pachycentrotus australiae, comb. nov. 



1. Valve of globiferous pedicellaria. X 70. 



2. Side view of tip of same. X 70. 



3. Valve of tridentate pedicellaria. X 70. 



4. Side view of a similar valve. X 70. 



5. Valve of ophicephalous pedicellaria. X 70. 

 C. Valve of triphyllous pedicellaria. X 70. 



7, 8. Heliocidaris crassispina, comb. nov. 



7. Valve of globiferous pedicellaria from a specimen IS mm. h. d. X 70. 



8. Side view of tip of same. X 70. 



9. Strongylocentrotus franciscanus A. Ag. 



9. Valve of globiferous pedicellaria. X 70. 



10, 11. Paracentrotus Gaimardi Mrtsn. 



10. Valve of globiferous pedicellaria. X 70. 



11. Side view of same. X 70. 



12. Paracentrotus lividus Mrtsn. 



12. Side view of tip of valve of globiferous pedicellaria. X 70. 



13-16. Strongylocentrotus echinoides A. Ag. and Cl. 



13. Tridentate pedicellaria. X 20. 



14. Valve of ophicephalous pedicellaria. X 70. 



115. Base of valve of globiferous pedicellaria. X 70. 

 16. Side view of tip of same valve. X 70. 

 17-23. Strongylocentrotus nudus A. Ag. 



I 17. Valve of ophicephalous pedicellaria. X 70. 



15. Valve of globiferous pedicellaria. X 70. 



19. Side view of tip of same. X 70. 



20. Valve of triphyllous pedicellaria. X 70. 



21. Valve of small tridentate pedicellaria. X 70. 



22. Blade of valve of large tridentate pedicellaria, from specimen taken at Station 501S. 



X 70. 



23. Valve of large tridentate pedicellaria, from same specimen, with tip directed towards 



observer. X 70. 



24-27. Strongylocentrotus pulchellus A. Ag. and Cl. 



24. Side view of valve of globiferous pedicellaria. X 70. 



25. Base of same. X 70. 



26. Valve of tridentate pedicellaria. X 70. 



27. Sphseridium. X 70. 





