PLATE 92. 

 1-11. Glyptocidaris crenularis A. Ag. 



1. Globiferous pedicellaria. X 30. 



2. Tridentate pedicellaria. X 30. 



3. Ophicephalous pedicellaria. X 30. 



4. Triphyllous pedicellaria. X 30. 



5. Valve of tridentate pedicellaria. X 30. 

 G. Valve of globiferous pedicellaria. X 70. 

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



S. Valve of triphyllous pedicellaria. X 70. 



9. Valve of ophicephalous pedicellaria. X 70. 



10. Spha-ridiuin. X 70. 



1 1 . Spicules from pedicels. X 70. 



12-18. Pseudoboletia Indiana A. Ag., juv. 



12. Large globiferous pedicellaria. X 30. 



13. Small globiferous pedicellaria, with glands on the stalk. X 70. 



14. Slender tridentate pedicellaria. X 70. 



15. Valve of globiferous pedicellaria. X 70. 



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



17. Valve of broad tridentate pedicellaria. X 70. 



18. Sphreridium. X 70. 



