Plate 92. 

 1-11. Glyptocidaris crenularis A. Ag. 



1. Globiferous pedicellaria. X 30. 



2. Tridcntate pedicellaria. X 30. 



3. Ophicephalous pedicellaria. X 30. 



4. Triphyllous pedicellaria. X 30. 



5. Valve of tridcntate pedicellaria. X 30. 

 (). ^'alve of globiferous pedicellaria. X 70. 



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



8. Valve of triphyllous pedicellaria. X 70. 



9. Valve of ophicephalous pedicellaria. X 70. 



10. Splueridiuni. X 70. 



11. Spicules from pedicels. X 70. 



12-18. Pseudoboletia Indiana .\. .\g., juv. 



12. Large globiferous pedicellaria. X 30. 



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



14. Slender tridcntate pedicellaria. X 70. 



1.'). Valve of globiferous pedicellaria. X 70. 



1(). Side view of tip of same. X 70. 



17. \'alvc of broad tridcntate pedicellaria. X 70. 



18. Splueridiuin. X 70. 



