PLATE XV. 



Fig. 1. Valve of crossed pedicellaria, smaller form, of Pedicellaster 

 palœocrystallus. ^■^*'/i. 



— 2. Crossed pedicellaria, small form, of Pedicellaster typiciis. ^^'Vi. 



— 3. Valve of crossed pedicellaria, small form, of Pedicellaster 



typiciis. ^^^Ii. 



— 4. Crossed pedicellaria, large form, of Pedicellaster palœocry- 



stallus. ^^-'Ii. 



— 5. Valve of crossed pedicellaria, large form, of Pedicellaster 



ty picas. ^"'-'1^. 



— 6. Crossed pedicellaria, large form, o( Pedicellaster typiciis. ^^''/i. 



— 7. Valve of crossed pedicellaria, large form, of Pedicellaster 



palœocrystallus. ^^^Ii. 



— 8. Valve of crossed pedicellaria of Stichaster albulus, from the 



inside. 



215, 



— 9. Crossed pedicellaria of Stichaster albulus. '^^^/i. 



— 10. Valve of crossed pedicellaria of Stichaster albulus, side 



view. ^^^Ii. 



