Plate 67. 



1-3. Echinosoma panamense Mortens. 



1. Triphyllous pedicellaria. x 70. 



2, 3. Tridentate pedicellariae, x 70. 



4-11. Echinosoma hispidum Mortens. 



4. Large tridentate pedicellaria. x 10. 



5. Valve of large tridentate pedicellaria. x 15. 



6. Ordinary small tridentate pedicellaria. X 10. 



7. Valve of ordinary small tridentate pedicellaria. X 30. 



8. 9. Rare forms of small tridentate i)edicellariae. X 10. 



10. Triphyllous pedicellaria. X 10. 



11. Spliaeridiuin. x 70. 



12-15. Echinosoma tenue Pomel. From Station 3784. 



12. Large tridentate pedicellaria. X 30. 



13. Valve of large tridentate pedicellaria. x 30. 



14. Valve of small tridentate pedicellaria. X 70. 



15. Valve of triphyllous pedicellaria. X 70. 



16-21. Echinosoma tenue Pomel. From Station 5084. 



16. Valve of large tridentate pedicellaria. x 30. 



17. Small tridentate pedicellaria. X 30. 



18. Valve of small tridentate pedicellaria. X 70. 



19. Tripliyllous pedicellaria. X 30. 



20. Valve of triphyllous pedicellaria. x 70. 



21. Valve of ophicephalous pedicellaria. X 70. 



