Plate 4. 



1-22. Podophora pedifera Agass. 

 1-22. Valves of Pedicellarise. 



1. Valve of an Ophicephalous pedicellaria, in profile, from the buccal membrane near the 



teeth. 



2. Valve of an Ophicephalous pedicellaria, another view of the same (fig. 1). 



3. Valve of an Ophicephalous pedicellaria, interior of a valve of the same. 



4. Valve of an Ophicephalous pedicellaria, similar to 3 ; exterior view. 



5. Valve of an Ophicephalous pedicellaria, interior view of same. 



6. Valve of an Ophicephalous pedicellaria, profile of same. 



7. Valve of an Tridentate pedicellaria, from the right anterior ambulacrum, not far from 



the actinal system. 



8. Valve of a Tridentate pedicellaria, the same as 7 ; external view. 

 9 Valve of a Tridentate pedicellaria, the same as 7 ; internal view. 



10. Valve of a Tridentate pedicellaria, the same as 7 ; profile of the articulation. 



11. Valve of an Ophicephalous pedicellaria, from the left anterior ambulacrum, nearer the 



ambitus than to the actinal system. 



12. 13, 14. Details of the same pedicellaria as 11 ; articulations of each valve. 



15. Valve of an Ophicephalous pedicellaria, from the left posterior interambulacrum, mid- 



way between the actinal system and the ambitus. 



16. Serration from same as 15. 



17. Stalk and head of an Ophicephalous pedicellaria. 



18. Valve of a Globiferous pedicellaria, from the apical part of the left anterior ambu- 



lacrum. 



19. Detail of an articulation seen from the exterior, the same as 18. 



20. Interior the same as 18. 



21. Exterior the same as 18. 



22. View of the stalk and head of a globiferous pedicellaria. 



The figures are about equally enlarged with the exception of 1-6, which are somewhat 

 larger. 



Outer reef, Fakarava, Paumotus, " Albatross " Ex., 1899-1900. 



