Plate 16. 



1-8. Podophora pedifera Agass. 



1. The disk of an actinal pedicel, seen from above. 



2. The same, seen from below. 



3. Profile of the same. 



4. Disk of an actinal pedicel, oblique view. 



5. The disk of an actinal pedicel. 



6. Central space of the disk of a pedicel, seen from below with yoke-shaped spicules, 



7. Basal part of one of the lamince. 



8. Spicule. 



9-14. Podophora atrata Agass. 



9. An actinal pedicel, seen from below the disk. 



10. Actinal pedicel seen in profile. 



11. Basal part of one of the laminee of the disk, from a specimen of 8 mm. in diameter. 



12. Yoke-shaped spicule from the same specimen as 11. 



13. Basal part of one of the laminae of the disk. 



14. The tip of a dorsal pedicel. 



The figures 1 to 8 are from a specimen of 82 mm. in diameter including the spines. With 

 the exception of 11, 12, the others are drawn from a specimen measuring 74 mm. in diam- 

 eter, including the spines. 



Podophora pedifera from the outside reef, Fakarava, Paumotus, "Albatross" Ex., 

 1899-1900. 



P. atrata from the Hawaiian Ids., A. Garrett Coll. 



