PLATE VI. 



Fig. 



1. Stephanomia Awphitridis. A fragment taken on the east coast of Australia. 



2, 3. A portion of this slightly enlarged, and viewed in different aspects. 



4. A single hydrophyllium, with a polypite, hydrocysts, and part of the coenosarc. 



5. 5 «, 6 a, 6 b. Two views of other hydrophylha. . i 



6. Another hydrophyllium. 



7. The end of one of the tentacular branches, magnified. 



8. The same more highly magnified. 



9. The " peculiar bodies" mentioned at p. 73. 



10. Thread-cells. 



11. Villi. 



12. Part of the coenosarc, with hydrocysts and gonoblastidia. 



13. 14. Gynophores with their single ova. 

 15. An androphore. 



