PLATE IX. 



Fig. 



1 . Athorybia rosacea ; a lateral view. 



2. The same magnified, and viewed from above. 



3. The same deprived of most of its hydrophyllia, and viewed from above. 



4. 5. Hydrophyllia. 



6. A polypite. 



7, 8 1 Some of its villi. 



9 ti.—f. The ends of the tentacular branches in various stages of development. 

 10, 11. Large and small thread-cells. 



12. A gonoblastidium, with androphores, gynophores, and hydrocysts. 

 l.'l Gynophores attached to their common stem. 

 14, 15. Similar bodies enlarged, and viewed se]>aralely. 



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