Plate X. 



Fig. 24. Hybocodon prolifer. 



A. Hydranth and gonophores (After L Agassiz) 



B. Medusa. 



Fig. 25. Campanidaria denticulata. 



A. Natural size. 



B. Hydiotheca and pedicel. 



Fig. 26. Campanularia everla. 



A. Natural size. 



B. C. Hydrothecse and pedicels. 

 D. E. Gonophores. 



Fig. 27. Campanularia exigua. 



A. Colony (After Hincks). 



B. Gonophore (After Hincks). 



Fir.. 28. Campanularia fusiformis. 



A. B. Hydrothecœ (After Clark). 



C. Gonophore (After Clark). 



