Plate 8 



Figs. 1, 2. Hippoporidra granulosa, new species (p. 43). 



1. Portion of an encrusting colony with oriented zooecia, X 20. 



2. Another part of the same zoarium, X 20, with erect and poorly 



oriented zooecia. 

 Albatross Station D. 2813. 

 3-5. Hippotrema spiculifera, new species (p. 43). 



3. The ramose zoarium, natural size. 



4. Portioia of a free colony, X 20, showing the large interzooecial 



avicularia and the frontal spicules. 



5. Zoarial surface, X 20, showing the spicules placed on the 



frontal of the cells. 

 Albatross Station D. 2813. 

 6, 7. Microecia tubiabortiva, new species (p. 48). 



6. An entire colony, X 4, showing the primitive Berenicea emit- 



ting various lobes. 



7. Portion of the same colony, X 12, showing the ovicell and 



the spaces with aborted tubes. 

 Albatross Station D. 2813. 



69 



