

PLATE LIII. 



Cellepora cervicornis, p. 298. 



FIG. 



1 . The Ooral of the natural size. Drawn from a Devonshire 



specimen. 



2. A magnified view of the old or mature cells. 



3. A view of the cells from near the edge of the divisions. 



4. 5. Transverse sections of the branches. 



