PLATE LXIV. 



FIG. 



1. TUBULIPORA FLABELLARIS, p. 446; a colony in the 



earlier, flabellate stage. 



2. , a very young colony, showing the primi- 

 tive disk. 



3. - , nat. size, a fully developed colony. 



4. LICHENOPORA VERRUCARIA, p. 478; a segment of the 



disk. 



4. , single cell, showing the acuminate margin. 



, nat. size. 



6. STOMATOPORA INCURVATA, p. 433; nat. size. 



7. - , portion of the zoarium, enlarged. 



8. , side view of the zocecia, showing the ori- 

 fices. 



