Plate 8. 



. Campanuliua denticulata, page 12. 



Fig. 1. A single colony, natural size. 

 Fig. 2. A colony with gonotheca. x 20. 



Fig. 3. A hydrotheca with the hydranth partly expanded, x 116. 

 Fig. 4. A hydrotheca with the operculum infolded, and only a frayed remnant of the 



hydranth left, x 116. 

 Fig. 5. This shows the teeth and operculum in normal position, x 116. 

 Figs. <'> and 6b show the two hydrothecae that have three rows of teeth and an operculum, 

 x 11C. 



Fig. 7. The one hydrotheca that has no teeth, x 116. 

 Fig. 8. The gonotheca. x 116. 



