PLATE III. 



Figure 1. A mass of olive shaly sandstone, with Mollusca and many specimens of embedded 

 Smiloteochus Blanpordi, Duncan. Also a small portion of a Stylophora, magnified in 

 figure 15. 

 3. Trochosmilia Mbdlicotti, Duncan. A moderate-sized specimen, side vie-w. 



3. Its calice, magnified. 



4. The septa from a worn portion, magnified. 



5. A side view of a septum, showing the large granules and some endotheca, magnified. 



6. Trochosmilia Oldhami, Duncan. The coral, natural size. 



7. Its calice. 



8. Costse, magnified, the smaller being hidden by epitheca. 



9. The triplets of small septa between the larger septa in the calice, magnified. 



10. Another specimen, side view. 



11. The septa, magnified. 



13. MoNTLiVALTiA Ranikoti, Duucau. The coral, natural size. 



13. The calice, magnified. 



14. The costse, magnified. 



15. A portion of a Stylophora, magnified. 



