TAB. XV. 
CORALS FROM THE CORAL RAG. 
Stytina DELABECHII (p. 79). 
Fig. 1. A small group; the common basal plate has in part lost its epitheca. Natural 
size. 
la. A few corallites magnified, showing the exotheca and some fragments of the 
epitheca. 
14. Calicular surface of the same corallum ; natural size. 
lc. Calices magnified. 
1d. Variety with small calices ; natural size. 
GoNIOCORA SOCIALIS (p. 92). 
Fig. 2. A branch embedded in stone ; natural size. 
2a. A portion of the same magnified, showing the costee and the mode of junction 
of the young individuals on the parent stem. 
26. Calice magnified. 
RuABDOPHYLLIA Puinuipsi (p. 87). 
Vig. 3. A portion of this compound coral, embedded in stone ; natural size. 
3a. A fragment of the same magnified, and showing the structure of the costi. 
34. A horizontal section of one of the branches at a short distance trom the calice. 
3c. A horizontal section of a corallite that is ready to divide by fissiparity. 
