TAB. XIX. 
CORALS FROM THE CORAL RAG. 
CoMOSERIS IRRADIANS (p. 101). 
Fig. 1. Calicular surface of a specimen, in which the intercalicular ridges are not very 
.o) 
numerous ; natural size. 
la. A specimen, in which the intercalicular ridges are very rare, and the aspect of 
the compound corallum more resembles that of Astrea ; natural size. 
14. A specimen, in which these ridges are very numerous, and give to the coral 
the aspect of a Meandrina. 
lc. A portion of the specimen, No. 1, magnified, to show the structure of the 
corallites. 
1d. Under surface, showing the epitheca covering the common basal plate ; natural 
size. 
