TAB. VI. 



CORALS FROM THE LONDON CLAY. 



Balanophyllia desmophyllum (p. 35). 



Fig. 1. Side view of a complete specimen ; natural size. 



1 a. The same, magnified. 



1 b. Calice, magnified. 



1 c. Side view of the upper part of the same, with half of the calice cut away in 



order to show the structure of the septa and the depth of the fossula. 



DeNDROPHYLLIA DENDROPHYLLOIDES (p. 36). 



Fig. 2. A large group ; natural size. 



2 a. Calice, magnified. 



2 b. One of the branches, magnified to show the structure of the walls. 



2 c. Two young individuals that have not yet produced young by gemmation, and 



are cemented together by their basis. 



Stephanophyllia discoides (p. 34). 



Fig. 3. Side view of a specimen, magnified ; the natural size is indicated by the length 

 of the line placed below. 



3 a. Calicular surface, magnified. 



3 b. Inferior surface, or mural disc, magnified. 



