PLATE I. 
CORALS FROM THE CHALK. 
1. ‘The corallum of Caryophyllia Lonsdalei, Duncan. (P. 3.) 
2. ‘The calice and columella, magnified. 
3. The costa, magnified. 
4. The corallum of Caryophyllia Tennanti, Duncan. (P. 4.) 
5. ‘The calice, magnified. 
6. The cost, magnified. 
7.  Caryophyllia cylindracea, Reuss, sp. (P. 3.) Ona Belemnite. 
8 
9 
Unusual shapes of this species. 
11. A calice, magnified, showing the small pali noticed in many specimens. 
12. A septum, its dentation, and a portion of one of the pali, magnified. 
