TAB. XXI. 
CORALS FROM THE GREAT OOLITE. 
Montiivautia Smitut (p. 110). 
Fig. 1. Side view of an adult specimen ; natural size. 
la. Another specimen much shorter. 
14. Calice; natural size. 
STYLINA CONIFERA (p. 105). 
Fig. 2. A fragment; natural size. 
2a. A few corallites magnified. 
CyatHorHora Prarti (p. 108). 
Fig. 3. A small mass; natural size. 
3a. A few corallites magnified. 
THAMNASTREA LYELL (p. 118). 
Fig. 4. Fragment, on part of which the calices are in their normal state; whereas 
towards the left side they are modified by the action of water and other 
agents. 
4a, 46. Calices, situated m different parts of the same compound mass, magnified. 
