TAB. V. 
CORALS FROM THE LONDON CLAY. 
STYLOC@NIA EMARCIATA (p. 30). 
Fig. 1. A small mass of this compound corallum ; natural size. 
la. A portion of the calicular surface of the same, magnified. 
This specimen is somewhat weather-worn. 
Srytocania Monvicuaria (p. 32). 
Fig. 2. A small, somewhat gibbose mass of this compound corallum ; natural size. 
2a. A portion of the calicular surface, magnified so as to show the structure of the 
calices and of the marginal processes. 
26. Transverse section of the compound corallum, slightly magnified, to show the 
cavity circumscribed by its under surface. 
ASTROC@NIA PULCHELLA (p. 33). 
Fig. 3. A small mass of this compound corallum, in which most of the coraliites have 
been pressed together so that their calicular edges have become polygonal 
and completely united ; natural size. 
3a. Another group, in which most of the corallites have preserved their original 
circular form and free calicular margin. 
36. A portion of the specimen fig. 3, magnified. 
3c. A portion of the specimen fig. 3 @, magnified. 
STEREOPSAMMIA HUMILIS (p. 37). 
Fig. 4. A group of corallites ; natural size. 
4a. ‘Terminal portion of some of these, magnified. 
44. Calice, magnified. 
