TAB. VIII. 
CORALS FROM THE UPPER CHALK. 
PARASMILIA CENTRALIS (p. 47). 
Fig. 1. A young specimen ; natural size. 
1a. The same, magnified to show the structure of the wall. 
14. Vertical section, magnified, so as to show the structure of the columella, the 
dissepiments, &c. 
lc. Calice, magnified ; 1, septa of the first cyclum ; 2 secondary septa; 3, septa of 
the third cyclum ; 4, 5, septa of the fourth and fifth orders, constituting the 
fourth cyclum. 
1d, 1e. Specimens remarkable by their great length. 
ParasmttiA MantTe.1i (p. 49). 
Fig. 2. Side view of the corallum ; natural size. 
2a. The same, magnified. 
PARASMILIA SERPENTINA (p. 51). 
Fig. 3. Side view of the corallum ; natural size. 
3a. Calice, magnified. 
36. Portion of the wall, magnified. 
C@LOSMILIA LAXA (p. 52). 
Fig. 4. Side view of the corallum; natural size. 
4a. A specimen, the growth of which has been intermittent ; natural size. 
44. The specimen No. 4, magnified, to show the structure of the wall. 
4c. Calice, magnified. 
PARASMILIA CYLINDRICA (p. 50). 
Fig. 5. Side view of the corallum ; natural size. 
