PLATE V. 
CORALS FROM THE CHALK. 
1. The corallum of Zrochosmilia (Celosmilia) cylindrica, Duncan. (P. 10.) 
2 
A fractured portion of the corallum, showing the endothecal dissepiments and 
the septa. 
3. Coste, magnified. 
4. The corallum of Parasmilia monilis, Duncan. (P. 12.) 
5. A magnified view of the coste on the peduncle. 
6. A magnified view of the coste high up. 
7. ‘The costae on the body of the corallum, magnified. 
eh The corallum of Parasmilia centrahs, Ed. and H., sub-species Gravesana. 
9. (P. 12.) 
10. a 
at The corallum of Parasmilia centrahs, showmg the typical costal arrangement. 
Ta. 
12. 
14. The coste of the corallum, magnified. 
