PLATE V. 



LIASSIC CORALS FROM THE SUTTON STONE AND BR0CAST1.E. 

 Fig. 

 1. Jstrocoenia plana, Duncan. (P. 19). The corallum, natural size. 

 ~. Astrocoenia ffibbosa, Duncan. (P. 18.) A corallum, with much ccenenchyma. 



3. A corallum somewhat worn. 



4. The usual appearance of the Coral in the Sutton Stone ; all the calices have been 



worn away, and it requires some trouble to distinguish the fossil. 

 12. A section at right angles to the corallites, highly magnified. The columella, the 

 faint lateral dentations of the septa, and the round ornamentation betAveen the 

 costal ends are shown. 



5. Astrocoeiiia parasitica, Duncan. (P. 20.) 



6. The same, magnified. The Coral is parasitic on Bhabdophyllia recondita. , 



7. Astrocosnia peduncidata, Duncan. (P. 20.) The corallum, magnified. 



8. The corallum, natural size. 



9. A view of the peduncle and base, magnified. 



10. Cyathoccenia costata, Duncan. (P. 39.) The corallum, natural size. 



11. Some calices, magnified. 



