PLATE IV. 



LIASSIC CORALS FROM THE SUTTON STONE. 



Fig. 



1. C^af/ioc(e7iia incru^fans, Duncan. (P. 28.) 



2. Some calices, magnified. 



3. Casts of Jstroccenia ^iddosa, Duncan. (P. 18.) 



4. Astromnia repfa/is, Duncan. (P. 20.) 



(). Calices altered by fossilization, magnified. 



7. Thecosmilia Sidtonensis, Duncan. (P. 11.) 



8. Side view of the corallum. 



9. A calice, magnified. 



10. Thecosmilia serial is, Duncan. (P. 12.) 



11. Upper surface of the corallum. 



12. A serial calice, magnified. 



13. Montlivaltia parasitica, Duncan. (P. 9.) 



14. Its calice, magnified. 



Its calices, magnified. 



