PLATE IV. 



LIASSIC CORALS FROM THE SUTTON STONE. 



Fig. 



1. Ct/at/ioccenia incrusians, Duncan. (P. 28.) 



2. Some calices, magnified. 



3. Casts oi Astroccenia ffidbosa, Dimcan. (P. 18.) 



4. Astroccenia re^tans, Duncan. (P. 20.) 



' [ Its calices, magnified. 



6. Calices altered by fossilization, magnified. 



7. T/iecosmilia Suttonensis, Duncan. (P. 11.) 



8. Side view of the corallum. 



9. A calice, magnified. 



10. Tliecosmilia serialis, Duncan. (P. 12.) 



11. Upper surface of the corallum. 



12. A serial calice, magnified. 



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



14. Its calice, magnified. 



