38 BRITISH FOSSIL CORALS 



The flat base, the flat costse, and the limitation of the septal number to four cycles, 

 distinguish this species from Micrabacia coronula^ of the Upper Greensand, and from 

 Micrabacia Beaumontii ", Ed. and H., of the Neocomian. 



List of New Species from the Gaui.t. 



Variety of Caryophyllia Bowerbanki, Ed. and H. 



Five varieties of Trochocyathus Harveyanus, Ed. and H. 



TrochocyatJius WUtsJdrei, Duncan. 



Leptocyathus gracilis, „ 



Smilotrochus elouyatus, ,, 



,, yranulatus, „ 



„ insignis, „ 



„ cylindricus, „ 



Micrabacia Fittoni, „ 



III. — List of Species from the Gault. 



1. Caryophyllia Bowerbanki, Ed. and H., and one variety. 



2. Trochocyaihus comilus, PhiUips, sp. 



3. „ WillsJdrei, Duncan. 



4. „ Harveyanus, Ed. and H., and five varieties. 



5. Batliycyathus Sowerbyi, Ed. and H. 



6. Leptocyathus gracilis, Duncan. 



7. Cyclocyathus Fittoni, Ed. and H, 



8. Smilotrochus elongatus, Duncan.^ 



9. „ yranulatus, „ 



10. „ cylindricus, „ 



11. „ insignis, „ 



12. Trochosmilia sulcata, Ed. and H. 



13. Micrabacia Fittoni, Duncan. 



' ' Hist. Nat. des Coral.,' vol. iii, p. 30. 



2 Ibid., p. 30. 



3 Common to the Gault and Upper Greensand, 



