16 BRITISH FOSSIL CORALS 



IV. — List of the Corals from the Upper and Lower White Chalk. 



1. Caryophyllia cylindracea, Reuss, sp.^ 



2. „ Lonsdalei, Duncan. 



3. Caryopliyllia Tennanti, Duncan. 



4. OnchofrocJms serpentiniis, ,^ 



5. Trochosmilia laxa, Ed. and H., sp., and varieties I, 2, 3.* 



6. „ cormicopi(s, Duncan. 



7. Trochosmilia Wiltshiri, „ 



8. „ Wbodwardi, Duncan. 



9. „ yranulata, „ 



10. ,, cylindracea, „ 



11. Parasmilia centralis, Mantell, sp., varieties 1, 2.* 



12. ,, cylitidrica, Ed. and H. 



13. „ Fittoni,'- 



14. „ serpentina, „ 



15. „ monilis, Duncan. 



16. ,, granulata „ 



17. Diblasus Gravensis, Lonsdale. 



18. Synhelia Sharpeana, Ed. and H. V 



19. Stephanojjhyllia Boicerbanki, Ed. and H. ) 



The list of species presents a remarkable assemblage of forms. The CaryophyllicB are 

 represented in existing seas, from low spring-tide level to 80 or 200 fathoms. The 

 West Indian, the Mediterranean, the south-west and the north-east British seas, are 

 favourite localities. With one exception, the CaryojjJryllia Sniithi, they are always deep water 

 forms ; and this Coral is evidently a littoral variety of C. horealis. The Oculinid<s of 

 the present day are usually found under the same conditions as the CaryophyllicB, and 

 doubtless the Farasmilia and Trochosmilice were dwellers in from 10 to 200 fathoms.'' 



There are no forms which indicate shallow waters, or anything like a reef. The Coral 

 fauna was a deep-sea one. 



' Synonym, Cyathina Icevigata. 



^ Lower Chalk. 



^ Varieties or sub-species not hitherto described. 



'' Varieties or sub-species not hitherto described. 



'' See the remarks upon the propriety of absorbing P. ManteUi. M. de Fromentel has described 

 Cnryopliyllia decemeris from Southfleet. Much experience in these species inclines me to believe that the 

 decenieral arrangement is a monstrosity. There bas only been one specimen of this species found. 



* Lower Chalk. 



' Dr. W. Carpenter, F.R.S., dredged up living Ocnlinida from the great dcjoth of .530 fathoms, in the 

 autumn of 1868. 



