28 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [DoC. 4, 



'Seliasirxa, genns, Ed. ^- H. to Miocene species, West-Indian 



recent, Pacific recent. 



Bracliypliyllia, genus, Ed. ^ H.\ to species of the Italian Miocene. 



Plesiastrgea, genus, £"(?. ^ ^. to Australian, Indian Ocean, and 



Caribbean recent species and 

 European Miocene species. 



Eliodarsea, genus, Ed. 8f H. to Australian, Chinese, and Indian 



Miocene species. 



Pocillopora, genus, Lamh to species of Java Miocene, and 



recent species from Pacific, 

 Australia, Ceylon, and Red Sea. 



Alreopora, genus, Lamlc to ditto, ditto. 



It is evident from tMs Table that the alliances of the bulk of the 

 species of the West-Indian Miocene deposits are closest with the 

 recent Coral-fanna of the Pacific, Indian Ocean, Eed Sea, and 

 Australian seas, and with that of the Miocene of the Australian, 

 Javan, Sindhian, and European Tertiaries. It is very remarkable 

 that, of the fourteen genera just mentioned, seven should not be re- 

 presented in the present West-Indian Coral-fauna, but that they are 

 in the Eastern Seas, S. Pacific, Indian and Red Sea faunae. In the 

 Javan Tertiaries, whose Corals have been so ably described by Heuss, 

 the genera Pocillojpora, Alveojpora, and Favoidea are prominent 

 members ; but the general appearance of the Coral-fauna does not 

 convey the idea that the Javan and Caribbean Miocene deposits 

 had a very close homotaxis. There is that singular relation to 

 Eocene forms in the Javan Miocene (which Mr. Jenkins and my- 

 self have alluded to, Quart. Journ. Geol. Soc. 1864, vol. xx. p. 45) 

 very strongly developed in the case of the Madreporaria. This is 

 not observed in the West-Indian Miocene Coral-fauna. 



The Corals of the Australian Tertiaries are becoming better 

 known, and there are species and genera of them identical with 

 European Miocene deposits ; but the majority of the forms are pecu- 

 liar. jS'evertheless the genera Placotrochus, Flahellum, Antillia, and 

 TrocJiocyathus, which are represented in the Caribbean Miocene, 

 and which do not exist in the recent West-Indian Coral-fauna, 

 are prominent members of some of the Australian Tertiary Coral- 

 faunae. 



Up to the present time no affinity can be traced between the 

 Australian and the Javan Coral- faunae. 



14. Conclusion. — The only Cretaceous Corals of the West-Indian 

 Islands which have been described are from Jamaica ; and they indi- 

 cate the former existence of a Coral-fauna singularly like that of the 

 Lower Chalk of Gosau and of Martigues, accompanying a fauna of 

 Eudistes. There is an identity of species between the West-Indian 

 Cretaceous Corals and the European ; and there can be no doubt 

 about these widely spread Lower Cretaceous strata representing the 

 Coral-areas of the period. 



Jamaica has also yielded the species of an Eocene Coral-fauna ; but 

 they prove that the shales beneath the Miocene-beds had a Coral- 

 fauna like the London Clay, the Bracklesham beds, and the Paris 

 basin. The Coral-assemblage which is characteristic of the Num- 



