562 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [June 25, 



Of these thirty-five species only one belongs also to the recent 

 Coral-fauna ; fifteen species are common to European Eocene and 

 Lower Oligocene deposits ; two are also Miocene forms ; one is a 

 Cretaceous species ; and sixteen are new to science. 



The affinities of the new species are as follows : — 



Trochosmilia insignis with the European Eocene Trochosmilia. 



Asterosmilia Pourtalesi with the San-Domingan Miocene species. 



Circophyllia compressa 1 with the European Eocene and Lower Oligocene 



Clevei J species. 



Stylophora compressa with the European Oligocene and Miocene, and 



West-Indian Miocene species. 



Stephanoccenia incrustans with the European Oligocene species. 



Astrocoenia d' Achiardii with the European Cretaceous species. 



Leptoria profunda with the European Cretaceous and Eocene, Pa- 

 cific recent species. 



Groniastrsea variabilis with the Red-Sea and Pacific recent species. 



Turbinoseris, seven species. . . . The genus hitherto has been known only in the 



Lower Greensand. 



The following is the geological range of the genera : — 



Flabellum from the Eocene to the recent period inclusive. 



Trochosmilia from the Gaultto the Miocene period inclusive*. 



Asterosmilia from the Eocene to the Miocene period inclusive t. 



Circophyllia from the Eocene to the Lower Oligocene inclusive. 



Stylophora from the Coral-rag to the recent period inclusive*. 



Styloccenia from the Eocene to the Miocene period inclusive. 



Stephanoccenia from the Coral-rag to the recent period inclusive*. 



Astrocoenia from the Infra-Lias to the recent period J. 



Ulophyllia from the Coral-rag to the recent period inclusive §. 



Plocophyllia from the Eocene to the Lower Ohgocene. 



Manici na from the Eocene to the recent per iod J . 



Leptoria from the Coral-rag to the recent period § . 



Goniastrsea from the Lower Cretaceous to the recent period §. 



Solenastraea from the Eocene to the recent period ||. 



Astrseopora from the Eocene to the recent period §. 



Actinacis from the Lower Cretaceous to the Lower Ohgocene. 



Porites from the Lower Cretaceous to the recent period ||. 



Turbinoseris from the Lower Greensand to the Eocene period. 



Remarks on the Species, and their distribution. 



Thus, out of eighteen genera, six are extinct ; and of the remaining 

 twelve, five are common to the Caribbean and Pacific and East-Indian 

 Coral-faunas. Of the seven still unaccounted for, five are members of 

 the Coral fauna to the west of the continent of America, and two of 

 the Caribbean fauna. 



Only one species, Manicina areolata, is still existing in the Carib- 

 bean Coral-fauna ; and all the others are extinct. 



The reef-building corals amongst the thirty-five species were the 

 Stylophorce, the Styloccenia, the Stephanocoenice, the Astrocoenia, the 

 Ulophyllia, Plocophyllia, Leptoria, Goniastrcea, Solenastrcea, Astrceo- 

 pora, Actinacis, and Porites. 



* Common to the Pacific and West-Indian Coral-faunas. 



t Probably Count Pourtales has met with a species in the West Indies. 



| In the West-Indian Coral-fauna. 



§ In the Pacific and East-Indian Coral-faunas. 



|| Common to the Pacific and West-Indian Coral-faunas. 



