48 



In comparing the tertiary fauna of the West Indies and the living of the 

 same region, we find the lis! <>!' genera common to both mnch smaller 

 than the preceding one, as the following table, compiled from Dr. Duncan's 

 paper-, will Bhow. A lew additions have been made, based on the examina- 

 tion of fossils collected by Mr. Gabb in San Domingo : — 



Caryophyllia Eusmilia. Lithophyllia. 



Paracyathua Trochosmilia Antillia. 



Trochocyathus. Parasmilia Manicina 



Flabellum. Dichocronia Colpophyllia 



Madracia Euphyllia Stephanocaania 



