24 



GEOLOGY AND PALEONTOLOGY OF THE WEST INDIES. 



to which a specimen belongs. A few of the genera are noted here for 

 later comparisons. 



In general the Foraminifera show the faunal sequence already pub- 

 lished by Vaughan. 1 The presence in St. Bartholomew of two species 

 of Orthophragmina and associated Nummulites seems undoubtedly to 

 indicate upper Eocene as the age of the St. Bartholomew limestone. 

 The presence in Antigua of abundant specimens of large species of 

 Lepidocyclina, as large as or larger than any species hitherto described, 

 and the absence of Orthophragmina seem clearly to indicate an Oligo- 

 cene age; while Orbitolites (Sorites) duplex from Anguilla and St. 

 Martin seems to indicate a still younger horizon. 



One of the species of Orthophragmina from St. Bartholomew appears 

 to be close to a species already described from Marianna, Florida 

 (0. mariannensis), but none similar to the other has yet been found 

 on the continent. Nearly all the larger species are believed to be 

 undescribed and should furnish excellent means of correlation with 

 other West Indian or continental geologic formations. 



The following table of species from the four islands contains the 

 station numbers, the full data for which are given in the distribution of 

 each species: 



1 Vaughan, T. W. Study of the stratigraphic geology and of the fossil corals and associated 

 organisms in several of the smaller West Indian Islands. Carnegie Inst. Wash. Year Book 

 No. 13, pp. 358-360, 1914. 



