106 GEOLOGY AND PALEONTOLOGY OF THE WEST INDIES. 



The species from these localities constitute a compact fauna whose 

 closest affinities are in the upper Eocene (Jackson stage) . 



6854. 

 6858. 

 6861. 

 6862. 

 6865. 

 6866. 

 6869. 

 6874. 

 6856. 

 6875. 

 6881. 



LIST OP STATIONS IN ANTIGUA. T. W. VAUGHAN, COLLECTOR. 



Rifle butts. 



Wetherell Point. 



Hodge's Bluff, upper bed. 



Hodge's Bluff, lower bed. 



Two hundred yards east of Jackass Point, St. Johns Bay. 



Across street, north side of cathedral, St. Johns. 



Long Island. 



Blizzard Mill. 



Base and western slope of Friar's Hill. 



Friar's Hill, from white chalky limestone above the main coral-reef bed. 



From bluffs on north side of Willoughby Bay. 



Half a mile north of McKinnon's Mill. 



The exposures at all of these localities are of the Antigua formation, except 6861, the 

 upper bed at Hodge's Bluff. 



The stratigraphic relations of the different fossiliferous exposures in 

 Antigua can not satisfactorily be determined from the mollusks 

 tabulated below, but according to Dr. Vaughan the corals indicate 

 that all the stations in the table except one (station 6861) represent 

 approximately the same horizon and that this is the equivalent of the 

 coralliferous chert bed at Bainbridge, Georgia. The close relationship 

 of the mollusks to the Tampa and Anguilla faunas is apparent. The 

 single specimen of Epitonium antiguense from the upper bed at Hodge's 

 Bluff (station 6861) probably represents a higher faunal horizon than 

 the other mollusks in the table. 



To the small fresh-water fauna described by Brown and Pilsbry 1 

 from the tuffs and shales underlying the main Antigua formation, the 

 Vaughan collection adds one new species, Hemisinus atriformis Cooke. 

 The resemblance of this species to a form inhabiting rivers in British 



1 Acad. Nat. Sci. Philadelphia Proc., pp. 209-213, plate 9. 1914. 



