A* anguillensis 
are decidedly larger and thicker than the others. The septa- 
costae are solid and coarse, especially every other one, with 
an intervening smaller one. Synapt icula quite abundant. 
Calicular fossa not deep. Columella papillary. 
Locality: Island of Anguilla, west Indies, P. T. Cleve 
Collector. 
Geologic horizon: Upper Oligocene# 
Type : University of Upsala 
