This series of papers is based on the Bulimulidae collected by dr. P. WAGENAAR HUMMELINCK during several trips to the West Indies, and additional material from several museum collections. The species dealt with in this series have previously been treated in part by several authors and in particular monographically by PILSBRY in the Manual of Conchology (second series, vol. 10-12, 14). Thanks to additional information and access to previously unknown type material, it is now possible to present a revision of this family in the Lesser Antilles and Puerto Rico.