The Seguenziidae, Chilodontidae, Trochidae, Calliostomatidae and Solariellidae of the Philippine Islands

This Visaya Supplement contains descriptions of 1 new genus, 2 new subgenera, 70 new species and 1 new subspecies in the gastropod families Seguenziidae, Chilodontidae, Trochidae, Calliostomatidae and Solariellidae.