Clathurella bulleni Preston, 1904 (original description)
Coralliophila dissimulans Preston, 1904 accepted as
Pascula ozenneana (Crosse, 1861) (original description)
Cythara nevilliana Preston, 1904 accepted as
Eucithara nevilliana (Preston, 1904) (original description)
Mactra delicatula Preston, 1904 accepted as
Mactra cuneata Gmelin, 1791 (original description)
Mactra delicatula var. nivea Preston, 1904 accepted as
Mactra cuneata Gmelin, 1791 (original description)
Mactra taprobanensis Preston, 1904 accepted as
Mactra lilacea Lamarck, 1818 (original description)
Mucronalia birtsi Preston, 1904 accepted as
Stilifer birtsi (Preston, 1904) (original description)
Murex (Ocinebra) sykesi Preston, 1904 accepted as
Favartia sykesi (Preston, 1904) (original description)
Nassa (Phrontis) gangetica Preston, 1904 accepted as
Nassarius subconstrictus (G. B. Sowerby III, 1899) (original description)
Nassa (Phrontis) siva Preston, 1904 accepted as
Nassarius jacksonianus (Quoy & Gaimard, 1833) (original description)
Styloptygma lacteolum Preston, 1904 (original description)
Thala ceylanica Preston, 1904 accepted as
Thala jaculanda (A. Gould, 1860) (original description)