Ancilla miserula Yokoyama, 1928 † accepted as Amalda angustata (G. B. Sowerby II, 1859) (original description)
Ancilla okawai Yokoyama, 1923 † accepted as Ancilla albocallosa (Lischke, 1873) accepted as Amalda albocallosa (Lischke, 1873) (additional source)
Arca uwaensis Yokoyama, 1928 † accepted as Hawaiarca uwaensis (Yokoyama, 1928) (original description)
Calliostoma kounjianum Yokoyama, 1928 † (original description)
Cancellaria limata Yokoyama, 1928 † (original description)
Cerithium excelsum Yokoyama, 1928 † accepted as Orectospira shikoensis (Yokoyama, 1928) accepted as Trochocerithium shikoense (Yokoyama, 1928) (original description)
Cochlioconus Yokoyama, 1928 accepted as Thatcheria Angas, 1877 (original description)
Cochlioconus gradatus Yokoyama, 1928 † accepted as Thatcheria mirabilis Angas, 1877 (original description)
Columbella (Atilia) bicinctella Yokoyama, 1928 accepted as Mitrella bicinctella (Yokoyama, 1928) (original description)
Diplodonta kobayashii Yokoyama, 1928 † accepted as Joannisiella kobayashii (Yokoyama, 1928) † (original description)
Drillia astuta Yokoyama, 1928 † accepted as Paradrillia astuta (Yokoyama, 1928) † (original description)
Drillia hyugana Yokoyama, 1928 † accepted as Elaeocyma hyugana (Yokoyama, 1928) † (original description)
Drillia kobayashii Yokoyama, 1928 † accepted as Clavatula kobayashii (Yokoyama, 1928) † (original description)
Erato novemprovincialis Yokoyama, 1928 † accepted as Gibberula novemprovincialis (Yokoyama, 1928) (original description)
Eulima musta Yokoyama, 1928 † accepted as Melanella musta (Yokoyama, 1928) † (original description)
Fusus dualis Yokoyama, 1928 † accepted as Granulifusus dualis (Yokoyama, 1928) † (original description)
Mitra flaccida Yokoyama, 1928 † accepted as Stazzania flaccida (Yokoyama, 1928) † (original description)
Mitra pauciplicata Yokoyama, 1928 † accepted as Latiromitra pauciplicata (Yokoyama, 1928) † (original description)
Pleurotoma declivis f. striatotuberculata Yokoyama, 1928 † accepted as Bathytoma striatotuberculata (Yokoyama, 1928) (original description)
Pleurotoma pervirgo Yokoyama, 1928 † accepted as Nihonia pervirgo (Yokoyama, 1928) † (original description)
Voluta koyuana Yokoyama, 1928 † accepted as Lyria koyuana (Yokoyama, 1928) † (original description)

Japan for Ancilla miserula Yokoyama, 1928 † 
Japan for Arca uwaensis Yokoyama, 1928 † 
Japan for Calliostoma kounjianum Yokoyama, 1928 † 
Japan for Cancellaria limata Yokoyama, 1928 † 
Japan for Cochlioconus gradatus Yokoyama, 1928 † 
Japan for Columbella (Atilia) bicinctella Yokoyama, 1928 
Japan for Diplodonta kobayashii Yokoyama, 1928 † 
Japan for Drillia astuta Yokoyama, 1928 † 
Japan for Drillia hyugana Yokoyama, 1928 † 
Japan for Drillia kobayashii Yokoyama, 1928 † 
Japan for Erato novemprovincialis Yokoyama, 1928 † 
Japan for Eulima musta Yokoyama, 1928 † 
Japan for Mitra flaccida Yokoyama, 1928 † 
Japan for Mitra pauciplicata Yokoyama, 1928 † 
Japan for Pleurotoma declivis f. striatotuberculata Yokoyama, 1928 † 
Japan for Voluta koyuana Yokoyama, 1928 †