Bentharca decorata Hayami & Kase, 1993 accepted as Acar decorata (Hayami & Kase, 1993) (original description)
Bentharca excavata Hayami & Kase, 1993 accepted as Arca navicularis Bruguière, 1789 (original description)
Bentharca irregularis Hayami & Kase, 1993 accepted as Xenophorarca irregularis (Hayami & Kase, 1993) (original description)
Bentharca tenuis Hayami & Kase, 1993 accepted as Xenophorarca tenuis (Hayami & Kase, 1993) (original description)
Cardita uruma Hayami & Kase, 1993 accepted as Cardita kyushuensis (Okutani, 1963) (original description)
Carditella iejimensis Hayami & Kase, 1993 (original description)
Carditella shimojiensis Hayami & Kase, 1993 accepted as Carditopsis shimojiensis (Hayami & Kase, 1993) (original description)
Chlamydella incubata Hayami & Kase, 1993 accepted as Cyclochlamys incubata (Hayami & Kase, 1993) (original description)
Chlamydella tenuissima Hayami & Kase, 1993 accepted as Cyclochlamys tenuissima (Hayami & Kase, 1993) (original description)
Coralliophaga hyalina Hayami & Kase, 1993 accepted as Coralliophaga coralliophaga (Gmelin, 1791) (original description)
Cosa kinjoi Hayami & Kase, 1993 (original description)
Cosa uchimae Hayami & Kase, 1993 (original description)
Cosa waikikia (Dall, Bartsch & Rehder, 1938) accepted as Limopsis waikikia Dall, Bartsch & Rehder, 1938 (new combination reference)
Cratis kanekoi Hayami & Kase, 1993 (original description)
Cratis ohashii Hayami & Kase, 1993 (original description)
Ctenoides minimus Hayami & Kase, 1993 accepted as Ctenoides annulatus (Lamarck, 1819) (original description)
Cyclopecten ryukyuensis Hayami & Kase, 1993 (original description)
Dacrydium zebra Hayami & Kase, 1993 (original description)
Divarilima elegans Hayami & Kase, 1993 (original description)
Epicodakia pygmaea Hayami & Kase, 1993 accepted as Ctena delicatula (Pilsbry, 1904) (original description)
Glossocardia Stoliczka, 1870 (additional source)
Halonympha asiatica Hayami & Kase, 1993 (original description)
Huxleyia cavernicola Hayami & Kase, 1993 (original description)
Isolimea limopsis (Nomura & Zinbo, 1934) accepted as Limea limopsis (Nomura & Zinbo, 1934) (basis of record)
Kelliella japonica Hayami & Kase, 1993 (original description)
Limatula kinjoi Hayami & Kase, 1993 (original description)
Nipponolimopsis dautzenbergi (Prashad, 1932) (basis of record)
Parvamussium crypticum Hayami & Kase, 1993 accepted as Parvamussium carbaseum Dijkstra, 1991 (original description)
Parvamussium decoratum Hayami & Kase, 1993 (original description)
Pronucula insignis Hayami & Kase, 1993 accepted as Nucula insignis (Hayami & Kase, 1993) (original description)
Pycnodonte taniguchii Hayami & Kase, 1992 (additional source)
Rochefortina sandwichensis (E. A. Smith, 1885) (additional source)
Salaputium unicum Hayami & Kase, 1993 accepted as Salaputium sublamellatum (Kobelt, 1885) (original description)
Urumella Hayami & Kase, 1993 (original description)
Urumella concava Hayami & Kase, 1993 (original description)
Venerupis irus (Linnaeus, 1758) sensu Yokoyama, 1924 accepted as Irus ishibashianus Kuroda & Habe, 1952 (basis of record)