Jaminia obtusa – synonym of Chrysallida interstincta
Janolus flagellatus – synonym of Janolus cristatus
Janus spinolae – synonym of Janolus cristatus
Jeffreysia globularis – synonym of Rissoella globularis
Jordaniella nivosa – synonym of Chrysallida nivosa
Jorunna lemchei – synonym of Jorunna tomentosa
Jorunna luisae – synonym of Jorunna tomentosa
Jujubinus aequistriatus – synonym of Jujubinus striatus
Jujubinus altior – synonym of Jujubinus striatus
Jujubinus brugnonei – synonym of Jujubinus striatus
Jujubinus clelandi – synonym of Clelandella miliaris
Jujubinus corallinus – synonym of Jujubinus exasperatus
Jujubinus decipiens – synonym of Jujubinus striatus
Jujubinus defiorei – synonym of Jujubinus striatus
Jujubinus depictus var. funerea – synonym of Jujubinus striatus
Jujubinus depictus var. hieroglyphica – synonym of Jujubinus striatus
Jujubinus depictus var. ligata – synonym of Jujubinus striatus
Jujubinus elenchoides orientalis – synonym of Jujubinus striatus
Jujubinus goniobasis – synonym of Jujubinus striatus
Jujubinus igneus – synonym of Jujubinus exasperatus
Jujubinus istrianus – synonym of Jujubinus exasperatus
Jujubinus magnificus – synonym of Jujubinus striatus
Jujubinus mixtus – synonym of Jujubinus exasperatus
Jujubinus montagui mediterraneus – synonym of Jujubinus montagui
Jujubinus multistriatus – synonym of Jujubinus striatus
Jujubinus propinquus – synonym of Jujubinus striatus
Jujubinus striatus var. monterosatoi – synonym of Jujubinus exasperatus
Jupiteria minuta – synonym of Nuculana minuta