• Abyssocucumis abyssorum (Théel, 1886)
• Aslia lefevrei (Barrois, 1882)
• Cladodactyla planci Brandt, 1835 accepted as Ocnus planci (Brandt, 1835)
• Cladodactyla syracusana Grube, 1840 accepted as Pseudocnella syracusana (Grube, 1840) accepted as Hemiocnus syracusanus (Grube, 1840)
• Colochirus lacazii Hérouard, 1889 accepted as Aslia lefevrei (Barrois, 1882)
• Cucumaria abyssorum Auctt. non Théel, 1886 accepted as Abyssocucumis abyssorum (Théel, 1886)
• Cucumaria abyssorum Théel, 1886 accepted as Abyssocucumis abyssorum (Théel, 1886)
• Cucumaria arcuata (Hérouard, 1912)
• Cucumaria assimilis Düben & Koren, 1846 accepted as Cucumaria frondosa (Gunnerus, 1767)
• Cucumaria calcigera (Stimpson, 1851) accepted as Pentamera calcigera (Stimpson, 1851)
• Cucumaria communis Forbes & Goodsir in Forbes, 1841 accepted as Thyonidium drummondii (Thompson, 1840)
• Cucumaria compressa (R. Perrier, 1898)
• Cucumaria cucumis (Risso, 1826) accepted as Leptopentacta elongata (Düben & Koren, 1846) accepted as Paraleptopentacta elongata (Düben & Koren, 1846)
• Cucumaria dicquemarii M. Sars, 1857 accepted as Ocnus grubei (von Marenzeller, 1874) accepted as Pseudocnus grubei (von Marenzeller, 1874) accepted as Pseudocnus grubii (von Marenzeller, 1874)
• Cucumaria elongata Düben & Koren, 1846 accepted as Leptopentacta elongata (Düben & Koren, 1846) accepted as Paraleptopentacta elongata (Düben & Koren, 1846)
• Cucumaria frondosa (Gunnerus, 1767)
• Cucumaria glacialis Ljungman, 1879 accepted as Ocnus glacialis (Ljungman, 1879)
• Cucumaria grubei von Marenzeller, 1874 accepted as Pseudocnus grubii (von Marenzeller, 1874)
• Cucumaria hispida (Barrett, 1857) accepted as Echinocucumis hispida (Barrett, 1857)
• Cucumaria hyndmanni (Wyville Thompson, 1840) accepted as Panningia hyndmanni (W. Thompson, 1840) accepted as Panningia hyndmani (Thompson, 1840)
• Cucumaria incurvata (Perrier E., 1886) accepted as Leptopentacta tergestina (M. Sars, 1859) accepted as Paraleptopentacta tergestina (Sars, 1859)
• Cucumaria kirchsbergii Heller, 1868 accepted as Stereoderma kirchsbergii (Heller, 1868)
• Cucumaria Köllikeri Semper, 1868 accepted as Pseudocnus koellikeri (Semper, 1868)
• Cucumaria korenii Lütken, 1857 accepted as Pentamera calcigera (Stimpson, 1851)
• Cucumaria lefevrii Barrois, 1882 accepted as Aslia lefevrei (Barrois, 1882)
• Cucumaria marionii Marenzeller von, 1877 accepted as Neocucumis marionii (Marenzeller von, 1877)
• Cucumaria mauritanica Hérouard, 1929 accepted as Paracucumaria mauritanica (Hérouard, 1929)
• Cucumaria mosterensis Grieg, 1889 accepted as Ocnus lacteus (Forbes & Goodsir, 1839)
• Cucumaria nobilis Ludwig, 1875 accepted as Thyonidium drummondii (Thompson, 1840)
• Cucumaria normani Pace, 1904 accepted as Aslia lefevrei (Barrois, 1882)
• Cucumaria paraglacialis Heding, 1942
• Cucumaria pentactes of Forbes, 1841 non (Linnaeus, 1767) accepted as Leptopentacta elongata (Düben & Koren, 1846) accepted as Paraleptopentacta elongata (Düben & Koren, 1846)
• Cucumaria perspicua Ludwig, 1875 accepted as Thyonidium drummondii (Thompson, 1840)
• Cucumaria saxicola Brady & Robertson, 1871 accepted as Pawsonia saxicola (Brady & Robertson, 1871)
• Cucumaria sluiteri Ohshima, 1915 accepted as Abyssocucumis abyssorum (Théel, 1886)
• Cucumaria syracusana Auctt. accepted as Ocnus syracusanus (Grube, 1840) accepted as Pseudocnella syracusana (Grube, 1840) accepted as Hemiocnus syracusanus (Grube, 1840)
• Cucumaria tergestina Sars M, 1859 accepted as Leptopentacta tergestina (M. Sars, 1859) accepted as Paraleptopentacta tergestina (Sars, 1859)
• Ekmania barthii (Troschel, 1846)
• Hemiocnus syracusanus (Grube, 1840)
• Incubocnus incubans (Cherbonnier, 1972)
• Leptopentacta elongata (Düben & Koren, 1846) accepted as Paraleptopentacta elongata (Düben & Koren, 1846)
• Leptopentacta tergestina (M. Sars, 1859) accepted as Paraleptopentacta tergestina (Sars, 1859)
• Neocnus incubans Cherbonnier, 1972 accepted as Incubocnus incubans (Cherbonnier, 1972)
• Neocucumis atlantica (Ludwig & Heding, 1935) accepted as Neocucumis atlanticus (Ludwig & Heding, 1935)
• Neocucumis atlanticus (Ludwig & Heding, 1935)
• Neocucumis marioni (von Marenzeller, 1878) accepted as Neocucumis marionii (Marenzeller von, 1877)
• Neocucumis marionii (Marenzeller von, 1877)
• Ocnus brunneus (Forbes in Thompson, 1840)
• Ocnus compressus R. Perrier, 1898 accepted as Cucumaria compressa (R. Perrier, 1898)
• Ocnus glacialis (Ljungman, 1879)
• Ocnus grubei (von Marenzeller, 1874) accepted as Pseudocnus grubei (von Marenzeller, 1874) accepted as Pseudocnus grubii (von Marenzeller, 1874)
• Ocnus kirchsbergii (Heller, 1868) accepted as Stereoderma kirchsbergii (Heller, 1868)
• Ocnus koellikeri (Semper, 1868) accepted as Pseudocnus dubiosus koellikeri (Semper, 1868) accepted as Pseudocnus koellikeri (Semper, 1868)
• Ocnus lacteus (Forbes & Goodsir, 1839)
• Ocnus petiti (Cherbonnier, 1957)
• Ocnus planci (Brandt, 1835)
• Ocnus syracusanus (Grube, 1840) accepted as Pseudocnella syracusana (Grube, 1840) accepted as Hemiocnus syracusanus (Grube, 1840)
• Orcula barthii Troschel, 1846 accepted as Ekmania barthii (Troschel, 1846)
• Orcula luminosa Lampert, 1885 accepted as Ekmania barthii (Troschel, 1846)
• Panningia hyndmani (Thompson, 1840)
• Panningia hyndmanni (W. Thompson, 1840) accepted as Panningia hyndmani (Thompson, 1840)
• Paracucumaria hyndmani (Thompson, 1840) accepted as Panningia hyndmani (Thompson, 1840)
• Paracucumaria mauritanica (Hérouard, 1929)
• Paracucumaria thalassae Cherbonnier, 1969
• Paraleptopentacta elongata (Düben & Koren, 1846)
• Paraleptopentacta tergestina (Sars, 1859)
• Pawsonia saxicola (Brady & Robertson, 1871)
• Pentacta calcigera Stimpson, 1851 accepted as Pentamera calcigera (Stimpson, 1851)
• Pseudocnella syracusana (Grube, 1840) accepted as Hemiocnus syracusanus (Grube, 1840)
• Pseudocnus dubiosus (Semper, 1868)
• Pseudocnus dubiosus koellikeri (Semper, 1868) accepted as Pseudocnus koellikeri (Semper, 1868)
• Pseudocnus grubei (von Marenzeller, 1874) accepted as Pseudocnus grubii (von Marenzeller, 1874)
• Pseudocnus grubii (von Marenzeller, 1874)
• Pseudocnus koellikeri (Semper, 1868)
• Pseudocnus köllikeri of Panning, 1949 accepted as Ocnus koellikeri (Semper, 1868) accepted as Pseudocnus dubiosus koellikeri (Semper, 1868) accepted as Pseudocnus koellikeri (Semper, 1868)
• Pseudocnus syracusanus Auctt. accepted as Ocnus syracusanus (Grube, 1840) accepted as Pseudocnella syracusana (Grube, 1840) accepted as Hemiocnus syracusanus (Grube, 1840)
• Staurocucumis abyssorum (Théel, 1886) accepted as Abyssocucumis abyssorum (Théel, 1886)
• Staurocucumis ingolfi Clark & Deichmann, 1936 accepted as Abyssocucumis abyssorum (Théel, 1886)
• Stereoderma incerta Cherbonnier, 1970
• Stereoderma kirchsbergii (Heller, 1868)
• Stereoderma kirschbergi (Heller, 1868) accepted as Stereoderma kirchsbergii (Heller, 1868)
• Thyonidium commune (Forbes, 1853) accepted as Thyonidium drummondii (Thompson, 1840)
• Thyonidium drummondii (Thompson, 1840)
• Thyonidium Dübeni Norman, 1869 accepted as Thyonidium drummondii (Thompson, 1840)
• Thyonidium hyalinum (Forbes, 1841)
• Thyonidium pellucidum Düben & Koren, 1846, non Vahl, 1808 accepted as Ekmania barthii (Troschel, 1846)
• Thyonidium scabrum Sars M, 1868 accepted as Mesothuria intestinalis (Ascanius, 1805)
• Trachythyone elongata (Düben & Koren, 1846) accepted as Leptopentacta elongata (Düben & Koren, 1846) accepted as Paraleptopentacta elongata (Düben & Koren, 1846)
• Uroxia aurantiaca Costa, 1869 accepted as Thyone inermis Heller, 1868