Cucumariidae Ludwig, 1894
Ocnus amiculus Cherbonnier, 1988
Ocnus braziliensis (Verrill, 1868)
Ocnus capensis (Théel, 1886)
Ocnus cataphractus (Sluiter, 1901)
Ocnus corbula (Cherbonnier, 1953)
Ocnus corbulus (Cherbonnier, 1953)
Ocnus cylindricus Semper, 1867
Ocnus diomedeae Pawson, 1976
Ocnus glacialis (Ljungman, 1879)
Ocnus grubei (von Marenzeller, 1874)
Ocnus hartmeyeri (Helfer, 1912)
Ocnus javanicus Sluiter, 1880
Ocnus koellikeri (Semper, 1868)
Ocnus lacteus (Forbes & Goodsir, 1839)
Ocnus molpadioides Semper, 1867
Ocnus petiti (Cherbonnier, 1958)
Ocnus planci (Brandt, 1835)
Ocnus pygmaeus Semper, 1867
Ocnus rowei Thandar, 2008
Ocnus surinamensis (Semper, 1868)
Ocnus syracusanus (Grube, 1840) Panning, 1949
Ocnus tantalus Cherbonnier, 1988
Ocnus tantulus Cherbonnier, 1988
Ocnus vicarius Bell, 1883
