Cucumariidae Ludwig, 1894
Pseudocnus alcocki (Koehler & Vaney, 1908)
Pseudocnus astigmatus (Wells, 1924)
Pseudocnus californicus (Semper, 1868)
Pseudocnus cornutus (Cherbonnier, 1941)
Pseudocnus curatus (Cowles, 1907)
Pseudocnus dubiosus (Semper)
Pseudocnus echinatus (von Marenzeller, 1881)
Pseudocnus goreensis (Cherbonnier, 1949)
Pseudocnus intermedia (Théel, 1886)
Pseudocnus kollikeri
Pseudocnus laevigatus (Verrill, 1876)
Pseudocnus lamperti (Ohshima, 1915)
Pseudocnus leoninoides (Mortensen, 1925)
Pseudocnus leoninus (Semper, 1868)
Pseudocnus lubrica (Clark, 1901)
Pseudocnus marionensis (Théel, 1886)
Pseudocnus pawsoni Won & Rho, 1998
Pseudocnus perrieri (Ekman, 1927) Panning, 1963
Pseudocnus rhopalodiformis (Heding, 1943)
Pseudocnus rugosus Cherbonnier, 1957
Pseudocnus sentus O'Loughlin & Alcock, 2000
Pseudocnus serrata (Théel, 1886)
Pseudocnus spinosus (Ohshima, 1915)
Pseudocnus thandari Moodley, 2008
