Amphilepis platytata H.L. Clark, 1911 accepted as Amphilepis patens Lyman, 1879 (original description)
Amphiodia craterodmeta H.L. Clark, 1911 (original description)
Amphiodia macraspis H.L. Clark, 1911 accepted as Amphioplus (Amphioplus) macraspis (H.L. Clark, 1911) (original description)
Amphiodia psilochora H.L. Clark, 1911 accepted as Amphioplus (Amphioplus) psilochora (H.L. Clark, 1911) (original description)
Amphioplus rhadinobrachius H.L. Clark, 1911 represented as Amphioplus (Amphioplus) rhadinobrachius Clark, 1911 (original description)
Amphiura arcystata H.L. Clark, 1911 (original description)
Amphiura carchara H.L. Clark, 1911 (original description)
Amphiura leptodoma H.L. Clark, 1911 (original description)
Amphiura pycnostoma H.L. Clark, 1911 accepted as Amphilepis pycnostoma (H.L. Clark, 1911) (original description)
Anthophiura H.L. Clark, 1911 (original description)
Anthophiura axiologa H.L. Clark, 1911 (original description)
Astrochele laevis H.L. Clark, 1911 (original description)
Ophiacantha adiaphora H.L. Clark, 1911 (original description)
Ophiacantha anchilabra H.L. Clark, 1911 accepted as Ophiacantha vorax Koehler, 1897 (original description)
Ophiacantha atopostoma H.L. Clark, 1911 (original description)
Ophiacantha bathybia H.L. Clark, 1911 (original description)
Ophiacantha cataleimmoida H.L. Clark, 1911 accepted as Ophiophthalmus cataleimmoidus (H.L. Clark, 1911) (original description)
Ophiacantha diplasia H.L. Clark, 1911 (original description)
Ophiacantha diploa H.L. Clark, 1911 accepted as Ophiacantha duplex Koehler, 1897 (original description)
Ophiacantha enneactis H.L. Clark, 1911 (original description)
Ophiacantha eurypoma H.L. Clark, 1911 (original description)
Ophiacantha hylacantha H.L. Clark, 1911 accepted as Ophiophthalmus hylacanthus (H.L. Clark, 1911) (original description)
Ophiacantha lambda H.L. Clark, 1911 accepted as Ophiolimna perfida (Koehler, 1904) (original description)
Ophiacantha lepidota H.L. Clark, 1911 (original description)
Ophiacantha leucosticta H.L. Clark, 1911 accepted as Ophientrema leucosticta (H.L. Clark, 1911) accepted as Ophientrema scolopendrica (Lyman, 1883) (original description)
Ophiacantha macrarthra H.L. Clark, 1911 (original description)
Ophiacantha megatreta H.L. Clark, 1911 accepted as Ophiotoma megatreta (H.L. Clark, 1911) (original description)
Ophiacantha oedidisca H.L. Clark, 1911 accepted as Ophiophthalmus relictus (Koehler, 1904) (original description)
Ophiacantha prionota H.L. Clark, 1911 (original description)
Ophiacantha rhachophora H.L. Clark, 1911 (original description)
Ophiacantha trachybactra H.L. Clark, 1911 (original description)
Ophiactis brachygenys H.L. Clark, 1911 (original description)
Ophiactis dyscrita H.L. Clark, 1911 (original description)
Ophiactis pteropoma H.L. Clark, 1911 accepted as Ophiactis profundi Lütken & Mortensen, 1899 (original description)
Ophiocamax lithosora H.L. Clark, 1911 accepted as Ophioplinthaca lithosora (H.L. Clark, 1911) (original description)
Ophiocamax polyploca H.L. Clark, 1911 accepted as Ophiocamax vitrea Lyman, 1878 (original description)
Ophioconis papillata H.L. Clark, 1911 accepted as Ophiolimna papillata (H.L. Clark, 1911) accepted as Ophiolimna antarctica (Lyman, 1879) (original description)
Ophiocten brevispinum H.L. Clark, 1911 accepted as Ophioleuce brevispinum (H.L. Clark, 1911) (original description)
Ophiocten charischema H.L. Clark, 1911 accepted as Ophioleuce seminudum Koehler, 1904 (original description)
Ophiocten ooplax H.L. Clark, 1911 accepted as Ophiura ooplax (H.L. Clark, 1911) (original description)
Ophiocynodus H.L. Clark, 1911 accepted as Ophioscolex Müller & Troschel, 1842 (original description)
Ophiocynodus corynetes H.L. Clark, 1911 accepted as Ophioscolex corynetes (H.L. Clark, 1911) (original description)
Ophiolebes brevispina H.L. Clark, 1911 accepted as Ophiosemnotes brevispina (H.L. Clark, 1911) (original description)
Ophiolebes diaphora H.L. Clark, 1911 accepted as Ophiosemnotes diaphora (H.L. Clark, 1911) (original description)
Ophiolebes paucispina H.L. Clark, 1911 accepted as Ophiosemnotes paucispina (H.L. Clark, 1911) (original description)
Ophiolebes tylota H.L. Clark, 1911 accepted as Ophiosemnotes tylota (H.L. Clark, 1911) (original description)
Ophioleptoplax H.L. Clark, 1911 (original description)
Ophiologimus H.L. Clark, 1911 (original description)
Ophiomitra acontophora H.L. Clark, 1911 accepted as Ophiacanthella acontophora (H.L. Clark, 1911) (original description)
Ophiomitra bythiaspis H.L. Clark, 1911 accepted as Ophioplinthaca bythiaspis (H.L. Clark, 1911) (original description)
Ophiomitra cardiomorpha H.L. Clark, 1911 accepted as Ophioplinthaca rudis (Koehler, 1897) (original description)
Ophiomitra codonomorpha H.L. Clark, 1911 accepted as Ophioplinthaca codonomorpha (H.L. Clark, 1911) (original description)
Ophiomitra discycla H.L. Clark, 1911 accepted as Ophiurothamnus discycla (H.L. Clark, 1911) (original description)
Ophiomitra microphylax H.L. Clark, 1911 accepted as Ophiacantha placida (Koehler, 1904) (original description)
Ophiomusium multispinum H.L. Clark, 1911 accepted as Ophiosphalma glabrum (Lütken & Mortensen, 1899) (original description)
Ophiomusium trychnum H.L. Clark, 1911 accepted as Ophiomusa trychna (H.L. Clark, 1911) (original description)
Ophiomyxa anisacantha H.L. Clark, 1911 (original description)
Ophiopholis brachyactis H.L. Clark, 1911 (original description)
Ophiopholis longispina H.L. Clark, 1911 (original description)
Ophiophrixus H.L. Clark, 1911 (original description)
Ophiophrura H.L. Clark, 1911 (original description)
Ophiophrura liodisca H.L. Clark, 1911 (original description)
Ophiophthalmus diplasia (H.L. Clark, 1911) accepted as Ophiacantha diplasia H.L. Clark, 1911 (original description)
Ophioplocus japonicus H.L. Clark, 1911 (original description)
Ophiopristis Verrill, 1899 (source of synonymy)
Ophioschiza H.L. Clark, 1911 (original description)
Ophioschiza monacantha H.L. Clark, 1911 (original description)
Ophiostyracium H.L. Clark, 1911 (original description)
Ophiostyracium trachyacanthum H.L. Clark, 1911 (original description)
Ophiothrix macrobrachia H.L. Clark, 1911 accepted as Ophiogymna pellicula (Duncan, 1887) (original description)
Ophiotreta Verrill, 1899 (source of synonymy)
Ophiotrochus longispinus H.L. Clark, 1911 (original description)
Ophiozona polyplax H.L. Clark, 1911 accepted as Ophiozonella polyplax (H.L. Clark, 1911) (original description)
Ophiura atacta H.L. Clark, 1911 (original description)
Ophiura bathybia H.L. Clark, 1911 (original description)
Ophiura calyptolepis H.L. Clark, 1911 (original description)
Ophiura clasta H.L. Clark, 1911 accepted as Ophioplinthus clasta (H.L. Clark, 1911) (original description)
Ophiura cryptolepis H.L. Clark, 1911 (original description)
Ophiura hadra H.L. Clark, 1911 accepted as Amphiophiura superba (Lütken & Mortensen, 1899) (original description)
Ophiura leptoctenia H.L. Clark, 1911 (original description)
Ophiura micracantha H.L. Clark, 1911 (original description)
Ophiura monostoecha H.L. Clark, 1911 (original description)
Ophiura penichra H.L. Clark, 1911 accepted as Amphiophiura penichra (H.L. Clark, 1911) (original description)
Ophiura quadrispina H.L. Clark, 1911 (original description)