Ceradocus oxyodus Berents, 1983: 104, figs 3, 4.— Lowry & Stoddart, 2003: 175 (catalogue).—Krapp-Schickel, 2009: 604, figs 5, 6.— Krapp-Schickel & Vader, 2009: 2061 –2065 (key).
Material examined. Northern Territory: 1 female, dissected, 4 slides, NTM Cr015780, Site 1, Export Wharf, Gove Harbour (12°12′18″S 136°40′11″E), 12 June 2001; 1 male specimen,
NTM Cr 018340, Northwest Crocodile Island, off Millingimbi, Arnhem Land (11°41.162′S 134°9.168′E), 2.7m, sand, 3 Dec 2004, coll. R.S. Williams (RW04-37); 1 specimen, NTM Cr 003078, Channel Island, Middle Arm, Darwin Harbour (12°33′S 130°52′23″E), low water mark, coral reef, gravel, sand, clear water, 7 February 1985, coll. J.R. Hanley and C. Hood; 1 specimen, NTM Cr 013572, Stevens Rock, Darwin Harbour (12°29′07″S 130°47′06″E), 5 August 2002; 4 specimens, NTM Cr 011729, 5.5 nautical miles northwest of North Peron Island, Beagle Gulf (13°04′26″S 129°56′06″E), 14 m, coarse sand and shale, 3 October 1993, coll. R.S. Williams, FV Kunmunyah (Beagle Gulf Marine Park Survey); 1 specimen, NTM Cr 018339, west of North Peron Island, Beagle Gulf (13°10′15″S 129°55′37″E), 15 m, coarse sand and shale, 3 October 1993, coll. R.S. Williams, FV Kunmunyah (Beagle Gulf Marine Park Survey); 3 specimens, NTM Cr 015850, North of Vashon Head, Port Essington (11°19′59″S 132°10′E), 20 m, 5 March 1984, coll. NT Fisheries; 1 male specimen dissected, 4 slides, AM P.92243, saline pool at northwest end of McCluer Island (11°02′S 132°58′E), depth unknown, blue sponge and algae, 16 October 1982, coll. A.J. Bruce (NT 49); 9 specimens, AM P.78238, saline pool at northwest end of McCluer Island (11°02′S 132°58′E), depth unknown, blue sponge and algae, 16 October 1982, coll. A.J. Bruce (NT 49); 1 specimen, AM P.78237, Weed Reef, Darwin Harbour (12°30′S 130°48′E), 5 m, coral rubble, 6 July 1993, coll. G.J. Edgar (NT 348); 11 specimens, AM P.78234, patch reef on north side of New Year Island (10°54′S 133°02′E), depth unknown, sponges, 14 October 1982, coll. G.C.B. Poore (NT 15); 4 specimens, AM P.78235, reef on north side of New Year Island (10°54′S 133°02′E), 6 m, coarse sand, 13 October 1982, coll. J.K. Lowry (NT 3); 2 specimens, AM P.78244, west end of Oxley Island (11°00′S 132°49′E), 5 m, nudibranchs and hydroids, 21 October 1982, coll. J.K. Lowry (NT 84); 4 specimens, AM P.77902, west end of Oxley Island (11°00′S 132°49′E), 14 m, rock with encrusting invertebrates, 21 October 1982, coll. G.C.B. Poore (NT 87); many specimens, AM P.78242, west end of Oxley Island (11°00′S 132°49′E), 5 m, with algae, 21 October 1982, coll. J.K. Lowry (NT 82); 2 specimens, AM P.78240, west side of Oxley Island (11°00′S 132°49′E), intertidal sponges, 18 October 1982, coll. J.K. Lowry (NT 69).
Queensland. 3 specimens, AM P.18204, Bowen Jetty, Port Denison (20°3′S 148°15′E), depth unknown, February 1924, coll. E.H. Rainford.
Western Australia, 2 specimens, AM P.83820, Riddell Point, Cygnet Bay, Cape Leveque (16°27′60″S 123°01′42″E), 9.8 m, tuft of red algae, 25 May 2010, coll. L.E. Hughes (MI WA 1121); 4 specimens, AM P.83821, Riddell Point, Cygnet Bay, Cape Leveque (16°27′60″S 123°01′42″E), 9.3 m, dead coral Seriatopora hystrix, 25 May 2010, coll. K.B. Attwood (MI WA 112); 8 specimens, AM P.83822, Jackson Island, Cape Leveque (16°25′05″S 123°06′03″E), 7.4 m, rubble, 27 May 2010, coll. L.E. Hughes (MI WA 1150); 5 specimens, AM P.83823, Jackson Island, Cape Leveque (16°25′05″S 123°06′03″E), 6.7 m, coral rubble, 27 May 2010, coll. K.B. Attwood (MI WA 1156).
Type locality. Casuarina Beach, Lizard Island, Queensland, Australia (14°40.5′S 145°26.6′E).
Distribution. Australia: Lizard Island, Queensland (Berents 1983; Krapp-Schickel 2009). Queensland: Port Denison (current study). Northern Territory: Darwin Harbour; Gove; Port Essington; Beagle Gulf; New Year Island; Oxley Island; Darwin Harbour (current study). Western Australia: Cape Leveque (current study).