Ophioglypha inornata Lyman, 1878 — $ Koehler 1906b: 262–263;
Homalophiura inornata (Lyman, 1878) — Mortensen 1927a: 231;
Ophiura inornata (Lyman, 1878) — $ A.H. Clark 1948: 78;
Ophiurolepis inornata (Lyman, 1878) — Paterson 1985: 138–139, fig. 53; Smirnov et al. 2014: 206.
Type locality: off S. Paulo Rocks (1°47’N, 24°26’W).
See: Lyman (1878: 97, pl. 2, figs. 26–27); Paterson (1985); Martynov & Litvinova (2008: 85–7, figs. 6G).
Occurrence: cosmopolitan, recorded in the Pacific, Indian and Atlantic; in the Atlantic from South America, Falkland Islands, Caribbean, Saint Paul Rocks, eastwards to off Cape Blanc (NW Africa), including the Azores (Paterson 1985).
Depth: 242– 3,385 m (Lyman 1878, Mortensen 1936); AZO: 2,995 –3,200 m (Koehler 1906b, A.H. Clark 1948).
Habitat: soft sediments (Globigerina ooze; Lyman 1878).
Larval stage: non-brooding, direct or lecithotrophic development (Mortensen 1936).
Remarks: the presence of O. inornata in the Azores was first reported by Koehler (1906b; Talisman, sta 131, 1883: 38°28'N, 25°05'46"W, 2995 m). Later, A. H. Clark (1948) also identified material belonging to this species from the Azores, but referred to it as from west of Gibraltar (Atlantis sta 15: 35°37'N, 30°51' W; 3,200 m).