Ophioleuce seminudum Koehler, 1904

Ophioleuce seminudum Koehler, 1904: 33–34, pl. 2(7–10). — Madsen, 1983: 36–45, figs 2–4, 5a–b, 6. — Guille & Vadon, 1986: 169.

Ophiocirce inutilis Koehler, 1904: 13–14, pl. 3(4–5). — Clark, H.L., 1939: 131–132. — Clark, A.M., 1974: 476–477, fig. 14. — Clark, A.M. & Courtman-Stock, 1976: 185–186, figs 198, 202 [according to Madsen, 1983].

Ophiocten charischema Clark, H.L., 1911: 97–98, fig. 35 [according to Madsen, 1983].

Ophioleuce charischema . — Clark, H.L., 1915: 345. — Hertz, 1927b: 109, pl. 9(4).

Ophiocirce mabahithae Mortensen, 1939: 42, figs 3–4, pl. 3(7–8) [according to Madsen, 1983].

STUDY MATERIAL. — MD208: stn DW4886, Walters shoal, Pentes, 33° 17.25´S, 43° 54.89´E to 33° 16.63´S, 43° 55.9401´E, 582– 573 m, 3/5/2017: 2 (MNHN IE.2023.4155) (DNA code= IE.2023.4155) . — MD208: stn DW4891, Walters shoal, Pentes, 33° 10.8´S, 44° 0.97´E to 33° 11.59´S, 44° 0.97´E, 650–653 m, 4/5/2017: 1 (MNHN IE.2016.1355) .

COMPARATIVE MATERIAL EXAMINED. Ophioleuce seminudum Koehler, 1904: MIRIKY/CP3209, entre Nosy-bé et Banc du Leven, 12° 41.87´S, 48° 15.36´E to 12° 42.87´S, 48° 14.22´E, 291–353 m, 29/6/2009, MNHN IE.2023.4004 (DNA code=CP3209a). SAYA / DW5424, SE Saya de Malha, 11° 27.684´S, 62° 0.602´E to 11 ° 28.02´S, 62° 0.546´E, 171– 150 m, 12/11/2022, MNHN IE.2023.4202 (DNA code= IE.2023.4202). SS05/2007/129, Northwestern Australia, Lacepede L 26 transect, 15° 47.568´S, 121° 3.504´E to 15° 48.5´S, 121° 2.883´E, 117– 109 m, 1/7/2007, MV F162612 (DNA code=F162612) .

Distribution. NW Pacific (94–1250 m), W Indian Ocean (73–1073 m), E Indo-W Pacific (50–2084 m), S Africa (573–653 m), S Australia (194–256 m), New Zealand (376–380 m).

Remarks. The discs are 9 (IE.2023.4155) and 5.5 (IE.2016.1355) mm dd. We were unsuccessful in obtaining DNA from these samples.However,two samples from Madagascar (IE.2023.4004) and Saya de Malha(IE.2023.4202) cluster separately from East Indo-West Pacific specimens and possibly represent a cryptic species. If this western Indian Ocean clade is found to extend northwards to the Red Sea, then the name O. mabahithae (Mortensen, 1939) is available.