Ophiomusium relictum Koehler, 1904 .

Figures 28 a, b

Ophiomusium relictum Koehler, 1904; Stöhr, 2011. Ophiomusa relicta Hertz, 1927 .

Syntype RMNH V.Ech. O. 2050.1 Siboga station 156, west of Waigeo, Halmhera Sea, 469 m and station 88, west of Palau, Makassar Strait, 1301m.

Main Features: Disc diameter <9 mm. Disc wrinkled, with large plates standing high from the surface. Large hexagonal central plate, radial shields small, divergent, separated proximally and distally, abutting only at about half length. Interradial plates roughened at edges. Lateral arm plates raised dorsally, with a groove in the dorsal midline. Dorsal plates small, longer than wide. Two ventral arm plates each with a pair of circular exposed tentacle pores. Four small arm spines. Genital slits small, extending between adoral shield and first lateral arm plate.