Ophiosphalma spinigerum (Mortensen, 1933)

Baker, Alan N., 2016, An illustrated catalogue of type specimens of the bathyal brittlestar genera Ophiomusium Lyman and Ophiosphalma H. L. Clark (Echinodermata: Ophiuroidea), Zootaxa 4097 (1), pp. 1-40 : 35

Ophiosphalma spinigerum (Mortensen, 1933) .

Figures 59 a, b.

Ophiomusium spinigerum Mortensen, 1933

Holotype ZMUC OPH- 332, Dana Expedition, St Helena Id, mid-Atlantic, 2400–2780 m.

Main Features: Disc high centrally, many small imbricating scales. Radial shield large and separated. Thin spinelets at interradial edge. Arms very tubular, dorsal arm plates diamond- shaped, dorsal and ventral arm plates throughout arms. Three pairs of exposed tentacle pores the first pore has one large and 4 small scales, the remaining two pore have 2 scales, one large, one small. Oral papillae slightly separated. Genital slits long with thin bordering papillae.