Ophiosphalma atlanticum (Hertz, 1927) .

Figures 43 a, b

Ophiomusium fimbriatum var atlanticum Hertz, 1927 .

Syntype, ZMUC, from Valdivia station 63, Gulf of Guinea, 2492 m.

Main Features: Hertz’s variety atlanticum has dumbbell-shaped oral shields, no disc granules, and multiscaled exposed tentacle pores on the first 3 segments. 7 arm spines. The genital slits extend to the distal end of the second arm segment. The syntype of O. fimbriatum var atlanticum I observed in the ZMUC is 19 mm d.d. I here elevate the variety to a separate species: Ophiosphalma atlanticum (Hertz) .