Ophiomusium tripassalotum H. L. Clark 1917 .
Figures 36 a, b, c
Ophiomusium tripassalotum Clark, 1917, 1941 .
Holotype USNM E636, Albatross station 3690, Taumotu Archipelago, 1485 m.
Main Features: Disc tumid dorsally, flat ventrally. Plates smooth with higher distal margins and weak sutures. Radial shields large and separated only at the extreme distal and proximal ends. Dorsal and ventral arm plates throughout arm, dorsal plates thickened on radial side.
Three stout arm spines clumped low down on lateral arm plates. Two pairs of exposed tentacle pores with large oval scales.