Ophiactis resiliens Lyman, 1879

• Island Bay Shelf, ca. 10 fathoms, on rock from sea-bed tangled in fisherman's trawl, July, 1950; C. A. Fleming; two specimens.

Ophiactis profundi Ltk. & Mrtsn., 1899

• Island Bay Shelf. 10 fathoms (as above); five specimens.

Neither of the above species has spines on the disc; they are separable easily by the fact that the former is regularly five-armed, the latter six-armed, and transversely fissiparous, having usually three large and three small arms.