Petta investigatoris Zhang, Hutchings & Kupriyanova, 2019 Fig. 20A-C

Diagnosis.

Cephalic veil completely free from operculum, with smooth or bearing several lappets (slightly raised mounds) anterior margin. Operculum semi-circular with smooth dorsal and lateral margins. Ventral margin of operculum with a transverse row of numerous stout notopodial paleae on each side. Two pairs of comb-like branchiae on segments 3 and 4, consisting of large basal hump and series of well separated free lamellae. Pair of dorso-lateral pads on segment 5. Ventro-lateral lobes with continuous row of papillae on segment 3. Notopodia with paleae on segment 1 and with notochaetae on segments 5-21 (17 pairs). Neuropodia present on segments 8-21,> 14 pairs with transverse tori, each with a row of uncini. Scaphe indistinctly separated from posterior segments.

Remarks.

Type locality is Jervis Marine Park, eastern Australia, 2650-2636 m.

Records.

6 specimens. Suppl. material 1: ops. 4, 11, 22, 35, 56 (AM).