Shell tall, partly disjunctly coiled, poorly calcified with thick yellowish periostracum and reticulate sculpture. The protoconch consists of about 0.4 whorl, of which the initial half is covered by a net-sculpture which halfway to the aperture becomes less distinct and fades away. The diameter is about 200 µm. The teleoconch has about 12 spiral lines between the sutures and 5-7 additional lines on the basal surface. There are 15-20 sharp and straight axial lamellae per whorl, indistinctly crossed by spiral lines and surrounding the whorls completely, although they are lower, more crowded and indistinct in the umbilical area and at the contact surface of the whorls. The cross-section of the whorls is almost circular. The aperture is subradial and orthocline. Dimensions. Height of holotype (best preserved speci¬men) 1.44 mm; maximum height (estimated) 2.8 mm. Radula : n — 4 — 1 - 4 — n, long and slender. The marginal teeth are tall and slender with serrated distal, spoon-like part and a small basal plate. The lateral teeth have interlocking, sturdy shafts, a strong lateral supporting ridge, and a triangular, serrated cutting edge; outermost tooth with broader cutting edge and more coarsely serrated outer side. The central tooth has strong anterolateral ridges, a drawn-out anterior part and strong, serrated cutting plate. Operculum : Round, transparent and colourless, thin and multispiral with short incremental edge, filling the aperture completely.
Remarks. We are not aware of any gastropod to be confused with P. sculpta, except Solutigyra reticulata Waren & Bouchet, 1989, but P. sculpta has higher axial ribs and a radula with three tall, claw-shaped, and slender lateral teeth (cf. Waren & Bouchet 1989: figs 57-58).

Hydrothermal vents. Off Fiji. Lau Basin and North Fiji Basin.