Shell solid, subulate. Whorls ten. Colour uniform grey. Sculpture: Ribs low and broad, with narrow interstices, six on the last whorl; spirals are sharp threads running evenly over both ribs and furrows, and increasing by intercalation ; on the penultimate are four spirals, and on the last whorl fourteen, some of which are alternately large and small. Aperture: Sinus U-shaped, rather wide and deep; columella simple; outer lip a thin bent edge; throat grooved within. Length 10 mm., breadth 3 mm.

This has a general likeness to P. fortilirata Smith but has the base less excavate, the spirals more numerous, and the radials fewer and bolder.

Australia. Queensland: 4 to 14 fathoms, Albany Passage (type); off Horsey River; 10 fathoms, Cape Sidmouth.