Drillia lithoria Melvill & Standen, 1903 Paradrillia lithoria is a species of sea snail, a marine gastropod mollusk in the family Horaiclavidae, the turrids.

This is a small highly coloured, fusiform species, with a conspicuous, spiral, swollen, nodulous angle just above the centre of the whorls.

The aperture has a square-ovate shape.

The sinus is wide but not deep.

[2] This marine species occurs off Bahrein and in the Persian Gulf.