Liotia acuticostata Carpenter, 1864 Lirularia acuticostata, common name the sharp-keeled lirularia, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.

The small, white shell has a subglobose shape.

The body whorl contains about 6 equal spiral cords.

The conspicuous outer lip is little contracted.

[3] This marine species occurs off the coast of Sitka, Alaska to the southern Californian coast.