Zemitrella subsuturalis is an extinct species of sea snail, a marine gastropod mollusk in the family Columbellidae, the dove snails.

The spire outline is straight, interrupted somewhat by the slightly incised suture.

The embryonic lip is thickened where it passes abruptly into the post-embryonic shell.

The outer lip is thickened within and has a prominent denticle a third the distance from the posterior notch.

Fossils have been found in Tertiary strata near the Ongaonga road.