Rictaxis punctocaelatus, common name Barrel shell or Carpenter's baby bubble, is a species of sea snail, a marine gastropod mollusc in the family Acteonidae.

The shell contains five convex whorls, separated by impressed and narrowly channelled sutures.

The surface is sculptured throughout with spiral equidistant conspicuously punctate grooves, the raised intervals smooth except for a fine engraved line along the middle of each.

The ovate columella is strongly twisted with a spiral fold above and is obliquely truncated at base.

Fossils have been found in Pliocene strata in San Diego Bay.