Stomatolina rubra, common name the red stomatolina, is a species of small sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
The size of the shell varies between 8 mm and 18 mm. The depressed, rather thin shell has a small, conical spire. It is reddish brown, lighter beneath, or variously variegated. The surface is covered with close fine hair-like spiral striae, and with two low keels above the periphery, the upper one nodose. There is a series of short folds below the suture. The whorls of the spire contain a beaded carina. The wide body whorl is depressed, flattened above, convex below, and impressed at the axis. The large aperture is rounded, very oblique, and iridescent within.[1]
This marine species occurs in the tropical Indo-West Pacific and off Korea, the Philippines and Australia (Northern Territory, Queensland, Western Australia)