Melanella debilis is a species of sea snail, a marine gastropod mollusk in the family Eulimidae. The species is one of many species known to exist within the genus, Melanella.
Description (Original description in Latin) The shell is short and subulate, and it is straight. It has seven whorls, which are flattened; the body whorl is elongate and dilated at the base. The aperture is ovate; the outer lip is thin and scarcely curved; the outer lip has a produced and arched margin. The shell is semipellucid, thin, and glassy in texture.
Distribution This species occurs in the Sea of Japan.
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