Alvania schwartzianaAlvania schwartziana is a species of small sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.The specific name schwartziana is in honor of Gustav Franziskus Maria Schwartz von Mohrenstern.DescriptionThe length of the shell attains 3.8 mm.DistributionThis species occurs in the Adriatic Sea off Croatia; also off Greece.