Amphithalamus latisulcusAmphithalamus latisulcus is a species of minute sea snails, marine gastropod molluscs or micromolluscs in the family Anabathridae.DescriptionThe length of the shell attains 1.34 mm, its diameter 0.76 mm.DistributionThis species is endemic to New Zealand and occurs off the North Island, and South Island as far south as Dunedin.