Thala ruggeriaeThala ruggeriae is a species of sea snail, a marine gastropod mollusk, in the family Costellariidae, the ribbed miters.DescriptionThe length of the shell attains 9 mm.DistributionThis marine species occurs off Zanzibar. This species was formerly identified as Thala Exilis by W. O. Cernohorsky in 1978, but several variations between the two were found after since then.