Plesiocystiscus violaceous is a species of very small sea snail, a marine gastropod mollusc or micromollusk in the family Cystiscidae.
Description The length of the shell attains 2.6 mm.
Distribution The species is endemic to São Tomé and Príncipe.Rolán E. & Gori S. 2014. New information on the marginellids of São Tomé and Principe, with new records and the description of four new species. Iberus, 32(1): 1-25.
References
External links Photo of Plesiocystiscus violaceus at MNHN