Descrição original: Verrill A.E. and Bush K.J. (1900). Additions to the marine Mollusca of the Bermudas. Transactions of the Connecticut Academy of Arts and Sciences 10: 513-544., available online at http://www.biodiversitylibrary.org/page/13457318 page(s): 533, pl. 65 fig. 7
Referência: Pimenta A.D., Santos F.N. & Absalão R.S. 2008. Review of the genera Ividia, Folinella, Menestho, Pseudoscilla, Tryptichus and Peristichia (Gastropoda, Pyramidellidae) from Brazil, with descriptions of four new species. The Veliger 50(3)