The Conchological Society of Great Britain and Ireland

Oxychilus diductus (Westerlund, 1886) is redescribed. The species is the only one of the genus Oxychilus living in the Pelagian Islands, an archipelago off the northern coast of Tunisia, and is endemic to Lampedosa. O. diductus can be identifed by draparnaudi-like anatomy and shell depressed, discoidal, not "polygyrate", with umbilicus wide and external surface irregularly striated, opaque and with finely granulated microsculpture.