The gastropod Sediliopsis riosi Tippett, 1995 (Gastropoda: Conoidea: Pseudomelatomidae) in Uruguayan waters and the mistaken localities of Chilean Strebel's Drillia species

Abstract

A total of 23 empty shells deposited in the invertebrate collectionof Museo Argentino de Ciencias Naturales "BernardinoRivadavia" identified by previous authors as Drillia suxdorfi Strebel, 1905 and D. janseni Strebel, 1905 were examined.Details of the ornamentation and protoconch led to the conclusionthat the material represents Sediliopsis riosi Tippett,1995, the only living species of the genus described from Brazil.This is the first report from Uruguayan waters, constituting thesouthernmost record of the genus. All these specimens werepreviously wrongly identified as the northernmost localities ofChilean Drillia in the local literature.