Bathoxiphinae

Souza, Leonardo S., Caetano, Carlos Henrique S., Scarabino, Fabrizio & Costa, Paulo Márcio S., 2020, New records and a new species of Scaphopoda (Mollusca) from the southwestern Atlantic Ocean, Iheringia, Série Zoologia (e 2020023) 110, pp. 1-12 : 2

Bathoxiphinae

Diagnosis. Shell narrow, slender, evenly expanding, slightly curved when adult, sometimes with keel, compressed laterally, elliptic or oval in section, upper 2/3 of shell very thick. Longitudinal sculpture poorly developed, transverse sculpture represented by oblique growth lines and sometimes by ring-like bulges.Apex with wide anterior (formerly dorsal, concave side) groove or cut diagonally towards to posterior (formerly ventral, convex side) side. Epipodial appendages less than 1/3 of channel when foot screwed. Pavilion and subpavilion of the same length. Central radular teeth with spoon-like anterior plates with three denticles facing up. Lateral teeth elongated with large tips bent backwards and three median cusps, M1 small, rarely absent (adapted from CHISTIKOV, 1983).

Remarks. Bathoxiphinae was introduced as a subfamily of Entalinidae and comprises three genera: Bathoxiphus Pilsbry & Sharp, 1897 (four species), Rhomboxiphus Chistikov, 1983 (three species) and Solenoxiphus Chistikov, 1983 (monotypic) ( STEINER & KABAT, 2001; MOLLUSCABASE, 2018a), and only the former is known from the Atlantic. As the original diagnosis of the subfamily is in Russian, a translated version is presented here for wider dissemination.