Hayamiella undetermined

Hayamiella? sp. Plate 7: figs 11, 12 1997 Neritopsis sp. 1 – Hägele: 58, fig. p. 58, upper left, pl. 7, fig. 5. Material. 2 specimens, illustrated specimen SNSB – BSPG 2016 XXI 1778. Description. Shell neritiform, low-spired, apex almost flat, barely protruding last whorl in lateral view; larger shell 11 mm wide; wide ramp is inclined towards whorl axis; ornament of last whorl consists of 5 strong spiral cords approximately equally spaced; approximately 10 strong, widely spaced axial ribs run from adapical suture to center of base; intersections of strong spiral cords and axial ribs nodular; several weak spiral cords on ramp and between two strong spiral cords of rest of shell; intersections these weak spiral cords with axial ribs lack nodes; aperture unknown. Remarks. Neritopsis cottaldina d’Orbigny, 1852 as illustrated by Loriol in Loriol and Bourgeat (1886–1888, figs 3–4, non figs 1–2, 5) resembles Hayamiella? sp. 1, but has a distinctly elevated spire and more axial ribs per whorl.