Asthelys

Asthelys is a genus of sea snails, marine gastropod mollusks in the family Seguenziidae.

Description
The conical shell lacks axial riblets and a peripheral carina but has a punctate microsculpture. The midwhorl angulation is initially absent, but present on later whorls. The shell contains no spiral lirae. The U-shaped posterior sinus is shallow. The basal sinus is present, but there is no anterolateral sinus. The columella has no sinus or tooth. Tha aperture has a rhomboidal shape. There is no umbilical septum.

Radula: the rachidian tooth is broader than high and has lateral wings prominent. The lateral tooth cusp is broad. There are less than 10 marginal tooth pairs.

Species
Species within the genus Asthelys include:
 * Asthelys antarctica Marshall, 1988
 * Asthelys careyi Geiger, 2017
 * Asthelys depressa Marshall, 1991
 * Asthelys hyeresensis Hoffman, Gofas & Freiwald, 2020
 * Asthelys munda (Watson, 1879)
 * Asthelys nitidula Marshall, 1991
 * Asthelys semiplicata Marshall, 1991
 * Asthelys simplex (Watson, 1879)