« Shell up to ca. 2.6mm in length with mean l/h ratio ca. 1.4; beaks situated towards the posterior ¼, definitely opisthocline. Prodissoconch 360µm in diameter, with distinct, elongate prodissoconch 1 and prodissoconch 2 with definite growth lines. Dissoconch with sculpture of fine commarginal lines and with periostracum forming a few, widely separated radial threads. Anterior part of cardinal platform slightly bent upwards, nearly horizontal; posterior part short, straight and sloping. Lateral teeth well marked, broadly diverging ca. 110° on right valve, narrow and elongate but definite, diverging ca. 130° on left valve. Shell colour brown on prodissoconch, whitish on dissoconch, with yellowish periostracum. » – Gofas & Salas: “A review of European ‘Mysella’ species”, Journal of Molluscan Studies vol. 74(2), Oxford 2008, p. 131.