Length 59 mm, height 17 mm, breadth 10 mm. Shell elongated, with rostrate posterior portion. Beaks small, anterior to the middle, erect. Anterior margin round, posterior portion knife-blade like in shape. Ventral margin with a step a little behind below the beak. Surface white, with growth lines, covered with yellowish periostracum. Cardinal teeth, fine, taxodont. Chondrophore below the umbo, longitudinally elongated, with a concavity near the middle. Interior white, shining, with smooth ventral margin.