The valve of this taxon is linear and narrows. It has rounded ends and a straight axial area that narrows at the ends and center. The raphe is straight and narrows and the ends. The proximal ends curve in oppposite directions and the distal ends are bifurcate. It has a small circular area anda marginal longitudinal band. The longitudinal band is wide and has coarse puncta. The striae are parallel and convergent at the ends (Patrick and Reimer 1966).