Small (L to 5.2 mm), subcircular, inflated. Colour white or yellow¬ish. Sculpture of diverging, curved, radial ribs prominent to anterior and posterior but are subdued or absent in middle parts of shell. Ribs crossed by closely spaced, narrow, low, commarginal lamellae that are aligned obliquely to the ventral shell margin. Radial ribs with small scales where crossed by commarginal lamellae. Early parts of shell relatively smooth. Protoconch PI ca 88 µm, P2 ca 170 µm with growth increments. Lunule broadly lanceolate, smooth. Ligament largely internal, short, set on oblique resilifer. Hinge: right valve with single cardinal tooth and prominent anterior and posterior lateral teeth; left valve with two cardinal teeth, the anterior larger and sockets for anterior and posterior lateral teeth. Anterior adductor muscle scar, short, broad, ventrally detached from pallial line for ca. 15 % of length, posterior scar ovoid. Pallial blood vessel scar visible. Pallial line discontinuous in small blocks. Shell margin dentate, coarser towards anterior and posterior.

The obliquely inset internal ligament indicates placement in the Loripes group of genera and while the external sculpture resembles Rugalucina in radial ribbing the obliquely aligned commarginal lamellae are similar to that seen in Lucinella divaricata (Linnaeus, 1758) from the eastern Atlantic but that species lacks any radial ribbing.

Distribution. Known from the northern Arabian Sea and southern India. Probably more abundant in the northern Indian Ocean but unrecognised. Type locality. Karachi, Pakistan, 20-30 fathoms (36-55 m).