Characteristics: Maximum reported size: 41 mm. The shell exterior is usually dirty-cream colored, usually speckled with shades of brown. The interior is white at the margins but greenish elsewhere, with paler bands. A thin brown line usually borders the green internal callus. The soft parts of the animal are mostly yellow, with many olive-brown or purple-brown thin lines on the head and flanks. Similar color can be seen on the yellow tentacles.