The yellow-orange dorsal surface of the foot has about six major longitudinal creases on each side with many lesser, connecting, transverse creases, all coloured purple-grey.
1: small, smooth-edged, cephalic lappet at the base of tentacle’s proximal face.
2: translucent, white mantle protruding from aperture rim.
12 Margarites helicinus. Height 4.1mm, diameter 5.2mm. Orkney, Scotland. May 2017. Leg. S.Taylor.
