Length 26 mm. Llŷn, North Wales. March 2016.
1: hyponotum (ventral surface of girdle) is covered with conical, outwardly directed scale-like spicules, often some stained brownish.
Row of ctenidia (gills) in rear half of pallial groove on either side of foot.
KEY ID FEATURES and similar species at: 01 Acanthochitona crinita