Girdle of Lepidochitona cinerea has a unique (in N.W. Europe) lozenge pattern; its elements are:
Alternating dark and light transverse lozenge-like bands of approximately equal size.
1: narrow waist of dark band interlocking with bulging waist of pale band (sometimes colours interchanged).
2: central dark spot on pale band, and white spot somewhere on dark band (in this case, near margin).
3: pale grey (or whitish or pale brown) longitudinal line often runs across, or near to, the waists of bands.
Menai Strait, Wales. February 2011.