Length 26 mm. Llŷn, North Wales. March 2016.
Dorsal surface of girdle (1) has 18 tufts of long (0.6 to 1.0mm) bristles (2) which may be colourless or tinted orange, red or purple; arranged one tuft at each valve intersection, and four around head valve. Bristles do not to grow as fast as body, so appear relatively shorter on large specimens.

KEY ID FEATURES and similar species at: 01 Acanthochitona crinita