Two B. ruber, lengths 12 mm & 14.5 mm. North Yorkshire. September 2014. Leg. P. Lightfoot.
Dorsal surface of valves pink to brick red with patches and streaks of cream and light brown.
Girdle usually has reddish/pinkish bands alternating with pale bands. Pale bands, often fragmentary, usually thinner than reddish/pinkish bands, and roughly in line with shell-sutures.

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