10 Tonicella marmorea

10 Tonicella marmorea

Girdle and body removed, except transverse muscles that hold valves together. Sublittoral, Orkney. February 2015. Leg. P. Lightfoot per J. Porter.
Valves cleaned and colours fading.
Valves ii, iv and, less consistently, vii often have more dark colour than the other valves.

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