19 Trivia arctica

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1: anterior of foot bilaminate, contains anterior pedal gland that produces copious mucus to assist locomotion.
2: sole coloured as dorsum of foot but without opaque marks.
3: median groove of sole contains mucus-producing posterior pedal gland.

Height (longest shell-dimension) 9mm. Menai Strait, Wales. March 2014.

Imprint

Photographic guide to the identification and biology of European marine invertebrates

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