Length 32 mm. LWS. Isle of Lewis, Scotland. April 2018. Leg. D.W. McKay & S.Taylor.Head (1) and foot only fractionally protrude into view when girdle is raised at the anterior to admit inhalent water to the ctenidia (2) in the peripheral mantle cavity.
Between the mantle cavity and hyponotum (3) the mantle fold (4) is unobtrusive, except where it widens near the posterior into a mantle lappet (5) that may partly conceal the ctenidia.

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