Hiatella arctica. Adult. Two worn radial ridges just visible. Periostracum thin, but prominent, as wrinkled, on contracted siphons. Wedge form modified by rounding and undulation; shape reminiscent of Modiolus mussle. Menai, March 2010.

Submitted by Ian Smith on Fri, 18/11/2011 20:22
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I.F. Smith
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