Onchidoris depressa. L. 4mm. Spicules, transverse on dorsum, oblique on subdorsum, radial on flanks. 6 longitudinal lines of spots on dorsum, and 3 concentric lines on flanks. Ring of unobtrusive yellowish white gills, with ring of brown spots within.

Submitted by Ian Smith on Fri, 23/12/2011 14:50
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I.F. Smith
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LWS, Menai Strait, Sept. 2011.