Cuthona nana. Length 6mm. Part grown, so cerata do not extend in front of rhinophores. On Hydractinia echinata on shell of Hermit crab on shore with rocks and muddy sand. LWS, Menai Strait, Wales. March 2010.

Submitted by Ian Smith on Tue, 29/03/2011 19:46
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I.F. Smith

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