Late juvenile. Height 12 mm. At this stage, spire almost enveloped by final whorl, signs of adult shell ridges developing, shell shape approaching that of the adult, but still the juvenile white. Late juvenile shells are often larger than early adults.

Submitted by Ian Smith on Sat, 12/03/2011 18:02
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I.F. Smith

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LWS, Scapa Flow, Orkney April 1975