11 Rissoa membranacea.

11 Rissoa membranacea.

The tip of the snout is bifid and unpigmented, yellowish-white.
A bulge at the base of each tentacle bears a black eye with a variably sized, opaque, white, dorsal patch behind it. Shell height 7.4mm. Orkney, Scotland. May 2017. Leg. S. Taylor.

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