08 Rissoa membranacea.

08 Rissoa membranacea.

The whitish, translucent flesh is is extensively covered by various shades of grey to brown-black pigment dorsally with opaque white spots.
Apart from the snout which is darkest laterally, the sides of the body are pigmented less intensely than the dorsum, and there is a translucent, whitish, slender triangle dorso-laterally (1) that tapers towards the posterior.
On darker specimens, such as this, the surface pigment may partially obscure the opaque, white anterior pedal gland (2) . The whitish mantle is often brownish near its edge (3) and greyish where it forms the posterior of the mantle cavity roof (4) .  Shell height 8.3 mm. Orkney, Scotland. May 2017. Leg. S. Taylor.

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