19 Rissoa parva

19 Rissoa parva

1: translucent metapodial tentacle. 2: slight swelling at base of tentacle bears black eye. 3:  translucent snout coloured yellow by salivary glands and buccal mass pushed forwards. 4: opaque-yellow eye patch. 5: head translucent whitish when salivary glands and buccal mass pushed forwards into snout. Occasional black pigment streak is narrow. H 3.2 mm. Llŷn, Wales March 2015.

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