Length 8.6 mm.
1: Intermediate valves (ii to vii) lack any sign of a beak.
2: Usually a few strong growth lines clearly visible on all valves.
3: Girdle flexed up at posterior to allow release of faeces, excreta and ova or sperm.
4: Rare glimpse of foot on live animal; can only be examined if animal removed from substrate, or placed on glass.
Llŷn, North Wales. March 2016.

KEY ID FEATURES and similar species at: 02 Leptochiton cancellatus