Corystes

Genus of crabs

Corystes cassivelaunus, the masked crab, helmet crab or sand crab, is a burrowing crab of the North Atlantic and North Sea from Portugal to Norway, which also occurs in the Mediterranean Sea. It may grow up to 4 centimetres or 1.6 inches long. The name "masked crab" derives from the patterns on the carapace which resemble a human face, in a similar manner to heikegani. It is the only species in the genus Corystes.

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