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DescriptionThe carapace of Liocarcinus arcuatus is as long as it is broad (up to 30 mm in length and 30 mm in breadth), with 5 sharp teeth posterior to the eyes on each side. The frontal margin between the eyes is hairy and without teeth. The carapace is gently convex with minute transverse ridges. It is brown in colour and the limbs are somewhat paler.