Kingcrab
the English name of the crabs belonging to the genus Limulus.
They have their body commencing in front with a broad crescent-shaped carapace, with its convexity forward, the whole terminated posteriorly by a long spine-like tail. The kingcrabs are the only representatives of the order and subdivision of Crustacea called Xypho- They are found in the seas and sura. islands of both the Asiatic and American shores of the Pacific Ocean.