Note: Information is dated. Do not rely on it.Lobster. A familiar invertebrate animal belonging to the group Crustacea, and inhabiting the sea. Lobsters are found in great numbers about many European shores; they are also quite numerous on the coasts of North America. The body of the lobster is composed of two principal divisions, popularly termed head and tail: the forer, however, which is technically called the cephalothorax, is constituted (as the name implies) by both head and thorax; the tail is the abdomemen. The body carries twenty pairs of appendages, consisting of feelers, jaws, claws, legs, etc. The nervous system consists of a chain of ganglia placed along the under surface. The stomach and the intestines form a long and straight canal. Lobsters are extremely combative, and fight furiously, the vanquished party sometimes leaving one of its limbs in its opponent's grasp.