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A History of the County of Somerset
… transverse rows. The tracheal openings lie immediately in front of the spinners. The tarsal claws are two in number, … of crustacean, small or large, common or rare. The massive front claws or chelipeds of the lobster and crayfish give … till lately regarded as a character of the family that the front legs should be simple, but a French author, M. Maurice …