Both rio cep halidæ

Family of Tape-worms. including forms whose segments remain together so as to make the long tape-worms common in Europe, often 30 feet in man. Bothrio cephalus is the "Ru ian Tape-worm," and has over 3,000 seg Bothriocephalus. ments. Each is short, but as the worm is an inch in width each contains many eggs that escape from a pore on the flat side. The segments are thrown off in groups, and the eggs develop in water; the larvæ make their way into the Pike and other fresh-water fishes, and thus are introduced into the intestine of man.