. A manual of zoology. Zoology. 2S8 PL A TnELMINTHES. Head Uterus Length (n) of the worm and (/)) of the ripe proglottids Character of Cystioercus Occurrence of Cysticercus 1 With rostel- lum and circle of hooks (26 in 2 rows); 4 weak suckers 1 Each side with 7-9 large branched pouches a. 10 feet, /). 9-11 mm. long, 6-7 mm. broad 9-20 mm., with abundant fluid In pigs, occa- sionally in muscles, brain, and eyes of man, rarely in other mammals -â 2 ^1 No rostellum; no hooks ; 4 strong suckers 5 Each side with 20-30 delicate little branched pouches a. 20 to 25 feet and more, b. 18-20 mm. long, 5-
. A manual of zoology. Zoology. 2S8 PL A TnELMINTHES. Head Uterus Length (n) of the worm and (/)) of the ripe proglottids Character of Cystioercus Occurrence of Cysticercus 1 With rostel- lum and circle of hooks (26 in 2 rows); 4 weak suckers 1 Each side with 7-9 large branched pouches a. 10 feet, /). 9-11 mm. long, 6-7 mm. broad 9-20 mm., with abundant fluid In pigs, occa- sionally in muscles, brain, and eyes of man, rarely in other mammals -â 2 ^1 No rostellum; no hooks ; 4 strong suckers 5 Each side with 20-30 delicate little branched pouches a. 20 to 25 feet and more, b. 18-20 mm. long, 5-7 mm. broad 4-8 mm., tough, with ! Cattle little fluid Many other TcenicB, which are common to other mammals, occur occa- sionally in the human intestine. In mice and rats occur T. (Hyynenolejjis) murina and T. diminuta (= lejytocephala). The first (identical with T. nana) has recently been very abundant in human intestines in Italy. The worm, an inch or two long, may occur in thousands and cause severe in- jury. This species may develop without an intermediate host; the eggs taken into the stomach pass the cysticercoid stage in its walls and thence to the intestine to become adult. T. diminuta {= fiavopunctata), which has insects for its intermediate host, has been described from man. Other species occur in the tropics. B. Forms passing the cysticercus stage in man. Besides the cysticercus of T. solium that of T. acanthotrias (possibly identical with T. solium) has been found in man. More frequent and of more im- portance to the physician is the cysticercus of Tania echinocoixus (fig. 253), which lives as an adult in the dog, and is easily overlooked on ac- count of its size. It is at most 5 mm. (\ inch) long and consists of a soolex and three or four pro- glottids. The scolex bears four suckers and hooks on the rostellum. When the eggs are taken into the human stomach, as may easily happen by stroking and kissing infected dogs, the embryos are set free and wander
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