74 



ENTOZOA FOUND IN MAN. 



Chapter VI. 

 THE T^NIA SOLIUM. 



The small intestine is the ordinary habitat of the 

 ■p- -[^g 1 taenia solium, but when the worm is 

 very long it may even extend into the 

 large intestine. 



The position of the worm is such 

 that its anterior portion is most 

 usually situated near the pylorus ; 

 the head of the worm is imbedded in 

 the wall of the intestme, and it will 

 always be found m this position un- 

 less a considerable period has elapsed 

 after death before the body is exa- 

 mined. 



This mode of attachment to the 

 intestinal wall explains why the ante- 

 rior portion, with the head, of the 

 taenia is never dislodged by the un- 

 aided efforts of the intestine, although 

 large-sized pieces are often expelled 

 spontaneously after their separation 

 from the head. 



The taenia solium, as is implied by 

 its name, is usually single ; but cases 

 are occasionally observed, in which two, three, or 



^ Fig. 13. Taenia Solium Armata (of the natural size). Frag- 

 ments taken at certain distances between the head and the 

 posterior rings, in order to show the successive form of these 

 rings ; the order of the letters indicates their arrangement from 

 before backwards. 



