28 



ENTOZOA FOUND IN MAN. 



Ym. 0.1 



direction ; they present a thickening which is most 

 marked near the centre of the ring, and they are 

 sometimes perforated ; the reproductive organs are 

 situated about the median hne. 



The bothriocephakis latus pro- 

 bably attains to a greater length 

 than any other cestoid worm. Its 

 rings do not become separated into 

 cucurbitini like those of the Taenia 

 solium, so that the posterior seg- 

 ments are often found still adherent 

 to the strobile after the ova have 

 been deposited ; the discharge of 

 the ova is usually effected by the 

 rupture of the sides of the womb, 

 and hence it frequently happens 

 that the rings are perforated ; 

 sometimes the rings are divided 

 longitudinally and constitute two 

 laternal cords presenting a tail-like 

 appearance, and at other times they 

 are shrivelled up. As the bothrioce- 

 phakis does not give off any cucur- 

 bitini, it breaks up into pieces which 

 are almost always of considerable 

 size, and which are only discharged from the intestines 

 at distant intervals. 



^ Description of Figure 6. — The bothriocephalus latus, of the 

 natural size, the fragments being taken at certain distances ; the 

 order of the letters indicates their relative situation, from the 

 head to the posterior extremity; in c, d,e,f, the genital pore is 

 visible ; ff, some of the terminal rings shrivelled up, after the 

 deposition of the ova. 



