26o 



DISEASES DUE TO HELMINTHS 



THE FOLLOWING LIST OF TAPEWORMS FOUND IN MAN 



will be useful for reference. 



Table of Tapeworms found in Man. (After Daniels). 

 Platyhelminths 



Turbellaiia 



Tremaloda 



I 

 Cestoda 



Pseud ophyllidise 

 Dibothriocephaloidea 



Cyclophyllidiae 



Dipylidium Hymenolepis Davainea 



D. caninum H. nana D. mada- 



Dibothrio- Diplo- Sparga- H. diminuta gascariensis 



cephalus gonoporus num (?) 



I I.I. 



D. latus D. grandis S. mansoni 



Tcenia 



T. solium 

 T. saginata 

 T. africana 

 T. confusa 

 T. echino- 

 cocius 



Only the important species found in man will be dealt with. 



DIBOTHRIOCEPHALUS LATUS. 



This is the only important helminth of the first Order. 

 It occurs in man, dogs, cats and foxes. 

 It is nine metres long and has 3,000 to 4,000 segments. 

 It has two deep laterally placed suckers. 



The proglottides are very broad, 10 to 20 mm., and are broader 

 than long. 



""iri 







Various chain of segments 

 of Dibothriocephalus latns, show- 

 ing the central uterine rosette. 

 (Natural size.) 



»«■ .* »T & • • o «•. 



^ 



-^n<? '^5-' 



Transverse section of the 

 head of Dibothriocephalus 

 la 'us. 30/ 1 . 



Fairly mature proglottis of Dibothriocephalus latus. 

 The viteliaria are at the sides; the uterus, filled with 

 eggs, is in the middle, aUo ihe vagina (ihe daik siripe 

 passing almost straight from the front to the back), and the 

 vas deferens (almost hidden by the uterus). Above in the 

 centre is the cirrus sac, and below the shell gland and ovary 

 are seen. 15/1. (From a stained preparation.) 



I 



