CESTODA 



60 1 



CESTODES IN MAN. 

 The cestodes which are found in man may be classified as follows :- 



Order and 

 Family. 



Subfamily. 



03 



Dibothrio- 

 cephalinge 



Ligulinas , . 

 Dipylidiinae 



Genus and Subgenus. 



Dibothriocephalus 



Diplogonoporus 



Sparganum 



Braunia 

 Dipylidium 



Hymeno- 

 lepis 



r llymenolepi' 

 - Drcpanido- 

 [ taenia (?) 



Davaineinae Davainea 



Taeniinae 



Tsenia 



Tsenia 



Tseniarhynchus 



Echinococcus 



Species. 



( I. D. latus. 

 - 2. D. cordatus. 



3. D. parvus. 

 / 4. D. grandis. 



5. D. brauni. 

 C 6. S mansoni. 



7. S prolifer. 

 [ 8. S. baxteri. 



9. B. jassyeiisis. 

 10. D. caninum. 

 ( II. H. nana. 



H. diminuta. 

 H. lanceolata (?). 

 D. raadagascarien- 



sis. 

 D. asiatica. 

 T. solium. 



17. T. saginata. 



18. T. africana. 



19. T. hominis. 



20. T. philippina. 



21. T. confusa. 



v. 22. T. bremneri. 

 f 23. E. granulosus. 

 V 24. E. multilocularis. 



\ 12. 



Us. 



16. 



Two tapeworms are not included in this list — -TcBnia {Tcsnia) tenicsformis 

 Bloch, 1750, a tapeworm found in cats, and T. [TcBnia) pisiformis Bloch, 1780, 

 a tapeworm found in rabbits— because no definite evidence exists that man 

 has ever been infected by them. 



At the time of writing, man alone is known to be the host of the 

 adults of the following worms : — -Tcenia solium, T. saginata (there is 

 probably no doubt about this), T. africana, T. hominis, T. philippina, 

 T. confusa, T. hremneri, Dibothriocephalus parvus, Hymenolepis 

 nana (?), Davainea madagascariensis, D. asiatica. Other hosts may 

 yet be found. 



The following are only occasional parasites in man: — -Dibothrio- 

 cephalus latus (true host may perhaps be the dog ?), D. cordatus 

 (true host, the seal and walrus), Hymenolepis diminuta (true host, 

 the rat and mouse), Drepanidotcenia lanceolata (true host, ducks and 

 geese). 



Therefore in man there is the question of intestinal t?eniiases to 

 be considered. But cysts may also develop in man from T. solium 

 and Echinococcus granulosus and multilocularis. From the species 

 of Sparganum larval forms give rise to somatic t^niiases. These 

 affections, with their treatment, will be considered later, as will the 

 treatment. 



It must be noted that the cysticercus of T. saginata is not included, 

 as it is very doubtful whether it has ever been found in man. 



Cysticercus acanthotrias Weinland, 1858, is the same as C ^-^.llulosce 

 — i.e., the larva of T. solium. 



