THE DIPLOGONOPOROSES—DIPYLIDIASIS 1757 



and at times fever associated with serious symptoms, but this 

 infection is not common in the tropics. The treatment is the 

 same as for Tseniiasis. 



The Diplogonoporoses. 



Diplogonoporosis is found in Japan, where it is due to Diplo- 

 gonoporvis grandis (p. 605), and in Roumania, where it is caused 

 by D, brauni (p. 605). The recorded 

 symptoms somewhat resemblethose 

 produced by Dibothriocephalus latus. 



Hymenolepsiasis. 



Hymenolepsis nana (p. 610) may 

 give rise to severe reflex nervous 

 symptoms, but only when present 











,"0 ■»«,* *,*°'^f"o% 









Fig. 751. — Dibothriocephalus laius 

 (Proglottis). 

 (After Braim.) 



Fig. 752A. — Egg of Hymenolepsis 

 nana in Human F^ces. (x 300.) 



Fig. 752. — Dipylidinm caninuni. 

 (After Diamare.) 



in considerable numbers. It has 

 been found in Egypt, Siam, Japan, 

 North and South America, and 

 Europe, and is by no means a rare 

 parasite in man. H. diminuta 

 (p. 609) is a common parasite in 

 rats, but does not occur so fre- 

 quently in man, though a number 

 of cases have been recorded in 

 America and Europe. It does not 

 cause any appreciable symptoms. 



Dipylidiasis. 



Dipylidium caninum (p. 608) 

 has often been found in man, but 

 is harmless. 



