22 TROPICAL MEDICINE AND HYGIENE 



were in people from India. It is a common parasite of 

 pigs and is commoner in man than the recorded cases 

 indicate. This fluke has been found in Assam more 

 frequently than in other parts of India. It lives in the 

 intestine, and up to thirty specimens have been found in 

 one individual. 



In some of the cases there has been marked anaemia, 

 but as the patients also had ankylostomes it cannot be 

 proved to have caused this anaemia. Persons harbouring 

 this parasite often have dysenteric symptoms. The 

 worms are expelled after the administration of thymol. 



A third species, F. fulleborni, has been described. 

 In this also the testicles are behind each other as in 

 F. buski (fig. 8). 



There is a good deal of variation in the different 

 specimens described as F. buski, and whether the varia- 

 tions are sufficient to amount to specific differences, and 

 whether F. fulleborni is a separate species, or merely 

 represents one of these variations, is not yet certain. 

 More specimens are required. 



PARAGONIMUS. 



Paragonimns. The ovary and testes are branched, the 

 former slightly. The testes are posterior and side by 

 side at nearly the same level. The intestine is sinuous 

 but not branched. The ventral sucker is slightly anterior 

 to the middle line and about the same size as the oral 

 sucker. The opening of the genital organs is posterior 

 and to one side of this sucker. Yolk-glands are very 

 numerous and extend anteriorly almost to the oesophagus 



(fig- 9)- 



Paragonimus westermani is found in tiger cats in the 



East, and in man in China, the Philippines, and Japan. 



It is a thick, fleshy fluke, 8 to 10 mm. in length and 

 4 to 6 mm. in breadth. It is usually found in the lungs, 

 and the eggs are discharged with the sputum. In persons 

 infected with this parasite attacks of haemoptysis are 

 frequent and may be profuse. There is a considerable 



