26 



TROPICAL MEDICINE AND HYGIENE 



2-4 to 3-8 mm. The ovary is tabulated, and the testicles 

 are much branched. It inhabits the gall-bladder and 

 bile-ducts of man. It is a common parasite in the 

 Chinese, and may be found in about i per cent, of 

 autopsies, enormous numbers being often present. 



Ph. 



- Vsc. 



FlG. 12. Met orchis truncatus, 

 Rud., from the biliary ducts of the 

 domestic cat. 25/1. Vs., ventral 

 sucker; /., intestinal fork; Vsc., 

 vitelline sacs ; T., testes ; O., 

 ovary; Rs.> receptaculum semi- 

 nis ; #., uterus. 



T. ' 



FlG. II. Opisthorchis conjunction , 

 Cobb (nee Lewis and Cunn, nee 

 McConnell), from Cants fulmis. Vs., 

 ventral sucker, ; /., intestine ; Vsc., 

 vitelline sacs ; Ex., excretory bladder ; 

 T., testes; 0., ovary; Ms., oral 

 sucker; Ph., pharynx; Ut. , uterus. 

 (After Cobbold.) In O. felineus, 

 found in the cat with which this was 

 at one time confused, the testes are 

 lobular. 



As an indigenous parasite its geographical distribution is 

 limited to the Far East. The Chinese in any part of the 

 world may be found to harbour the parasite, but it does 

 not appear to spread when introduced into other 

 countries. The intermediate host has been shown to 

 be a fish by Kobayashi. The fish he proved to be 



