292 



( iKNKRAL I >I()L()C,V 



The common liver-fluke Fasciola hepatica, though rare in this coun- 

 try, is common in Syria where men eat raw goat-livers. The disease is 

 called Halzoun. 



Opisthorchis (Distoma) felineus is common in cats. It has been 

 found in Prussia, Siberia, and Nebraska. 



Opisthorchis noverca (Distomum conjunctum) is the Indian liver- 

 fluke. 



D 



in. 



Fig. 182. Infective Trematodes. 



I. Opisthorchis felineus. Os., oral sucker; Ph., pharynx; /., 

 intestine ; Vs., ventral sucker ; Ut., uterus ; Vg., vitelline glands ; 

 Vd., vitelline duct ; O., ovary ; T., testes ; EC., excretory canal. 



II. Opisthorchis noverca. A., greatly enlarged. B., almost na- 

 tural size, m., mouth (oral sucker) ; ph., pharynx; ac., acetabulum 

 (ventral sucker) ; ut., uterus; vt., vitelline glands; ov., ovary; vd., 

 vas deferens ; t., testes ; i., intestine ; cxp., excretory pore. 



III. Fasciolopsis buski. 



IV. Heterophyes heterophyes. a., schematic and highly en- 

 larged ; b., about twice natural size ; e., eggs, greatly magnified ; 

 d., spine greatly magnified. (I, after Stiles and Hassal ; II, after 

 Manson ; III, after Rivas ; IV, after Loose. ) 



V. Paragonimus Westermani (Asiatic Lung Fluke) : 1, oral 

 sucker ; 4, intestine ; 7, acetabulum ; 8, ovary ; 9, excretory canal ; 

 11, yolkglands ; 12, testis ; 14, uterus. (After Pratt.) 



