60. 



had some rediae that contained cysts, the number so parasitized 

 was also probably much greater than recorded. The outstanding 

 feature of the above table is that such a large percentage 

 Occident alia contained gome stage of the parasite. 

 the next most important feature is that more snails 

 were found to be infected with cysts than with rediae. This, 

 as previously stated, is due to this snail being both the 

 intermediate and secondary intermediate host* 



, 



to 





, 



