24 



These ova contain the embryo, which at first is 

 oval, afterwards becoming globular, is enclosed in a 

 ciliated covering, and furnished with six hooks (PL 

 II. fig. 5, A). 



Habitat. The location of these parasites, like the 

 Taenise, is in the small intestines. 



Geography. They are more frequently found in 

 the north of Europe, viz., Russia, Sweden, Finland, 

 &c., than in other parts. 



