192 



zooior/r 



'r-' 



Fig. ISO. — Trichina. A, encysted form in muscle of pork; B, female; C, 

 male; hh, envelope of cyst; cy, cyst; de, male duct; e, embryos; /, fat 

 globules ; //., testis ; mf, muscle fibre ; or, pharynx ; ov, ovary ; no, opening 

 to egg duct ; zh, cell masses in intestines. After Claua. 



