152 



ZOOLOGY 



B 



FIG. 141. Trichina. A, encysted form in muscle of pork; B, female; 

 (7, male ; bh, envelope of cyst ; cy, cyst ; de, male duct ; e, embryos ; /, fat 

 globules; h, testis; mf, muscle fibre; oe, pharynx; ov, ovary; no, opening 

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



