B 



FIG. 85. Trichina spiralis. A, encysted form in muscle of host; B, female; C, 

 male, bh, connective tissue envelope; cy, cyst; tie, ejaculatory duct; e, em-- 

 bryos; y, fat globules; h, testis; nt. f, muscle fibre; oe, pharynx; ov, ovary; 

 wo, gonopore; zh, cell masses in intestine. (From Langs Comparative 

 Anatomy, after Clans.) 



155 



