42 



BRANCH NEMATHELMINTHES 



e»?^.-l 



Fig. 32. — Larvae of Trichinella spiralis in mus- 

 cle, not yet encysted ; enlarged. (Leuckart .) 



Fig. 3 1 . — Trichinella 

 spiralis. Adult female, 

 showing embryos, emb., in 

 uterus; ff p., genital open- 

 ing through which the 

 embryos are discharged; 

 enlarged. (Leuckart.) 



Fig. 33. — Piece of pork showing larvae of 

 Trichinella spiralis encysted in the muscle- 

 fibers; natural size. (Ostertag.) 



Fig. 34. — Encysted larva of Trichinella spira- 

 lis; enlarged. (Leuckart.) 



