354 



KEMATHELMINTHES. 



lines arc present. The female generative opening well forward. The posterior 

 end of the body of the male has two terminal cones between which the cloaca is 



FIG. 286. Trichina spiralis. a, Mature female Trichina from the alimentary canal ; G, 

 genital opening; E, embryos; Ov, ovary, b, Male; T, testis. <?, Embryo, d, Embryo 

 which has migrated into a muscle fibre, already considerably enlarged, e, The same, 

 developed into a coiled Muscle Trichina, and encysted. 



