NEMATODA. 



287 



connective tissue, partly with the aid of the currents of blood, into the striped 

 muscles of the body. They pierce the sarcolemima and penetrate into the 



FIG. 235. Trich'na spiraHs. a, mature female Trichina from the alimentary canal ; G genital 

 opening; E embryos ; GJ ovary, b, male ; T testis. c, embryo, d, embryo which has migrated 

 into a muscle fibre, already considerably enlarged, e, the same developed into a coiled Muscle 

 Trichina, and encysted. 



