THE REPKODUCTIVK SYSTEM 



29 



e. The vesicnla seminalis is an elongated sac lying 

 above, and somewhat in front of, the ventral 

 sucker. 



d. The ductus ejaculatorius is a fine tube running 

 from the vesicula seminalis to the end of the 



F 



Fia. 7. — Fasciola hepatica. Beproductive organs. (After Sommer.) 



CS, cirrus-sac. D, ductus ejaculatorius. F. female sexual aperture. O, 

 ovary. OD, ovarian duct. P, penis. . S. shell-gland. T, anterior testis. 

 XJ, uterus. TTA, vas deferens from anterior testis. VP, vas deferens from 

 posterior testis. VS, v6sicula seminalis. Y, yolk-gland. YD, duct of yolk- 

 gland. 



