TREMATODA. 



1.85 



vesicle lie in a space or "cirrus sac" between the ventral sucker and 

 the external male genital aperture. The ovary is also branched, but 



P M 



FIG. 96. Reproductive organs of liver fluke. 

 After Sommer. 



f. Female aperture. 

 s.v. Seminal vesicle. 

 y.gl. Diffuse yolk glands. 

 sh.g. Shell gland. 

 v.d. Vas deferens. 

 T. Testes (anterior). 



ov. Ovary (dark). 



ut. Uterus. """*"* 

 c.s. Cirrus sac. 



/. Penis. 

 in. Moutll. 



g: Anterior lobes of gut. 



less so than the testes. The ova pass from its tubes into an ovarian 

 duct. Nutritive cells are gathered from very diffuse yolk glands, 

 collected in a reservoir, and pass by a duct into the end of the afore- 



