TREMA TOD A. 



'75 



the testes. The ova pass from its tubes into an ovarian duct. 

 Nutritive cells are gathered from very diffuse yolk glands, collected 



. -S.7-V 



m 



-.- \ \/ r^ ' -f *. 



mtm, 



~ - * ' * ... ,_. 7 



> 



. '. 



V.-IX""-'. / 



^5 



"V ~" ~v"-k"^<<--':_2J x ! 

 > oJtK^^p"! 



FiG. 85. Reproductive organs of liver fluke. 

 After Somnier. 



_/. Female aperture. 

 s.v. Seminal vesicle. 

 ygl. Diffuse yolk glands. 

 sh.g. Shell gland. 

 i'.d. Vas deferens. 

 T. Testes (anterior). 



or. Ovary (dark). 



lit. Uterus. 

 c.5-. Cirrus sac. 



p. Penis. 

 m. Mouth. 



. Anterior lobes of gut. 



in a reservoir, and pass by a duct into the end of the aforesaid 

 ovarian duct. At the junction of the yolk duct and the ovarian duct 

 there is a shell gland, which secretes the "horny" shells of the eggs, 



