242 ZOOLOGY SECT - 



which shares in the prevailing bilateral «^^^y£j 

 The central part of this system consists of a rag ner e^ 

 which surrounds the oesophagus and V^t^Zzll 2 on n he 

 ings, or ganglia, containing nerve-cells, and y^^fj* r ™ 

 middle line below. From this are given off a number o nerves 

 S which the chief are a pair of lateral cords running back to the 



Fig 188.-rasciolahepatica. . Internal orgu ^isatio • *»%£££ t / ie vent ral aspect «. 

 of the body, showing the ™ no «»%^™°{Z*Z anterior portion of the intestine (the 

 eiaculatory duct ; /. female »P roduct "«V d STnvldJot* ow ovary (germariutn) ; p. cirrus; ph. 

 !£* < D ,„>f shownV. orf. commencement of oviduct , ov. ova j V s f d o right vas 



There are no 



posterior end and giving off numerous branches. 



The 8 reSuctivr organs (Fig. 188) are constructed on the 



tlTv^renlia, and «m„/ The M (*•) are two greatly 



