51 



times. Sine e th<i bogy cf the c^rciria i* ^bc ut .5 ram* in 

 length and the body of the '-adult is about 9 rnm. or ei&nteen 

 tineas larger then it IB evident Unit the f?r<r>te"t regicn 

 of growth of the -\dult body is &i<fr of the ventral sutler. 



The bladder of the excretory r-v^tem of the adult is 

 int'-* rating in th*\t thysusoulAr sac (Ib in the cercaria) 

 me in length wore than one -fourth the total length 



of the 'vrrta, ^rhersas in the cercaria It Is less than one-tenth 

 th* 1 .y. The muoul?xr tubet (lo in the 



oerojria) are also elongated raeasurini? nearly three- 



fi: J'ie total length of the body of the *Aiult wherean 



in tl;e n'r^ ri-. they mr?aBur but one t);ird tlie body length. 

 Th" ^icns in the tube* of the ceroaria's bladder 



(Id in 1 rc^rit) are not tc br. found in the adult -mci 



thus t- ? tube? nsre narrow only about as grerit in diameter 

 cercar;r. The n.F<jendin^ tube* of the blndder 



(1 in i.h<; c^rrj^ria) are Ion-? in the ^.dult a^ in the 

 ee.i*7-.i i.\i: extending? nearly tJ'ie "whole length of the bed:/. 

 PnTer.Tkl other eolleitln, tubules and ?aoce3Pory oolleoting 

 tubules ^'ire altjo seen (fig. 49). Wie musoular ear*. 

 division of the bladder #-* found to branch to either aide a 

 number r-.* ti?aea, these b ranch e in turn ^raCking up intc^ 

 smaller ^lld growl l'?r tubules th-t extend almost all over the 

 body. .Fl3.>xift oells ere never seen but the cilia in the caain 

 collecting tubule y^re very evident , being arranged in 

 bunches and thuo appearing mua l i liVe large flame eel IB. 

 So far as tho excretory system in the adult omn be 

 traced it if? much li>-e t)mt of the oeroari**, except as 

 each part hrvs been modified in length and size to raeot ita 



