Two atylrct oeroariae excretory systems, unpublished, th t I 



e worked out also shew a definite arr:mgeKient of the 

 tubules and grouping of the capillaries* 



Whan many mere excretory system share been worked out 

 I believe that * sound cluseifi o <tion of the families, genera,ar 

 sp^nie? can fee formulated if only this system in Vnown, 

 However, I am not suggesting th^t a classification should be 

 build upon this system only. 



l&icysted Agr*fficdi<storae or Cyst 



The oeroaria^ of ?^hiao 8 torn a revc^ lutyaa form encysted 

 aganco internes nr ^yats which are most oommonly found in 

 ^iysa pcciaentalig They v%ry in diameter from 0*147 to 

 0,181 ima. but the (jr- a *t majority are around 0*166 rum* 

 . flc-'^pt lor the nuaeroue opaque ooo^retions in the tubular 

 divisions of th bladder, the a&aBiodlstojMi ^s well as the 

 cyst wall are nearly colorless, Theae agacaodistcnies may 

 be found encysted in any part cf the body of the snail f 

 from the foot to th# extreme end of the vieoera, with 

 apparently no pr^feranoe as to their looa&ion* X*o hundred 

 and eigiity-t^o snails out of the four hundred exramined or 

 70* & per cent 'were infected with this stage* Out of the two 

 hundred and eighty -two o infested, ninty-five or nearly 

 34 per oent harbored only the oyt. In this respect this 

 species is different from the majority of di(?;enetie trenntodes 

 in th'At the secondary intermediate host is the soaie as the 

 intermediate host* However, Lebcur (1912, p 442) states 

 th-rt, "in exaeptional oases Uve { e chinos tome ) otroariae may 

 enoy?t in its first hosi". Cort (1910 t p* 37) finds both 



