52 



SUMMARY OF CURRENT RESEARCHES RELATING TO 



exp 



Cercaria of Schistosoma japonicimi, ventral view; as, anterior spines; 

 b, excretory bladder ; h, excretory bladder of tail ; eg, cepbalic 

 glands ; cm, circular muscles ; dcg, ducts of cephalic glands ; ds, diges- 

 tive system ; exp, excretory pore ; /, flame cell ; hg, head gland : ?,, island 

 in excretory .bladder ; It, lobe of the tail ; m, mouth ; n, nervous system ; 

 st, stem of "tail; s, ventral sucker. 



