272 



s. GOTO 



Explanation of Plates. 



Abbreviations common to all the figures. 



ant. suclc. 



hi- 



biil. ej. ... 

 cat), ije. int. 

 chit. 



cir. 7)1 xs. 

 iVkkj. mus, 

 line. ej. ... 



d. v. 771US. 



e.V. op. 



e.r. c. ni 



e.r. sac. . 

 e.V. ves. . 

 (I en. oj). . 

 int. 

 int. c. 

 int. c. 771. 

 I. 7nus. . 

 mes. c. . 

 mes. 71. . 



7)lllS. 



7ie)T. 

 7ierr. c. . 

 oesoph. . 

 out. 

 or 



OVil. 



jit')i. 

 2>en' . 



. anterior sucker. 



. brain. 



. bulbus ejaculatorius. 



. canalis genito-intestinalis. 



. cliitinous piece or framework of the sucker. 



. circular muscle. 



. diagonal muscle. 



. ductus ejaculatorius. 



. dorso-ventral muscle. 



. excretory opening. 



. external circular muscle. 



. terminal excretory sac. 



. excretory vessel. 



. genital opening. 



. intestine. 



. intestinal cell. 



. internal circular muscle. 



. longitudinal muscle. 



. mesenchyma cell. 



. mesenchyma nucleus. 



. muscle. 



. nerve. 



. nerve-cell. 



. oesophagus. 



. ootyp. 



. ovary. 



. oviduct. 



. penis. 



. cliitinous penis. 



