Fig. 31. — Optical, sagittal section showing internal anatomy; cx. p., excretory pore; ex. r., excretory 
vesicle; g. pap., genital papilla; L. c., Laurer’s canal; ov. d.. oviduct; v. p., ventral papillse. Re- 
mainder of lettering as in figure 30. Semidiagrammatic. Enlarged. Original. 
