1920.] R. B. Seymour Sewell : Mesocoelium sociale. 



85 



iritd. 



eibl. 



_exf>. 



Fig. I. — Dorsal view of Mesocoelium sociale {l^nhQ) slightly compressed. 



c«V., cirrus sac ; e-vZ)/.. excretory bladder ; exp., excretory pore; i., intestinal 

 coecum ; m., mouth; oes., oesophagus; ov., ovary; pli.. pharynx; pph., pre- 

 pharynx ; ;',, testis; it., uterus; vit., vitelline gland; vifd., vitelline duct; vs., 

 ventral sucker. 



