SEA-FISHERIES LABORATORY. 287 



bodies, placed well back near the posterior extremity. 

 Neither the ducts of these bodies nor those of the vitellaria 

 were seen. The cirrus is long, and apparently unarmed. 

 The cirrus pouch and seminal vesicle appear to lie 

 entirely in front of the ventral sucker, but it was difficult 

 to be sure of this. A characteristic feature of the 



Fig. 17. Distomum, sp. x 70 dia. 



anatomy of this distomid is the small number of ova. In 

 the three specimens, 12, 13 and about 24 were the 

 numbers of eggs counted. These are comparatively large, 

 are thin shelled and possess no appendages. 



In the characters of the vitellaria, the position of 

 the testes and cirrhus and the large size and limited 



