92 



projection (the cephalic cone), at the tip of which is th& 

 mouth, within the small anterior sucker. On the mid- 

 ventral surface, near the " shoulder," there is a large and 

 blind sucker ; and between the two suckers there is a 

 small opening, the genital outlet, through which the penis 

 may be protruded. The cuticle has transverse rows oi 

 minute spines. 



Shell gland 

 Vas deferens 



Vasdeferens 



Testis 



Laurer's canal- 



Vitellarian duct 



Fia. 21. The Liver- Fluke (Fasciola hepatica). After SOMMEB. 

 Showing the Reproductive Organs. 



Describe the Alimentary System of the Liver-fluke. 



The mouth leads into a short muscular pharynx which 

 opens into the blind intestine. The intestine immediately 

 bifurcates into two long tubes which are near together. 



