518 
M. V. LEBOUR 
HIG: 
AA of WONHe 
CERCARIA NEPTUNI Lebour. 
EXPLANATION OF FIGURES. 
Sporocyst containing cercariz from the digestive gland of Buccinum undarun 
Cercaria somewhat contracted. 
Cercaria expanded. 
Side view of cercaria. 
Head of cercaria bent forward to show stylet and glands. 
Spiny disc at posterior end of cercaria. 
Transverse section of cercaria through the ventral sucker and intestinal 
diverticula. 
