4mm 



0.5cm 



L 



1.0cm 



Figure 1.— Typical scolex from Fistulicola plicatus, as described and figured by Yamaguti (1959). 

 Figure 2.— Pseudoscolex (1st type). 

 Figure 3.— Pseudoscolex (2d type). 

 Figure 4.— Pseudoscolex (3d type). 



755 



