PHYLUM PLATYHELMINTHES 



247 



iindcoccus (Fig. 193) is exceptional in possessing only three or 

 four proglottides. In a few (Ligula and iLs allies Fig. 194), 



r- 



FIG. 194. Ligula. (After Leuckhart.) 



though the body has the normal elongated ribbon-like form, the 

 segments are not distinct, and in Caryophyllcem (Fig. 195), 



FIG. 195. Caryophyllseus. 



(After Leuckhart.) 



FIG. 190. Amphiptyches. 



(After Spencer.) 



Fia. 197. 

 Archigetes. 



(After Leuckhart.) 



Amphilina, Amphiptyches (Fig. 196), and Archigetes (Fig. 197), 

 (Monozoa). segmentation is entirely absent, the whole body in 



