PLATE VIII. 



Fig 1. T. SERRATA. 



f. Ripe segment X 6. 



Fig. 2.— TiENIA SOLIUM. 

 Hooks. 



Fig. 7. 



Unripe seg^ments. 



Fig. 5. 

 1T..ENIA GRASSICOLLIS 

 Segment x * 



Head (mag.) 



Si-X'hooked Embryo casting its 

 ciliated coat. 



Segments of B fells. 



