THE TAPE WORM 



187 



similar buds growing from the attached "head" end (called 

 scolex) result. The completed worm then has a superficial 

 resemblance to a segmented worm such as an annelid, but the 

 resemblance is only superficial for the segments (called pro- 



FIG. 83. Taenia solium. A, Entire tape worm with proglottids; B, scolex with 

 sucking discs and crown of hooks. (From Leuckart.) 



glottids) are not typical metameres or somites and have no 

 organic relation to the whole worm. Each segment has a com- 

 plete set of reproductive organs which are quite as complex as 

 the reproductive organs of annelids or other animals of similar 

 grade (see Fig. 84). When mature the proglottids are de- 



