The Phylum AnneUda 



Fig. 14.1. The clamworm, .yerets 

 virens, in locomotion. The para- 

 podia beat in coordinated strokes; 

 note also that in each short region 

 the positions of the parapodia are 

 related to the way in which the 

 body is bent. (Photograph by 

 Bassett Maguire, Jr.) 



