VERMES 131 



Polycirrus eximius Leidy 



Fig. 21 



A small red worm, usually less than one inch, 

 with long crowded tentacles extending in every di- 

 rection. Lives in sand near low water mark. New 

 England and southward. 



Fig. 21 

 Polycirrus eximius Leidy 



Chaetopterus pergamentaceus Cuvier 



A short stout worm with the anterior (head) 

 region much flattened; the middle region is composed 

 of one segment bearing large -wing-like parapodia 

 and four swollen segments; highly luminous. The 

 worm lives in a U-shaped parchment-like tube up 

 to two feet in length, which is buried in the sand 

 or mud. Known from Cape Cod to North Carolina. 



