POLYCHAETE WORMS, PART 1 



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anteriorly as earlike lobes, fused on their basal third. Single upper 

 simple seta in each parapodial lobe, arched, tapering to a slender tip 

 (seta may be shorter, curved or straight and blunt, as if broken 

 off or worn down). Body colorless or yellow brown, dorsal cirri 

 yellow, eggs greenish yellow; tentacular segment may be slightly 

 raised and pigmented with golden dots. 



Biology. — Found at low water in sand. Dredged on bottoms of 

 sandy mud and gravel. According to Webster and Benedict (1887), 

 it throws itself into a coil when disturbed. Sexual epitokes were 

 found in surface water in July (Vineyard Sound, Massachusetts, July 

 26, 1883). 



Material examined. — Massachusetts (Cape Cod Bay near 

 Manomet Buoy, 14 fathoms; Vineyard Sound, surface, July 26, 1883). 



Figure 36. — Syllidae, a, Syllides setosa, dorsal view anterior end. h, Syllides longocirrata, 



dorsal view anterior end. 



