POLYCHAETE WORMS, PART 1 



193 



Remarks.—^, circinata has been referred to A. macroura Schmarda 

 from the Antarctic and South Atlantic by Hartman, 1942c, 1950; 

 table 5 below shows how they differ. 



Table 5. — Differences between A. macroura and A. circinata 



Biology. — Dredged on bottoms of mud, sand, with gravel, rocks, 

 shells. Fomid in the stomach of haddock (Georges Bank, 1940, 1953, 

 1955, R. Wigley). 



Material examined. — Type specimen from off Georges Bank 

 and numerous specimens from Gulf of St. La-wi-ence, off Nova Scotia, 

 Maine, Massachusetts, Rhode Island, Long Island Sound, in 8 to 

 430 fathoms. 



Distribution. — Gulf of St. Lawrence to off Long Island Sound. 

 In 8 to 430 fathoms. 



Genus Neplitys Cuvier, 1817 



Nephthys Savigny, 1820, p. 34. 



Type (herein designated): Nephtys ciliata (O. F. Miiller, 1789). 



The species of Nephtys represented have the prostomium with the 

 four antennae subequal or the posterior pair may be slightly larger, 

 without conspicous eyes (may be deep-set, inconspicuous) ; proboscis 

 with 22 longitudinal rows of subterminal papillae, 2 to 8 per row, 

 with a larger middorsal papilla in A^. ciliata, N. longosetosa, N. picta, 

 N. bucera, and A^. incisa (fig. 496), 



