POLYCHAETE WORMS, PART 1 307 



AIaterial examined. — Gulf of St. Lawrence (Prince Edward 

 Island), Maine (Aliddle Cove, Ebenecook Harbor, Southport Island, 

 1-3 fathoms; north end Long Ledge, Sheepscofc River, 3 fathoms), 

 New Hampshire (Portsmouth Harbor, 2 fathoms), Massachusetts 

 (Georges Bank, 40-84 fathonxs, R. Wigley; Cape Cod Bay, 12-29 

 fathoms; Massachusetts Bay off Plymouth, 10-17 fathoms; Buzzards 

 Bay), deep Atlantic (Albatross Station 2192, 39°46' N., 70°14' W., 

 1,060 fathoms, 1884; Station 2217, 39°47' N., 69°34' W., 924 fathoms; 

 Station 2231, 38°29' N., 73°09' W., 965 fathoms; Station 2234, 39°09' 

 N., 72°03' W., 810 fathoms). 



Distribution.^ — Ireland, Denmark, Mediterranean, Davis Strait to 

 off Long Island Sound, Florida?, w^estern Canada (Gulf of Georgia). 

 In 1 to 1,060 fathoms. 



Aricidea {Aricid^^a) suecica Eliason, 1920 



Figure 80, f,g 



Aricidea nolani Webster and Benedict, 1887, p. 741, pi. 7, figs. 97, 98 (part). 

 Aricidea suecica Eliason, 1920, p. 52, figs. 14-15. — Wesenberg-Lund, 1950a, p. 32, 



pi. 8, fig. 35; 1950b, p. 79; 1951, p. 73; 1953, p. 60.— Southward, 1956, p. 269, 



fig. 21d.— Hartman, 1957, p. 318. 



Description. — Length up to 20 mm., width up to 1 mm., segments 

 up to 110. Prostomial antenna subulate or fusiform, usually curved 

 dorsally and posteriorly, extending to setiger 2. Branchiae usually 

 15-19 pairs (10-24), straphke, tapering gradually to pointed tips, 

 Notosetae of posterior region few, slender, capillary. Nem-osetae of 

 posterior segments of 2 kinds: (1) Some upper ones much elongated 

 (longer than body width) and (2) lower ones shorter, slightly stouter, 

 with long mucronate tips; some of the latter group may lack the 

 mucronate tip). Without color, in life and in alcohol. 



Biology. — Dredged on bottoms of mud and ooze, muddy sand, 

 silty clay, mud with gravel, rocks, sand dollars, shells, and tubes. 

 Females with large white eggs (massed in postbranchial segments) 

 found in Maine in August (Ebenecook Harbor, August 2, 1955). 



Material examined.- — Gulf of St. La^vl'ence (Gaspe Bay, Bay of 

 Chaleurs, 5-60 fathoms), Maine (Middle Cove and Love's Cove, 

 Ebenecook Harbor, Southport Island, 3-7 fathoms; north end Long 

 ]jedge, Sheepscot River, 3 fathoms), Massachusetts (Georges Bank, 

 72-190 fathoms, R. Wigley). 



Distribution. — Greenland, Jan Maycn, Iceland, Faroes, Sweden 

 to British Isles, Denmark, Davis Strait to Massachusetts, Russian 

 Arctic to southern Alaska. In 3 to 1,254 fathoms. 



