202 U.S. NATIONAL MUSEUM BULLETIN 227 



BiOLOCxY. — Dredged on bottoms of mud, sandy mud, mud with 

 fine gravel, rocks, worm tubes. 



Material examined.- — Gulf of St. Lawrence (Gaspe Bay, Bay 

 of Chaleurs, St. Lawrence estuar}', 16-4.3 fathoms), Maine (Location 

 170-1, 173, 186, Gulf of Maine, off Eastern Point Light, 90-110 

 fathoms, 1878, U.S. Fish Commission), Massachusetts (off Georges 

 Bank, 110-150 fathoms, 1872; Location 124, off Salem, 51 fathoms, 

 1877; Location 363, off Cape Cod, 108 fathoms, 1879; Location 1029, 

 off Martha's Vineyard, 458 fathoms, 1881). 



Distribution. — Widely distributed in the Arctic. Also Iceland, 

 Faroes to France, Gulf of St. Lawrence to off Delaware, north Japan 

 Sea to Japan, In 3.3 to 4,001 fathoms. 



Nephtys ciliata (O. F. Miiller, 1789) 



Figure 51c 



Nephthys ciliata Webster and Benedict, 1887, p. 709. — Whiteaves, 1901, p. 82.— 

 Fauvel, 1923, p. 371, fig. 145,a-6.— Grainger, 1954, p. 515.— Uschakov, 1955, 

 p. 217, fig. 68.— Berkeley and Berkeley, 1956a, p. 235.— Clark, 1960, p. 21. 



Nephtys ciliata Hartman, 1944a, p. 339, pi. 15, fig. 9. — Pettibone, 1954, p. 270, 

 fig. 30n; 1956a, p. 558.— Eliason, 1962, p. 249. 



Description. — Length up to 300 mm., width up to 13 mm., seg- 

 ments up to 140. Tentacular segment with dorsal and ventral ten- 

 tacular cirri subequal to antennae. Parapodia (fig. 51c) with acicu- 

 lar lobes bilobed in anterior and middle regions, rounded or slightly 

 bilobed in posterior region. Anterior lamellae rudimentary; posterior 

 lamellae rounded, short, about same length or only slightly sur- 

 passing the aciciilar lobes. Tips of acicula covered with dark chiti- 

 nous plates. Preacicular setae short, fine, barred; postacicular 

 setae long, flowing. Ventral cirri conical; dorsal cirri digitiform. 

 Branchiae cirriform, siclde shaped, begin on setigers 4-8, rudimentary 

 on last 20-30 segments. 



Biology. — Found at low water in mud, muddy sand, gravelly mud, 

 or sand. Dredged on bottoms of mud, sand, and combinations of 

 mud, muddy sand, pebbles, gravel, stones, rocks, shells. Found in 

 stomach of the Atlantic cod Gadiis callarias (Grainger, 1954) and 

 haddock (Georges Bank, 1953, R. Wigley). 



Material examined. — Gulf of St. Lawrence (Gaspe Bay, Bay of 

 Chaleurs, St. Lawrence estuary, low water to 60 fathoms). New 

 Brunswick (St. Andrews), Maine (Red Beach, St. Croix River; Star- 

 board Creek, Machias Bay; Boothbay Harbor region, Ebenecook 

 Harbor, Southport Island, 2 fathoms; Hendricks Head Beach, South- 

 port Island; Riggs Cove, Robinhood, Georgetown Island; Isle of 

 Springs; Barter Island; oft' Merrill Ledge, Sheepscot River; North 

 Edgecomb; Cross River off Sheepscot), New Hampshire (Newcastle, 



