POLYCHAETE WORMS, PART 1 29 



in the oceanographic fouling studies in the New Enghmd region. 

 Found among oysters (South CaroHna). Found living commensally 

 in the mud tubes of the terebellid Amphitrite johnstoni Malmgren 

 (includes A. brunnea and A. Jigulus) in both the western Atlantic 

 (Mount Desert region, Gulf of Maine, Procter, 1933; Eastport, 

 Maine, Webster and Benedict, 1887; St. Andrews, New Brunswick, 

 under rocks, Pettibone, 1955; Machias Bay and Boothbay Harbor 

 region, Maine, sandy mud and gravelly sand flats, Pettibone, 1955; 

 Fort Stark, Newcastle, New Hampshire, G. M. Moore, collected in 

 1956) and eastern Atlantic (British shores, Mcintosh, 1900). Found 

 sharing the tubes of Chaetopterus variopedatus (Renier) (Ireland, 

 Southern, 1914; Isle of Man, Southward, 1956). Found also in 

 lugworm burrows (British shores, Newell, 1954). 



Material examined.— Off Labrador, Gulf of St. Lawrence (St. 

 Lawrence estuary, Gaspe Bay, Bay of Chaleurs), Nova Scotia, 

 New Brunswick, Maine, New Hampshire, Massachusetts (Cape 

 Cod and Vineyard Sound), South Carolina, in low water to 129 

 fathoms. 



Distribution. — Arctic, Iceland, Norway to France, Hudson Bay 

 to South Carolina, Bering Sea to Washington, north Japan Sea. 

 In low water to 630 fathoms. 



Gattyana amondseni (Malmgren, 1867) 



Figure 5,e-g 



Nychia a?nondseni Verrill, 1881, pp. 303, 306. — Webster and Benedict, 1884, 



p. 700.— Whiteaves, 1901, p. 86. 

 Gattyana amondseni Treadwell, 1948, p. 20, fig. 7c. — Grainger, 1954, p. 509. — 



Uschakov, 1955, p. 143, fig. 31.— Pettibone, 1956a, p. 552.— Eliason, 1962, p. 216. 



Description. — Length up to 30 mm., width including setae up to 

 12 mm., segments 35, 36. Elytral microtubercles conical and bifid; 

 elytra! fringe confined mostly to external borders. 



Biology. — Dredged on bottoms of mud, silty clay, and mud with 

 rocks, sand, pebbles, gravel, red algae. 



Material examined. — Off Labrador, Gulf of St. Lawrence (Gaspe 

 Bay, South Anticosti Island, Bay of Chaleurs), Nova Scotia, Maine, 

 Massachusetts, Rhode Island, in low water to 120 fathoms. 



Distribution. — Arctic, Alaska, Norway, Hudson Bay to Rhode 

 Island. In low water to 378 fathoms. 



Gattyana nutti Pettibone, 1955 



Figure 5a 

 Gattyana nutti Pettibone, 1955, p. 119, fig. 2,a-f. 



Description. — Length up to 17 mm., width including setae up 

 to 5 mm., segments 35, 36. Elytral macrotubercles conical; micro- 



