144 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 117 



mens in Bering Sea extend its northward distribution in the Western 

 Hemisphere. 



Family Cirratulidae 



Chaetozone setosa Malmgren 



Chaetozone setosa Malmgren, 1867, p. 96, pi. 14, fig. 84. — Pettibone, 1954, pp. 

 287-288, fig. 33d.— Hartman, 1961, p. 109. 



Material: Stations G-5(3); Chukchi Sea. 



Cirratuliis cirratus (Miiller) 



Lumbricus cin-atus Miiller, 1776, p. 214. 



Cirratulus cirratus. — Pettibone, 1954, pp. 286-287, figs. 33a-c. — Hartman, 

 1961, p. 105. 



Material: Stations 54(4); Little Diomede Island. 



Cossiira longocirrata Webster and Benedict 



Cossiira longocirrata Webster and Benedict, 1887, p. 743. — Uschakov, 1955, p. 

 305, pi. 112, fig. Zh.— Berkeley and Berkeley, 1956, pp. 544-545. 



Material: Stations 5(69), 33(1), 42B(8), 43(1), 52(12), 55(8), 

 56(23), 59(10), 60(3), G-l(2);Bermg and Beaufort Seas; silty or 

 very fine sands. 



Distribution: This species was reported originally from Maine; 

 subsequently it has been found in North Atlantic, Russian Pacific, 

 and the state of Washington. These reports from the Bermg and 

 Chukchi Seas represent new localities for this species. 



Tharyx multifilis? Moore 



Tharyx muUifiUs Moore, 1909, pp. 207-268, pi. 9, fig. 43. — Berkeley and Berkeley, 

 1952, pp. 34-35, fig. 62. 



Material: Stations 5(38), 8(1), 26(2), 28(1), 29(1), 32(1), 33(5), 

 35(5), 43(6), 45(3), 46(11), 47(14), 49(21), 50(11), 52(6), 55(2), 56(1), 

 57(2), 58(3), 59(7), 60(2), G-3(3), G-4(2), G-5(2), 11-1(3), R-3(l). 



Ecology: This polychaete was found chiefly from the stations with 

 silts; a few specimens were taken from either fine or very fine sandy 

 bottoms. 



Remarks: Morphologically and ecologically these specimens re- 

 semble T. multifilis with the exception of the small size (10-15 mm.) 

 of the present material. These specimens lack the dark-colored 

 cardiac body as characterized by the smaller and related species 

 T. parvus Berkeley. Because of the size difference and because of 

 the few distinguishing characters in this genus, I am referring this 

 material questionably to T. multifilis. 



Distribution: Vancouver Island to southern California. 



