70 U.S. NATIONAL MUSEUM BULLETIN 227 



2. Dorsal pair tentacular cirri twice as long as ventral pair, extending to segment 



4 (fig. 16(7). Anal cirri short, thick, elongate-oval E. trilineata 



Two pairs tentacular cirri subequal or veiitral pair slightly longer than dorsal 

 pair 3 



3. Middle and posterior dorsal cirri very asymmetrical, the outer side much 



longer than the inner side (fig. 16d). Anal cirri subulate, tapering. 



E. heteropoda 



Dorsal cirri symmetrical or only slightly asymmetrical. Anal cirri short, 



thick, almost spherical 4 



4. Middle dorsal cirri longer than or as long as wide, nearly symmetrical, thick, 



flattened, bluntly conical, not much larger than parapodial lobe (fig. 16e). 



E. longa 



Middle dorsal cirri wider than long, somewhat asymmetrical, much larger 



than parapodial lobe (fig. 16/) E. flava 



Eteone lactea Claparede, 1868 



Figure 16,a-c 



Eteone setosa Verrill and Smith, 1874, p. 294. 



Eteone pusilla Verrill, 1881, pp. 304, 308.— Treadwell, 1948, p. 24, fig. 116.— 



Miner, 1950, p. 316, pi. 102.— Not Oersted, 1843. 

 Eteone alba Webster and Benedict, 1884, p. 705^ Webster, 1886, p. 134, pi. 5, 



figs. 13-16.— Hartman, 1945, p. 14, pi. 2, figs. 5-6; 1951, p. 33; 1959a, 



p. 145.— Pratt, 1951, p. 329. 

 Eteone lactea Fauvel, 1923, p. 175, fig. 63, a-d.— Clark, 1960, p. 17. 



Description. — Length up to 230 mm., width up to 3 mm., seg- 

 ments up to 400. First few pairs dorsal cirri small, gradually get 

 larger. Middle and posterior dorsal cirri much wider than long, 

 asymmetrical, the outer side being longer than the inner side. Color 

 in life: milky white, with or without flaky white specks, or pale yel- 

 low; color, preserved: white or tannish, sometimes with scattered light 

 brownish spots which may be concentrated in three spots per segment 

 or a short transverse band. 



Biology. — Found intertidally near high water line, burrowing in 

 firm mud, to low water in sandy shoals, sandy mud, and soft mud. 

 Dredged in 2 to 100 fathoms on bottoms of sand, gravel, with bro- 

 ken shells, in mussel beds, among ascidians. Found at surface in 

 evening in Woods Hole region (May 2, 1888). 



Material examined. — Specimens from Gulf of St. Lawrence 

 (Prince Edward Island), Nova Scotia (Lawrencetown, Halifax Co., 

 September 20, 1957, R. Lane, J. McNeill), Maine (Cross Eiver, 

 Edgecomb), New Hampshire (Emerson's Beach, Oyster River), 

 Massachusetts (Duxbury; Gloucester, Cape Ann; Albatross Station 

 2256, 40°38' N., 69°29' W., 30 fathoms, 1884; Woods Hole, surface 

 in evening, May 2, 1881, V. N. Edwards; Woods Hole region: North 

 Falmouth, Sippowisset, Stony Beach, Nobska, Lackeys Bay, Hadley 

 Harbor, Cuttyhunk; Cape Cod Bay, Vineyard Sound, 17-23 fathoms), 



