262 U.S. NATIONAL MUSEUM BULLETIN 22 7 



teeth; maxillae iii slender, triangular, each with a single tooth; 

 maxillae iv large, triangular, each with a single tooth. 



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



Material examined. — Off Massachusetts (40°15' N., 67°05' W.) 

 to off North Carolina (35°49' N., 74°34' W.), several Albatross stations, 

 58 to 1,299 fathoms. 



Distribution. — Off northwest Spain, off Massachusetts to North 

 Carolina, off southern California, Antarctic (Palmer Archipelago). In 

 58 to 2,228 fathoms. 



Lumbrineris fragiUs (O. F. Miiller, 1776) 



Figure 69 



Lumbrinereis fragiUs Verrill, 1881, pp. 297, 299, 301, 304, 308, 311, 316.— Webster 

 and Benedict, 1884, p. 720; 1887, p. 725.— Procter, 1933, p. 140.— Berkeley 

 and Berkeley, 1956a, p. 236.— Clark, 1960, p. 23.— Eliason, 1962, p. 253. 



Lumbrinereis acicularum Webster and Benedict, 1887, p. 725, pi. 4, figs. 65-59. 



Lumbriconereis fragiUs Whiteaves, 1901, p. 80. — Fauvel, 1923, p. 430, fig. 171, 

 fc,^— Uschakov, 1955, p. 242. 



Lumbrineris fragiUs Fettibone, 1954, p. 275, fig. 31,/i-n; 1956a, p. 560. 



Description. — Length up to 380 mm., width up to 12 mm., seg- 

 ments up to 340. Parapodia with presetal lobe short, rounded, with 

 postsetal lobe longer, rounded, diagonally truncate (fig. 69c), becoming 

 somewhat digitiform and extending dorsally in middle and posterior 

 segments (fig. 69f/). Parapodia of anterior region with setae all simple, 

 arched, limbate, with fine capillary tips (fig. 69e). Simple hooded 

 hooks beginning on about setiger 30 (15-50; fig. 69^). Setae dark 

 amber colored on basal half. Acicula black. Proboscis with maxillae 

 II each with 4-5 teeth; maxillae iii with usually a single tooth (may 

 be 2) ; maxillae iv each with a single tooth (fig. Q5j). Color: iridescent, 

 reddish orange or brown, yellowish with whitish transverse bands. 



Biology. — Found at low water on bottoms of mud, muddy sand, 

 gravelly mud, and shifting sand. Dredged on bottoms of sticky and 

 soft mud, silty clay, various combinations of mud, sand, gravel, peb- 

 bles, stones, worm tubes, shells, and detritus. They have been found 

 in the stomach of cod and haddock. They contain large eggs in 

 August in the Woods Hole area (Moore, ms.). 



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

 Chaleurs, south of Anticosti Island, 4-140 fathoms), Newfoundland, 

 Nova Scotia (Cape Breton Island), New Brunswick (St. Andrews), 

 Maine (Robbinston and Red Beach, St. Croix River; Glen Cove, 

 mouth of Penobscot Bay; Muscongus Bay near Hog Island; Boothbay 

 Harbor region) , New Hampshire (mouth Sagamore Creek; Hampton 

 Beach), Massachusetts (Georges Bank, 27-185 fathoms; Marblehead; 



