U.S. NATIONAL MUSEUM BULLETIN 227 



(Cape Breton), New Brunswick (St. Andrews), Maine (Robbinston, 

 St. Croix; Glen Cove, Penobscot Ba}^; Rockland; Sheepscot River in 

 Boothbay Harbor region; Waites Landing, Casco Bay), New Hamp- 

 shire (Emerson's Beach, mouth Oyster River; Little Bay), Massa- 

 chusetts (Georges Bank, 37-50 fathoms; Plum Island; Essex; Marble- 

 head; Duxbury; Cape Cod, Barnstable, Orleans, Wellfleet, Cape Cod 

 Bay; Woods Hole region; Elizabeth Islands; Nantucket Sound), 

 Rhode Island, Delaware (Delaware Bay), Maryland (Chesapeake 

 Bay), Virginia (Chincoteague Bay), North Carolina (Beaufort), 

 Florida (Seahorse Key). 



Distribution. — Gulf of St. Lawrence to Florida, Gulf of Mexico 

 (Florida, Texas), central California to Lower California and Mexico. 

 Low water to 220 fathoms. 



Glycera robiista Ehlers, 1868 



Figure 54,/-g 



Glycera robusta Ehlers, 1868, p. G56, pi. 24, figs. 31-32. — Berkeley and Berkeley, 

 1948, p. 39, fig. 55; 1954, p. 461; 1960, p. 358.— Hartman, 1950, p. 69, pi. 10, 

 figs. 7-8.— Klawe and Dickie, 1957, p. 2. 



Description. — Length up to 800 mm., width up to 22 mm., 

 segments very numerous. Parapodia with 2 conical subequal presetal 

 lobes, the 2 lobes separated by a deep notch; with 2 low, rounded to 

 slightly conical postsetal lips with only a slight notch between (may 

 be entu-e). Branchiae in the form of blisterlike, dilatable, clear areas 

 on the dorsal and posterodorsal surfaces between the dorsal cirri and 

 the bases of the parapodial lobes (fig. 54:J,g). Proboscis with pro- 

 boscideal organs similar, pear shaped. 



Biology. — Found close to the low water mark and dredged on 

 bottoms of mud, sandy mud with gravel. Rarely taken, as it lives 

 rather deep in the mud, 30 cm. or more, according to W. L. Klawe. 

 Found in the stomach of haddock (Georges Bank, 1954, R. Wigley). 



Material examined.^ — Gulf of St. Lawrence (Laurentian Channel, 

 206 fathoms), Maine (Newcastle, 1952, Ivan Flye; Boothbay Harbor), 

 Massachusetts (Georges Bank, 32-37 fathoms, R. Wigley; Nantucket 

 Sound), Virginia (Chincoteague Bay area, S. McDowell), British 

 Columbia (Barclay Sound), Washington (west side San Juan Island). 



Distribution. — Alaska (Queen Charlotte Islands) to Gulf of Cali- 

 fornia, Japan, Gulf of St. Lawrence to Virginia (Chincoteague Bay), 

 Florida (?). Low water to 206 fathoms. 



Family Goniadidae 



Body long and slender, more or less attenuated at both ends, 

 divided into 2 or 3 regions: a shorter anterior region with uniramous 

 parapodia (fig. 56,6,i) ; a longer and usually wider posterior region 



