190 U.S. NATIONAL JMTJSEUM BULLETIN 227 



Material examined. — Few specimens from North Atlantic 

 (Albatross Station 2084, 40° 16' N., 67° 05' W., 1,290 fathoms, 1883; 

 Albatross Station 2103, 38° 47' N., 72° 37' W., 1,091 fathoms, 1883). 



Distribution. — Scattered records in the Arctic: Siberian Arctic, 

 Novaya Zemlya, Barents Sea; also north Japan Sea, North Atlantic 

 (off Long Island Sound to off Chesapeake Bay). In 4 to 1,290 

 fathoms. 



Genus Aglaophamus Kinberg, 1866; emend. Hartman, 1949 



Type (monotypy) : Aglaophamus lyratus Kinberg, 1866. 

 Key to the New England Species of Aglaophamus 



1. Neuropodia with long digitate erect lobe or neuropodial cirrus on upper part 



(fig. 48d). Branchiae begin on setigers 5-8. Prostomium with 2 promi- 

 nent eyes (fig. 48cj. Tentacular segment with slender dorsal tentacular 



cirri (fig. 48c) A. verrilli 



Neuropodia without long digitate lobe on upper part. Prostomium without 

 eyes. Tentacular segment without dorsal tentacular cirri 2 



2. Branchiae begin on setigers 10-15. Posterior parapodial lamellae short, not 



longer than the acicular lobes (fig. 486) A. malmgreni 



Branchiae begin on setiger 2. Posterior parapodial lamellae foliaceous, 

 longer than the acicular lobes (fig. 48a) A. circinata 



Aglaophamus verrilli (Mcintosh, 1885) 



Figure 48,c,(i 



Nephthys verrilli Mcintosh, 1885, p. 163, figs. — Treadwell, in Cowles, 19.30, p. 



341.— Knox, 1960a, p. 115. 

 Aglaophamus dicirris Hartman, 1945, pp. 7, 22; 1950, p. 122, pi. 18, figs. 1-8. 



Description. — Length up to 44 mm., width up to 3 mm., segments 

 up to 50 or more. Prostomium (fig. 48c) long, subrectangular, an- 

 terior margin may be thin, spatulate with translucent areas, with sub- 

 equal antennae, with a pair of conspicuous black eyes on posterior 

 region. Tentacular segment enlarged laterallj'" and ventrally, with 

 ventral tentacular cirri larger than the antennae, with smaller slender 

 dorsal tentacular cirri. Parapodia (fig. AM) with conical acicular 

 lobes. Notopodium with short anterior lamella, large foliaceous pos- 

 terior lamella. Neuropodium with erect digitiform lobe or cirrus on 

 upper edge, a short bilobed anterior lamella, a broad foliaceous pos- 

 terior lamella. Ventral cirri conical; dorsal cirri slender, digitiform. 

 Branchiae cirriform, involute, beginning on setigers 5-8 and continu- 

 ing to near posterior end. Preacicular setae short, barred. Postacic- 

 ular setae of 2 kinds: (1) long, capillary, smooth and (2) short, 

 furcate, spinous. Proboscis with subterminal papillae in 22 longi- 

 tudinal rows, 3 to 9 per row. 



Biology. — Found at low water in silty sand and dredged on bottoms 

 of mud. 



