32 U.S. NATIONAL MUSEUM BULLETIN 2 27 



Description. — Length up to 25 mm., width including setae up to 

 7 mm., segments 36. Elytra relatively large, covering dorsum, with 

 scattered microtubercles over complete surface and with additional 

 elongate filiform papillae on exposed part, with brownish pigment on 

 medial halves. 



Biology. — Dredged on bottoms of mud, clay and silty clay. 



Material examined. — Off Massachusetts (Georges Bank), 90 to 

 130 fathoms. 



Distribution.— Few scattered records from Gulf of Maine to 

 Cape Cod, Massachusetts. In 72 to 150 fathoms. 



Genus Austrolaenilla Bergstrbm, 1916; emend. Pettibone, 1955 



Type (monotypy): Austrolaenilla antarcticaBergstr 6m, 1916. 



Both species have the prostomium with four large eyes, visible 

 dorsally, with distmct cephalic peaks. Notopodia and nem-opodia 

 with prominent digitiform acicular lobes. Setae golden yellow. 

 Notosetae shorter and stouter than neurosetae, with nmnerous spinous 

 rows. Neurosetae slender, spinous, with secondary tooth and hairs 

 on distal tip. 



Key to the New England Species of Austrolaenilla 



1. Elytra 15 pairs. Neurosetae with hairs extending up to or slightly beyond 

 distal tip (fig. 4c). Notosetae arched, with spinous rows extending nearly 



to distal tip A. lanelleae 



Elytra 16 pairs. Neurosetae with hairs longer (fig. 4d). Notosetae nearly 

 straight, with pointed bare tips A. mollis 



Austrolaenilla mollis (Sars, 1871) 



Figure 4d 



Laenilla mollis Sars, 1873, p. 207, pi. 14. — Verrill, w Smith, Harger, and Verrill, 



1874, pp. 16, 35. 

 Antinoe mollis Mcintosh, 1900, p. 369, figs. 

 Harmothoe rtiollis Wesenberg-Lund, 1950b, p. 24. 

 Antinoella mollis Hartman, 1959a, p. 83. 



Description. — Length up to 50 mm., width including setae up to 

 23 mm., segments up to 43. Body large, flattened dorsoventrally, 

 banded with brown. Elytra 16 pairs, large, thin, soft, transparent, 

 covering the dorsum except for last few posterior segments, smooth 

 except for few scattered pointed papillae on surface (may be lacking) 

 and few microtubercles on anterior curved part. 



Biology. — Dredged on bottoms of mud, sandy mud, and gravel. 



Material examined. — Off Newfoundland, Gulf of St. Lawrence 

 (South Anticosti Island), Massachusetts (Georges Bank, Martha's 

 Vineyard, Provincetown) , in 20 to 471 fathoms. 



