POLYCHAETE WORMS, PART 1 225 



prostomium) , with 4 small biarticulate antennae (fig. 58, a-b). Para- 

 podia of first segment smaller than following. Neurosetae compound 

 spinigers arranged in fan-shaped groups. Notosetae simple, slender, 

 hairlike, arranged in fan-shaped groups. Two subulate anal cirri. 

 Proboscis cylindrical with surface covered with minute papillae or 

 proboscideal organs, with bilateral series of chitinous, dark, V-shaped 

 chevrons near base (fig. 58c). 



Key to the New England Species of Goniada 



1, Neuropodial presetal lobe of anterior region (at least up to segment 18) 



entire, not bilobed (fig. 58e) ; anterior uniramous region of about 39 seg- 

 ments (38-40), with no intermediate region; proboscis with a series of about 



9 chevrons (7-11) G. niaculata 



Neuropodial presetal lobe of anterior region bilobed from segment 3 on 

 (fig. 59a); proboscis with a series of about 18 chevrons (1.3-21) .... 2 



2. Anterior uniramous region of about 34 segments (33-37), with a long inter- 



mediate region up to about segments 80-85 G. norvcgica 



Anterior uniramous region of about 44 segments (38-50), with ahiiost no 

 intermediate region G. brunnea 



Goniada maculata Oersted, 1843 



Figure 58 



Goniada maculata Verrill, 1881, pp. 289, 297, 299, 304, 308, 311, 316.— Webster 

 and Benedict, 1887, p. 726.— Whiteaves, 1901, p. 79.— Fauvel, 1923, p. 392, 

 fig. 154,a-g.— Procter, 1933, p. 141.— Day, 1934, p. 48; 1960, p. 333.— 

 Annenkova, 1937, p. 166; 1938, p. 165.— St0p-Bowitz, 1941, p. 209, fig. 7,a-g; 

 1948b, p. 9.— Wesenberg-Lund, 1949, p. 290; 1950a, p. 24; 1950b, p. 66; 

 1951, p. 51.— Hartman, 1950, p. 20, pi. 1, figs. 7-8.— Uschakov, 1955, p. 173, 

 fig. 48.— Clark, 1960, p. 22. 



Description. — ^Length up to 100 mm., segments up to 200. 

 Anterior uniramous region of about 39 segments (38-40). Parapodia 

 (fig. 58^) with dorsal and ventral cirri elongate, with presetal lobe 

 longer, digitiform, single up to about segment 18, unequally bilobed 

 up to the posterior region, Postsetal lobe shorter, rounded. Posterior 

 biramous region wider, more flattened, with parapodial rami well 

 separated (fig. 58,f,g). Dorsal cirri large, flattened. Notopodium 

 with conical presetal lobe about same length as dorsal cirri, without 

 postsetal lobe. Neuropodium with postsetal lobe wide, short, lanceo- 

 late, with presetal lobe longer, bilobed with lobes subequal, pointed. 



Proboscis (fig. 5S,c,d) with bilateral series of about 9 chevrons 

 (7-11). Distal part with 2 dentate macrognaths each with 5-8 

 teeth. Three X-shaped micrognaths in ventral arc and 4 smaller 

 Y-shaped ones in dorsal arc. Color: light green to bright lemon 

 yellow; anterior end greenish, orange more posteriorly. 



Biology. — Found at low water and dredged on bottoms of clay, 

 mud, mud mixed with sand, fine gravel, rocks, shells, and worm 



