POLYCHAETE WORMS, PART 1 75 



without color or irregularl}^ pigmented with brown, cirri deep reddish 

 brown. 



Biology. — Dredged on bottoms of stones and rocks, sand, muddy 

 sand with shells, stones with barnacles, sand dollars. 



Material examined. — Type of AI. viridis from Eastport, Maine, 

 Gulf of St. Lawrence (Gaspe Bay, 5 fathoms). 



Distribution. — Scattered records in the Arctic and Antarctic. 

 Also Ireland, Madeira, Mediterranean, Gulf of St. Lawrence to 

 Maine, west coast North America (Washington). In 4 to 214 fathoms. 



Genxis Paranaitis Soiitheni, 1914 



Anaitis Malmgren, 1865, preoccupied by Duponchel (1829, Lepidoptera) ; type 

 (monotypy): Anaitis wahlbergi Malmgren, 1865. 



Both species have the prostomium suboval, with a more or less 

 distinct posterior extension, with 4 frontal antennae, 2 large eyes 

 (fig. 17a). First 2 segments fused dorsallv, prolonged anteriorly and 

 embracing the sides of the prostomium, with 3 pau's tentacular cirri. 

 Fourth pair tentacular cirri on segment 3 (first setigerous). Tentac- 

 ular cirri stouter basally, tapering to slender tips. Upper 2 pairs 

 longer, extending to setiger 4. Lower 2 pairs shorter. Dorsal cirri 

 large, overlapping neatly. Ventral cirri elongate ovate, posterior to 

 lower half of parapodial lobe. Parapodial lobe cjdindrical, bilabiate 

 distally, with long slender compound setae. Anal cirri oblong oval. 



Key to the New England Species of Paranaitis 



1. Dorsal cirri broadly ovate, asymmetrical, lateral sides longer than medial 



sides P. speciosa 



Dorsal cirri subreniform, nearly symmetrical (fig. 17 d) ... P. kosteriensis 



Paranaitis speciosa (Webster, 1880) 



Figure 17a 



Anaitis speciosa Webster and Benedict, 1884, p. 702; 1887, p. 710. — ^Webster, 



1886, p. 131, pi. 4, figs. 8-9. 

 Anaitis formosa Verrill, 18S5b, p. 433.— Hartman, 1944a, p. 337, pi. 23, fig. 8. 

 Anaitis pida Verrill, 1885b, p. 433.— Hartman, 1944a, p. 338, pi. 14, fig. 1. 

 Paranaitis speciosa Treadwell, in Cowles, 1930, p. 341 (part; mixed with Eteone 



heteropoda) . 



Description. — Length up to 18 mm., width up to 3 mm., segments 

 up to 55. Body widest in middle, tapering gradually posteriorly and 

 more so anteriorly, slightly convex dorsally, flattened ventrally. 

 Prostomium without nuchal papilla. Proboscis narrow, cylindrical, 

 papillated. Color, in life: somewhat variable, iridescent, greenish 

 yellow mth reddish spots middorsally and laterally at the bases of 

 the dorsal cirri and the parapodia, with coalesced transverse reddish 



569-457—63 6 



