554 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 105 



Genus Paranattis Southern, 1914 



Paranaitis kosteriensis (Malmgren, 1867) 



Anailis kosteriensis Malmgren, 1867, p. 20. — Bergstrom, 1914, p. 156, fig. 52. 

 Paranaitis wahlbergi Southern, 1914, p. 67, pi. 8, fig. 16 (see Fauvel, 1923); not 



Anaitis wahlbergi Malmgren, 1865. 

 Phyllodoce (Anaitis) kosteriensis Fauvel, 1923, p. 157, fig. 56,a-c. 



Description: Length 35 mm., width without setae 4 mm. (up to 

 85 mm. long, Bergstrom, 1914). Segments numerous, 82 (specimens 

 from Labrador) to about 155 (Fauvel, 1923). Body rather slender, 

 flattened dorsoventrally, slightly attenuated anteriorl}' and posteri- 

 orly. Prostomium oval, with a distinct posterior extension, usually 

 with an occipital tubercle (not seen on specimen examined; hidden 

 by tentacular segment?), with 4 short antennae and 2 large eyes each 

 with a distinct lens. Tentacular chri rather slender, longest reach 

 setiger 4. Dorsal cirri large, imbricated, reniform, nearly sjonmetrical, 

 easily detached. Distal tips of bifid setigerous lobe with upper lobe 

 longer than the lower one. Color in alcohol : Without color or irregu- 

 larly streaked deep purplish. 



Remarks: P. kosteriensis has been referred to P. wahlbergi Malm- 

 gren b}^ Ditlevsen (1909, 1917), Southern (1914), and others; the two 

 species appear to be distinct. In P. wahlbergi (specimens examined 

 from Greenland and Canadian Arctic), the body is stouter (6-9 mm. 

 wide without setae) ; the prostomium is oval, without distinct posterior 

 extension, without occipital tubercle; the distal tips of the bifid 

 setigerous lobes are subequal or upper lobes slightly longer. 



New record: Labrador: East end Lake Melville, mud, 70 

 fms.; 1 specimen. Station 29. 



Distribution: Sweden, Scotland, Ireland; Labrador. In 6 to 

 185 fathoms. 



Family Hesionidae 

 Genus Castalia Savigny, 1820; emend. Fauvel, 1923 



Castalia aphroditoides (Fabricius, 17S0) 



Castalia aphroditoides Wesenberg-Lund, 1953, p. 34. — Pettibone, 1954, p. 239, 

 fig. 28,a,b. 



New records: Labrador: Kaipokok Inlet, 45 fms., silt bottom; 

 2 specimens, Stations 7, 8. 



Distribution: Widely distributed in the Arctic. Also Bering 

 Sea;;,Denmark; Hudson Bay to Labrador. In 2 to 75.5 fathoms. 



