POLYCHAETE WORMS — PETTIBONE 556 



Family Syllidae 



Genus Autolytus Grube, 1850 

 Autolytiis alexandri Malmgren, 1867 



Autolytus alexandri Pettibone, 1954, p. 246. 



New record: Labrador: Strait of Belle Isle, 30-40 fms.; 1 

 specimen, Station 22. 



Distribution: Widely distributed in the Arctic. Also Iceland, 

 Labrador to North Carolina; Bering Sea to Washington. In low- 

 water to 123.5 fathoms; sexual forms at surface. 



Autolytus fullax IMalmgreii, 1867 



Autolytus fallax Pettibone, 1954, p. 247, fig. 29,c-f. 



New records: Labrador: Nain, Strait of Belle Isle, 25-60 fms., 

 on bottoms of coral and rock; in transparent tube on old Pectinaria 

 tube; 2 specimens, Stations 2, 62. 



Distribution: Widely distributed in the Arctic. Also Faroes; 

 Labrador. In low water to 75.5 fathoms; sexual stolons at surface. 



Genus Sphaerosyllis Claparede, 1863 

 Spluierosyllis erinaceus Claparede, 1863 



Sphaerosyllis erinaceus Pettibone, 1954, p. 255, fig. 28,m. 



A single specimen of 20 segments, 1.5 mm. long and 0.3 mm. wide 

 without setae. 



New record: Labrador: Strait of Belle Isle, 25 fms., coral and 

 rock; 1 specimen. Station 2. 



Distribution: Widely distributed in the Arctic. Also Iceland, 

 Denmark to English Channel and the Baltic; Labrador to Massachu- 

 setts; Bering Sea; north Japan Sea. In low water to 75.5 fathoms; 

 sexual forms at surface. 



Genus EusylUs Malmgren, 1867 



Eusyllis hlomstrandi Malmgren, 1867 



Eusyllis hlomstrandi Wesenberg-Lund, 1953, p. 38.— Pettibone, 1954, p. 260, 

 fig. 28,g-i. 



Length 5.5-11 mm., width without setae 0.8-1 mm. Segments 

 47-52. Includes two epitokous females and a male, with 16 anterior 

 unmodified setigers, 25-27 setigers with long capillary setae, and 5-8 

 posterior mimodified setigers. 



New records: Labrador: Hamilton Inlet, Strait of Belle Isle, 

 15-30 fms., on bottoms of rock, stones, with bryozoans; 21 specimens, 

 Stations 1, 2, 22, 26, 58. 



366148—66- 



