Polychaeta 23 B 
Well known from the Arctic and North Atlantic, and occurring as far 
south as the Mediterranean sea. On the American side it has been previously 
recorded from Greenland and Davis strait, Labrador, New England, and Bering 
sea. 
Thelepus cincinnatus (Fabricius). 
1780. Amphitrite cincinnatus Fasricius, Fauna Groeal., p. 286. 
1817. Terebella cincinnata Savieny, Syst. Annel. 
1818. Sabella conchilega Montagu, Trans. Linn. Soc. Lond. 12. 
1826. Terebella lutea Risso, Hist. Nat. Eur. Merid., 4. 
1847. Terebella mandida, Fry and Leucxart, Beitr. Wirb. Thiere, p. 154. 
1849. Thelepus Bergmanni Leucxart, Archiv. Naturg., 15, pt. I, p. 169. 
1853. Lumara flava Stimpson, Marine Inverteb. Grand Manan, p. 30. 
1860. Terebella pustulosa Gruss, Archiv. Naturg., 26, pt. 1, p. 100. 
1865. ig circinnatus Maumaren, Ofvers. vet. Akad. Forh., p. 381, 
pl. 22, f. 58. 
——. Venusia punctata Jounston, Cat. Annel. Brit. Mus. 
——. Heterophyselia cincinnata QuaTREFAGES, Hist. Annel., 2, p. 387. 
——. Phenacia terebelloides QUATREFAGES, op. cit., p. 375. 
——. Phenacia pulchella Parrirr. 
1869. Phenacia ambigrada CLaparmpe, Annel. Golfe Naples, p. 402, pl. 18, f. 6. 
——. Phenacia retrigrada CLAPEREDE, ibid., p. 408, pl. 18, f. 7. 
1871. Thelepodopsts flava Sars, Vidensk. Selsk. Forh. 
1902. Thelepus antarcticus WiuuEy, Polychet. Voyage of Southern Cross. 
Loca.tiry.—Hudson strait Ungava: King George’s sound. September 9, 
1897. Diana Expedition. Low and Wakeham. One specimen in poor con- 
dition, with tube. 
A species of exceedingly wide distribution, occurring in the Antarctic as 
well as the Arctic region, where it is abundant, and also found in both the Atlantic 
and Pacific oceans, probably more or less continuously between the two polar 
regions. 
Terebellides stroemi Sars. 
1835. Terebellides Stroemi Sans, Beskriv. og Iakttag., p. 48, pl. 13, f. 3la-d. 
1846. Corephorus elegans Gruse, Archiv. Naturg., 12, 1. 
1853. Terebella pecten DaLvELL, Pow. Great., 2, p. 208, pl. 26, f. 9. 
1874. Terebellides gracilis Maumaren, Goteborg. K. Vetensk. och Vitterh. 
Handl., ny tidsf., 14. 
Locauitiges.—North of Alaska: Station 23 (latitude 70° 24’ N., longitude 
161° 25’ W). August 19, 1913. Depth 9 to 10 fathoms. Gray mud with 
pebbles; no alge. Alaska: Collinson point. Station 27s. October 3, 1913. 
Depth, 3 fathoms. Bottom, mud with pebbles. 
Two specimens which seem fully to conform to this species. It is a wide- 
spread and commonly abundant species in Arctic and northern waters, and 
extends southward in the Atlantic to the Mediterranean on the eastern and to 
southern New England on the western coast and in the Pacific to Japan. 
AMPHARETIDAE. 
Samytha sexcirrata (Sars). 
1856. Sabellides sexcirrata Sans, Fauna litt. Norvegie, 2, p. 23. 
1865. Samytha sexcirrata MaumcreN, Ofvers. k. vet. Akad. Férh., p. 370, 
pl. 20, f. 49-49D. 
Locatiry.—North of Alaska. Station 23. (Latitude 70° 24’ N., longitude 
161° 25’ W.) August 19, 1918. Depth 9 to 10 fathoms Gray mud with 
pebbles; no alge. 
