23 
im abundance. — On Fylla's Banke off Godthaab, Stat. 40 (spar- 
ingly on a Bryozoan and on Antennularia antennina), near Fiske- 
næs, Stat. 465 (not uncommon), Lille Hellefiskebanke, Stat. 419 
and 422 (some small colonies), Store Hellefiskebanke, Stat. 100 
(not uncommon, a. 0. some colonies on Ascidiæ), 45 miles WSW. 
of Egedesminde, Stat. 199 (one small colony on Lictorella pinnata), 
outside Fortunebay on the south coast of Disco, Stat. 180 (spar- 
ingly on Lafoéa fruticosa). — Levinsen records the species from 
Frederikshaab, Store Hellefiskebanke and Egedesminde. Abundant 
at North-East Greenland (Kram p). 
The species is common in all arctic waters whence it spreads 
Southwards into the subaretic and boreal areas, being found on the 
Atlantic coasts of Europe and North America, along the whole of 
the west coast of North America and off Japan. 
Sertularella polyzonias (Linné) Gray. 
Sertularia Polytenide Linné 1767. 
Sertularella Gray 1848. 
en medliarkndi Hartlaub 1901. 
ry polyzonias, forma typica Broch 1909 b. 
In Godthaab Fjord, Stat. 52, some small: colonies were found 
on Stegopoma plicatile and Lafoéa fruticosa. — Levinsen records 
it from several places between Godthaab and Lat. 67/2” N. in the 
Davis Strait. According to Stechow.(1912) this species is iden- 
tical with 8. mediterranea Hartlaub. — Cosmopolitan. 
Sertularella gigantea Mereschkowsky. 
S. polyzonias var. gigantea Hincks 1874. 
» gigantea Mereschkowsky 1878. 
— Jåderholm 1909. 
» E Belgodnkdis; forma gigantea Broch 1909 b. 
» Jigantea Kramp 191 
Near Fiskenæs, Stat. 465 (in great abundance on Ascidiæ 
etc.), Lille Hellefiskebanke, Stat. 419 (some large colonies on Thu- 
Jaria alternitheca), outside Fortunebay, Disco, Stat. 180 (in great 
