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26 
Sertularia Fabricii Levinsen. 
Sertularia Fabricii Levinsen 1892. 
Thujaria Broch 1 
—  Nutting 1904. 
— —  Jåderholm 1909. 
Godthaab Fjord, Stat. 52 (one colony with gonothecæ), Store 
Hellefiskebanke, Stat. 100 (one colony, 9 cm. high, with many male 
gonothecæ; the keel of the gonothecæ is. faintly developed, without 
any spine). — Recorded by Levinsen from the same two locali- 
ties and from Julianehaab, by Jåderholm from Lat. 70!/2? N 
— Known from West-Greenland and Iceland; Pacific from Alaska 
to Puget Sound. 
Thujaria thuja (Linné) Fleming. 
Sertularia thuja Linné 1767. 
Thujaria — Fleming 1828. 
— Levinsen 1892, 
— — … Jåderholm 1909. 
Godthaab Fjord, Stat. 52, 293 m. (6 large colonies). — Cir- 
cumpolar and in the subarctic waters of the Atlantic and the Pacific. 
Thujaria hippuris Allman. 
Thujaria hippuris Allman 1874. 
Store Hellefiskebanke off Holstensborg, Stat. 100 (upper part 
of a colony), and Stat. 397 (3 colonies, two of which are fertile). 
— The branches are slender and more faintly bent than in the 
case of Th. thuja; the distance between the hydrothecæ is about 
|z of their length, somewhat varying. — Northern Atlantic. 
Thujaria laxa Allman. 
ilentgdee laxa Allman 1874. 
amp 1911. 
Store Hellefiskebanke, Stat. 100 (one colony, 17 cm., without 
gonothecæ) and 371 (one colony, 48 cm. with some few gonothecæ); 
45 miles WSW. of Egedesminde, Stat. 199 (2 colonies. 24 and 
29 cm.). — Occurrence: West-Greenland, North-East Greenland, 
