94 NILS ODHNER, NORTHEEN AND ARCTIC INVERTBB RÅTES. III. OPISTHOBRANCHIA ETC. 



General distribution: 



Norway: Vadsö (Norman 1902); Lofoten S. to Christiansund (G. O. Särs 1878). 

 — Iceland (Mörch 1868). — Greenland (G. O. Särs 1878, Posselt 1898). — East coast 

 of N. America (G. O. Särs 1878). 



Spirialis retroversus (Fleming 1823). 

 Habitat : 



Skagerrack off the coast of Bohuslän (Dec. 1904, Kaudern) numerous young 

 sps. ; Bohuslän: Soteskär (Aug. 1886, Munthe) 10 sps. ; Strömstadsfjorden, 1 m {^^U 

 1892, Hanson) 100 young sps.; N. E. of Käbblingarne ("/s 1890) 10 young sps.; 

 Gullmarn, from the stomach of herings (^Vn 1893, Aurivillius) 10 young sps. 



The North Sea: 57° 29' N. 6° 43' E. (Kinberg) numerous sps. 



Norway: Kristianiaf jorden (M. Särs) 20 sps. — Sörvaer (July 1884) 10 sps. 



General distribution: 



Norway: Lofoten— Kristianiaf jorden (G. O. Särs 1878) ; Trondhjems fjorden (Nor- 

 man 1893). — West european coast, Mediterranean and Canaries (G. O. Särs 1878). 

 — America from Massachusetts Bay to Davis Strait; Iceland (Pelseneer 1888). — 

 Greenland: Cape Farvel (Ostenfeld & Paulsen 1904). 



Olio pyramidata Browne 1756. 

 Habitat : 



North Atlantic: 55° 54' N. 17° 57' W. (1871) c. 35 sps. — 55° 23' N. 11° 24' W. 

 (Amondsen) 6 sps. — 59° 10' N. 11° 56' W. (1861, Amondsen) c. 25 sps. 



General distribution: 



West coast of Norway (G. O. Särs 1878). — Faroe Islands (Mörch 1867). — 

 Iceland (Mörch 1868). — Greenland and Davis Strait (Posselt 1898). — Atlantic from 

 Iceland and Spitzbergen to 40° S. ; Mediterranean; Indian Ocean from the Gulf of 

 Bengal to 40° S.; Africa ; Australia ; Pacific Ocean: Japan, Yellow Sea, China Sea, 

 Malay Archipelago, Fastern Australia to 40° S. : N. E. Pacific to 44° N. ; S. E. Pa- 

 cific to 27° S. (Pelseneer 1888). 



Cavolinia trispinosa (Lesueur 1821). 



distribution: Atlantic from 60° 15' N. (Triton Exp.) to 40° S.; Indian Ocean from the Gulf of Bengal 

 to 41° S.; Africa; Australia; Pacific Ocean: Yellow Sea, Cliina Sea, S. W. Pacific; K E. Pacific to 30° N. 

 (Pelseneer 1888). 



