691 



Page 226. Stenothoe marina. 



I have found this form of late years in great abundance within the 

 gill-sac of different Ascidise. 



Page 250. Metopa Alderi. 



Distribution, - Coast of France (Chevreux). 



Page 254. Metopa borealis. 



I have recently met with this form rather frequently in the Stavanger- 

 fjord in 2030 fathoms, on rocky bottom among algse. 

 Distribution. British Isles (Robertson). 



Page 255. Metopa rubrovittata. 



Distribution. British Isles (Robertson), coast of France (Chevreux). 



Page 256. Metopa pusilla. 



Distribution. British Isles (Herdman). 



Page 260. Metopa affinis. 



Distribution. British Isles (Robertson). 



Page 261. Metopa Bruzelii. 



Distribution. British Isles (Herdman). 



Page 273. Metopa longimana. 



Distribution. - Coast of France (Chevreux). 



Page 276. Metopa nasuta. 



Distribution. British Isles (Robertson), Greenland (Hansen). 



Page 296. Monoculodes carinatus. 



Found occasionally in the outer part of the Christianiafjord (Sande- 

 sund), on sandy bottom. 



