691 



Page 22G. Stenothoe marina. 



I have f'oiiiul this form of late years in great abiindance within the 

 gill-sac of different Aseidiae. 



Page 250. NIetopa Alderi. 



Distribution. — Coast of France (Chevreux). 



Page 254. Metopa borealis. 



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

 fjord in 20—30 fathoms, on rocky bottom among algae. 

 Distrib/itioH. — British Isles (Robertson). 



Page 255. Metopa rubrovittata. 



Bistribittioi/. — 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 (Sando- 

 sund), on sandy bottom. 



