CONTENTS. 



Stylasteridae. 



Page 



Introduction I 



The Stylasteridae of the North Atlantic 3 



Pliobothrus Pourtales 3 



Pliobothrus symmetricus Pourtales 3 



Stylasier Gray 7 



Sty taster gemmascens (Esper) 8 



roseus (Pallas) 12 



norvegicus (Gunnerus) 15 



Remarks on the affinities and systematic position of the Hydrocorallines 19 



Zoogeographical remarks on the North Atlantic Stylasteridae 22 



Literature 



