CONTENTS. 



Stylasteridae. 



Pas 



Introduction I 



The Stylasteridae of the North Atlantic 3 



Pliobothrus Po u r t a 1 es 3 



Pliobothrus symmetrica* Pourtales 3 



Stylasler G r a y 7 



Stylaster gemmascens (Esper) 8 



roseiis (Pallas) 12 



— norvegicus (Gunnerus) 15 



Remarks on the affinities and systematic position of the Hydrocorallines 19 



Zoogeographical remarks oil the North Atlantic Stylasteridae 22 



Literature 



4189G 



