60 IOWA STUDIES IN NATURAL HISTORY 



Station 56 : 



Leptonemaster venustus 

 Station 57 : 



Hemieuryale piistulata 

 Station 58 : 



Asteroporpa annulata 

 Station 59 : 



Astroschema tenue Ophiothrix suensonii 



OpMacantJia mesembria Leptonemaster venustus 



Station 62 : 



Ophiothrix suensonii Ophiozonella tessellata 



Station 64: 



Hemieuryale pustuhta 

 Station 65: 



Ophiothrix angulata 

 Station 67 : 



Ophiactis miilleri Leptonemaster venustus 



Ophiothrix angulata Comactinia meridionalis 



Station 70 : 



Hemieuryale pustulata Ophiothrix angulata 



Ophionereis reticulata 



Station 78 : 



Ophiothrix angulata Leptonemaster venustus 



Ophioderma cinerea Comactinia meridionalis 



Station 79 : 



Amphipholis li7n'bata Ophiomusium testudo 



Ophionereis reticulata Nemaster discoidea 



Station 82 : 



Hemieuryale pustidata 

 Station 85: 

 Ophiothrix angulata Comactinia meridionalis 



Station 89 : 



Ophiothrix suensonii 

 Station 92: 



Nemaster discoidea 



