46 IOWA STUDIES IN NATURAL HISTORY 



gorgonian was very common in the dredging and almost always 

 a species of simple armed basket fish {Astroschema, spp.) was 

 coiled closely around the branches which it matched so perfectly 

 in color that it was very apt to be overlooked. The protective 

 coloration is so commonly found in serpent stars living as sym- 

 bionts on alcyonarians that many writers have noticed it. 



Professor Nutting says that at Antigua *'our favorite collect- 

 ing ground was near what we called 'Rocky Point,' across from 



Barclay Point and inside of the Pillars of Hercules 



The echinoderms were perhaps the most conspicuous group at 

 this place, although most of the species were the same as those 

 secured at Barbados. At the foot of the Pillars of Hercules 

 certain species found a refuge in the cracks of the rocks that 

 were continually being scoured by the waves. On these rocky 

 flats everything seemed to be stuck tight and had to be forcibly 

 pried loose. There were small holothurians that wedged them- 

 selves in these cracks and held on with remarkable tenacity." 



OPHIURANS PREVIOUSLY OBTAINED AT BARBADOS 



The Ophiurans collected by the "Hassler" at Barbados in 

 100 fathoms 



Astroschema oligactes Ophiothrix angulata 



Astroschema tenuis Ophiothrix suensonii 



Asteroporpa annulata Ophioplax Ijungmani 



Astrocnida isidis Ophiura acervata 



Ophiacantha hirsiita Ophiomusium acuferum 



Ophiacantha stellata Ophiomusium testudo 



Ophiomitra valida Ophioceramis albida 



Am,phiura palmeri Ophioceramis januarii 



Ophiomyces frutectosus Ophiozonella nivea 



Ophiactis duplicata Ophiopcepale goesiana 



The Ophiurans collected at Barbados by the "Blake" 

 Station 272 ; 76 fathoms 



Ophiomyxa tumida Ophiactis miilleri 



Astroschema Iceve Ophiothrix suensonii 



Astroschema oligactes Ophiomusium a<)uferum 



Asteroporpa annulata Ophiomusium testudo 



