48 IOWA STUDIES IN NATURAL HISTORY 



Astroschema oligactes Ophiomusium acuferwm 



Amphiura stimpsonii Ophiomusium testudo 



Ophiactis milllet'i Opliiozona impressa 



Station 279 ; 118 fathoms 



Ophiocreas spinulosum 



Station 280 ; 221 fathoms 



Ophiochondrus convolutus Ophiotreta sertata 



Ophiacantha pentacrinus Ophiomusium eburneum 



Ophiocamax hystrix Ophiomusium serratum 



Ophiozonella nivea 



Station 281 ; 288 fathoms 



Ophiomyxa tiimida Ophiacantha scutata 



Astroschema arenosum Ophiomyces friitectosus 



Ophiocreas lumhricns Amphiophiura fasciculata 



Ophiocreas spinidosum Ophiomusium acuferum 



Station 282 ; 154 fathoms 



Ophiomyces frutectosus Ophiozonella tessellata 



Station 283 ; 237 fathoms 



Ophiacantha aspera Ophiacantha valenciennesi 



Ophiomitra valida 



Station 285 ; 13-40 fathoms 



Ophiomyxa tumida Ophiothrix suensonii 



Ophiothrix angulata Ophiopsila riisei 



Ophioderma hrevispina 



Station 286 ; 7-45 fathoms 



Ophiothrix suensonii 



Station 287 ; 71/2-50 fathoms 



Ophiopsila polysticta 



Station 288 ; 399 fathoms 



Ophiacantha metallacta Ophiomastus secundus 



Ophiacantha pentacrinus Ophiomusium monoplax 



Ophioplinthaca incisa Ophiozonella antillarum 



Amphiura goniodes Ophiernus adspersus 



