CONTENTS 



Introductory Remarks ° 



Family HEMIEURYALIDAE 



Genus Sigsheia Lyman 



Sigsbeia laevis, new species 9 



Family OPHIACANTHIDAE 



Genus Ophiacantha Miiller and Troschel 



Ophiacantha pliragma, new species 11 



Genus Ophiomyces Lyman 



Ophiomyces multispinus, new species 13 



Family AMPHIURIDAE 



Genus Ophiophragmus Lyman 



Ophiophragmus disacanthus, new species 15 



Ophiophragmus lonchophorus, new species 16 



Ophiophragmus ophiactoides, new species 18 



Ophiophragmus papillatus, new species 19 



Ophiophragmus stellatus, new species 21 



Genus Amphichondrius Nielsen 



Amphichondrius laevis, new species 22 



Genus Amphiodia Verrill 



Amphiodia sculptilis, new species 24 



Genus Ophiocnida Lyman 



Ophiocnida californica, new species 25 



Genus Amphioplus Verrill 



Amphioplus philohelminthius, new species 27 



Family OPHIOCHITONIDAE 



Genus Ophionereis Liitken 



Ophionereis dictyota, new species 29 



Ophionereis perplexa, new species 30 



Genus Ophiodesmus, new genus 33 



Ophiodesmus amphilogus, new species 33 



Family OPHIOLEPIDIDAE 



Genus Ophiomisidium Koehler 



Ophiomisidiurn leurum, new species 35 



Genus Amphiophiura Matsumoto 



Ampliiophiura irregularis, new species 36 



Amphiophiura paucisquama, new species 39 



Genus Ophiolepis Miiller and Troschel 



Ophiolepis plateia, new species 4-1 



