Amphiduros pacificus, new species 65 



Genus Ophiodromus Sars 66 



Ophiodromus pugettensis (Johnson) 67 



Genus Oxydromus Grube 68 



Oxydromus arenicolus glabrus, new subspecies .... 68 



Oxydromus brunnea, new species 69 



Family SYLLIDAE 70 



Genus Autolytus Grube 72 



Autolytus varius Treadwell 72 



Autolytus cornutus Agassiz 72 



Autolytus spp 72 



Genus Exogone Oersted 73 



Exogone uniformis, new species 73 



Genus Exogonella, new genus 74 



Exogonella brunnea, new species 74 



Genus Plakosyllis Hartman-Schroder 75 



Plakosyllis americana, new species 75 



Genus Odontosyllis Claparede 76 



Odontosyllis phosphorea Moore 76 



Odontosyllis spp 77 



Genus Typosyllis Langerhans 77 



Ty posy His armillaris (Miiller) 77 



Genus Calamyzas Arwidsson 78 



Calamyzas amphictenicola Arwidsson 78 



Family SPHAERODORIDAE 79 



Genus Sphacrodorum Oersted 79 



Sphacrodorum papillifer Moore 79 



Sphacrodorum minutum (Webster and Benedict) ... 80 



Family EUNICIDAE 80 



Genus Marphysa Quatrefages 80 



Marphysa disjuncta, new species 81 



Marphysa conferta Moore 83 



Marphysa mortenseni Monro 83 



Marphysa stylobranchiata Moore 84 



Marphysa sanguinea (Montagu) 84 



Family ORBINIIDAE 85 



Genus Naineris Blainville 85 



Naineris quadricuspida (Fabricius) 85 



Family PARAONIDAE 86 



Genus Paraonis Grube 86 



Paraonis platybranchia, new species 86 



