8 



CONTENTS. 



Page 



Polylepididae 91 



Key to Genera 91 



Synonymy of Genera 91 



Palmyridae 92 



Key to Genera 92 



Chrysopetalidae 92 



Key to Genera ....... 92 



Nepthydidae 92 



Nepthys Cuvier 93 



N. ectopa, sp. nov 94 



N. sp 97 



Phyllodocidae 97 



Key to the Snbt'amilies and Genera . 99 



Synonymy of Genera 101 



Anaitides Czerniawsky 102 



Key to Species 102 



A. lamellifera (Pallas) 10.3 



A. patagonica (Kinberg) . . .' . 104 



A. compsa, sp. nov 10.5 



Phj-llodoce Savigny 108 



P. fakaravana, sp. nov 108 



P. medipapillata Moore . . . . Ill 



P. sp. a HI 



P. sp. b 112 



P. sp. c 113 



Lopadorrhynchus Grube . . . . 113 



Key to Species 1 14 



L. parvum, sp. nov 114 



L. nans, sp. nov 116 



Mastigethus, gen. nov 119 



M. errans, sp. nov 120 



Pelagobia Greeff 122 



Key to Species 122 



P. viguieri Gravier 122 



Nans, gen. nov 125 



N. simplex, sp. nov 125 



Pontodoridae 127 



lospilidae 127 



Key to Genera 128 



Lacydoniidae 128 



Otopsidae . 128 



Pisionidae 128 



Key to Genera 128 



Alciopidae 129 



Key to Genera 130 



Alciopa Audouin & Milne Edwards . 130 



A. cantrainii (Delle Chiaji) . . . 130 



Torea Quatrefages 131 



T. pelagica, sp. nov 131 



