a 
nerii, Labidocera, 248 
_ Pontia, 248 
niger, Tetrapygus, 3 
nigromaculata, Sapphirina, 322, 323 
nodifrons, Augaptilus, 206 
Huaugaptilus, 206 
Nogagus, 201 
murrayi, 201 
nordenskjoldi, Plectechinus, 111 
norvegica, Candace, 181 
Candacia, 181 
Euchaeta, 283 
Microsetella, 266 
Pareuchaeta, 283 
Setella, 266 
norvegicus, Heterochaeta, 240 
Heterorhabdus, 240 
notopa, Oncaea, 272 
nudum, Araeosoma owstoni, 20 
obliqua, Brissopsis, 125 
oblonga, Echinometra, 52 
Farrania, viii (pt. 4), 226, 227 
oblongus, Augaptilus, 206 
Huaugaptilus, 206 
obovatus, Isopatagus, 93, 113 
obtusa, Pseudochirella, 317 
Undeuchaeta, 317 
obtusifrons, Amallophora, 162 
Amallothrix, 162, 35 
Chiridius, 189 
occlusa, Salenocidaris profundi, 24 
Ocosia, 70 
gracile, 70, 71 (fig.) 
vespa, 71 
oculata, Macrosetella, 270 
Setella, 270 
Oculosetella, 269, 270 
gracilis, 269 
Oithona, 270 
linearis, 270 
nana, 271 
plumifera, 270 
robusta, 270 
similis, 271 
spinirostris, 271 
Oithonina, 271 
nana, 271 
oldhami, Brissopsis, 126, 128, 129 
Oncaea, 148, 271 
conifera, 271 
gracilis, 191 
minuta, 272 
notopa, 272 
ornata, 272 
similis, 272 
venusta, 273 
Onchocalanus, 273 
affinis, 273 
cristatus, 273 
hirtipes, 273 
steueri, 274 
trigoniceps, 274 
opalina, Sapphirina, 323 
Ophiosphaera insignis, 32 
sp., 32, 49 
INDEX 455 
Oplichthyidae, 72 
Orechinus, 40 
monolini, 40 
orbiculare, Laganum, 102 
orbicularis, Peronella, 102 
ornata, Anomalocera, 163 
Oncaea, 272 
ornatus, Haloptilus, 236 
Hemicalanus, 236 
orsinii, Centropages, 187 
Labidocera, 248 
Osorioia, subg., 68 
ovalis, Eurypatagus, 134 
ovalis, Corycaeus, 195 
Isochaeta, 241 
Lucicutia, 256 
ovata, Maretia, 131, 132 
Scolecithricella, 334 
Scolecithrix, 334 
ovato-lanceolata, Sapphirina, 323 
ovatus, Spatangus, 132 
ovulum, Fibularia, 108 
owstoni, Araeosoma, 20, 21 
Oxycalanus, 267 
semispinus, 266, 267 
oxycephalus, Haloptilus, 237 
Hemicalanus, 237 
Pachos, 274 
punctatum, 274 
pachydactyla, Candace, 182 
Candacia, 182 
Pachyptilus, 274 
abbreviatus, 274 
eurygnathus, 274 
pacificus, Dysgamus, 201, 351 
Pseudanthessius, 315, 351 
pacificus, Corycaeus, 195 
Palaeopneustes, 115 
cristatus, 115 
fragilis, 114 
spectabilis, 115 
Palaeopneustidae, 113 
Palaeostoma, 112 
mirabile, 112 
mirabilis, 112 
Palaeostomatidae, 112 
Palaeotrema, 118 
loveni, 118 
Palaeotropus loveni, 118 
Paleopneustes murrayi, 114 
palescens, Temnotrema, 46 
pallidus, Spatangus, 131 
Synchiropus, 82 
palumbii, Augaptilus, 207 
Disseta, 198 
palumboi, Disseta, 198, 199 
papilliger, Heterorhabdus, 240 
papilligera, Heterochaeta, 240 
Parabelonichthys, 57 
kellersi, 57, 58 (fig.) 
Paracalanus, 275 
aculeatus, 275 
nanus, 275 
parvus, 275 | 
parallela, Brissopsis, 125 
