34^ 



THE CRUSTACEA 



72 ; of Apoda, 129 ; of 

 Ascothoracica, 127 ; of 

 Branchiopoda, 48 ; of 

 Cirripedia, 107, 121 ; 

 of Decapoda, 292 ; of 

 Eucopepoda, 87 ; of Eu- 

 phausiacea, 249 ; of Os- 

 tracoda, 67 ; of Rhizo- 

 cephala, 133 



Naupliiis-eye, 17 ; of Bran- 

 chiopoda, 46 ; of Cope- 

 poda, 84 ; of Decapoda, 

 287 ; of Euphausiacea, 

 248 ; of Ostracoda, 66 



Nautilograpsus, 315 



Nebalici, 30, 147, 151, 152, 

 154, 156, 159, 160, 161 



Nebaliacea, 1, 143, 151, 

 161 



NeballeUa, 153, 154, 155, 

 161 



Nebaliidae, 161 



Nebaliopsis, 153, 154, 155, 

 156, 159, 160, 161 



Neck gland of Branchio- 

 poda, 43 



Ncmatohrachion, 247, 252 



Nematocarcinidae, 311 



Nematocarcinus, 311 



Nematoscelinae, 252 



Nematoscelis, 246, 247, 

 248, 251, 252 



NeolUhodes, 262, 313 



jVephro2}s, 256, 258, 300, 

 312 



Nephropsidae, 312 



Nephropsidea, 253 ; defini- 

 tion, 312 



Nephropsis, 270, 312 



Neptunus, 269 



Nereicola, 103 



Nereicolidae, 103 



Nerocila, 206, 220 



Nervous system, 16 ; of 

 Ampliipoda, 236 ; of 

 Branchiopoda, 44 ; of 

 Branchiura, 98 ; of Cirri- 

 pedia, 117; ofCopepoda, 

 83 ; of Cumacea, 187 ; 

 of Decapoda, 286 ; of 

 Euphausiacea, 247 ; of 

 Isopoda, 210 ; of Lepto- 

 straca, 158 ; of Mysi- 

 dacea, 178; ofOstracoda, 

 65 ; of Tanaidacea, 193 



Nettovich, 98 



Xicothoe, 103 



Nicothoidae, 103 



Nika, 311 



Mphargus, 239, 241 



Nordmann, von, 72 



Norman, 56, 68, 107, 181, 



183 

 Notodelphys, 89, 103 

 Notophryxus, 221 

 Notopterophorus, 75, 103 

 Notostraca, 1, 29, 37, 48 ; 



definition, 53 

 Nucleus of Sacculina, 136 

 Nussbaum, 116 

 Nyctiphanes, 251, 252 



Octomeris, 111, 140 



Ocular peduncles, 9 ; of 

 Branchiopoda, 46 ; of 

 Decapoda, 263 ; of Iso- 

 poda, 211 ; of Lepto- 

 straca, 158 ; of Mysi- 

 dacea, 172; of Stomato- 

 poda, 325 ; of Syncarida, 

 166 ; of Tanaidacea, 191 



Ocypoda, 263, 264, 305, 

 307, 315 



Ocypodidae, 315 



Ocypodinae, 315 



Oediceros, 241 



Oedicerotidae, 226, 236, 

 241 



Oithona, 103 



Oken, 72, 107 



Olfactory filaments, 20 ; of 

 Copepoda, 85 



Omniatidia, 18 



Onaiea, 103 



Oncaeidae, 83, 103 



Oniscidae, 210, 220 



Ouiscinae, 220 



Oniscoidea, 196 ; definition, 

 220 



Oniscus, 3, 213, 220 



Onychopoda, 29 ; defini- 

 tion, 54 



Oostegites, 146; of Amphi- 

 I)oda, 232 ; of Cumacea, 

 186 ; of Isopoda, 203 ; 

 of Mysidacea, 176 ; of 

 Tanaidacea, 191 



Oostegopod, 41 



Operculata, 106, 110 ; de- 

 finition, 140 



Operculum of Cirripedia, 

 110 



Orbit of Decapoda, 257 



Orchestia, 237, 241 



Orchestiidae, 241 



OritJn/a, 314 



Orithyiiiae, 314 



Ortmann, 181, 254, 309 



Ostracoda, 1 ; afiinities and 

 classification, 68 ; defini- 

 tion, 56 ; development, 

 67 ; habits, etc., 67 ; 



historical, 56 ; mor- 

 phology, 56 ; palaeon- 

 tology, 68 



Otocyst, 19 (see Statocyst) 



Otolith, 19 



Oviduct, 21 



Oxycephalidae, 237, 241 



Oxycephalus, 241 



Oxyrhyncha, 253 ; defini- 

 tion, 315 



Oxystomata, 253 ; defini- 

 tion, 314 



OxyurojMda, 218 



Oziinae, 315 



Ozius, 315 



Packard, 151, 162, 167 

 Paguridae, 259, 277, 283, 

 285, 289, 304, 313 



Paguridea, 253 ; definition, 

 313 



Pagurinae, 313 



Paguristcs, 282, 283 



Pagjirus, 313 

 Palaega, 218 



Palaeinachus, 308 



Palaemon, 278, 311 



Pa/aemotietes, 266, 298, 

 311 



Palaemonidae, 304. 311 



Palaemoninae, 311 



Palaeocaris, 168 



Palaeocorystes, 218 



Palo.eogammarus, 239 



Palaeontology of Amphi- 

 poda, 239 ; of Branchio- 

 poda, 50 ; of Cirripedia, 

 138 ; of Decapoda, 306 ; 

 of Isopoda, 218 ; of Lep- 

 tostraca, 159 ; of Mysi- 

 dacea, 180 ; of Ostra- 

 coda, 68 ; of Stomato- 

 poda, 330 ; of Syncarida, 

 167 



Palate of Brachyura, 257 



Palicidae, 315 



Paliciis, 315 



Palinura, 253 ; definition, 

 312 



PcdinnreUus, 312 



Palinuridae, 266, 305, 312 



PaUmmis, 285, 300, 301, 

 312 



Palp, 9 



Pancreatic glands of Cirri- 

 pedia, 115 



Pandalidae, 288, 311 



Pandalina, 277, 311 



Pandalinae, 311 



Pandalus, 267, 277, 287, 

 311 



