INDEX. 



517 



N. 



Natica operculata, 360. 



— (Lunatia) alderi, 377. 



catena, 377. 



montacjui, 377. 



operculata, 378. 



sonlida, 376. 



Nematoscelis megalops, 191. 

 Nepthys cirrosa, 350. 



— Hombergii, 349. 



Nereidae of the French and English 

 coasts of the Channel, key, 

 357. 



Nereilepas fwata, 35 1 . 



Nereis cidtrifera, 352. 



— Dumtrilii, 351. 



— irrorata, 352. 



— pelagica, 351. 



Nerophis aeqiioreus, var. exilis, 2. 

 Nitzschia closterium. See Plankton 

 diatoms. 



— seriata. See Plankton diatoms. 

 Notophylluvi fol'ioHum, 349. 

 Nucula nitida, 361. 



— sulcata, 361. 



Nudibranchiata from the North Sea, 



227. 

 Nyctiphanes Coiichi, 191. 



0. 



Oculinidae, 13. 



Odontosyllis ctenostomata, 199. 



— (jibba, 199. 

 Onus biscayensis, 3. 



— sp. 3. 



P. 



Falliolum similis, 365. 



— vitreus, 366. 

 Pandalina hrevirostris, 410. 

 Pandalus leptocerus, 410. 



— propinquus, 410. 

 Pandora inaequivalvis, 371. 

 Paralepis sp., 2. 

 Paramblyops rostrata, 193. 

 Parantipathes larix, 10. 

 Paraphellia expansa, 210. 

 Parazoanthus dixoni, 213. 



PasipluCi princeps, 410. 



— sivado, 409. 

 Pecien 6rtt^t, 359, 364. 

 Pericliyncnes Komi, 411. 

 Perisiphonia pectinata, 28. 

 Phellia murocincta (Gosse), 47. 

 Phialidium, 24. 



Philocheras bispinosus, var. neglediis, 

 412. 



— echinulatas, 412. 

 Phycis blennioides, 2. 

 Phyllodoce lamelligera, 349. 



— maculata, 348. 



— Prtre««i", 349. 



Phyllodocidae found on the French and 

 English coasts of the Channel, 

 key to Genera and Species, 353. 



Phyllosoma, 413. 



Piono&ijllis divaricata, 198. 



— lamelligera, 198. 



Plaice from the Barents Sea, 74, 502. 

 Plankton and the Mackerel Fishery, 

 269. 



— distribution of species, 292. 



— diatoms, culture of, 423. 



— _ experiments Avith culture media, 



436. 



list of species, 425. 



methods employed, 423. 



mixed cultures, 457. 



notes on particular species, 460. 



Plesionika martia, 410. 

 Pleurobranchus sp., 387. 

 Pleuronectes limanda. See Dab. 



— platessa. See Plaice. 

 Plumularia elegantula, 32. 



— frutescens, 32. 



— setacea, 32. 

 Pohjbius Hensloici, 417. 

 Polychaeta of Torquay, 197. 

 Polycheles typhlops, 413. 

 Pomatoceros triqueter, rearing, 468. 

 Pontophilus norvegicus, 413. 



— spinosus, 413 

 Portunus holsatus, 416. 



— pusillus, 417. 



— tuberculatus, 417. 

 Processa canaliculata, 411. 

 Pseudomma affine, 193. 

 Pseudomurex richardi, 360, 384. 

 Pteridium Alleni, 4. 



