INDEX. 



455 



Ophiothrix {? penUq-ihijllum), breeding, 



228 

 Opliryotroclia inierilis, breeding, 225 

 Orcynus thynnus, 276 

 Oscanius membranaceus, 211, 219 

 Ovaries of fisbes, tbe, 154 

 Oxidation of ammonia in sea water, 



304 



Palfemon serratus, breeding, 227 



— squilla, breeding, 227 

 Paliemonetes vulgaris, breeding, 227 

 Palinurus vulgaris, breeding, 227 

 Pandalus annulicornis, breeding, 227 

 in Colne, 274 



in Humber, 92 



— brevirostris, breeding, 227 

 Paracelsus parvus, 231 

 Paralichthys ohlongus, 244 

 Pectinaria, larva of, 234 

 Peridiniuni, 234 



Perigonimus repens, breeding, 223 

 Phialidium variabile, 216, 232, 233 

 Philine aperta, 211, 219 



— — breeding, 226 

 Phoronis hippocrepia, 219 

 Phoscolion strombi, 212 

 Phyllodoce, larvge of, 232 



— maculata, 218 



— — breeding, 225 

 Piebald plaice, 271 



Pilchard, hatching of larvae, 151 



— life history of, 148 



— young, 153 

 Pilidium, 234 



Pilumnus Jiirtellus, breeding, 228 

 Pipe-fishes, development of agg, 258 



— ovary of, 268 

 Pirimela denticulata, 222 

 Plagiostoma caudatum, 42 



— dioicutn, 42 



— elongatum, 42 



— Girardi, 43 



— Koreni, 43 



— pseudo-maculatum, 42 



— sagitta, 42 



— siphonophorum, 43 



— vittatum, 43 



Plaice, ciliation of scales, 194 



— destruction of small, 81, 402 



— dwarf variety, 194, 378 



— growth of, 273 



— life history of, 395 



— numbers landed at Grimsby, 400 



— ovary, 155 



— piebald, 271 



— reai'ing of, 207 



— size and maturity, 69, 164, 309, 377, 



431, 444 



— statistics, 124, 170, 289 



— - see also Pleuronectes platessa 

 Platydoris planata, 220 

 Pleuronectes borealis, 195 



— flesus, coloration of, 197 

 see also Flounder 



— limanda, 257 



— maculatus, 244 



— microcephalus, 64, 121, 161, 380 

 see also Merry sole and Lemon 



sole 



— platessa, 195, 257 



— pseudo -flesus, 195 



— — see also Plaice 

 Plumularia pinnata, breeding, 224 



— setacea, breeding, 224 

 Pluteus, 232, 234, 235 



Podoconjne [Dysmorpliosa) carnea, 214, 

 232, 234 



— breeding, 223 



Podon, 232, 234 



— breeding, 226 

 Poliopsis, 3 



Pollack, see Gadus pollachius 

 Polycera quadrilineata, breeding, 226 

 Poly cirrus aurantiacus, breeding, 225 

 Polydora, 218, 232 



— breeding, 225 



— larva of, 234, 235 

 Polygordius, larva of, 234 

 Polynoe, larva of, 235 

 Pontobdella, breeding, 225 

 Poor cod, size and maturity, 309 

 Porcellana longicornis, breeding, 228 



— platijclieles, breeding, 228 



— zooea of, 233 



Portunus arcuatus, breeding, 228 



— depurator, breeding, 228 



— holsatus, 178 



