Ocypoda cardimana, 348
Odostomia, 318; acicula, 319; warreni, 318
Œdemia fusca, 59, 533; nigra, 59, 533
Œdicnemus crepitans, 173, 270, 458; scolopax, 483
Opah at the Shetlands, 434
Ophideres, 553
Opisthobranchiata, 301
Oriolus galbula, 257, 402
Orkney, mainland, Birds seen in south-east, 54
Orthagoriscus mola, 483
Ossifraga gigantea, 418
Otis tarda, 456
Otocorys alpestris, 408
Otolithus æquidens, 288
Ouzel, Ring, in Derbyshire, 1; on the Rigi, 268
Owl, Barn, and Long-eared, nesting in Oxfordshire, 11; Little, in Flintshire?, 482, 556,—in Anglesea, 556,—introduced into various parts of the kingdom, 556
Oxfordshire, notes on ornithology of (1896-98), 11
Oxyuris curvula, 341; mastigodes, 341
Palæontology, position in Biology, 527
Pandion haliaëtus, 413
Panurus biarmicus, 358, 440, 422, 478
Pardalotus rubricatus, 419
Partnership, curious, of Hedge-Sparrow and Blackbird in a nest, 237
Partridge, chestnut-coloured, 14, 23, 25, 26, 101, 111
Partridges in Nottinghamshire, 521
Parus ater, 220, 268, 451; britannicus, 400; cæruleus, 205, 220, 401, 451; cristatus, 401; major, 19, 82, 143, 204, 219, 400, 423, 451; palustris, 205, 220, 401, 451; sylvaticus, 479
Passer domesticus, 56, 74, 144, 206, 222, 249, 404, 424, 452, 519; hispaniolensis, 453; montanus, 221, 404
Pastor roseus, 37, 407
Patella vulgata, 342
Pavia Zoological Meeting, 265
Pearl on Fresh-water Mussel, 343
Pectinibranchiata, 304
Penæus canaliculatus, 354; esculentus, 354
Penguins on an antarctic island, 527
Pentaroge marmorata, 354
Perdix cinerea, 455, 521, 534; montana, 111
Pernis apivorus, 412
Pestis bubonica, 357
Petromyzon branchialis, 241; marinus, 144
Phaëthon rubricauda, 260
Phalacrocoracidæ, mode of progression under water, 557
Phalacrocorax carbo, 57, 413, 455; graculus, 57, 413, 455, 557; stictocephalus, 419; varius, 417
Phalaropus hyperboreus, 211
Phaps chalcoptera, 355
Phasianus colchicus, 534
Pheasant, hybrid, 323
Philinidæ, 301
Philomycidæ, 289
Phylloscopus collybita, 219; rufus, 82, 143, 204, 399, 432, 450; sibilatrix, 204, 450; superciliosus, 144; trochilus, 204, 219, 258, 399, 432
Physa (Bulla), 299, 300, 301; fontinalis, 298, 299, 300; hypnorum, 299, 300, 320
Physidæ, 298
Pica rustica, 223, 407
Pieris brassicæ, 24
Pigeon, Wood, eating molluscs, 484
Pike and its prey, 282
Pilumnopeus serratifrons, 348, 349
Pipit, Water, in Sussex, 278
Pipits (Meadow, Tree, and Water) on the Rigi, 268, 269
Planaxis, 318
Planaxidæ, 318
Planaria variegata, 303
Planorbis, 295, 297; carinatus, 297; complanatus, 297; contortus, 297; spirorbis, 297
Platalea leucorodia, 323, 414
Platycephalus fuscus, 355
Plectrophenax nivalis, 56, 207, 238, 406
Plegadis falcinellus, 414
Pleuronectes platessa, 241
Pleurotomatidæ, 319
Plover, Great, habits of, 173, 270, 458; Golden, in Moy Estuary, 40, 144; Green, in unusual numbers, 187
Pochard, Red-crested, in Yorkshire, 483
Podiceps auritus, 64; cristatus, 423; fluviatilis, 64, 212, 456; nestor, 419
Pœcilopsaltria horizontalis, 549
