---- _nireus_ 14 ---- _podalirius_ 43 _Paradisea Papuana_ 90 ---- _regia_ 90 ---- _speciosa_ 90 ---- _Wallacei_ 90 ---- _Wilsoni_ 90, 91 _Pavetta Borbonica_ 96 _Pecten_ 86 Pelargonium 96 Perch 88 Personal identity 10 _Physalia_ 63 ---- _caravilla_ 64 ---- _pelagica_ 64 ---- _utriculus_ 64 _Physophoridæ_ 63 Plaice 88 Plants and animals, origin of 36 ---- colour in 95 Pneumatophores 63 Portuguese Man o' War 63 Protective resemblance 3 _Protista_ 34 Protozoa 20 ---- colouration in 51, 56 Python 89 _Radiolaria_ 57 Rarity of uniform colour 28 Ray Lankester, Prof., on Ascidians 35 Red Admiral Butterfly 29 Repetition, effects of 8 Reptilia, colouration in 89 Resemblance, Protective 3 _Rhizophora filiformis_ 64 _Rhizopoda_ 56 Rhododendron 96 Ringlet Butterflies, eye-spots of 47 Roach 88 Romanes, Prof., cited 33, 34 _Satyrus hyperanthus_ 79 Scales of insects, structure of 72 Scarlet Tiger Moth 5 Sea anemones 52 ---- ---- colours of 67 Seasonal dimorphism 70