488 
INDEX 
Oxyrkopus petolarius, 0. trigeminus, 
0. formosus, 72 
Owen, Professor, on more generalised 
structure of extinct animals, 164 
Pachyotris fakricii, 69 
Pachyrhynchi, weevils mimicked by 
Longicorns, 67 
Pfficiloderma terminale, 66 
Palaeolithic implements in North 
America, 441 
Paleotherium, 165 
Palm-trees, uses and products of, 250- 
253 
wine, 250 
Palms, 248 
height of, 248 
climbing, 249 
Paloplotherium, 164 
Pandanaceae, 255 
Papilio, black and red group imitated, 
60 
pale varieties of, in Moluccas 
and New Guinea, 384 
Papilio nireus, changes of colour of 
pupa of, 345 
Papilionidse and Nymphalidse, local 
resemblances of, 382 
Paridae, sexual colouring and nidifica- 
tion of, 126 
Parrots, 293 
red in Moluccas and New Guinea, 
389 
black in New Guinea and Mada- 
gascar, 389 
Passenger pigeon, cause of its great 
numbers, 25 
Passeres, 299 
Patent inventions, as illustrating 
classification, 162 
Pengelly, Mr., on glacial man, 442 
Phacellocera batesii, mimics one of 
the Anthribidae, 67 
Phaethornitliinse, 321 
Phalaropus fulicarius, 81, 132 
Phasmidee, imitate sticks and twigs, 46 
females resembling leaves, 79 
tropical forms of, 286-288 
Pheasants, brilliant plumage of, in cold 
countries, 342 
Pheidole, genus of ants, 281 
Philippine islands, metallic colours of 
butterflies of, 385 
Philippine islands, white-marked birds 
of, 388 
Phoenix sylvestris, 251 
Phyllium, wonderful protective colour 
and form of, 46 
Phyllostoma, 308 
Physalia, 136 
Picariae, 296 
Picidse, sexual colouring and nidifica- 
tion of, 125 
Pieridse and Lycsenidse, local resem- 
blances of, 382 
Pieris, females only imitating Heli- 
conidae, 79 
Pieris pyrrha, 80 
Pigeons, 295 
black in Australia and Mada- 
gascar, 389 
Pigs, white poisoned in Virginia, black 
not, 389 
on instincts of newly-born, 109 
Pipes from N. American mounds, 427 
Pipridse, sexual colouring and nidifica- 
tion of, 127 
Pittidae, 133 
Plantain, 254 
Plantain-eaters, 298 
Plants, protective coloration in, 396 
Platycerium, 253 
Pliocerus equalis, P. elapoides, P. 
euryzonus, 72 
Plumage of tropical birds, 300 
of humming-birds, 315 
Polarity, Forbes’ theory of, 13, 34 
Polyalthea, tree with flowers on trunk, 
244 
Polygonum bistorta, P. aviculare, 404 
Polyrachis, genus of ants, 279 
Ponera clavata, terrible sting of, 280 
Pontea rapee, changes of colour of 
chrysalis of, 345 
Population of species, law of, 23 
does not permanently increase, 24 
not determined by abundance of 
offspring, 24 
checks to, 24 
difference in the case of cats and 
rabbits explained, 26 
Portraits on sculptured pipes from 
mounds, 427 
Prevision, a case of, 86 
Primrose and cowslip, Darwin’s dis- 
coveries in, 464 
