488 



INDEX 



Oxyrhopus petolarius, 0. trigeminus, 



0. formosus, 72 

 Owen, Professor, on more generalised 



structure of extinct animals, 164 



PACHTOTBIS fabricii, 69 

 Pachyrhynchi, weevils mimicked by 



Longicorns, 67 

 Paeciloderma 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 

 Papilionidae and Nymphalidae, local 



resemblances of, 382 

 Paridse, 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 



Patent inventions, as illustrating 



classification, 162 



Pengelly, Mr., on glacial man, 442 

 Phacellocera batesii, mimics one of 



the Anthribidre, 67 

 Phaethornithinas, 321 

 Phalaropus fulicarius, 81, 132 

 Phasmidse, 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 



Picidae, sexual colouring and nidifica- 

 tion of, 125 



Pieridee and Lycaenidae, 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 



Pipridae, sexual colouring and nidifica- 

 tion of, 127 



PittidsB, 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 rapse, 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 



