INDEX 



20 1 



Parasitism, bee parasites, 146; effects of, 



1 86; sacculina, 183. 

 Parental care and length of life, 20. 

 Parental modifications, inheritance of, 67, 



68, 175. 



Parker, T. J., PI. 44. 

 Parnassius apollo, PL 71. 

 Parrot, protective color, 119. 

 Partridge berry, 156, PI, 88. 

 Peacock, sexual coloration, 150. 

 Peckham, G. \V. and E. G., spiders, sexual 



selection and sexual divergence, 55, PI. 



28, PI. 64; wasps, breeding habits, 77; 



wasps, color sense, 161. 

 Pelagic animals, transparent, 117. 

 Pelvis, man and apes, 164, PI. 97. 

 Perhybris pyrrha, PI. 77. 

 Permian fossils, 106. 

 Phanerogamia, 92. 

 Pheasant, Argus, 150, PI. 24; protective 



color, 1 1 8. 



"Pheasants" (Tegetmeier), PL 24. 

 Phenacodus, 109, PI. 46. 

 Phidippus cardinally PL Sj. 

 Philemon plumegenis, PI. 80. 

 Philohela minor, PL jo. 

 Phlogcenas jobiensis, PL 2j. 

 Phoenicians, 175. 

 Pkoraspis, PL 73. 

 Phoroifcsinia smafgdaria, PI. jj. 

 Phv/liiirii Sicci folium, PL 62. 

 Phyllodes verhiiellis, PL Sj. 

 Physics and life processes, 188. 

 Physiological selection and segregation, 66, 



189. 



Phytolacca decatidra, PI. 86. 

 Pieridit, 132, PI. 59. 



Pieris brassica, PL 56; rapce, color adap- 

 tation in pupre, 121, PL 59. 

 Pigeon, Phloganas, PL 25 ; rock, 31, PL 20; 



varieties of domestic, 30, PL 20. 

 Pika, protective color, PL 54. 

 Pine, 153, PL 87. 

 Pi mis inops, PL 87. 

 "Plant Life" (Coulter), 190, 191. 

 Plasticity, 27, 28; of man, hinders evolution, 



177. 



" Play of Animals, The" (Groos), 54. 

 Plica semilunaris, see Nictitating membrane. 

 Pliocercus elapsides and eiiryzonus, PL 79. 

 Pliohippus, PL 47. 

 Plover, ring-necked, PL 82. 

 Polar-bear, aggressive color, 126. 

 Polish fowl, skull, jo. 



Polistes, breeding habits, 77. 



Pollen, food of insects, 154; masses of or- 

 chid, 156, PL Sg; slow to sprout on 

 stigma of same plant, 155; tube, fj2, 



153, I5 6 - 

 Pomatomus saliatrix, PL 48. 



Ponipilns atrox, PI. 74. 



Pond snail, development, 97. 



Porgy, change of color in grass, 121, PI. jS. 



Potato beetle, 131, PL 69. 



Poulton, E. B., 1 1 6, 139, 190, PI. 59. 



"Poultry, New Book of" (Wright), 30, PI. 



1 6, PL 1 8. 



"Prehistoric Times" (Lubbock), 190. 

 Primates, 163, 164. 

 Primulacetz, 90. 

 Principle, general principles in operation 



of natural selection, 20. 

 Prionotus cristatus, PL 69. 

 Progress of human race, 173. 

 Protective coloration and resemblance, 116, 



117-125. 



Protohippus, PL 47. 

 Providence, Intro, ix. 

 PsenJacriFa l>oist/H' : alii, PL 77. 

 Psilura monacha, PL j6. 

 Psyche, tin i color, PL $b. 

 Ptarmigan, seasonal color change, 121, PL 



57- 



Pterodactylus spectabilis, PL 45. 

 Pttrogun proserpina, PL 70. 

 Pterophryne histrio, 124, 126, PL 65. 

 Public Opinion, a part of man's environment, 



172, 179. 

 Pupa, color adaptation, 121, PL S9 ' Logoa, 



1 23, PL 6j ; protective color, PL 56. 

 Putoriiis erinineiis, PL 67. 



Ouail, protective color, 1 1 8, PL 49. 



Rabbit, confusing coloration, 148; embryos, 

 PL jS : illustration of mutation, 19; 

 illustration of natural selection, 15; pro- 

 tective coloration not explicable by the 

 inheritance of effects of use and disuse, 

 75; signal, white rump patch, 146. 



Radiolaria, skeletons, PL 21. 



Recognition marks, 146-147. 



Regeneration and inheritance of parental 

 modification, 71. 



Relationship, key to classification, 91. 



"Relations concerning Ireland" (Giraldus), 



3- 

 Religion, a cause of segregation, 169. 



