INDEX 



209 



Oriole, mimicry, 144, PL 80; sexual 



coloration, 150. 

 Oriolus decipiens, PI. 80. 

 Ornithopiera (Papilio) priamus, 150, PL 84. 

 Orohippus, PI. 47. 

 Osborn, H. F., 27, 190, 192. 

 Ostracoda, 184. 

 Otaria, PI. 36. 



Outdoor life and sexual selection, 181. 

 Owl, nictitating membrane, PL 36; snowy, 



126. 

 Oxyrrhopus trigeminus, PL 79. 



Pachyrhynchus, PL 73. 



Packard, A. S., PI. 55, PI. 56, PI. 78. 



Paleontology, 87, 103-111. 



Palms, fertilization, 153. 



Paludestrina protea, PI. 3. 



Paludina, fossil shells, 107, 108, 189, 191. 



Panolis piniperda, PI. 56. 



Panthia ccenobita, PL 55. 



Papilio echerioides, PL 76; machaon, PL 



71; merope, PL 76; mimicry, 138; 



priamus, PL 84; ridleyanus, PL 77. 

 Papilionidce, 132, PL 76. 

 Paradise, bird of, sexual coloration, 150. 

 Paraguay, segregation of wild horses, 65. 

 Paralichthys dentata, PL 48. 

 Parasitism, bee parasites, 146; effects of, 



186; 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, PL 88. 

 Peacock, sexual coloration, 150. 

 Peckham, G. W. and E. G., spiders, sexual 



selection and sexual divergence, 55, 



PL 28, PL 64; wasps, breeding habits, 



77; wasps, color sense, 161, PL 85. 

 Pelagic animals, transparent, 117. 

 Pelvis, man and apes, 164, PL 91. 

 Perhybris pyrrha, PL 77. 

 Permian fossils, 106. 

 Phanerogamia, 92. 

 Pheasant, Argus, 150, PL 24; protective 



color, 118. 



"Pheasants" (Tegetmeier), PL 24. 

 Phenacodus, 109, PL 46. 

 Phidippus cardinalis, PI. 8$. 

 Philemon plumegenis, PL 80 

 Philohela minor, PL 50. 

 P 



Phlogcenas jobiensis, PL 2$. 



Phoenicians, 175. 



Phoraspis, PL 73. 



Phorodesmia smargdaria, PL 55. 



Phy ilium sicci folium, PL 62. 



Phyllodes verhuellis, PL 83. 



Physics and life processes, 188. 



Physiological selection and segregation, 66, 

 197. 



Phytolacca decandra, PL 86. 



Pieridce, 132, PL 59. 



Pieris brassica, PL 56; rapce, color adap- 

 tation in pupae, 121, PL 59. 



Pigeon, Phlogcenas, PI. 25; rock, 31, PL 20; 

 varieties of domestic, 30, PL 20. 



Pika, protective color, PL 54. 



Pine, 153, PL 87. 



Pinus mops, PL 87. 



"Plant Life" (Coulter), 198, 199. 



Plasticity, 27, 28, 192; of man, hinders 

 evolution, 177. 



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



Plica semilunaris, see Nictitating membrane. 



Pliocercus elapsides and euryzonus, PL 79. 



Pliohippus, PL 47. 



Plover, ring-necked, PL 82. 



Polar-bear, aggressive color, 126. 



Polish fowl, skull, 30. 



Polistes, breeding habits, 77. 



Pollen, food of insects, 154; masses of 

 orchid, 156, PL 89; slow to sprout on 

 stigma of same plant, 155; tube, 152, 



i53 i5 6 - 



Pomatomus saltatrix, PL 48. 

 Pompilus atrox, PL 74. 

 Pond snail, development, 97. 

 Porgy, change of color in grass, 121, PL 58. 

 Potato beetle, 131, PL 69. 

 Poulton, E. B., Preface to 2d Ed., x, Intro. 



xi, 116, 139, 198, PL 59, PL 75. 

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



PL 16, PL 18. 



"Prehistoric Times" (Lubbock), 198. 

 Primates, 163, 164. 

 Primulacea, 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. 



Protohipptis, PL 47. 

 Providence, Intro, ix. 

 Pseudacrcea boisduvalii, PL 77. 



