Contributions to the Theory of Natural Selection

P. pandion, 152 (#x4_x_4_i49), 180 (#x5_x_5_i0);

P. paradoxa, 87 (#x3_x_3_i29), 179 (#x5_x_5_i32);

P. peranthus, 160 (#x4_x_4_i57), 171 (#x5_x_5_i15);

P. pertinax, 145 (#x4_x_4_i44);

P. philoxenus, 182 (#x5_x_5_i38);

P. polydorus, 88 (#x3_x_3_i30), 170 (#x5_x_5_i11), 182 (#x5_x_5_i38);

P. polytes, 147 (#x4_x_4_i46), 148 (#x4_x_4_i47);

P. rhesus, 171 (#x5_x_5_i15);

P. romulus, 87 (#x3_x_3_i29), 148 (#x4_x_4_i47), 150 (#x4_x_4_i48), 183 (#x5_x_5_i40);

P. sarpedon, 141 (#x4_x_4_i38), 158 (#x4_x_4_i53), 171 (#x5_x_5_i15);

P. sataspes, 171 (#x5_x_5_i15);

P. severus, 140 (#x4_x_4_i36), 144 (#x4_x_4_i43);

P. theseus, 87 (#x3_x_3_i29), 148 (#x4_x_4_i47), 150 (#x4_x_4_i48), 169 (#x5_x_5_i0), 170 (#x5_x_5_i11), 171 (#x5_x_5_i15), 180 (#x5_x_5_i0), 183 (#x5_x_5_i40);

P. thule, 179 (#x5_x_5_i32);

P. torquatus, 156 (#x4_x_4_i52);

P. turnus, 152 (#x4_x_4_i49);

P. ulysses, 140 (#x4_x_4_i36), 160 (#x4_x_4_i57), 173 (#x5_x_5_i23);

P. varuna, 88 (#x3_x_3_i30).

Papilionidæ, the question of their rank, 133 (#x4_x_4_i30);

peculiar characters possessed by, 134 (#x4_x_4_i32);

peculiarly diurnal, 136 (#x4_x_4_i33);

compared with groups of mammalia, 138 (#x4_x_4_i34);

distribution of, 140 (#x4_x_4_i36);

large forms of Celebes and Moluccas, 168 (#x5_x_5_i8);

large forms of Amboyna, 169 (#x5_x_5_i0);

local variation of form, 169 (#x5_x_5_i0);

arrangement of, 186 (#x5_pgepubid00058);

geographical distribution of, 189 (#x5_x_5_i81);

of Indo-Malay and Austro-Malay regions, 192 (#x5_x_5_i109);

of Java, Sumatra, and Borneo, 193 (#x6_x_6_i3).

Paridæ, sexual colouring and nidification of, 243 (#x7_x_7_i32).

Passenger pigeon, cause of its great numbers, 308 (#x9_x_9_i11).

Patent inventions, as illustrating classification, 295 (#x8_x_8_i39).

Phacellocera batesii, mimics one of the Anthribidæ, 94 (#x3_x_3_i37).

Phalaropus fulicarius, 115 (#x4_x_4_i5), 295 (#x8_x_8_i39).

Phasmidæ, imitate sticks and twigs, 64 (#x2_x_2_i68);

females resembling leaves, 112 (#x4_x_4_i2).

Phyllium, wonderful protective colour and form of, 64 (#x2_x_2_i68).

Physalia, 258 (#x7_x_7_i76).

Pieridæ, local modification of form in, 172 (#x5_x_5_i18).

Pieris, females only imitating Heliconidæ, 172 (#x5_x_5_i18).

Pieris coronis, 172 (#x5_x_5_i18);

eperia, 172 (#x5_x_5_i18).

Pieris pyrrha, 113 (#x4_x_4_i2).

Picidæ, sexual colouring and nidification of, 242 (#x7_x_7_i26).

Pipridæ, sexual colouring and nidification of, 245 (#x7_x_7_i45).

Pittidæ, 253 (#x7_pgepubid00085).

Pliocerus equalis, 101 (#x3_x_3_i49);

P. elapoides, P. euryzonus, 102 (#x3_x_3_i51).

Pæciloderma terminale, 93 (#x3_x_3_i36).