188 



INDEX 



Poison - eaters, see Pharmaco- 

 phagus Swallow-tails 



Polymorphism, in females of 

 mimicking species, 13; among 

 females of P. dardanus, 30 ; 

 among females of P. polytes, 75 



Population, conditions of equi- 

 librium in mixed, 93 



Poulton, 17 ; on N. American 

 mimetic butterflies, 45 ; on the 

 "Transparency group," 41 ; on 

 mimicry through agency of 

 migratory birds, 53 ; on Hypo- 

 limnas misippus, 66 note ; on 

 the relation between mimetic 

 forms of P. polytes, 90; on 

 predaceous insects, 105; on 

 relative proportion of different 

 forms of Pseudacraea eurytus, 

 127 ; on local variation in 

 D. chrysippus, 132 



Precis, 111, 122, 131; P. octavia, 

 seasonal dimorphism in, 131, 



VI. 11, 12 



Prioneris, 110; P. ska, 28 

 Pritchett, feeding experiments 



with lizards, 108 

 Protective resemblance, 8 

 Protogonius, as mimics of Itho- 

 miines, 38 ; as members of 

 mimicry rings, 134, 135, 138; 

 P. tithoreides, X. 9 

 Pseudacraea, 59, 144; P. bois- 

 duvali, 34, VI. 5; P. eurytus, 

 relative proportion of different 

 forms in, 127; polymorphism 

 of in relation to model, 149 

 note ; var. hobleyi as mimic of 

 Pla nema macarista, 35, 127, 



VII. 6, 7 ; var. terra, as mimic 

 of Planema tellus, 126, VII. 8; 

 var. obscura as mimic of Pla- 

 nema paragea, 126 



Ray, on adaptation, 4, 6 

 Rodents, bearing on mimicry of 

 recent genetic work with, 147 



Satyrinae, transparency in S. 



American, 42 

 Sceleporus floridanus, 108 

 Schaus, on birds as enemies of 



butterflies, 112 

 Seasonal dimorphism, 130 

 Seitz, 44, 52, 58 

 Shelford, 56 note 

 S. American butterflies, mimicry 



among, 38 

 Sports, as foundation of mimetic 



resemblances, 70, 91, 143 

 Sweet-peas, experiments on, 91 

 Swynnerton, on contents of 



stomachs of birds, 114 



Telipna sanguinea, 36 



Terias brigitta, 35; T. hecabe, 110 



Thyridia, 40, XIV. 3 



Tithorea pseudonyma, X. 10 



"Transparency group," in S. 



America, 39 

 Trimen, on mimicry in African 



butterflies, 13 

 Tupaia ferruginea, 121 



Variation, difficulty of initial, 

 63 



Wade, on relative abundance of 

 the three forms of P. polytes in 

 Ceylon, 99 



Wallace, on mimicry in Oriental 

 butterflies, 12; on the con- 

 ditions of mimicry, 50; on the 

 females of P. polytes, 76 ; on 

 initial variation, 64 



Warning colours, 10, 11 



Weismann, 1, 2 



CAMBRIDGE: PRINTED BY JOHN CLAY, M.A. AT THE UNIVERSITY PRESS 



