ANALYTICAL hXDEX 



Selection, xviii ; on Oenothera 

 lamarckiana and Mutation, xix, xx, 4 ; 

 on intermittent periods of Mutation, 

 XX ; rediscovery of Mendel's principle 

 by, xxix; on minute variations in- 

 capable of permanently raising the 

 mean of the species, xxxix ; on 

 Mutation, no. 



dexithea, Hypolimnas, probably 

 ancestral, 216. 



Diabrotica, mimicked by Neobro' 

 ticay Lejna, and Dircema, 236, 237. 



Diaci'isia maculosa, 284. 



Diagnosis, Definition of 

 Species by, 1 1 . 65-8 ; see also sections 

 and sub-sections, 68-77. 



Diagnosis, Linnaean method of, 

 58, 60; conclusions of provisional, 

 65) 76, 'J^ ; transition and, 64, 66, 67, 

 inadequacy of, 90. 



Diagram I, illustrating Pangenesis, 

 126. 



Diagram II, illustrating Continuity 

 of Germ-plasm, 127, 128, 130-2. 



Diagram III, showing develop- 

 ment of 'identical' twins, 133, 134. 



DiAPOSEMATic Resemblance, 

 Reciprocal Warning Colours, 

 X. 344, 345. 



Diaposematic Resemblance, intro- 

 duction of term, 344 ; illustration 

 showing advantage of, 330, 331 ; 

 characteristic of Miillerian mimicry, 

 344 ; probable between PapUio 

 and Uraniid moth, 371. 



Dicranura bifida, 158, 159; — 

 vinula, 159. 



Dicrurics attacking Lepidoptera, 

 285, 287 ; unable to find Melafiitis, 

 288, 289. 



Dicrurus ater, 285. 



Dictionary of Philosophy 

 and Psychology, J. Mark Baldwin, 

 73 n. I, 142 n. 3, 143 n. 2, 312 n. 2, 

 360 n. I. 



Different Forms of Flowers, 

 Charles Darwin, xxvii. 



Different Models Mimicked 

 BY Male and Female, X. 372. 



Different methods of attaining 

 mimetic resemblance, 250-67, 280. 



Differentiating cell-divisions, 133, 



^35. 

 Digits, supernumerary, hereditary, 



135, 136, 180. 



Dimorphism, Diagnosis tra- 

 versed BY Seasonal, II. 72-4. 



417 



Dimorphism, uni(|ue forn^ of, in 

 larvae and pui)ac of /onosom.t 

 {Ep/iyra),\^o\ value of, 310; heredity 

 in, 310. 



DiMOKpiiisM and Polymorph- 



ism traverse I)!A(;N()SIs, II. 



70-2. 



Dimorphism and Polymorph- 

 ism in Procryptic Defence, X. 

 310. 



Dimorphism and Polymorph- 

 ism IN Mimicry, X. 354-6. 



Dimorphism and Polymorphism, 

 common in mimetic species, 354; 

 apparent strong support to Hatesian 

 mimicry of, 354 ; facts of, also con- 

 sistent with Miillerian interpretation, 

 354j.355) 356; advantages of, in 

 mimicry, 372 ; examples of. 372-5. 



Dimorphism and trimorphism in 

 both model and mimic, 355, 364, 365 

 n. I. 



Dimorphism, Seasonal in 

 Procryptic Defence, X. 310-12. 



Dimorphism seasonal in butterflies, 

 206-11, 339-42. 



diocletianus { rJiadanianthus ), 

 Da?iisepa, mimicked by female f. of 

 E. halithersesy 373. 



Dipnoi, 26. 



Diptera (see also classification of 

 examples of mimicr>', 390-3) : minute 

 changes more evident in Lepidoptera 

 than, 52 ; W. S. Macleay on resem- 

 blance to Hymenoptera of, 220; 

 Kirby and Spence on mimicry of 

 bees by Volucclla, 221 ; preferred lo 

 butterflies by lizards, 286 ; wings of, 

 in nest of Microhierax, 291 ; pro- 

 bably not aggressive mimics of 

 Hymenoptera, 378 ; probably at- 

 tracted by flower-like lures of lizard, 



378. 

 Dircema mimicking Duibrotua^ 



237- 

 Directive Marks and 



Structures, X. 325, 326; Seasonal 

 Development of, X. 326. 



Directive marks and strut luics 

 evidence of value of, 210, 281, 282: 

 valueofmovemcntsto,2S2; frequently 

 injured as if by enemy, 2S1, 282: 

 difficulty in the classification of: 



may be aposcmes or ] •' - - 



(pseudaposemcs or pscu.L, . 



325, 325 n. I, 326 ; in hind wing of 

 ProtogoniuSy 35 1. 



POULTON 



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