ANALYTICAL INDEX 



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- 

 tica, Lema, and Dircema, 236, 237. 



Diacrisia maculosa, 284. 



DIAGNOSIS, DEFINITION OF 

 SPECIES BY, II. 65-8; see also sections 

 and sub-sections, 68-77. 



Diagnosis, Linnaean method of, 

 58, 60; conclusions of provisional, 

 65, 76, 77 ; 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 Mullerian mimicry, 

 344 ; probable between Papilio 

 and Uraniid moth, 371. 



Dicranura bifida, 158, 159; 

 vinula, 159. 



Dicrurus attacking Lepidoptera, 

 285, 287 ; unable to find Melanitis, 

 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, 



135. 



Digits, supernumerary, hereditary, 

 135, 136, 1 80. 



DIMORPHISM, DIAGNOSIS TRA- 

 VERSED BY SEASONAL, II. 72-4. 



Dimorphism, unique form of, in 

 larvae and pupae of Zonosoma 

 (Ephyra),\$o; value of, 310; heredity 

 in, 310. 



DIMORPHISM AND POLYMORPH- 

 ISM TRAVERSE DIAGNOSIS, 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 Batesian 

 mimicry of, 354 ; facts of, also con- 

 sistent with Mullerian interpretation, 

 354, 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 ( rhadamanthus ), 

 Danisepa, mimicked by female f. of 

 E. halitherses, 373. 



Dipnoi, 26. 



Diptera (see also classification of 

 examples of mimicry, 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 Volucella, 221 ; preferred to 

 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 Diabrotica, 



237. 



DIRECTIVE MARKS AND 

 STRUCTURES, X. 32 5, 326; SEASONAL 

 DEVELOPMENT OF, X. 326. 



Directive marks and structures 

 evidence of value of, 210, 281, 282; 

 value of movements to, 282 ; frequently 

 injured as if by enemy, 281, 282 ; 

 difficulty in the classification of: 

 may be aposemes or pseudosemes 

 (pseudaposemes or pseudepisemes), 

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

 Protogonius, 351. 



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