4i8 



ANALYTICAL INDEX 



dirtea, Symphaedra, wing of, in nest 

 of MicroJuerax, 291. 



Discina, persistence of, in time, 43. 



Discontinuity, definition of con- 

 tinuity and, xiv ; the origin of specific, 

 xv, xvi ; importance of geographical 

 distribution for the study of, xvi ; 

 judgement of subjective, xvii ; colour 

 and, xvii ; as a test of species, 66, 67. 



Discontinuous or Continuous 

 Evolution, Introd. xiv-xvi. 



Discriminating features even in 

 closest mimicry, 349, 350 ; possible 

 meaning of, 350, 358. 



Discussion on Acquired Char- 

 acters (1889), 164 n. 1. 



Discussion on Species, In- 

 sects ESPECIALLY FITTED FOR, II. 

 50-4. 



Discussion on Species, Intro- 

 duction to, II. 63-5. 



Disease, germs of, 120, 121 ; when 

 germ-caused, not hereditary, 1 36, 1 84 ; 

 acquired, not hereditary, 136; blasto- 

 genic origin of certain, 136; non- 

 transmission of constitutional effects 

 of, 182-4. 



Dismorphia orise, 240, 265, 266. 



Dis?norphina {Pierinae), mimicry 

 of Ithomiinae by, 239, 240, 265, 266 ; 

 retention of old Pierine character by 

 males of, 239, 240 ; sexual brands of 

 males of, 240 ; T. Belt on epigamic 

 use of white patches in males of, 240. 



Distance, importance of, in mode 

 of defence, 319 ; effect of, on apparent 

 size, 366. 



Distant, W. L., on dorippus f. of 

 L. chrysippas in S. Africa, 71 n. 1. 



Distasteful, see unpalatable. 



Disuse, apparent inherited effects 

 of, due to cessation of Natural Selec- 

 tion, 137, 138. 



Diverse Ways of production 

 of Mimicry, &c, between Insects 

 of various Orders, VIII. 250-61 ; 

 between Insects of the same 

 Order, VIII. 261-7 : see also 280. 



Diurnal models mimicked by 

 diurnal members, even of nocturnal 

 groups, 249, 250 ; moths mimicking 

 butterflies, 249, 250, 275, 276, 372, 

 376 ; hours of procryptic defence, 303. 



Dixey, Dr. F. A., on mutation and 

 continuous evolution, xxxviii, xxxix; 

 on species, 56 ; on word ' species ', 

 62 n. 1 ; support to Mullerian theory 



by, 213, 223, 328, 343-5 ; on Reci- 

 procal Mimicry (Diaposematism), 

 213, 344, 345 ; memoirs in support of 

 Mullerian theory by, 213 n. 1 ; on 

 Mullerian mimicry in Pierinae, 262 ; 

 on homologous markings of the 

 Vanessidae, 277 ; results obtained by, 

 quoted in Essay X, 293 : see also 

 viii ; on choice of resting-sites by 

 butterflies, 301, 301 n. 6 ; on Melan- 

 ism, 310 n. 1 ; on seasonal changes 

 in the Pierinae, 311, 312, 312 n. 1 ; 

 on epigamic and aposematic smell in 

 African butterflies, 316, 317, 317 n. I ; 

 on Mimetic Attraction, 328 n. I ; on 

 wet and dry forms of Byblia gotzius 

 and B. ilithyia, 34 1 ; on seasonal 

 forms of Teracolus regina, 341 ; on 

 Mullerian mimicry in its relationship 

 to the seasonal changes of Pierinae, 

 341, 342; on secondary Mullerian 

 mimicry, 345 ; on combination of 

 procryptic and mimetic colouring in 

 Pierinae, 350 ; general applicability 

 of Wallace's third condition to 

 Mullerian mimicry controverted by, 

 362 ; on female mimicry Mullerian 

 no less than Batesian, 362 n. 2 ; on 

 the Papilio-Etiterpe Mullerian asso- 

 ciation, 362 n. 2. 



Dixon, Professor A. F., and G. Y., 

 on habits of Hyas coarctata, 314, 

 314 m 1. 



Dog, origin of, 83, 83 n. 2; Prichard 

 on the production of breeds of by 

 selection, 186; Blumenbach on mul- 

 tiple origin of, 188. 



Doleschallia, resemblance to dead 

 leaf of, 205. 



Doliops curculionoides, 261 ; — geo- 

 metrica, 26 1. 



Doliops (Lamiidae) mimicking 

 weevils, 250, 261. 



Domestic races, probable immense 

 importance of Mendelism in, xxxv ; 

 widely different, 76 ; Darwin's view 

 of two or three species combined in, 

 79 ; artificial selection and, 83 n. 2 ; 

 suggested origin from two or more 

 wild species, 83-4 ; recognition by 

 J. C. Prichard that artificial selection 

 has produced, 174, 186; fertility 

 between, 201 : see also 77-80. 



Domestication, reduction of sterility 



by, 79, 83, 83 n. 2. 



Dominant and recessive characters, 

 xxx-xxxiii. 



