4i8 



ANALYTICAL IXDLX 



dirit'iiy Syniphaedrit, winj,' of, in nest 

 of Miiro/iitrax^ 29 1. 



Discina, persistence of, in time, 43. 



Discontinuity, dctinilion of con- 

 tinuity and, xiv ; the ori^jin of specific, 

 XV, xvi ; importance of geographical 

 distribution for the study of, xvi ; 

 judgement of subjective, xvii ; colour 

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



Discontinuous or Continuous 

 Evolution, Introd. xiv-xvi. 



Discriminating features even in 

 closest mimicr)-, 349, 350; possible 

 meaning of, 350. 35S. 



DiscusBion on Acquired Char- 

 acters (1889), 164 n. I. 



Discussion on Si'ecies, In- 

 sects ESrECIALLV fitted FOR, II. 



50-4. 



Discussion on Species, Intro- 

 duction TO, II. 63-5. 



Disease, germs of, 120, 121 ; when 

 germ-caused, not hereditary, 136,184; 

 acquired, not hereditary, 136; blasto- 

 genic origin of certain, 136; non- 

 transmission of constitutional effects 

 of, 182-4. 



Dismorphia orise^ 240, 265, 266. 



Dismorphina {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. chrysippus in S. Africa, 71 n. i. 



Distasteful, see unpalatable. 



Disuse, apparent inherited effects 

 of, due to cessation of Natural Selec- 

 tion, 137, 138. 



Diverse Ways of production 

 OF Mimicry, &c., p.etwekn Insects 

 of various Orders, \'III. 250-61 ; 



BETWEEN iNSECrS OF THE SAME 



Order, \'I1I. 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. I ; support to Mullerian theory 



by, 213, 223, 328, 343-5; on l^eci- 

 procal Mimicry (Diaposematism), 

 213, 344, 345 ; memoirs in support of 

 Mullerian theory by, 213 n. 1 ; on 

 Mullerian mimicry in Pierinac, 262 ; 

 on homologous markings of the 

 Vatu'ssidae, 277 ; results obtained by, 

 quoted in Mssay 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 rien'/iac, 311, 312, 312 n. i ; 

 onepiganiic and aposemalic smell in 

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

 on Mimetic Attraction^ 328 n. i ; on 

 wet and dry forms of Byblia gotziiis 

 and B. i/ithyia, 34 1 ; on seasonal 

 forms of J'cracolus rcij;ina, 341 : on 

 Miillerian mimicr>' in its relationship 

 to the seasonal changes of PierinaCy 

 341, 342: on secondary Mullerian 

 mimic ry, 345 ; on combination of 

 procryptic and mimetic colouring in 

 Picrinae^ 350 ; general applicability 

 of Wallace's third condition to 

 Mifllerian mimicry controverted by, 

 362 ; on female mimicry Mullerian 

 no less than Batesian, 362 n. 2 ; on 

 the Papilio-Euterpe Mullerian asso- 

 ciation, 362 n. 2. 



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

 on habits of Jlyas coarctiddy 314, 

 314 n. I. 



Dog, origin of, S3, 83 n. 2; Prichard 

 on the production of breeds of by 

 selection, 186; Hlumenbach on mul- 

 tiple origin of, 188. 



Doleschallia, resemblance to dead 

 leaf of, 205. 



Doliops curculionoideSy 261 ; — i^eo- 

 vtctricay 26 1. 



Doliops {Lamiidac) 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 artiflcial 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. 



