432 



ANALYTICAL INDEX 



suggested causes of ignorance of 

 joint essay (1858), 196; mutational 

 views of, 195 ; belief (1859) i n trans- 

 mutation rather than transition, 195, 

 200 ; influence of Origin on, 196, 

 200, 201 ; programme of training in 

 science (1856), 198 ; voyage of 

 Rattlesnake, 199 ; views of, on 

 evolution before Origin, 199, 200 ; 

 not essentially a naturalist, 200, 202 ; 

 approves system of W. S. Macleay, 

 200 ; on the basis of scientific con- 

 viction, 201, 202 ; opinions on Natural 

 Selection, 201, 202 ; with J. D. 

 Hooker in the Rhone valley, 202 ; 

 the champion of scientific freedom, 

 219; references to letters from C. 

 Darwin to, 78, 79, 80, 82, 91, 126, 196 ; 

 to C. Darwin from, 4, 196 ; to J. D. 

 Hooker from, 195 ; to C. Kingsley 

 from, TJ, 78 ; to C. Lyell from, 195, 

 200 ; to W. S. Macleay from, 200. 



Huxley's layer of hair, 198, 199. 



Hyas coarctata, 314. 



Hybernation, of African insects, 

 209 ; colour adjustment of Z. querci- 

 folia larvae determined before, 307. 



Hybernia leucophaearia, 156. 



Hybrids which do not follow Men- 

 delian principle abundant, xxxv, 

 xxxv n. I ; of Hieraciutn proved by 

 Mendel not to follow his principle, 

 xxxv n. 1 ; sterility of, 63, 64, jj, 78 ; 

 sterility of, due to Asyngamy,8o-4; of 

 Common and Chinese goose fertile, 

 83 ; of Ring Dove and domestic 

 pigeon fertile, 8^, 84 ; ' illegitimate ' 

 seedlings of heterostyled plant com- 

 pared with, 91. 



Hydrocorallina, affinity between 

 living and Palaeozoic, 28. 



Hydrozoa in classification, 25. 



Hyelosia as mimics of Ithomiinae, 

 264 ; method of attaining trans- 

 parency in, 266. 



Ay/as, Cephonodes, loss of scales 

 by, 365- 



Hylophila (Halias) prasinana, 1 49. 



Hymenoptera, the Instincts 

 of, V. 160-6: see also 118, 119, 

 146, 147. 



Hymenoptera (see also Ants, Bees, 

 Fossores, Humble-bees, Ichneumon- 

 ids, Saw-flies, Wasps, Xylocopidae ; 

 see also classification of examples 

 of mimicry, 389-93) : late evolution 

 of, 38 ; unique interest of the, 52 ; 



di- and polymorphism in, 72 ; tran- 

 sition in mode of defence of Phyto- 

 phagous larvae of, 319, 320; best 

 examples of instinct supplied by 

 Fossorial, 118, 119, 146, 147, 1 60-4 ; 

 W. S. Macleay and Kirby and Spence 

 on resemblance of Diptera to, 220, 

 221 ; mimicry of, by diurnal forms, 

 250 ; mimicry of, in various ways, 

 250-60; defence of, evident, 268; 

 uniformity in groups of, 278, 279 ; 

 many examples of mimicry of Bate- 

 sian, 376; also Miillerian, 231, 376; 

 Dipterous mimics of, probably not 

 aggressive, 378. 



Hymenopus bicornis, 378 n. 3. 



Hyolithes in Palaeozoic, 42. 



Hypanis (Byblia) acheloia 

 {gdtsius), 87, 341. 



Hyperechia, mimetic of Xylocopid 

 bee in Borneo and S. Africa, 276. 



Hypertely of Brunner von 

 Wattenwyl, X. 302, 303. 



Hypolimnas a genus mimetic of 

 Danainae, 216; ancestral pattern in 

 non-mimetic males of, 216; resem- 

 blance between non-mimetic males 

 of, 245 ; probably a distasteful genus, 

 and mimicry of Miillerian, 216, 217, 

 372 ; complex nature of mimicry of 

 Eupioea by, 241 ; mimetic species of 

 at once distinguished from models, 



35°- 



Hypolimnas {Eur aha) an the don, 



338 ; — bolina, 245, 372 ; — de.rithea, 

 216; — misippus, 215-18, 245, 247, 

 347, 355, 365 n. 1, 372, 381, 382 ; 

 — (Euralia) wahlbergz, 338. 



Hypotheses proposed as sub- 

 stitutes for Natural Selection 

 as the Explanation of Mimicry, 

 &c, VIII. 224, 225 : see also 271-2. 



Hypsidae (Pericopidae) as mimics 

 of Ithomiinae, 264 ; method of at- 

 taining transparency in, 266 ; African 

 Hypsid moth seized and rejected by 

 wild drongo, 284. 



I 



Ibis, vol. i, 195. 



Ichneumonids (in the broad sense): 

 see classification of the examples of 

 mimicry, 390, 392. 



'Identical ' twins, F. Galton on, 132, 

 x 34, x 35> J 38 n. ; of the same sex, 

 132; enclosed in same embryonic 

 membranes, 133 ; product of a single 



