2O4 



INDEX 



Danaida, 132, 138, PL 76, PL 84. 

 Danais archippus, 138, PL 76; chrysippus, 



PI. 76. 

 Darwin, Charles, 47, 48, 52, 197, PL 32, 



PI- 34, PL 95- 

 "Darwin and After Darwin" (Romanes), 



105, 197, 199, PL 17, PL 36, PL 37, PL 44, 



PL 75, Pis. 93-^97, PI 99. 

 "Darwiniana" (Huxley), 198. 

 "Darwinism" (Wallace), 35, 132, 144, 



197, 199. 



Dasychira pudibunda, PL 55. 

 Datana ministra, PL 75. 

 Dean, Forest of, segregation of deer in, 



65- 



Death, at close of reproductive period, 20, 

 22, 23, 24; bagworm moth, 21; capital 

 punishment, 25; causes, 14; drone 

 bees and young queen bees, 22, 23; 

 of individual for general welfare, 20-25 > 

 rate, 12. 



Decapoda, development of, 98, Pis. 39-41. 



Decoy, male birds serve as, 50. 



Deer, antlers, 106, 107, PL 43; protective 

 color, 120; secondary sexual charac- 

 ters, 53; segregation, 65; signals, 146. 



Degeneration, 183-187. 



Delage, Yves, PL 101, 185. 



"Descent of Man" (Darwin), 52, 197. 



Deterioration due to escape from struggle 

 for existence, 170; due to parasitism, 

 184 et seq. 



Devonian fossils, 106. 



De Vries, Hugo mutation, 18, 19, 39, 

 189, 190. 



Dianthcecia compta, PL 55. 



Diapheromera jemorata, PL 61, 



Diatoms, skeletons of, 32, PL 21. 



Dimorphism, in flowers of Mitchella, 156, 

 PL 88; sexual, see Sexual selection. 



Discontinuous variation, 19. 



Disease, 169, 171. 



Dismal Swamp fish, 95. 



Dismorphia astynome, PL 77. 



Dissosteira Carolina, PL 83. 



Distribution, geographical, 87, 111-116. 



Divergence, degree of, in variation, 9; 

 from species type, an advantage in 

 struggle for existence, 26; in relation 

 to mendelian phenomena, 46; sexual, 

 see Sexual selection ; swamped by cross- 

 breeding, 41. 



Dog, mating, 48 ; skeleton of fore limb, 92. 



Dolichonyx oryzivorus, PL 22. 



Doliops sp. and D. curculionides, PL 73. 

 Doryphora decemlineata, PL 69. 

 Dragon-fly, PL 31, PL 33. 

 Drone-fly, imitates bee, 136, PL 74. 

 Drouth as cause of segregation, 43. 

 Dugmore, A. R., PL 48, PL 50, PL 58. 

 Dugong, nictitating membrane, PL 36. 

 Dynastes hercules, 51, PL 30. 



Eagle nictitating membrane, PL 36. 



Ear, change of function, 39 ; man and apes, 

 165, Pis. 94-96; vestigial muscles of 

 human, 94, 95. 



Education (plasticity), 27, 192; suscepti- 

 bility to, hinders Evolution, 177. 



Egypt, 175- 



Elaps, 142, PL 79. 



Elephant hawk moth, 139, 140, PL 78. 



Elk correlation between antlers and 



ligamentum nucha, 35. 

 Elymnias phegea, PL 77. 

 Embryology, comparative, 87, 96-103; 



of higher Crustacea, 89, Pis. 39-41 ; of 



man, 166, PL 98; of vertebrates, 97, 



PL 38, PL 98. 

 Emydia jacobece, PL 70. 

 Environment, and nature of organism, 188 ; 



change in makes evolution rapid, 26; 



inheritance of direct effects of, 72; 



nature of man's, 172. 

 Epeira prompta and stellata, PL 64. 

 Epilobium hirsutum, 139. 

 Epipactys latijolia, PL 89. 

 Equus, PL 47. 



Eriopus purpureofasciata, PL 55. 

 Eristalis tenax, PL 74- 

 Errera, PL 4, a. 

 Erythrolamprus esculapii and venustissi- 



mus, PL 79. 



"Essays upon Heredity and Kindred Bio- 

 logical Problems" (Weismann), 197, 



199. 



Euckistus servus, PL 69. 

 Euplcea midamus, 138, 150, PL 84. 

 Evermann, Barton G., PL 48, PL 58. 

 "Evolution and Adaptation" (Morgan), 



198. 



"Evolution and Ethics" (Huxley), 198. 

 "Evolution and its Relation to Religious 



Thought" (Le Conte), 198. 

 "Evolution, The Factors of Organic" 



(Cope), 198. 

 "Evolution, The Method of" (Conn), 192, 



198. 



