INDEX 



'Notes on Fertilisation of Or- 

 chids ', C. Darwin, 229 n. 1. 



' Notes on the Geographical 

 Distribution and Dispersion 

 of Insects, &c.', R. Trimen, 

 246 n. 2. 



Novitates Zoologicae, 152 n. 1, 

 158, 178. 



'Oak Eggar 1 moth, 235 n. 1, 

 242, 242 n. 1. 



Ocellated spots on butterflies' 

 wings, Darwin and Trimen on, 

 230 n. 2, 231, 232, 233, 233 n. 2 

 andn. 3, 234. 



Octopus, Darwin on variable 

 protective resemblance of, 

 108, 109. 



Oecology and natural selection, 

 xiii, 143. 



01iver,D., on tendrils, 74; present 

 at reading of joint essay, 13. 



Omphalos, P. Gosse, 9-12. 



'On some remarkable Mimetic 

 Analogies among African 

 Butterflies ', R. Trimen, 236. 



' On the Geographical relations 

 of the chief Coleopterous 

 Faunae ', A Murray, 246 n. 2. 



' On the Phenomena of Varia- 

 tion and Geographical Dis- 

 tribution as illustrated by the 

 Papilionidce of the Malayan 

 Region ', A. R. Wallace, 236. 



On Variation, Bateson, 274. 



Ophideres fullonica, piercing 

 oranges, 224 n. 1. 



Orange River, 96. 



oranges pierced by moth, 224 n. 1. 



orchids, Darwin and Trimen on 

 fertilization and structure of, 

 217-29, 232. 



Oregon, 192-4. 



organic selection, 3, 48. 



Oriental Region, butterfly 

 models and mimicry in, 

 152-3, 156, 160-1, 177, 179-80. 



Origin, C. Darwin, v, ix, xiv, 2, 

 et passim ; Owen criticized in 

 the, 28 ; effect of the, 51-6 ; 

 adaptation and the, 99 n. 1 ; 



Paley quoted in the, 100; 

 ' individual differences ' the 

 steps of evolution in the, 272 

 n. 1, transmission of acquired 

 characters considered in the, 

 273. 



Omithoptera, 179. 



Ornithoptera croesus, sexes of, 

 233 n. 1. 



Ornithorhynchus, 47. 



Orthoptera, as mimics, 116. 



oryzivorus, Dolichonyx, 142. 



Osborn, H. F., American Palae- 

 ontology and, 2 ; on organic 

 selection, 3, 48 ; on Erasmus 

 Darwin and Lamarck, 3-4 ; on 

 In Memoriam, 8. 



Owen, Sir Richard, 15 ; Darwin 

 and, 26-30, 28 n. 2, 230. 



Oxalis, Darwin and R. Trimen 

 on, 217, 223-4, 226-7, 229. 



Oxford, Buckland, Lyell, Darwin 

 and, 6-7, 86-7; Brit. Ass. 

 Meeting (1860) at, 66-8 ; Dar- 

 win Centenary at, 78-83. 



Pacific States, 207-8. 



Palaearctic Region, mimicry in 

 W. section of, 150; in E. sec- 

 tion of, 151. 



palamedes, Pap., 183, 206. 



Paley, influence on natural his- 

 tory of, 95-8, 100-1 ; quoted 

 in Origin, 100. 



Pall Mall Gazette, 68. 



pamphilus, Coenonympha, 231-2. 



Pangenesis, 33-4, 38-9, 38 n. 1. 



l Pai)ilio* or 'Fluted Swallow- 

 tails ', one of the three sections 

 ofPapilionidae, 137, 177-8, 206; 

 'Anchisiades ', ' glaucm ', ' ma- 

 chaon', and 'troilus' groups of, 

 182-3 ; as mimics ofPharmaco- 

 phagus, 137, 177-91, 206-7 ; of 

 Pharm. philenor in N. America, 

 181-91, 206-7 ; of Danainae, 

 &c., 137, 179 ; secondary mimi- 

 cry between, mimetic, 182-3, 

 207 ; females of, especially mi- 

 metic, 132, 137, 139, 179, 182- 

 5, 206, 236-7, 278; Oriental 



