ANALYTICAL INDEX 



45 



On the Law which has regu- 

 lated the Introduction of New 

 Series, A. R. Wallace, 194. 



On the Reception of the Origin 

 of Species, T. H. Huxley, 196. 



On the Secular Cooling of the 

 Earth, Lord Kelvin, 4 n. 3. 



On the Tendency of Varieties 

 to depart indefinitely from the 

 Original Type, A. R. Wallace, 194. 



On the Variations of the 

 Evening Primrose, G. A. 

 Boulenger, F.R.S., xix n. 5 : see also 

 xxi. 



On Variation, see Materials for 

 the Study of Variation, W. 

 Bateson. 



Open country in S. Africa, defini- 

 tion of, 340. 



Ophiuroids in early Palaeozoic, 30. 



Orchidaceae, self-fertilization of 

 many, 92. 



Orchis Bee, self-fertilization of, 64, 



Orders of insects, mimicry between 

 different, 229-31, 250 61. 



Organs, origin of, ic8, 109. 



Oriental and other Lepido- 

 PTERA Illustrating Mimicry, 

 X. 370-6. 



Oriental Region : see also Anda- 

 man, 373, 373 n. 2 ; Borneo, 257 n. i 

 275, 276, 348, 349, 353, 367 n. 2 

 369 ; Burma, 286-92, 373 ; Bombay 

 70 n. 2 ; Canara, 70 n. 2 ; Ceylon 

 70-1,285,286,349; China, S., 88, 333 

 Deccan, 70 n. 2 ; Hambantotte 

 7on. 2 ; Hong-Kong, d>Z; India, 70 

 70 n. 2, 269, 317, 324, 341, 342 

 349, 363, 371-3, 37^ \ Irrawaddy 

 291 n. I ; Kala Pani, 285 ; Kandy 

 285 ; Karachi 70, 70 n. 2 ; Khan 

 dalla, 70 n. 2 ; Macao, 88 ; Mala 

 bar, 178, 187 ; Malaya, 248, 252 

 333, 367 ; Mandalay, 291 n. i 

 Mogok, 291 n. I ; Moulmein, 289 

 North Kanara, 341 ; Pahpoon, 290 

 Poona, 70 n. 2 ; Puttalam, 70 n. 2 

 Sahveen, 289; Siam, 303, 341 

 Sikkim, 373 ; Singapore, 368 ; Sinza- 

 way, 290 ; Taungyah, 287 ; Tenas- 

 serim, 290, 291, 291 n. i ; Tha- 

 beitkyin, 291 n. i ; Thundiani, 285 ; 

 Trincomalie, 70 n. 2 ; Wabosakhan, 

 288 ; Yoonzaleen, 290. 



— The study of mimicry in relation 

 to, xxvi ; fading in the pigments of 



certain museum specimens of Lepi- 

 doptera from, xlv ; A. R. Wallace on 

 mimicry in the, 222 ; F. Moore on 

 mimicry in the, 223 ; uniformity in 

 Euploeuii of, 277, 333, 334 ; ' leaf- 

 butterflies ' {Kallima) of, 203-8, 302, 

 310; Eiip/oeifii r\t2iT\y restricted to 

 Australian and, 333 ; Precis, seasonal 

 forms of ahiiana of 340, 341 ; 

 mimicry in the Elyniniinae of, 353 ; 

 L. chrysipf)us in, 70, 364 ; mimetic 

 chafer of, 368 ; blue Euploeas of the, 

 roughly mimicked by diurnal Chal- 

 cosiine moths, 372, 376 ; examples of 

 mimicry chiefly selected from Lcpi- 

 doptera of, 370-6 ; localities of 

 A. cama in 382. 



Origin of Species, Charles 

 Uarwin, xv, xviii, xix, xxii, xxvi, 5, 

 21, 25, 46, 47, 48, 57, 58, 63, 67, 84, 

 91, 94, 139, 162, 165, 175, 175 n. I, 

 196, 199, 200, 201, 219, 233 n. I, 

 361, 379; arguments for pre- 

 Cambrian time in, 5 ; definition of 

 species in, 46, 47 ; penetration of 

 ideas of, 48 ; influence on Huxley of, 

 200-1 ; twofold aim of, 200, 201. 



Origin of the Fittest, Professor 

 E. D. Cope, 109. 



Origin of Pupal (;roove in 

 PiERiNAE, &c., V. 147-50. 



Origin of specific discontinuity, xv, 

 xvi ; importance of geographical 

 distribution for the study of, xvi ; 

 of organs and limbs, 108, 109; of 

 Miillerian mimicry from warning 

 colours, 329-31, 349 ; of mimicr>', 

 examples bearing on, 376. 



Orioles, mimicry of powerful birds 

 by, 367. 



orise^ Dismorphia, perfect mimicry 

 of Ithoiniinae by, 240, 265, 266 ; me- 

 thod of attaining transparency by, 

 266 ; Ecuador form of model and 

 mimic, 265, 266. 



orithyia^Jtmofiia {Precis), wing of, 

 in nest o{ Microliicrax, 291. 



Ornithorhynchus. Song of the, 

 W. J. Courthope, 103, 104. 



Orthogenesis der Schmetter- 

 linge, G. H. Kimcr, 224. 



Orthoptera (see also Acridiidac^ 

 Blattidac, Locust idae, Af,intid(ie, 

 Phasmidac) : of Commentry Car- 

 boniferous, 35-7 ; great age of, 52; 

 mimicking ants, 256, 257, 257 n. I, 

 258 (Fig. 5), 280; mimicry of leaf- 



