454 



ANALYTICAL INDEX 



carrying ants by, 260 ; procryptic 

 resemblance to leaf of Pterochroza, 

 a genus of, 302 ; value of bright hind 

 wings of Oedipoda, a genus of, 303, 

 304 ; colour adjustment of, 307 ; 

 specially defended insects attacked 

 by predaceous, 318 ; colours of pro- 

 cryptic and pseudepisematic, 378, 

 378 n. 3 ; bug mimicked by larva 

 of, 378 n. 3. 



Osborn, Professor H. F., on early 

 evolutionary ideas, 56 n. 2, 175; 

 on Lamarck and Erasmus Darwin, 

 141. 



Ostracodes in Cambrian and 

 Silurian, 39. 



Otter or ancon sheep, sudden 

 origin of, 185. 



Ovipositors possessed by Car- 

 boniferous cockroaches, 36. 



Ovum (see also ' germ- cells ') : 

 Natural Selection decides between, 

 xxxvi, xxxvii, xxxvii n. I, 73 n. 1, 

 I 35> 183 ; variation predetermined 

 in, 137, 183. 



Owl and owl's egg, riddle of the, 

 xxxvi. 



Oxford, experiments on colour 

 adjustment of caterpillars at, 306, 

 307 ; colour of Cleonus at Boar's 

 Hill and at Shotover Hill near, 307 ; 

 darkening of moths at, 309. 



Oxford, St. John's College, J. C. 

 Prichard a member of, 173; and 

 gentleman commoner of Trinity 

 College, 173. 



Oxford University Gazette 

 (1905), 218. 



Oxford University Museum, A. H. 

 Thayer's model in, 299: see also 

 Hope Department. 



Oxlip, Bardfield, shown by Darwin 

 to be a true species, xxviii. 



Oxlip common, shown by Darwin 

 to be a hybrid, xxviii. 



Oxylymma gibbicollis, 237. 



Pachyprora molitor, 283. 



Pagurus bernhardus, 356 ; — 

 cuanensis, 357 ; — prideauxii, 357. 



Pahpoon, Tenasserim, nest of 

 Microhierax found near, 290. 



' Painted Lady ' butterfly, 85. 



Palaeacridiidae (Acridiidae) of 

 Commentry Carboniferous, 36, 37. 



Palaearctic localities of Athyma 



and Limenitis mimics of male H. mi- 

 sippus, and their model in British 

 Museum (Leech Coll.), and as given 

 by Monsieur Ch. Oberthiir, 382. 



Palaeoblattidae(Blattidae) of Com- 

 mentry Carboniferous, 36, 37. 



Palaeodictyoptera, the Palaeozoic 

 insects, 34, 35. 



Palaeontology, limited records of, 

 100, 107, 108 ; Mutation and, no. 



Palaeophonus, possibly an aquatic 

 scorpion, 40. 



Palaeozoic, waste and sedimenta- 

 tion in, 16; tranquil deposition in, 

 17; tides, 17; insects, 18, 34-8; 

 corals, 28 ; Graptolites, 28 ; Verte- 

 brata, 30; Mollusca, 30, 41-2; 

 Gephyrea, 30, 42-3 ; Echinoderma, 

 30, 43 ; Appendiculata, 30 ; Arthro- 

 poda, 34-41 ; Myriapoda, 34 ; Phyl- 

 lopoda, 39 ; Malacostraca, 39, 40 ; 

 Phyllocarida, 39, 40 ; Arachnida, 40, 

 41; Pteropoda, 41, 42; Pterido- 

 spermeae, 45 ; Gymnosperms, 45 ; 

 Cordaiteae, 45. 



Pallas on origin of domestic 

 animals from more than one wild 

 species, 83, 84. 



palliata, Adamsia, carried by 

 Pagurus prideauxii, 357. 



palumbus, Columba, fertile pairing 

 with domestic pigeon, 83, 84. 



pammon, Papilio, 373 : seepolytes. 



pamphilus, Coenonympha, ' eye- 

 spot ' of, examined by lizard, 210. 



Pangenesis, Darwin's theory of, 

 123, 124 ; gemmules of, 124-6 ; dia- 

 gram of, described, 123, 124, 126; 

 inheritance of acquired characters 

 and, 123-7; difficulties of, 124-7; 

 mutilations and, 125 ; transfusion 

 of blood and, 125 ; grafted tissues 

 and, 125-6; atavism and, 125 ; use- 

 inheritance and, 126; diagram of 

 use-inheritance in relation to, de- 

 scribed, 126. 



Panmixia, W. Bateson on, xxxvii 

 n. 2. 



Pantopoda in classification, 33. 



Pantoporia, see Athyma, 382. 



Paper, importance of quality of, 

 1 70-2. 



Papilio dardanus (merofe), 

 X. 373-6 : see also 57, 57 n. 1, 71, 

 72, 72 n. 1, 337, 338, 354, 35s, 370, 



371. 373-5- 

 Papilio ages tor, 371 ; — (Drurya) 



