456 



PLANARI^. 



INDEX. 



PHE-EMINENCE. 



Flanarise, bright colours of some, i. 



322. 

 Plantain-eaters, colours and nidi- 



fication of the, ii. 171; both sexes 



of, equally brilliant, ii. 177. 

 Plants, cultivated, more fertile than 



wild, i. 132 ; Nageli, on natural 



selection in, i. 152 ; male flowers of, 



mature before the female, i. 260 ; 



phenomena of fertilisation in, i. 



273 ; relation between number and 



size of seeds in, i. 317. 

 Platalea, ii. 60 ; change of plumage 



in, ii. 179. 

 Platyblemnus, i. 361. 

 J'latycercus, young of, ii. 209. 

 Platyphyllum concavum, i. 352, 356. 

 PLATrRRHiNE monkeys, i. 196. 

 Platysma myoides, i. 19. 

 Flecostomus, head-tentacles of the 



male of a species of, ii. 10. 

 Plecostomns barbatus, peculiar beard 



of the male, ii. 10. 

 Plcctropterus gambensis, spurred wings 



of, ii. 46. 

 Ploceus, ii. 54. 

 Plovers, wing-spurs of, ii. 48 ; 



double moult in, ii. 83. 

 Plumage, changes of, inheritance of, 



by fowls, i. 281 ; tendency to ana- 



lagous variation in, ii. 74 ; display 



of, by male birds, ii. 86, 96 ; 



changes of, in relation to season, 



ii. 180; immature, of birds, ii. 183, 



187 ; colour of, in relation to pro- 

 tection, ii. 223. 

 Plumes on the head in birds, difference 



of, in the sexes, ii. 164. 

 Pneutnora, structure of, i. 357. 

 Podica, sexual difference in the 



colour of the irides of, ii. 128. 

 Poeppig, on the contact of civilised 



and savage races, i. 239. 

 Poison, avoidance of, by animals, i. 



49. 

 Poisonous fruits and herbs avoided 



by animals, i. 36. 

 Poisons, immunity from, correlated 



with colour, i. 242. 

 Polish fowls, origin of the crest in, 



i. 284. 

 Pollen and van Dam, on the colours 



of Lemur macaco, ii. 290. 

 Polyandry, ii. 365 ; in certain 



cyprinidaj, i. 309 ; among the ela- 

 teridge, i. 313. 



Polydactylism in man, i. 125. 



Polygamy, influence of^ upon* sexual 

 selection, i. 265 ; superinduced by 

 domestication, i. 270 ; supposed 

 increase of female births by, i. 303 ; 

 in the stickleback, ii. 2. 



POLYGENISTS, i. 228. 



Polynesia, prevalence of infanticide 

 in, ii. 364. 



Polynesians, aversion of, to hairs on 

 the face, ii. 349 ; wide geographical 

 range of, i. 112; diflerence of 

 stature among the, i. 115; crosses 

 of, i. 225; variability of, i. 225; 

 heterogeneity of the, i. 241. 



Polyplectron, display of plumage by 

 the male, i. 89 ; number of spurs 

 in, ii. 46 ; gradation of characters 

 in, ii. 137 ; female of, ii. 194. 



Polyplectron chinquis, ii. 90, 138, 

 139. 



Polyplectron Hardwickii, ii. 138, 139. 



Polyplectron malaccense, ii. 139, 140. 



Polyplectron Napoleonis, ii. 138, 140. 



POLYZOA, i. 324. 



Pontoporeia affinis, i. 329. 



Porcupine, mute, except in the rut- 

 ting season, ii. 274. 



Pores, excretory, numerical relation 

 of, to the hairs in sheep, i. 248. 



Porpitse, bright colours of some, i. 

 322. 



Portax picta, dorsal crest and throat- 

 tuft of, ii. 282 ; sexual differences 

 of colour in, ii. 287, 299. 



Portunus puber, pugnacity of, i. 332. 



Potamochoerus penicillatus, tusks and 

 facial knobs of the, ii. 266. 



PoucriET, G., on the ratio of instinct 

 and intelligence, 1. 37 ; on the in- 

 stincts of ants, i. 187; on the caves 

 of Abou-Simbel, i. 217; on the im- 

 munity of negroes from yellow 

 fever, i. 243. 



Pouter pigeon, late development of 

 the large crop in, i. 293. 



Power, JDr., on the different colours 

 of the sexes in a species of Squilla, 



1 o o r 



1. ooo. 

 POWYS, Mr., on the habits of the 



chaffinch in Corfu, i. 307. 

 Pre-eminence of man, i. 137. 



