>70 



POLYGENISTS. 



INDEX. 



PUFF-BIRUS. 



domestication, 220 ; supposed in- 

 crease of tenia le births by, 24-5 ; in 

 the stickleback, 332. 



Polygenists, 176. 



Polynesia, prevalence cf infanticide 

 in, 592. 



Polynesians, wide geographical range 

 of 29 ; difference of stature among 

 the, 31 ; crosses of, 173 ; variability 

 of, 174 ; heterogeneity of the, 192 ; 

 aversion of, to hairs on the face, 

 581. 



Pohjplectron, number of spurs in, 36-1; 

 display of plumage by the male, 

 396 ; gradation of characters in, 

 431 ; female of, 471. 



chinquis, 397, 432. 



ffard'cickii, 432. 



malaccense, 432, 433. 



Napoleonis, 432, 433. 



Polyzoa, 262. 



Pontoporeia affinis, 266. 



Porcupine, mute, except in the rut- 

 ting season, 526. 



Pores, excretory, numerical relation 

 of, to the hairs in sheep, 198. 



P<<rpit<z, bright colours of some, 260. 



Portax picta, dorsal crest and throat- 

 tuft of, 530 ; sexual differences of 

 colour in, 535, 543. 



Portunus puber, pugnacity of, 269. 



Potamochccrus penicillatus, tusks and 

 facial knobs of the, 520. 



Pouchet, G., the relation of instinct 

 to intelligence, 67 ; on the in- 

 stincts of ants, 147 ; on the caves 

 of Abou-Simbel, 168; on the im- 

 munity of negroes from yellow 

 fever, 193; change of colour in 

 fishes, 344. 



Pouter pigeon, late development of 

 the large crop in, 238. 



Powell, Dr., on stridulation, 281. 



Power, Dr., on the different colours 

 of the sexes in a species of Squilla, 

 271. 



Powys, Mr., on the habits of the 

 chaffinch in Corfu, 248. 



Pre-eminence of man, 48 



Preference for males by female birds, 

 il4, 420 ; shewn by mammals, in 

 pairing, 522. 



Prehensile organs, 209. 



Presbytis eniellus, fighting of tne 

 male, 562. 



Preyer, Dr., on function of shell of 

 ear, 14 ; on supernumerary mam- 

 mae in women, 37. 



Prichard, on the difference of statur8 

 among the Polynesians, 31 ; on the 

 connection between the breadth of 

 the skull in the Mongolians and the 

 perfection of their senses, 34 ; on 

 the capacity of British skulls of 

 different ages, 55 ; on the flattened 

 heads of the Colombian savages, 

 575 ; on Siamese notions of beauty, 

 578 ; on the beardlessness of the 

 Siamese, 581 ; on the deformation 

 of the head among American tribes 

 and the natives of Arakhan, 583. 



Primary sexual organs, 207. 



Primates, 149, 205 ; sexual differences 

 of colour in, 537. 



Primogeniture, evils of, 135. 



Prionidae, difference of the sexes ia 

 colour, 294. 



Proctotretus multimaculatus, 358. 



tenuis, sexual difference in the 



colour of, 358. 



Profligacy, 137. 



Progenitors, early, of man, 160. 



Progress, not the normal rule in hu- 

 man society, 133; elements of, 141. 



Prong-horn antelope, horns of, 234. 



Proportions, difference of, in distinct 

 races, 167. 



Protective colouring in butterflies, 

 312 ; in lizards, 358; in birds, 473, 

 489 ; in mammals, 542. 



nature of the dull colouring; of 



female Lepidoptera, 321, 322, 324. 

 — resemblances in fishes, 344. 



Protozoa, absence of secondary sexual 

 characters in, 260. 



Pruner-Bey, on the occurrence of the 

 supra-condyloid foramen in the 

 humerus of man. 22 ; on the colour 

 of negro infants, 557. 



Prussia, numerical proportion of male 

 and female births in, 243. 



Psocus, proportions of the sexes in, 

 254. 



Ptarmigan, monogamous, 219 ; sum- 

 mer and winter plumage of the, 

 390, 392 ; nuptial assemblages of, 

 406 ; triple moult of the, 462 ; pro- 

 tective coloration of, 473. 



Puff-birds, colours and nidification o/ 

 the, 455. 



