452 



ORYX. 



INDEX. 



PALLAS. 



differences in the stridulant organs 

 of, i. 383. 



Oryx leucoryx, use of the horns of, ii. 

 251, 263. 



Osphranter rufus, sexual difference in 

 the colour of, ii, 286. 



Ostrich, African, sexes and incuba- 

 tion of the, ii. 205. 



Ostriches, stripes of young, ii. 184. 



Otaria juhata, mane of the male, ii. 

 267. 



Otaria ntgrescens, difference in the 

 coloration of the sexes of, ii. 287. 



Otis bengalemis, love-antics of the 

 male, ii. 68. 



Otis tarda, polygamous, i. 269; throat- 

 pouch of the male, ii. 58. 



Ouzel, ring-, colours and nidification 

 of the, ii. 179. 



Ouzel, water-, colours and nidifica- 

 tion of the, ii. 170. 



Ovibos moschatus, horns of, ii. 247. 



Ovipositor of insects, i. 254. 



Ovis cycloceros, mode of fighting of, 

 ii. 249. 



Ovule of man, i. 14. 



OwEX, Prof., on the Corpora Wolffiana, 

 i. 16; on the great toe in man, i. 

 16; on the nictitating membrane 

 and semilunar fold, i. 23 ; on the 

 development of the posterior mo- 

 lars in different races of man, i. 26 ; 

 on the length of the coecum in the 

 Koala, i. 27 ; on the coccygeal ver- 

 tebrae, i. 29 ; on rudimentary struc- 

 tures belonging to the reproductive 

 system, i. 31 ; on abnormal condi- 

 tions of the human uterus, i. 123; 

 on the number of dibits in the 

 Ichthyopterygia, i. 125; on the 

 canine teeth in man, i. 126 ; on 

 the walking of the chimpanzee and 

 orang, i. 139 ; on the mastoid pro- 

 cesses in the higher apes, i. 143 ; 

 on the hairiness of elephants in 

 elevated districts, i. 149 ; on the 

 caudal vertebrae of monkeys, i. 

 150 ; classification of mammalia, 

 i. 187 ; on the hair in monkeys, i. 

 194 ; on the piscine affinities of the 

 Ichthyosaurians, i. 204 ; on poly- 

 gamy and monogamy among the 

 antelopes, i. 267 ; on the horns of 

 . Antilocapra americana, i. 289 ; on 



the musky odour of crocodiles 

 during the breeding season, ii. 29 ; 

 on the scent-glands of snakes, ii. 

 30 ; on the Dugong, Cachalot and 

 Ornithorhi/nchus, ii. 242 ; on the 

 antlers of the red deer, ii. 252 ; on 

 the dentition of the camelidse, ii. 

 257 ; on the tusks of the Mam- 

 moth, ii. 258 ; on the horns of 

 the Irish elk, ii, 259 ; on the voice 

 in the giraffe, porcupine, and stag, 

 ii. 274 ; on the laryngeal sac of 

 the gorilla and orang, ii, 276 ; on 

 the odoriferous glands of mammals, 

 ii, 279, 280; on the effects of emas- 

 culation on the vocal organs of 

 men, ii, 330 ; on the voice of IL/io- 

 hates agilis, ii, 332 ; on American 

 monogamous monkeys, ii,, 362. 



Owls, white, new mates found bv, ii. 

 105. 



Oxynotus, difference of the females of 

 two species of, ii. 193. 



P. 



Pachydermata, i. 268. 



Paget, on the abnormal develop- 

 ment of hairs in man, i. 25 ; on 

 the thickness of the skin on the 

 soles of the feet of infants, i. 118. 



Painting, i. 232. 



Palsemon, chela? of a species of, i. 331. 



Falxornis, sexual differences of colour 

 in, ii. 231. 



Palxornis javanicus, colour of beak 

 of, ii. 179. 



Palccornis 7'osa, young of, ii. 188. 



Palamedea cornuta, spurs on the wings 

 ii. 47. 



Paleolithic period, i. 183. 



Palestine, habits of the chaffinch in, 

 i. 307. 



Pallas, on the perfection of the 

 senses in the Mongolians, i. 119 ; on 

 the want of connexion between cli- 

 mate and the colour of the skin, i, 

 241 ; on the polygamous habits of 

 Anfilope Saiga, i, 267 ; on the 

 lighter colour of horses and cattle 

 in winter in Siberia, i, 282 ; on the 

 tusks of the musk-deer, ii. 256, 

 258 ; on the odoriferous glands of 

 mammals, ii, 279 ; on the odorife- 



