566 



OWLS. 



INDEX. 



PARAGUAY. 



on the number of digits in the 

 Ichthyopterygia, 37 ; on the canine 

 teeth in man, 40 ; on the walking 

 of the chimpanzee and orang, 50 ; 

 on the mastoid processes in the 

 higner apes, 53 ; on the hairiness 

 of elephants in elevated districts, 

 57 ; on the caudal vertebras of 

 monkeys, 58 ; classification of mam- 

 malia, 148 ; on the hair in mon- 

 keys, 152 ; on the piscine affinities 

 of the Ichthyosaurians, 159 ; on 

 pologamy and monogamy among 

 the antelopes, 217 ; on the horns 

 of Antilocapra americana, 234 ; on 

 the musky odour of crocodiles 

 during the breeding season, 351 ; 

 on the scent-glands of snakes, 352 ; 

 on the Dugong, Cachalot and Or- 

 nithorhynchus, 502 ; on the antlers 

 of the red deer, 510; on the den- 

 tition of the Camelidse, 514 ; on the 

 horns of the Irish elk, 515 ; on 

 the voice in the giraffe, porcupine, 

 and stag, 526 ; on the laryngeal 

 sac of the gorilla and orang, 527 ; 

 on the odoriferous glands of mam- 

 mals, 528, 529 ; on the effects of 

 emasculation on the vocal organs of 

 men, 566 ; on the voice of Hylo- 

 bates agilis, 567 ; on American 

 monogamous monkeys, 567. 



Owls, white, new mates found by, 

 408. 



Oxynotus, difference of the females of 

 two species of, 470. 



Pachydermata, 218. 



Pachytylus migratorius, 283. 



Paget, on the abnormal development 

 of hairs in man, 19 ; -on the thick- 

 ness of the skin on the soles of the 

 feet of infants, 33. 



Painting, pleasure of savages in, 178. 



Palccmon, chela of a species of, 267. 



Palceomis, sexual differences cf colour 

 in, 494. 



——javanicus, colour of beak of, 

 461. 



rosa, young of, 467. 



Palarnedea cornuta, spurs on the 

 wings, 364. 



Paleolithic period, 145. 



Palestine, habits of the chaffinch in, 

 248. 



Pallas, on the perfection of the senses 

 in the Mongolians, 34 ; on the 

 want of connexion between cli- 

 mate and the colour of the skin, 

 192 ; on the polygamous habits of 

 Antilope Saiga, 217 ; on the lighter 

 colour of horses and cattle in 

 winter in Siberia, 229 ; on the 

 tusks of the musk-deer, 513, 514; 

 on the odoriferous glands of mam- 

 mals, 529 ; on the odoriferous 

 glands of the musk-deer, 530 ; on 

 winter changes of colour in mam- 

 mals, 542 ; on the ideal of female 

 beauty in North China, 578. 



Pahnaris accessorius, muscle variations 

 of the, 27. 



Pampas, horses of the, 181. 



Pangenesis, hypothesis of, 228, 231. 



Panniculus carnosus, 13. 



Pansch, on the brain of a foetal Cebus 

 apella, 205. 



Papilio, proportion of the sexes in 

 North American species of, 250 ; 

 sexual differences of colouring in 

 species of, 309 ; coloration of the 

 wings in species of, 312. 



ascanius, 309. 



Sesostris and Childrence, varia- 

 bility of, 319. 

 Turnus, 250. 



Papilionidse, variability in the, 319. 

 Papuans, line of separation between 



the, and the Malays, 169 ; beards 



of the, 560 ; hair of, 575. 

 and Malays, contrast in charac 



ters of, 168. 

 Paradise, Birds of, 405, 462 ; supposed 



by Lesson to be polygamous, 219; 



rattling of their quills by, 375; 



racket-shaped feathers in, 384 ; 



sexual differences in colour of, 385 ; 



decomposed feathers in, 385, 403 : 



display of plumage by the male, 



395. 

 Paradisea apoda, barbless feathers in 



the tail of, 385 ; plumage of, 385 ; 



and P. papuana, 385 ; divergence 



of the females of, 470 ; increase of 



beauty with age, 485. 

 Paraguay, Indians of, eradication of 



eyebrows and eyelashes by, 580. 



