752 INDEX. 



Humor, sense of, in dogs, 80. 



Humphreys, H. N , on the habits of the stickleback, 249, 376' 



Hunger, instinct of, 127. 



Huns, ancient, flattening of the nnse by the, 665. 



Hunter, J..on thenuinberof species of man, 199; on secondary sexual 

 characters, 234; on the general behavior of female animals during 

 courtship. 251; on the muscles of the larynx in song-birds, 421; on 

 strength of males, 588; on the curled frontal hair of the bull, 606; on 

 the rejection of an ass by a female zebra, 617. 



Hunter, \V. W., on the recent rapid increase of the Sautali, 51; on 

 the Santali. 218. 



Huss, Dr Wax, on the mammary glands, 184. 



llnssey, Mr., on a partridge distinguishing persons, 468. 



llutchinson, Col., example of reasoning in a retriever, 88. 



llutton. Capt., on the male wild goat falling on his horns, 579. 



Huxley, T. 11., on the structural agreement of man with the apes, 

 2; on the agreement of the brain in man with that of lower animals, 

 G. on the adult age of the orang, 9. on the embryonic development 

 of man, 10, on the origin of man, 3. 12; on variation in the skulls of 

 the natives of Australia, 29. on the abductor of the fifth metatarsal in 

 apes, 47. on the nature of the reasoning power, 87; on the position 

 of man, 176: on the suborders of primates, 173; on the Lemuridae, 

 179, on the Dinosauria. 180; on the amphibian affinities of the Ich- 

 thyosauriaiis, 180, on variability of the skull in certain races o man, 

 198; on the races of man, 201; supplement on the brain, 227. 



Hybrid birds, production of, 470. 



Hydrophobia communicable between man and the lower animals, 7 



Hydropoms, dimorphism of females of, 313. 



Hyelapki.is porcinus, 623. 



Jlygrugonuu, 392. 



Jlyln, singing species of, 397. 



Mylubatex, absence of the thumb in, 57: upright, progression of 

 some species of, 59; maternal affection in a. 79. direction of the hair 

 on the arms of species of, 172; females of. less hairy below than 

 males, 037; hylubdtcs nrjilis, 57, hair on the arms of, 172; musical 

 voice of, 602, superciliary ridge of, 633; voice of, 647. 



llylobatcs hoolock. sexual difference of color in, 613: liyldbatcs lar, 

 57; hair on the arms of, 72. female less hairy, 637. hyldbutex lends- 

 cuf, 57. song of, 647; }ii'l<;b(ite6syudactylus,51\ laryngeal sac of, 602. 



llylopJtilu pritxiiiaiut, 349. 



Hymenoptera, 330; large size of the cerebral ganglia in, 437.; 

 classification of, 168: sexual differences in the wings of, 314; aculeate, 

 relative size of the sexes of. 316. 



Hymenopterftn. parasitic, with a sedentary male, 251. 



Jjyviiii'xc/ins aqunticus, 624. 



Hyprrytlim, proportion of the sexes in. 283. 



Jiypogymita di*i>nr, sexual difference of color in. 358. 



llypopyra. coloration of. 357. 



I;ex, male, falling on his horns, 579; beard of the, 607. 



Ibis, white, change of color of naked skin in, during the breeding 

 season, 442, scarlet, young of the, 548: ibis tantclns, age of inaturo 

 plumage in, 551; breeding in immature plumage, 552. 



