MOLES. 



INDEX. 



MOTACILLJE. 



661 



Moies, numerical proportion of the 

 sexes in, 247 ; battles of male, 500. 



Molliencsia petenensis, sexual differ- 

 ence in, 337. 



Mollusca, beautiful colours and shapes 

 of, 263 ; absence of secondary 

 sexual characters in the, 262. 



Molluscoida, 159, 262. 



Monacantuus scopas and M. Peronii, 

 331. 



Mongolians, perfection of the senses 

 in, 34. 



Monkey, protecting his keeper from 

 a baboon, 103, 110; bonnet-, 151; 

 rhesus-, sexual difference in colour 

 of the, 539, 550 ; moustache-, 

 colours of the, 537. 



Monkeys, liability of, to the same 

 diseases as man, 7 ; male, recog- 

 nition of women by, 8 ; diversity 

 of the mental faculties in, 27 ; 

 breaking hard fruits with stones, 

 50; hands of the, 50, 51; basal 

 caudal vertebras of, imbedded in the 

 body, 59 ; revenge taken by, 69 ; 

 maternal affection in, 70 ; varia- 

 bility of the faculty of attention 

 in, 74 ; American, manifestation of 

 reason in, 77 ; using stones and 

 sticks, 81 ; imitative faculties of, 

 87 ; signal-cries of, 87 ; mutual 

 kindnesses of, 101; sentinels posted 

 by, 101 ; human characters of, 

 150 ; American, direction of the 

 hair on the arms of some, 151 ; 

 gradation of species of, 175; beards 

 of, 531 ; ornamental characters of, 

 549 ; analogy of sexual differences 

 of, with those of man, 558 ; dif- 

 ferent decrees of difference in the 

 sexes of, 561; expression of emo- 

 tions by, 572 ; generally mono- 

 gamous habits of, 590 ; polygamous 

 habits of some, 590 ; naked surfaces 

 of, 600. 



Monogamy, not primitive, 144. 



Monogenists, 176. 



Mononychus pseudacori, stridulation 

 of, 305. 



Monotremata, 157 ; development of 

 the nicitating membrane in, 17 ; 

 lactiferous glands of, 162 ; connect- 

 ing mammals with reptiles, 165. 



Monstrosities, analogous, in man and 

 lower animals, 30 ; caused by arrest 



of development, 35 ; correlation of, 

 44 ; transmission of, 173. 



Montagu, G., on the habits of the 

 black and red grouse, 219; on the 

 pugnacity of the ruff, 361 ; on the 

 singing of birds, 368 ; on the 

 double moult of the male pintail, 

 393. 



Monteiro, Mr., on Bucorax abyssi- 

 nicus, 383. 



Montes de Oca, M., on the pugnacity 

 of male Humming-birds, 360. 



Monticola cyanea, 456. 



Monuments, as traces of extinct 

 tribes, 181. 



Moose, battles of, 501 ; horns of the, 

 an incumbrance, 515. 



Moral and instinctive impulses, alli- 

 ance of, 111. 



faculties, their influence on 



natural selection iu man, 127. 

 rules, distinction between the 



higher and lower, 122. 

 — sense, so-called, derived from 

 the social instincts, 120, 121; origin 

 of the, 124. 



tendencies, inheritance of, 124. 



Morality, supposed to be founded in 

 selfishness, 120 ; test of, the general 

 welfare of the community, 121' 

 gradual rise of, 125; influence of a 

 high standard of, 132. 



Morgan, L. H., on the beaver, 67 ; on 

 the reasoning powers of the beaver, 

 75 ; on the forcible capture of 

 wives, 144 ; on the castoreum o/ 

 the beaver, 529 ; marriage unknown 

 in primeval times, 588 ; on poly 

 andry, 593. 



Morley. J., on the appreciation of 

 praise and fear of blame, 146. 



Morris, F. O., on hawks feeding an 

 orphan nestling, 409. 



Morse, Dr., colours of mollusca, 264. 



Morselli, E., division of the malar 

 bone, 39. 



Mortality, comparative, of females 

 and males, 216, 243. 



Morton, on the number of species of 

 man, 174. 



Moschkau, Dr. A., on a speaking 

 starling, 85. 



Moschus moschiferus, odoriferous or- 

 gans of, 529. 



Motacillce, Indian, young of, 468. 



