INDEX 



841 



lemuroidea, 33 ; on variability of the 

 muscles ia lemuroidea, 64, 72; on 

 the caudal vertebras ot monkeys, 

 86; on the classification of the 

 primates, 206; on the orang and on 

 man, 20&-20'7 ; on differences in the 

 lemuroidea, 207 ; on the crest of the 

 male newt, 463. 



Uobius, Frol, oa reasoning powers in 

 a pike, 108. 



Ifocking-thrush, partial migration of, 

 531 ; young of the, 628. 



Modifications, unserviceable, 90-91. 



Uoggridge, J. T., on habits of spiders, 

 99; on habits of ants, 198. 



Moles, numerical proportion of the 

 sexes in, 326; battles of male, 

 646. 



MoUlenesia petenensis, sexual differ- 

 ence in, 439. 



MoUusca, beautiful colors and shapes 

 of, 348 ; absence of secondary sex- 

 ual characters in the, 346. 



MoUuscoida, 213, 347. 



Monacanlhus scopas and M. Peronii, 

 432. 



Mongolians, perfection of the senses 

 in, 56. 



Monkey, protecting his keeper from a 

 baboon, 142, 161; bonnet-, 202; 

 rhesus-, sexual difference in color 

 of the, 696, 711; mustache-, colors 

 of the, 694. 



Monkeys, liability of, to the same dis- 

 eases as man, 23; male, recognition 

 of women by, 25; diversity of the 

 mental faculties in, 47; breaking 

 hard fruits with stones, 75; hands 

 of the, 75-76; basal caudal ver- 

 tebrae of, imbedded in the body, 86; 

 revenge taken by, 100; maternal 

 affection in, 100-101; variability of 

 the faculty of attention in, 106; 

 American, manifestation of reason 

 in, 110; using stones and sticks, 

 116; imitative faculties of, 122; 

 signal-cries of, 123; mutual kind- 

 nesses of, 139 ; sentinels posted by, 

 138; human characters bf, 301- 

 202; American, direction of the 

 hair on the arms of some, 303-203 ; 

 gradation of species of, 233 ; beards 

 of, 688; ornamental characters of, 

 707-708; analogy of sexual differ- 

 ences ot, with those of man, 719; 



different degrees of difference in 

 the sexes of, 723; expression of 

 emotions by, 736 ; generally monog- 

 amous habits of, 769; polygamous 

 habits of some, 760; naked surfa<!ea 

 of, 772-773. 



Monogamy, not primitive, 194. 



Monogenists, 234. 



Mononychus pseudaoori, stridulatiou 

 of, 398. 



Monotremata, 211 ; development of the 

 nictitating membrane in, 36; lactif- 

 erous glands of, 217; connecting 

 mammals with reptiles, 220. 



Monstrosities, analogous, in man and 

 lower animals, 51; caused by ar- 

 rest of development, 58; correla- 

 tion of, 67; transmission of, 230, 



Montagu, G-., on the habits of the 

 black and red grouse, 289; on the 

 pugnacity of the ruff, 469 ; on the 

 singing of birds, 478; on the double 

 moult of the male pintail, 508. 



Monteiro, Mr., on Bucorax abyssini'- 

 cua, 496. 



Montes de Oca, M., on the pugnacity 

 of male humming-birds, 468. 



Monticola cyanea, 688. 



Monuments, as traces of extinct tribes, 

 241. 



Moose, battles of, 647 ; horns of the, 

 an encumbrance, 665. 



Moral and instinctive impulses, alli- 

 ance of, 161. 



faculties, their influence on nat- 

 ural selection in man, 173. 



rules, distinction between the 



higher and lower, 165-166. 



sense, so-called, derived trcm the 



social instincts, 163-164; origin of 

 the, 168. 



tendencies, inheritance of, 168. 



Morality, supposed to be founded in 



selfishness, 162; test of, the g:en- 

 eral welfare of the community, 

 163-164; gradual rise of, 168-169; 

 influence of a high standard of, 

 178-179. 

 Morgan, L. H., on the beaver, 97 ; on 

 the reasoning powers of the beaver, 

 107; on the forcible captnre (A 

 wives, 194; on the castoieum of 

 the beaver, 683; marriage un- 

 known in primeval times, 767-768; 

 on polyandry, 763. 



