INDEX. 



S4d 



Mayhew, E., on the affection be- 

 tween individuals o( different 

 sexes in the dog, 519. 



Maynard, C. J., on the sexes of 

 Chrysemys piota, 345. 



Meckel, on correlated variation of 

 the muscles of the arm and leg, 

 42. 



Medicines, effect produced by, the 

 same in man and in monkeys, 7. 



Medusae, bright colors of some, 

 257. 



Megalithic structures, prevalence 

 of, 175. 



Megapious validus, sexual differ- 

 ence of color in, 452. 



Megasoma, large size of males of, 

 276. 



Meigs, Dr. A., on variation in the 

 skulls of the natives of Amer- 

 ica, 25. 



Meinecke, on the numerical pro- 

 portion of the sexes in butter- 

 flies, 246. 



Melanesians, decrease of, 181. 



Meldola, Mr., colors and mar- 

 riage flight of Colias and Pieris, 

 315. 



Meliphagidse, Australian, nidifi- 

 cation of, 448. 



Melita, secondary sexual char- 

 acters of, 265. 



Meloe, difference of color in the 

 sexes of a species of, 291. 



Memory, manifestations of, in an- 

 imals, 72. 



Memnon, young, 164. 



Mental characters, difference of, 

 in different races of men, 164. 



faculties, diversity of, in the 



same race of men, 25; inherit- 

 ance of, 27; variation of, in the 

 same species, 27, 64; similarity of 

 the, in different races of man, 

 174; of birds, 405. 



powers, difference of, in the 



two sexes in man, 558. 



Menura Alberti, 401; song of, 366. 



superba, 401; long tails of 



both sexes of, 445. 



Merganser, trachea of the male, 



serrator, male plumage of. 



388. 

 Mergus cucullatus, speculum of, 



231. 



merganser, young of, 462. 



Metallura, splendid tail-feathers 



of, 437. 

 Methoca ichneumonides, large 



male of, 277. 

 Meves, M., on the drumming of 



the snipe, 373. 

 Mexicans, civilization of the, not 



foreign, 141. 

 Meyer, on a convoluted body at 



the extremity of the tail in a 



Macacus and a cat, 22. 

 , Dr. A., on the copulation of 



Phryganidse of distinct species, 



272. 



Meyer, Prof. L., on development 

 of helix of ear, 15; men's ears 

 more variable than women's, 

 219; antennffi serving as ears, 

 278. 



Migrations of man, effects of, 46. 



Migratory instinct of birds, 101; 

 vanquishing the maternal, 104, 

 107. 



Mill, J. S., on the origin of the 

 moral sense, 95; on flie "greatest 

 happiness principle," 116; on the 

 diiterence of the mental powers 

 in the sexes of man, 559. 



Millipedes, 270. 



Milne-Edwards, H., on the use of 

 the enlarged chelae of the male 

 Gelasimus, 263. 



Milvago leucurus, sexes and 

 young of, 473. 



Mimicry, 323. 



Mimus polyglottus, 406. 



Mind, difference of, in man and 

 the highest animals, 122; simi- 

 larity of the, in different races, 

 174. 



Minnow, proportion of the sexes 

 in the. 245. 



Mirror, larks attracted by, 107. 



Mitchell, Dr., Interbreeding in the 

 Hebrides, 184. 



Mitford, selection of children in 

 Sparta, 28. 



Mivart, St. George, on the reduc- 

 tion of organs, 11; on the ears 

 of the lemuroidea, 15; on varia- 

 bility of the muscles in lemuroi- 

 dea, 40, 46; on the caudal verte- 

 brae of monkeys, 56; on the 

 classiflcation 6f the primates, 

 149; on the orang and on man, 

 149, 150; on differences in the 

 lemuroidea, 150; on the crest of 

 the male newt, 344. 



Mobius, Prof., on reasoning pow- 

 ers in a pike, 73. 



Mocking-thrush, partial migration 

 of, 406; young of the, 482. 



Modifications, unserviceable, 59. 



Moggrldge, J. T., on habits of 

 spiders, 67; on habits of ants, 

 143. 



Moles, numerical proportion of 

 the sexes in, 242; battles of male, 

 496. 



MoUienesia petenensis, sexual dif- 

 ference in, 334. 



MoUusca, beautiful colors and 

 shapes of, 260; absence of sec- 

 ondary sexual characters in the, 

 259. 



Molluscoida, 155, 259. 



Monacanthus scopas and M. Per- 

 onii, 328. 



Mongolians, perfection of the 

 senses in, 33. 



Monkey, protecting his keeper 

 from a baboon, 100, 107; bonnet-, 

 146; rhesus-, sexual difference in 

 color of the, 534, 546; moustache-, 

 colors of the, 532. 



