INDEX. 



413 



the Acridiidae, i. 345 ; on the presence of 

 rudimentary stridulating organs in some 

 female Orthoptera, i. 343 ; on the stridu- 

 lation of Necrophorus, i. 367 ; on the 

 stridulant organ of Cerambyx Jieros, i. 

 368; on the stridulating organs in the 

 Coleoptera, i. 370; on the ticking of 

 Anobium, i. 373 ; on the stridulant or- 

 gan of Geotrupes, i. 369. 



Language an art, i. 53 ; articulate, origin 

 of, i. 54 ; relation of the progress of, to 

 the development of the brain, i. 55 ; ef- 

 fects of inheritance in production of, i. 

 56 ; complex structure of. among barbar- 

 ous nations, i. 59; natural selection in, i. 

 59 ; gesture, i. 224 ; primeval, i. 226 ; of 

 a lost tribe preserved by a parrot, i. 22S. 



Languages, presence of rudiments in, i. 

 53 ; classification of, i. 5S ; variability of, 

 i. 53 ; crossing or blending of, i. 53 ; com- 

 plexity of, no test of perfection or proof 

 of special creation, i. 60 ; resemblance of, 

 evidence of cooimunity of origin, i. 1S2. 



Languages and species, identity of evi- 

 dence of their gradual development, i. 

 57, 



Lanim, ii. 172; characters of young, ii. 

 177. 



Lanim rufus, anomalous young of, ii. 202. 



Lankester, E. E., on comparative longev- 

 ity, i. 161, 164; on the destructive effects 

 of intemperance, i. 166. 



Lanugo, of the human foetus, i. 25 ; ii. 359. 



Lapponian language, highly artificial, i. 59. 



Lark, proportion of the sexes in the, i. 

 298; female, singing of the, ii. 51. 



Larks, attracted by a mirror, ii. 107. 



Lartet, E., on the size of the brain in 

 mammals, i. 49 ; comparison of cranial 

 capacities of skulls of recent and tertiary 

 mammals, i. 140; on Dryopitheeus, i. 

 191. 



Larm, seasonal ch£j?ge of plumage in, ii. 

 218. 



Larva, luminous, of a Brazilian beetle, i. 

 335. 



Larynx, muscles of the, in song-birds, ii. 

 52. 



Lasiocampa quercus, attraction of males 

 by the female, i. 303 ; sexual difference 

 of color in, i. 3S6 



Latham, R. G., on the migrations of man, 

 i. 131. 



Latooka, perforation of the lower lip by 

 the women of, ii. 325. 



Laurillard, on the abnormal division of 

 the malar bone in man, i. 119. 



Lawrence, W., on the superiority of sav- 

 ages to Europeans in power of sight, i. 

 114; on the color of negro infants, ii. 

 303 ; on the fondness of savages for or- 

 naments, ii. 322; on beardless races, ii. 

 832 ; on the beauty of the English aris- 

 tocracy, ii. 341. 



Layard, E. L., on an instance of rational- 

 ity in a Cobra, ii. 29 ; on the pugnacity 

 of Gallus Stanleyi, ii. 42. 



Laicock, Dr., on vital periodicity, i. 12. 



Leaves, decaying, tints of, i. 314. 



Lecky. Mr., on the sense of duty, i. 68; oc 

 suicide, i. 90; on the practice of celibacy, 

 i. 92 ; his view of the crimes of savages, 

 i. 93 ; on the gradual rise of morality, i. 

 99. 



Leconte, J. L., on the stridulant organ in 

 the Coprini and Dynastini, i. 369. 



Lee, H., on the numerical^ proportion of 

 the sexes in the trout, i. 299. 



Leg, calf of the, artificially modifiod, ii. 

 324. 



Legitimate and illegitimate children, pro- 

 portion of the sexes in, i. 292. 



Legs, variation of the length of the, in 

 man, i. 104 ; proportions of, in soldiers 

 and sailors, i. 112; fore-, atrophied in 

 some male butterflies, i. 334 ; peculiar- 

 ities of, in male insects, i. 334. 



" Lek " of the black-cock and capercailzie, 

 ii. 96. 



Lemoine, Albert, on the origin of language, 

 i. 54. 



Lemur macaco, sexual difference of color 

 in, ii. 276. 



Lemurid.e, i. 1S7; their origin, i. 204; po- 

 sition and derivation of the, i. 194 ; ears 

 of the, i. 22 ; variability of the muscles in 

 the, i. 123. 



Lemurs, uterus in the, i. 118; tailless spe- 

 cies of, i. 187. 



Leopards, black, ii. 230. 



Lepidoptera, i. 374; numerical propor- 

 tions of the sexes in the, i. 301 ; coloring 

 of, i. 375 ; ocellated spots of, ii. 127. 



Lepidosiren, i. 196, 204. 



Lenguas, disfigurement of the ears of the, 

 ii. 325. 



Leptorhynchiis angustatus, pugnacity of 

 male, i. 363. 



Leptura testacea, difference of color in the 

 sexes of, i. 356. 



Lequay, on the occurrence of the supra- 

 condyloid foramen in the humerus of 

 man, i. 28. 



Leroy, on the wariness of young foxes in 

 hunting-districts, i. 4S ; oh the desertion 

 of their young by swallows, i. 80. 



Lesse, valley of the, i. 28. 



Lesson, on the Birds of Paradise, i. 260, 

 ii. 93 ; on the sea-elephant, ii. 265. 



Lesthi bombylans, difference of the sexes 

 in, i. 354. 



Lethrm cepJialotes, pagnacity of the 

 males of, i. 360, 364. 



Leuckart, K., on the ve&iculaprostatica*, 

 i. 30 ; on the influence of thr. age of par- 

 ents on the sex of offspring, i. 292. 



Levator claviculcz muscle, i. 123. 



Libellula depi % essa, color of the male, L 

 352. 



Libelluliu.e, relative size of the sexes o£, 

 i. 337 ; difference in the sexes of, i. 351. 



Lice of domestic animals and man, i. 211. 



Licentiousness, prevalence of among sav« 

 ages, i. 92 ; a check upon population, i 

 129. 



LicHTENStEiN, on CJiera progn&, ii. 115. 



