INDEX. 



ABBOTT. 



AGfllOS. 



A. 



Abbot, C, on the battles of seals, 

 500. 



Abductor of the fifth metatarsal, 

 presence of, in man, 42. 



Abercrombie, Dr., on disease of the 

 brain affecting speech, 88. 



Abipones, marriage customs of the, 

 598. 



Abou-Simbel, caves of, 168. 



Abortion, prevalence of the practice 

 of, 46. 



Abstraction, power of, in animals, 83. 



Acalles, stridulation of, 306. 



Acanthodactylus capensis, sexual dif- 

 ferences of colour in, 357. 



Accentor modularis, 473. 



Acclimatisation, difference of, in dif- 

 ferent races of men, 167. 



Achetidae, stridulation of the, 282, 

 283, 285 ; rudimentary stridulating 

 organs in female, 288. 



Acilius sulcatus, elytra of the female, 

 276. 



Acomus, development of spurs in the 

 female of, 450. 



Acridiidae stridulation of the, 282, 

 286 ; rudimentary stridulating or- 

 gans in female, 288. 



Acromio-basilar muscle, and quad- 

 rupedal gait, 42. 



Acting, 178. 



Actiniae, bright colours of, 260. 



Adams, Mr., migration of birds, 108 ; 

 intelligence of nut-hatch, 418 ; on 

 the Bomb '/cilia carolinensis, 461. 



Admiral butterfly, 312. 



Adoption of the young of other ani- 

 mals by female monkeys, 70. 



Advancement in the organic scale, 

 Von Baer's definition of, 164. 



Aeby, on the difference between the 



skulls of man and the quadrumana> 

 149. 



Esthetic faculty, not highly deve- 

 loped in savages, 93. 



Affection, maternal, 70 ; manifestation 

 of, by animals, 70 ; parental and 

 filial, partly the result of natural 

 selection, 105 ; mutual, of birds, 

 410; shewn by birds in confine- 

 ment, for certain persons, 411. 



Africa, probably the birthplace of 

 man, 155; South, crossed popula- 

 tion of, 174 ; South, retention of 

 colour by the Dutch in, 193 ; South, 

 proportion of the sexes in the but- 

 terflies of, 250 ; tattooing practised 

 in, 574 ; Northern, coiffure of 

 natives of, 575. 



Asrassiz. L., on conscience in doers, 

 103; on the coincidence of the 

 races of man with zoological pro- 

 vinces, 169 ; on the number of 

 species of man, 174; on the court- 

 ship of the land-snails, 262 ; on the 

 brightness of the colours of male 

 fishes during the breeding season, 

 340 ; on the frontal protuberance 

 of the males of Geophagus and 

 Ciclda, 340, 345 ; male fishes 

 hatching ova in their mouths, 345 ; 

 sexual differences in colour of chro* 

 mids, 345 ; on the slight sexual 

 differences of the South Americans, 

 561 ; on the tattooing of the Ama- 

 zonian Indians, 576. 



Ave, in relation to the transmissioc 

 of characters in birds, 463 ; va- 

 riation in accordance with, in birds, 

 484. 



Agelceus phceniceus, 225, 416. 



Ageronia feronia, noise produced ly. 

 307. 



Agrion, dimorphism in. 290 



