422 



CORRELATED. 



INDEX. 



CURIOSITY. 



Correlated variation, i. 130. 

 Correlation, influence of, in tlie 



production of races, i. 247. 

 Corse, on the mode of fighting of 



the elephant, ii. 257. 

 Corvus corone, ii. 10-t. 

 C'orvus graculus, red beak of, ii. 227. 

 Corvus pica, nuptial assembly of, ii. 



102. 

 Corydalis cornutus, large jaws of the 



male, i. 342. 

 Cosmetornis, ii. 181. 

 Cosmetornis vexillarius, elongation of 



wing-feathers in, ii. 73, 97. 

 COTINGID^, sexual differences in, i. 

 269 ; coloration of the sexes of, ii. 

 177 ; resemblance of the females of 

 distinct species of, ii. 192. 

 Cottus scorpius, sexual differences in, 



ii. 9. 

 Counting, origin of, i. 181 ; limited 

 power of, in primeval man, i. 234, 

 Courage, A^ariability of, in the same 

 species, i. 40 ; universal high appre- 

 ciation of, i. 95 ; importance of, i. 

 162 ; a characteristic of men, ii. 328. 

 Courtship, greater eagerness of 

 males in, i. 272 ; of fishes, ii. 2 ; 

 of birds, ii. 50, 100. 

 Cow, winter change of the, ii. 299. 

 Crab, devil, i. 332. 

 Crab, shore, habits of, i. 331. 

 Crabro crihrarius, dilated tibiae of the 



male, i. 343. 

 Crabs, proportions of the sexes in, i. 



315. 

 Cranz, on the inheritance of dexte- 

 rity in seal-catching, i. 117. 

 Crawfurd, on the number of species 



of man, i. 226. 

 Crenilahrus massa and C. melops, 



nests built by, ii. 19. 

 Crest, origin of, in Polish fowls, i. 



284. 

 Crests, of birds, difference of, in the 

 sexes, ii. 189; dorsal hairy, of 

 mammals, ii. 282. 

 Cricket, field-, stridulation of the, i. 



353 ; pugnacity of male, i. 360. 

 Cricket, house-, stridulation of the, 



i. 352, 354. 

 Crickets, sexual differences in, i. 361. 

 Criocerid^, stridulation of the, i. 

 379. 



Crinoids, complexity of, i. 61. 

 Croaking of frogs, ii. 27. 

 Crocodiles, musky odour of, during 



the breeding season, ii. 29. 

 Crocodilia, ii. 28. 

 Crossbills, characters of young, ii. 



184. 

 Crosses in man, i. 225. 

 Crossing of races, effects of the, i. 



241. 

 Crossoptilon cmritiim, ii. 93, 166, 196 ; 

 adornment of both sexes of, i. 290 ; 

 sexes alike in, ii. 178. 

 Crotch, G. E., on the stridulation of 

 beetles, i. 379, 382 ; on the stridu- 

 lation of Ileliopathes, i. 383 ; on 

 the stridulation of Acalles, i. 384. 

 Crow Indians, long hair of the, ii. 



348. 

 Crow, young of the, ii. 209. 

 Crows, ii. 226 ; vocal organs of the, 



ii. 55 ; living in triplets, ii. 106. 

 Crows, carrion, new mates found by, 



ii. 104. 

 Crows, Indian, feeding their blind 



companions, i. 77. 



Cruelty of savages to animals, i. 94. 



Crustacea, amphipod, males sexually 



mature while young, ii. 215 ; 



parasitic, loss of limbs by female, 



i. 255 ; prehensile feet and antennae 



of, i. 256 ; male, more active than 



female, i. 272 ; parthenogenesis in, 



i. 315 : secondarv sexual characters 



of, i. 328 ; auditory hairs of, ii. 333. 



Crystal worn in the lower lip by some 



Central African women, ii. 341. 

 Cuckoo fowls, i. 294. 

 Culicid^, i. 254, 349. 

 CuLLEN, Dr., on the throat-pouch of 



the male bustard, ii. 58. 

 Cultivation of plants, probable ori- 

 gin of, i. 167. 

 CUPPLES, Mr., on the numerical pro- 

 portion of the sexes in dogs, sheep, 

 and cattle, i. 304, 305 ; on the 

 Scotch deerhound, ii. 261 ; on sex- 

 ual preference in dogs, ii. 271, 272. 

 CURCULIONID^, sexual difference in 

 length of snout in some, i. 255 ; 

 hornlike processes in male, i. 374 ; 

 musical, i. 378, 379. 

 Curiosity, manifestations of, by ani- 

 mals, i. 42. 



