422 
CORRELATED. 
INDEX. 
CURIOSITY. 
Correlated variation, i. 130. 
Correlation, influence of, in the 
production of races, i. 247. 
Corse, on the inode of fighting of 
the elephant, ii. 257. 
Corpus corona, ii. 104. 
Conus graculus, red beak of, ii. 227. 
Corvus pica, nuptial assembly of, ii. 
102 . 
Cori/dalis cormitus, large jaws of the 
male, i. 342. 
Cosmetornis, ii. 181. 
Cosmetornis vex Marins, elongation of 
wing-feathers in, ii. 73, 97. 
Cotingii>.<k, sexual differences in, i, 
269 ; coloration of the sexes of, ii. 
177 ; resemblance of the females of 
distinct species of, ii. 192. 
Coitus scorpius, sexual differences in, 
ii. 9. 
Counting, origin of, i. 181; limited 
power of, in primeval man, i. 234. 
Courage, variability 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, 1 00. 
Cow, winter change of the, ii. 299. 
Crab, devil, i, 332. 
Crab, shore, habits of, i. 331. 
Crabro cribrarius, dilated tibia; of the 
male, i. 343 . 
Crabs, proportions of the sexes in, i. 
Cranz, on the inheritance of dexte- 
rity in seal-catching, i. 117 . 
Craweurd, on the number of species 
of man, i. 22 G. 
Crenilubrus mussa and C. melons, 
nests built by, ii. 19 . 
Crist, 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-, stridulatiou of the i. 
353 ; pugnacity of male, i. 360. ’ 
Cricket, house-, stridulatiou of the 
i. 352, 354. 
Crickets, sexual differences in, i. 361. 
CrtoceriDxE, stridulatiou of the, i. 
'-!70 
Crinoids, complexity of, i. 61. 
Croaking of frogs, ii. 27. 
Crocodiles, musky odour of, during 
the breeding season, ii. 20 . 
Crocodiua, ii. 28. 
Crossbills, characters of young, ii. 
184. 5 
Crosses in man, i. 225. 
Crossing of races, effects of the, i. 
241. 
Crossoptilvn aurif um, ii. 93 , 166, 196 ; 
adornment of both sexes of, i. 290 ; 
sexes alike in, ii. 178. 
Crotch, G. R., on the stridulatiou of 
beetles, i. 379, 382 ; on the stridu- 
hition of IfeliopatUes, i. 383 ; on 
the stridulatiou of Acalk.*, 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 litnhs by female, 
i. 255 ; prehensile feet and antenn# 
of, i. 256; male, more active than 
female, i. 272 ; parthenogenesis in? 
i. 315; secondary sex mil character 
of, i. 328 ; auditory hairs of, ii. 333 . 
Crystal worn in the lower-lip bysom e 
Central African women, ii. 341. 
Cuckoo fowls, i. 294. 
CtnaciDJE, i. 254, 349. 
Cullen, Dr., on the throat-pouch 
the male bustard, ii. 58. 
Cultivation of plants, probable ori- 
gin of* i. 167. 
Cupplks, Mr., on the numerical p 1 ’ 0 ' 
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* 
CURCITLIONIDAC, sexual difference 
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. 
