734 INDEX. 



Consumption, liability of Cebus AzarcB to, 7; connection bet^eeu 

 complexion and, 221. 



Convergence of characters, 201. 



Cooing of pigeons and doves, 425. 



Cook, Capt. , on the nobles of the Sandwich. Islands, 669. 



Cope, E. D., on the Dinosauria, 180. 



Cophotis ceylanica, sexual differences of, 402, 405. 



Copris, 336; copris isidis, sexual differences of, 335; copris lunaris, 

 stridulation of, 343. 



Corals, bright colors of, 295. 



Coral-snakes, 400. 



Cordylus, sexual difference of color in a species of, 405. 



Corfu, habits of the chaffinch in, 281. 



Cornelias, on the proportion of the sexes in Lucanus Cervus, 286. 



Corpora Wolffina, 183; agreement of, with the kidneys of fishes, 10. 



Correlated variation, 49. 



Correlation, influence of, in the production of races, 225. 



Corse, on the mode of fighting of the elephant, 585. 



Corvus coro?ie, 463 ; Cvrvus gracuius, red beak of, 559 ; Corous 

 pica, nuptial assembly of, 461. 



Coryddlis cornutus, large jaws of the male, 312. 



Cosmetornis, 457, 526. 



Cosmetornis vexittarius, elongation of wing-feathers in, 436, 457. 



Cotingidae, sexual differences in, 248; coloration of the sexes of, 

 523; resemblance of the females of distinct species of, 535. 



Coitus scorpius, sexual differences in, 382. 



Coulter, Dr., on the Californian Indians, 291. 



Counting, origin of, 163; limited power of, in primeval man, 205. 



Courage, variability of, in the same species, 78; universal high 

 appreciation of, 139; importance of, 147; characteristic of men, 644. 



Courtship, greater eagerness of males in, 250; of fishes, 376, 386; 

 of birds, 417, 426, 460. 



Cow, winter change of color, 619. 



Crab, devil, 304; crab, shore, habits of, 303. 



Crabro cribraiius, dilated tibiae of the male, 313. 



Crabs, proportions of the sexes in, 288. 



Cranz, on the inheritance of dexterity in seal -catch ing, 37. 



Crawfurd, on the number of species of man, 199. 



Crenilabrus massa and C. melops, nests, built by, 391. 



Crest, origin of, in Polish fowls, 261. 



Crests, of birds, difference of, in the sexes, 533; dorsal hairy, of 

 mammals, 606. 



Cricket, field, striduktion of the, 320, 321; pugnacity of male, 327; 

 cricket, house, stndulations of the, 321. 



Crickets, sexual U3erences in, 328. 



Crinoids, complexity of, 103. 



Crioceridse, stridulai>a of the, 342. 



Croaking of frogs, 397. 



Crocodiles, musky odor of, during the breeding season, 398. 



Crocodilia, 398. 



Crossbills, characters of young, 529. 



Crosses in man, 196. 



Crossing of races, effects of the, 218. 



