INDEX 



479 



Chipmunks of California, classifica- 

 tion of, 117; (illus.), 118. 



Chromosomes, defined, 253. 



Chrysopa, eggs of (illus.), 226. 



Cicada, variation in tibial spines of, 

 134; septendecem, variation in 

 tibial spines of, 136. 



Cladonotus humbertianus (illus.), 

 409. 



Classes of animals, 35. 



Classification, determined by homol- 

 ogies, 173; of animals, 33. 



Cleavage, 228. 



Coccidium lithobii, life cycle of 

 (illus.), 352. 



Coccidium oviforme (illus.), 216. 



Cock, white-crested black Polish 

 (illus.), 81. 



Cockerel, silver-laced Wyandotte 

 (illus.), 82. 



Cockroach, egg case of (illus.), 340; 

 showing variation in number of 

 tarsal segments (illus.), 149. 



Color, in animals, 398; in organisms, 

 how produced, 403; in protec- 

 tive resemblance, 400; in sexual 

 selection, 400; uses of, 399. 



Coloration, directive, 419. 



Colors, warning, 416; table of insect, 

 405. 



Commensalism, 370. 



Communism, 369, 385; advantages 

 of, 397; basis and origin of, 395. 



Conditions, primary, of life, 38. 



Conjugation, of nociiluca (illus.), 

 220; of Vorticella nebulifera 

 (illus.), 221. 



Conklin, E. G., 70, 199, 201, 203. 



Convergence of characters, 204. 



Cope, E. D., 55, 197. 



Cordyceps, growing on a caterpillar 

 (illus.), 363. 



Corn, showing results of hybridiza- 

 tion, 194. 



Correns, E., 192. 



Coues, E., 24, 119. 



Crab, fiddler (illus.), 38; hermit, 



commensal life with polyps 

 (illus.), 373; (illus.), 374; meta- 

 morphosis of (illus.), 238. 



Cramer, F., 11. 



Cricket, mole (illus.), 344; (illus.), 

 345. 



Crotalus adamanteus (illus.), 16. 



Crustacea and their larva (illus.), 

 365; parasitic, 358. 



Cryptomeria japonica, atavistic vari- 

 ation of (illus.), 160. 



Cucumaria sp. (illus.), 19. 



Cucumbers, sea (illus.), 19. 



Cuenot, L., 185, 191, 192. 



Cunningham, J. T., 201. 



Cyanocitta cristata, nestlings of 

 (illus.), 442. 



Cycle of life, 240. 



Cyclops, maturation in, 272; matura- 

 tion of eggs of (illus.), 263. 



Cypselurus (illus.), 335. 



Cyrtophyllus crepitans (illus.), 401. 



Dall, W., 197, 205. 



Darbishire, W., 192. 



Darwin, C., 9, 22, 48, 60, 63, 67, 68, 

 71, 76, 80, 137, 141, 196, 250, 

 311, 466, 467, 468. 



Darwinism, defined, 48. 



Davenport, C. B., 192. 



Death, 241. 



Decapod, showing extraordinary re- 

 generation (illus.), 147. 



Deer, head of, showing variation in 

 horns (illus.), 146; horns of, 

 interlocked (illus.), 438. 



Degeneration, 347; by quiescence, 

 363. 



Delage, Y., 29, 46, 252. 



Descent, theory of, 10; theories ot 

 control of, 108. 



Determinants of Weismann, 251. 



Development, 224; divergence in, 

 230; embryonic, 227; experi- 

 mental, 244; first stages in 

 embryonic (ilius.), 227; of 

 flounder (illus.), 240; of Mon- 



