562 



INDEX 



Coelenterata, 17, 18, 54-70; characteris- 

 tics, 54; economic importance, 69-70 



Coker, 368 



Cold spots, 476 



Coleoptera, 194 



Cole, 141 



Collar cells, 49, 53 



Collared peccary, 401 



Collateral branches, 473 



Colloids, 8, 435 



Colloid goitre, 445 



Colonies, 483 



Coloration of fishes, 253 



Color blindness, 474, 535 



Color in fossil butterflies, 188 



Color of birds, 356 



Color resemblance, 488 



Colpoda cucullulus, 33 



Colubrinae, 315 



Colugo, 377 



Columbae, 344 



Columba livia, 494 



Columnar epithelium, 425 



Commensalism, 482 



Commercial sponge, 48 



Common toad, 270, 271 



Communities, 489 



Comparative anatomy of the portal sys- 

 tems, 454 



Comparison of vertebrates and inver- 

 tebrates, 209 



Compound eyes of Crayfish, 168 



Conditioned response, 118 



Conepatl, 386 



Congo eel, 267 



Conjugation, earthworm, 112 



Conjugation in paramecium, 33, 34 



Conldin, 152, 508 



Connective tissues, 426 



Contact-odor sense of Crayfish, 167 



Coordination, 479 



Copeland, 118, 158 



Copepoda, 171 



Copernicus, 511 



Copper, 438 



Copperhead snake, 321, 322 



Corals, 64, 65, 79 



Coral islands, formation of, 65 



Coral reef, 6s 



Coral snake, 319, 320 



Cormorants, 339 



Corrodentia, 179 



Cort, 93 



Cortex, cerebral, 469 



Cotton-boll weevil, 196 



Cotton mouth moccasin, 321, 322 



Cotton spinners, 137 



Cottontail rabbits, 395 



Cotylosauria, 330 



Cowdry, 6 



Coyote or prairie wolf, 388 



Crampton, 517 



Crane fly, 192 



Craniata, 221 



Crepidula, 152, 508 



Crested newt, 267 



Cretinism, 445 



Crew, F. A. E., 536 



Cristatella, statoblast of, 127 



Cristispira, 29 



Crocodilia, 309 



Cro-Magnon man, 416 



Crop, 107 



Crop, leech, 116 



Crop of birds, 359 



Crop rotation, 200 



Crossing over, 538 



Crossopterygii, 240 



Cross-section Amphioxus, 213 



Crotalus cerastes, 323 



Crow, 352 



Crustacea, 165, 170 



Cryptobranchus, 294 



Cryptobranchus, arteries, 294 



Cryptobranchus, veins, 293 



Cryptocotyle lingua, 78 



Crystalline style, 144 



Ctenoid scales, 234 



Ctenophora, 66 



Cuban boa, 315 



Cuban toad, 273 



Cubical epithelium, 425 



Cuckoos, 349 



Culex, and bird malaria, 189 



Culicidae, 189, 190, 191 



Curtis, 82 



