594 



INDEX 



Crinoidea, 201, 205-206, 513 

 Crocodiles, 334, 380, 388-389, 495 



heart, 379 

 Crocodilia, 380, 388 

 Cro-Magnon race, 424, 425 

 Crop, 230, 232, 240, 277, 322, 393, 394 

 Crossbill, beak, 399 

 Crossbreeding, 536 



Cross-fertilization, 106, 141, 162, 219, 246, 311 

 Crossing over, 540 

 Crossopterygii, 344, 362 

 Crotalus confluentes, skull, 386 

 Crustacea, 260, 304, 305 

 Crustaceans, 250-267, 437, 440, 462, 466, 480, 



494, 495, 512, 513 

 Crypiobranchus, 365 

 Cryptopsaras couesii, 367 

 Crystalline cone, 255 

 Crystalline style, 221 

 Crystalloids, 12 

 Ctenoid scales, 347, 348 

 Ctenophora, 154, 644, 547 

 Ctenophores, lo^-lSG, 436, 438, 441, 443, 444, 



449, 450, 461, 462, 467 

 Cuckoos, 403, 507 

 Cucumaria planci, 205 

 Culex, 89, 287 



Cultivation, modifications, 518 

 Curassows, 506 

 Currents, 55, 479, 500 

 Cutaneoiis artery, 361 

 Cutaneous sense organs, 328-330 

 Cuticle, 69, 79, 85, 135, 136 



(See also Skin) 

 Cuticula, 98, 164, 165, 185, 229, 231, 268, 304, 437 

 Cuttlefish, 222, 223, 438, 513 



eye, 223 

 Cutworms, 289 

 Cuvier, 552, 653 

 Cuvierian organs, 205 

 Cyanogen theory, 26 

 Cycles, chemical, 458-460 



food, 480 



life, 43-44, 432-433 

 Cycloid scales, 347, 348 

 Cyclops, 263 

 Cyclostomata, 334, 335 

 Cyclostomes, 335-337 

 Cynodonts, 411 

 Cypris, 263 

 Cypris, 497 

 Cypselurus, tail, 349 

 Cysticercus, 173-174 

 Cystoids, 513 



Cytoplasm, 28, 30, 48, 49, 63, 68-70, 84, 100, 

 109, 110, 113, 114, 117-119 



D 



Daddy longlegs, 303 



Damsel flies, 289 



Danaus archippus, 281 



Daphnia pulex, 263 



Darwin, Charles, 237, 424, 517, 618, 521, 629 



Darwin, Erasmus, 517 



Darwinism, 517 

 Dasypus novemcinctus, 414 

 Day and night rhythms, 482 

 Deafness, heredity, 536 

 Dealated ant, 294 

 Dealated termite, 283 

 Death, 23, 430 

 Decapods, 260 

 Deep-sea fishes, 357 

 Deer, 416, 506, 507 



foot bones, 415 



Virginia, 509 

 Defective genes, 636, 537 

 Degeneration, 186, 200, 312, 314, 543 

 Delamination, 449 

 Demospongiae, 128 

 Dendrites, 100, 101, 238 

 Dendron, 101 



(See also Dendrite) 

 Dendrostoma alutaceum, 247 

 Dentalium pretiosum, 221 

 Dentine, 318, 407, 408 

 Dentition, 407 



Dermal gills (see Dermobranchiae) 

 Dermal layer, 130, 436 

 Dermal scales, 367, 406 

 Dermis, 318, 359, 406, 437 

 Dermobranchiae, 193, 196 

 Desert faunas, 482, 484 

 Desiccation, 187 

 Desmognathus, 365 

 Determination of sex, 537-539 

 Determiners, 527 

 Development, ascaris, 178-179 



butterfly, 281 



fish, 355-366 



frog, 371-374 



GoTdius, 181 



hookworm, 179-180 



locust, 280 



mammal, 418-421 



mosquito, 288 



reptiles and birds, 376-378 



shrimp, 265-206 



Trichinella, 180 



tunicate, 311-312 



(See also Life history) 

 Devil fish, 222, 223 

 Devonian period, 344, 362, 511, 515 

 DeVries, Hugo, 522 

 Diabetes, 464 



inheritance, 537 

 Dialysis, 12 

 Dialyzers, 12 

 Diaphragm, 322, 389, 408 

 Diastrophus nebulosus, gall, 286 

 Didelphia, 411 

 Diecious animals, 105, 178, 186, 189, 195, 213, 



219, 225, 243, 264, 270, 315, 333, 443 

 Diencephalon, 328, 337, 340, 370, 387 

 Differentiation, 85, 93, 128, 430, 432. 447. 464 

 Difflugia urceolata, 81 

 Diffuse nervous system, 414 



