Index 



701 



Cuticle, 424, 447, 487 

 Cuticulin, 487 

 Cuttlefish (see Sepia), 481 

 Cycle, abundance, 668 



menstrual, 262-263 



ovarian, 263 



uterine, 263 

 Cj'cloid scale, 84, 587 

 Cyclops, 438, 506 

 Cyclosis, 369 



Cyclostomata, 46, 568, 570, 571 

 Cynocephalus, 78, 630, 632, 634 

 Cynognathus, 626 

 Cynomys, 630 

 Cypraea, 476 

 Cyprinus, 567, 590 

 Cypris, 506, 508 

 Cyst, of clam larva, 475-476 



of hydra, 389 



of protozoan, 351 

 Cysticercoid, 420 



Cysticercus (see bladder worm), 418 

 Cytology, 21 

 Cytopharynx, 353, 369 

 Cytoplasm, 36, 267, 268-269 

 Cytoplasmic inheritance, 315, 352, 372 

 Cytostome, 353, 369 



D 



Daddy longlegs, 489, 514, 515 



Damsel fly, 538 



Daphnia, 489, 506 



Dart, 641 



Darwin, Charles, 320, 321, 322, 326, 



327-328, 337, 461, 668-669 

 Darwin, Erasmus, 322, 326 

 Dasyatis, 576, 580, 581 

 Dasypus, 630, 632 

 Daughter chromosomes, 271 

 Deafness, 221 

 Decapoda, 507 

 Deciduous forest, temperate, 651, 653- 



654 

 tropical, 651, 656 

 Deer, 81, 85, 111, 132, 630, 640, 670 

 Deer nwuse (see Peromyscus), 632, 



636 

 Defecation, 144 

 Defense against disease, 160 

 Delphinus, 630 

 Demospongiae, 381 

 Dendrite, 194, 195, 203 

 Dendronotus, 476 

 Dendrostoma, 462, 465 

 Dentalium, 466. 468, 469, 476 

 Dentine, 83, 86, 87 

 Depolarization, 208, 209 

 Depression, 390 

 Dermacentor, 515, 516 



Dermal bones, 108 

 branchiae, 543, 545, 546 

 scale, 100 

 Dermaptera, 538 

 Dermis, of frog, 54, 55 



of mammal, 80, 82 

 Dermochelys, 606 

 Dermoptera, 630, 634 

 Desert, 190, 651, 654-655 

 Deuterostomia, 646 

 Devil ray, 576, 580, 581 

 Devonian period, 343, 567, 568, 579, 



594 

 De Vries, 311 

 Diabetes insipidus, 248 



mellitus, 238, 239 

 Diadectes, 601, 602, 603 

 Diamond-back terrapin, 605 

 Diapause, 520, 521 

 Diaphragm, muscle, 128, 154, 155 



iris, 216, 217 

 Diaphysis, 98 

 Diarthrosis, 113 

 Diastema, 88 

 Diastole, 172, 174, 175_ 

 Diastolic pressure, 175 

 Diatryma, 625 

 Diatrymiformes, 625 

 Dibothriocephalus, 418-419 

 Didelphis, 292, 628, 629, 632, 633 

 Didinium, 373 

 Diencephalon, 69, 196, 199 

 Diftlugia, 361 

 Dififusion, 34, 36, 269 

 Digenea, 409 



Digenetic trematodes, 409 

 Digestion, 128 

 Digestive glands, control, 139-142 



gastric, 135, 141 



intestinal, 136 



juice, 137, 138, 140, 143 



liver, 137, 141 



pancreas, 137, 141, 142 



salivary, 131 

 hormones, 141, 142, 248 

 system, 40, 127-146 



amphioxus, 565 



clam, 473 



crayfish, 497 



earthworm, 455-457 



frog, 61-62 



insect, 523, 525 



lamprey, 571 



mammal, 127-146 



Neanthes, 452 



Perca, 585 



planaria, 405 



Squalus, 577 



starfish, 547 

 tract, 128-137 



