700 



INDEX 



Dihybnds, 580 

 Dimorphism, 120 

 seasonal, 446 

 sexual, 446 

 Dinobryon, 74, 75 

 Dinoflagellina, 49 

 Dinophilus, 171, 196 

 Dinornithiformes, 458 

 Dinosaur, 426, 427, 428 

 Dioctophyma, 155, 161 

 Dioctophymoidea, 161 

 Dioecious, 79, 123, 185 

 Diomedea, 461 

 Diphycercal tail, 587 

 Diphyllobothrium, 147 

 Diploid chromosomes, 575 

 Diplopoda, 198,225,227 

 Dippers, 462 

 Diptera, 229, 242, 256, 258, 259, 



260, 261, 262, 265 

 Disaccharides, 519 

 Discocephalida, 395 

 Discoglossidae, 397 

 Discoidal cleavage, 82 

 Discontinuous distribution, 222, 



649 

 Discovery of cell, 29 

 Diseases, inheritance of, 596 

 Dispersion, 649 

 Distribution, continuous, 649 



of digested food, 531 



discontinuous, 649 



of fossil remains, animals, 617 



geographic, 615 



of major vertebrate groups, 616 



methods of, 649 



throughout geologic time, 616 

 Diurnal birds, 453 

 Divergent evolution, 610 

 Diverticulum, 192 

 Diving beetles, 264 

 Division, 574 



equational, 574 



reductional, 574 



social insects, 251 



somatic cells, 79, 92 



transverse, 187 

 Dog ascarid, 154 

 Dogfish, 324 

 Dogfish shark, 368-377, 372 



circulatory system, 371 



digestive system, 570 



excretory system, 373, 374 



external anatomy, 368 



internal anatomy, 369 



nervous system, 372 



relations to man, 375 



relations to other groups, 375 



respiratory system, 371 



sense organs, 372 



skeleton, 370 



urogenital system, 373, 374 



vitamins, 376 

 Dolichoglossus, 321 



Dolphin, 486 

 Domesticated animals, 612 



birds, 456 



mammals, 491 



plants, 612 

 Dominance, ecologic, 644 



incomplete, 587 



lack of, 587, 588 



partial, 587 

 Dominants, 575 

 Donor tissues, 568 

 Dorsal, aorta, 319, 336, 338, 532, 

 533 



fin, 316, 318, 368 



giant fibers, 178 



nerve, 152,319,352 



pores, 173 



vessel, 177 

 Dorsalis artery, 336 



scapulae, 347 

 Dorsolateral fold, 327 

 Dorsolumbar vein, 337, 338 

 Dorsoventral muscles, 136 

 Double sugars, 519 

 Dourine, 74 

 Dove, 317, 461 

 Down, 435 

 Draco, 430 



Dracunculus, 157, 159 

 Dragonfiy, 250, 260 



metamorphosis, 240, 241 

 Dragon lizard of Komodo, 415 

 Drone bee, 251 

 Drosophila, 584, 623 



chromosomes, 584 



mutations, 623 

 Drosophilidae, 265 

 Drumming, 444 

 Duck, 446,461 

 Duckbill, 480 

 Duck-billed platypus, 495 

 Ducklike birds, 452 

 Duct of Cuvier, 369 

 Duct glands, 540 

 Ductless glands, 540 

 Dugesia, 134, 135, 147 

 Dugesiella, 111 

 Dujardin, 29 

 Dungbeetle, 250 

 Duodenum, 331, 553 

 Dura mater, 354 

 Dytiscidae, 264 



E 



Eagles, 453, 455,461 

 Ear, 355, 500, 549 



external, 355, 549 



internal, 355, 549 



middle, 355, 549 

 Eardrum, 327, 355 

 Earthworm, 171-183, 607 



(see Lumbricus terrestris) 



giant, 189 



Earwig, 229 

 Eastern newt, 401 

 Ecanthropus, 626 

 Echidna, 481 

 Echinarachnius, 310, 313 

 Echinocardium, 310 

 Echinococcus, 146, 147 

 Echinodera, 168 

 Echinoderes, 168, 169 

 Echinodermata, 4, 303-314. 

 607 

 classification, 313 

 origin and relations, 311 

 parthenogenesis, artificial, 311 

 relations to man, 312 

 representatives, 304 

 Echinoidea, 304, 313 

 Ecologic dominance, 644 

 Ecologic environment, 632, 642, 

 644 

 abyssal, 642 

 Alpine, 642 

 cave, 642 

 forest, 642 

 fresh water, 631, 642, 644, 



645 

 island, 642 

 littoral, 642 

 marine, 632, 642, 645 

 pelagic, 642 

 plateau, 642 

 prairie, 642 

 seashore, 642 

 symbiotic, 632, 636 

 terrestrial, 632, 646 

 tidal, 642 

 periodicity, 644 

 daily rhythms, 644 

 seasonal rhythms, 644 

 pyramid, 636, 637 

 stratification, 644 

 succession, 642, 643 

 animals, 643 

 environment, 643 

 Ecology, 10,628-651 

 communities, 633 

 environment factors, 629 

 biotic, 629, 634, 641 

 chemical, 629, 633 

 limiting, 629, 635 

 physical, 629-632 

 habitat, 629, 633 

 populations, 633 

 principles of biotic communities, 



641 

 symbiosis, 636 



commensalism, 637 

 mutualism, 638 

 parasitism, 639 

 Economic entomology, 260 

 Ecosystems, 633 



fresh-water pond, 635 

 Ectoderm, 83, 115, 356,557,565 

 primitive, 115 



