702 



Index 



Digger wasp, 531 



Dihybrid cross, 303-304 



Dilation, 206 



Dimetrodon, 626 



Dinoflagellate, 356-357 



Dinornithiformes, 625 



Dinosaur, 604, 613. 614, 615. 628 



Dioctophyme. 462 



Dioecious, 253 



Diphycercal tail, 587 



Diphyletic theory, 646 _ 



Diphyllobothrium (see Dibothnoceph- 



alus), 418-419 

 Dipleurula, 544, 554, 560, 646, 647 

 Diploblastic, 384 

 Diplodinium, 373 

 Diplodocus, 614 

 Diploid, 272, 273 

 Diplopoda, 489, 516 

 Diplura, 538 

 Dipnoi, 583, 591 

 Diptera, 540 



Disaccharide, 31, 139, 140 

 Discocephali. 590 

 Discoglossidae, 596 

 Discolia. 531 

 Discorbis, 361 

 Disease, 160 



Distribution of animals, 337-341 

 Divergence, 336 

 Division, cell, 270-275 

 equational, 275 

 reductional, 275 

 Dodson fly, 539 

 Dodo bird. 340 



Dog, 77, 90, 104, 144. 210. 214, 220, 

 231, 238, 630 

 chromosome number, 272 

 gestation period, 292 

 parasite, 420. 431. 434. 516 

 reproduction, 257, 263 

 Dogfish shark (see Squalus), 83, 567, 



576-579, 580 

 Dolphin. 630. 638 

 Dominant. 298 

 Donkey, 151 

 Donor, 181 



Dorsal blood vessel, 448 

 lip, 282, 294 

 lumbar vein, 67 

 nerve, 196. 203, 204 

 cord, 192, 193, 196 

 pore, 455 

 Dove. 132. 621, 625 

 Draco, 608 

 Dracunculus, 437-438 

 Dragonfly. 538 

 Dreams, 211 

 Drone, 534 



Drosophila, chromosomal map, 314 

 chromosome number, 272 

 classification, 540 

 cytoplasmic inheritance, 315 

 experimental animal, 302 

 gene mutations, 311 

 giant chromosomes, 314-315 

 inheritance in, 307 

 larva, 314 



linked genes, 313-314 

 mitosis, 272 

 sex chromosomes, 308 

 Duck, 618. 619, 620. 623, 624, 625 

 Duckbill dinosaur, 613, 614 

 Duck-billed platypus, 627, 629, 631, 632 

 Duct, common bile, 137 

 glands, 225 

 lymphatic, 169, 183 

 naso-lacrimal, 216 

 pancreatic, 137, 237 

 thoracic, 169, 183 

 urinary, 185 

 Ductless glands (see Endocrme 



glands) 

 Ductus arteriosus, 164, 166 

 Dugesia, 404-408 

 Dugong, 630, 632, 639 

 Dune succession, 659 

 Duodenum, 61. 62. 134. 142 

 Dura mater, 71, 202, 203 

 Dwarf, 230, 244, 318 



Eagle, 620, 624, 625 

 Ear, frog, 56. 71 

 mammal. 220-224 

 ossicle, 108, 111 

 Eardrum (see tympanic membrane), 



220, 221, 222. 526 

 Earth pig (see aardvark), 630. 632, 



638-639 

 Earthworm (see also Lumbricus) 

 circulatory system. 159 

 classification, 45. 348. 446 

 as intermediate host, 461 

 nervous system. 192 

 respiration, 147, 148 

 Earwig, 538 

 Ecdysis, 487, 488 

 Echinarachnius. 544, 551, 553 

 Echinococcus, 419-420 

 Echinodermata, 45. 541-558. 646. 647 

 characteristics, 542-544 

 classes, 544 

 classification. 348 

 Echinoidea. 544, 550-551 

 Echiuroidea, 348. 462, 463-465 

 Echiurus. 348. 462, 464 

 Ecology, 21, 648-671 



