INDEX 



705 



Gonangium, 118, 119 

 Gonioncmus, 118, 127 

 Gonotheca, 118, 119 

 Gonozooid, 120 

 Gonyaulax, 47 

 Goose, barnacle. 199, 216 



fish, 379, 391, 395 

 Gooselike birds, 461 

 Gopher, 485 



tortoise, 411 

 Gopherus, 411 

 Gordiacea, 162 

 GoTgonia. 128 

 Gorilla, 489, 490 

 Gossamer wings, 265 

 Graafian follicles, 553, 554 

 Gracilis, 467, 505, 506 



major, 347, 348,350 



minor, 347,348,350 

 Graf ting, Hydrd, 117 

 Grasping birds, 446 

 Grasshopper, 230-239, 260, 263 



abdomen, 231, 233 



antenna, 231, 232 



circulatory system, 255, 236 



digestive system, 235, 236 



embr\'onic development and 

 growth, 239 



excretion, 237 



exoskeleton, 230 



external anatomy, 230 



eyes, 231, 232 



head, 230, 231,232 



interna] anatomy, 234, 236 



legs, 231, 233 



metamorphosis, 240, 241 



mouthparts, 230, 232, 236 



muscular system, 235 



nervous system, 237, 238 



physiology, 234 



reproductive system, 238 



respiratory system, 235 



thorax, 231 



trachea, 237 



sense organs, 238 

 Grave's disease, 552 

 Gray, crescent, 357 



matter, brain, 352, 546 



whale, 486 

 Great anteater, 485 



auk, 433, 461 



barrier reef, 124 



blue heron, 461 



hornedowl, 453, 454,461 



tinamous, 461 

 Greater siren, 404 

 Grebes, 452, 461 

 Green anole, 415, 430 



glands, 202, 208 



lizard, 450 



turtle, 413, 429 

 Gregarinida, 52, 53 

 Grinding teeth, 474, 475 

 Grizzly bear, 493 



Ground beetle, 255, 264 



squirrel, 485 

 Grouse, 461 

 Growth, 5 

 Grub, cattle, 259 

 Gruiformcs, 433, 461 

 Gryllidae, 263 

 Guanine, 388 

 Guano, 459 

 Guard hairs, 473 

 Guinea fowl, 456 



worm, 157, 1 59 

 Gull, 452, 460, 461 

 Gullet, 122, 123 

 Gurnard, 379, 395 

 Gymnamocbac, 39 

 Gymnodinium, 46 

 Gvmnophiona, 596 

 Gyrinidae, 248, 264 



H 



Habit formation, 215, 557 

 Habitat, 5-7, 629, 633 



fresh-water, 5 



marine, 631, 632 



parasitic, 6 



salt water, 5 



terrestrial, 6 

 Hackled-band weavers, 278 

 Haddock, 394, 395 

 Hadromerina, 101 

 Haemosporidia, 52, 53 

 Hagfishes, 365 

 Hags, 324 

 Hair, 329 



bulb, 329 



muscle, 329 



papilla, 329 



root, 329 

 Hakes, 394 

 Haliaeetus, 461 

 Halibut, 394, 395 

 Ilalichondria, 101 

 Halichondrina, 101 

 Haliclomi, 101 

 Hallux, 438 

 Halteres, 244 

 Hanim, 653 

 Hammer, 549 

 Hammerhead shark, 375 

 Hand, 546 



Haploid chromosomes, 575 

 Haplosclcrina, 101 

 Haplosporidia, 53 

 Haplosporidium, 53 

 Hard-shell clam, 282 

 Hares, 496 

 Har\'estman, 268 

 Harvey, 533,653 

 Hatching, bird's egg, 442 



Hvdra, 116 

 Hawk, 433, 446,461 



moth, 264 



Heart, bird, 439 



chordate embr)'o, 565 



crayfish, 202, 208 



earthworm, 172 



frog, 335, 336 



grasshopper, 235, 236 



man, 330, 530, 532 



Plumatella, 167 

 Heel, 501 



Heidelberg man, 625 

 Heliciiia, 301 

 Heliozoa, 41 

 Udix, 301 



Hellbenders, 397, 404 

 Helodcrma, 430 

 Ilelodermatidae, 407, 450 

 Hemachatus, 424 

 Hemal spine, 381 

 Hemichordata, 315, 520-321 

 Hemiptera, 229, 241, 246, 250, 



258,260,261,262,263 

 Hemocoel, 224, 235 

 Hemocyanin, 206 

 Hemoglobin, 176, 335, 526 

 Hemophilia, 593, 596 

 Hen, 456 

 Heparin, 518 

 Hepatic artery, 338, 533 



ceca, 305 



duct, 331 



portal svstem, 337, 371 



portal vein, 337, 338, 532,533 



veins, 337, 338, 532, 533 

 Herbivorous animals, 512 



mammals, 647 

 Hereditv, 572-600 



ABO blood groups, 590, 591 



acquired characters, 598, 62 i 



alleles, 589 



chromosomes of man, 583 



color blindness, 585 



components of, 599 



disease, 596 



and environment, 599 



genes, 585, 586-592 



linkage, 586 



maternal impressions, 597 



Mendel's laws, 581 



multiple births, 596-598 



mutations, 593, 621 



Rh groups. 591, 592 



sex, 583, 584, 585 



sex linkage, 586 



traits, 596 



variations, 589, 608 

 Heredo-environmental interactions, 



599 

 Hermaphroditic animals, 79, 97 



Ctcnophores, 130 



duct, snail, 292 



PhoTonis, 169 



Planaria, 1 36 



tunicate, 323 

 Hermit crab, frontispiece, 218 



