INDEX 



531 



Cranial nerves of frog, 92 

 Cranium, 83 

 Craspedacusta, 304 

 Crayfish, 23, 394, 395 



development, 407 



habitat and behavior, 396 



internal structure, 400 

 Creosote bush-kangaroo rat biome, 464 

 Cretinism, 197 

 Crinoidea, 361 

 Crocodiles, 148 



Cro-Magnon man, 479, 495, 497 

 Crop, 348 



Cross-fertilization, 331 

 Crosses, 239 

 Crossing over, 248 

 Crura cerebri, 91 

 Crystalline cone, 405, 406 



iens, 219 



style, 376 

 Ctenophora, 23 

 Cubomedusae, 308 

 Cucumaria, 361 

 Cuvier, 35 

 Cycle, nitrogen, 28 

 Cyclophyllidea, 324 

 Cyclopia, 234 

 Cyclops, 394, 412 

 Cyclosis, 178, 295 

 Cyclostomata, 147 

 Cynthia, 147 

 Cypris, 394 



Cysticercus, 324, 454, 456 

 Cytology, 19 

 Cytopharynx, 282 

 Cytoplasm, 48 

 Cytosome, 287 



D 



Daphnia, 394, 412 

 Darwin, Charles, 36, 480 



and evolution, 506 

 Darwin, Erasmus, 36 

 Davis Mountains, 476 

 Decapoda, 410 

 Deciduous formation, 464 

 Deer, Virginia 464 

 Deltoid ridge, 114 

 Dendrites, 137 

 Dendy, Arthur, 492 

 Dental formula, 112 

 Dentalium, 373 

 Depressor, 11 



Dermal branchiae, 363, 367 

 Dermatitis, 175 

 Desert formation, 462, 464 

 Development, intrauterine, 223 



of aortic arches, 501, 504 



of crayfish, 407 



Development — Cont 'd 



of different vertebrates, 502 



of individual, 209 

 deVries, Hugo, 508 

 Dextrocardia, 234 

 Diabetes, 208 



insipidus, 203, 206 

 Diaphragmatic hernia, 228 

 Diaptomus, 412 

 Diastase, 125, 169 

 Diastema, 112 

 Diastole, 180 

 ~ Dicrocoelium, 450 

 Didinium, 272 

 Diencephalon, 90, 218 

 Differential birth rate, 258 

 Difflugia, 270 

 Digenea, 324 

 Digestion, as function, 168 



in clam, 376 



in frog, 69 



gastric, 170 



intestinal, 170 

 Digestive enzymes, 169 



system, development, 217 

 of rat, 121 

 of vertebrate, 159 

 Digits, 109 



extra, 229 

 Dihybrid cross, 240 

 Dilator, 116 

 Dillinger, 293 

 Dioctophyme, 337 

 Dioctophymoidea, 

 Dioecious organisms, 62 

 Diphyllobothrium, 317, 324, 434 



latum, 434, 437, 456 

 Diploblastic 303 

 Diploid, 210 



Dipylidium caninum, 455, 456 

 Discomedusae, 308 

 Dispersal of animals, 478 

 Distribution, animal, 472 



bathy metric, 472, 474 



effects of man upon, 479 



geographic, 472 



of biotic communities, 461 



vertical, 472, 474 

 Diverticula, 328, 356 

 Diverticulum, 149 

 Dolichoglossus, 148 

 Dominance, lack of, 244 



principle of, 237 

 Dominant factor, 237 

 Dorsal aorta of rat, 128 

 Dourine, 281 

 Dracunculus, 438 

 Drosoyhila, 30, 242 

 Duct, Wharton's, 125 



Wolffian, 222 





