INDEX 



42J 



Copulation, in elasmobranchs, 113, 114; 

 in Preciliidae, 142, 166; in snakes, 256 



Coracise, 306 * 



Coracias garrulus, 307 * 



Coraciiformes, 289, 306-309 



Coraciomorphse, 289 



Cormorants, 295 



Corpus callosum, 325, 330 *, 331 



Coryphodon, 342, 343 * 



Corythosaurus, 218, 221 



Costa, 33 



Coues, 292, 293 



Coyote, 366 



Cranes, sandhill, 301 



Craniata, classification of, 33 



Cranium, of Cyclostomata, 88; of 

 Lamprey, 93; of Polypterus, 130*, 

 131; of stegocephalian, 182*; of 

 turtle, 229, 230*; of Sphenodon, 

 233 *; of Archceopleryx, 278; of 

 mammal, 328 *; of cynodont, 334 *; 

 of Ptilodus, 338; of Balcena, 403 



Creodonta, 340, 341 *, 342 



Crex pratensis, 303 * 



Cricotus, 180 *, 183 



Crocodilus americanus, 245; C. niloticus, 

 246 



Crocodilia, 242-246; habits of, 244 



Crocodilidae, 245, 246 



Crocuta maculata, 367 * 



Crossopterygii, 105, 106, 111, 127, 128- 

 131; as ancestors of Amphibia, 174, 

 175 



Crotalus durissus, 256 *, 258 



Cryptobranchus allegheniensis, 186, 

 187 *; C. japonicus, 186, 187 



Cryptodira, 236-240 



Cryptopsarus couesii, 136 * 



Crypturiformes, 287, 288 



Ctenoid scales, 109, 110 



Cuckoos, 305 



Cuculi, 305 



Cuculiformes, 289, 306, 307 



Cursorial origin of flight, theory of, 

 272-273 



Cycloid scales, 109, 110 



Cyclomyaria, 60 



Cyclopes^ 37 



Cyclostomata, 33, v/ 68, v 69, 73, 87-96 



Cynpdontia, 216, 333, 334, 335, 336 



Cynognathus, 215 *, 216 



Cyprmidse, 140 



Cyprinodon, 166 



Cypselus, foot of, 280 *; beak of, 282 * 



Cystignathidse, 201, 202 



Dasypodidse, 376 



Dasyprocta aguti, 372 * 



Dasypus novemcinclus, 375 *, 376 



Dasyuridae, 356 



Dasyurus viverrinus, 355 *, 356 



Deal-Fish, 150 



Deep-sea Fishes, 136 * 



Deer, Mouse, 389; family, 390; musk, 



390 

 Degeneracy, a criterion of racial 



senescence, 21 

 Delphinus delphis, 401 * 

 Dendrobatinae, 202, 203 

 Dendrobatinus, 203 

 Dendrochirus, 104; D. hudsoni, 149 * 

 Dendrolagus, 359 

 Dentition, of mammal, 328-331 

 Dermatemydae, 237 

 Dermochelys coriacea, 234, 235 * 

 Dermoptera, 346, 362 

 Desert-dwellers (adaptations of), 18 

 Desmodactyli, 309, 310 

 Desmodus rotundus, 364; D. rufus, 



365* 



Desmognaihus fuscus, 188 * 

 Development, of Amphioxus, 43-48; of 



Tunicate, 52-54; of salpian, 57 *, 58; 



of myxinoids, 91; of lamprey, 94, 



95 *, 96; of Neoceratodusforsteri, 166; 



of salmon, 167; of Hylodes, 202 *; of 



frog, 203-209; of birds, 314-323; of 



mammals, 404-411 

 Devil fish, 125 

 Diadectes, 216 



Diaphragm, of mammals, 325 

 Diapsida, 214 

 Diemictylus viridescens, 191 

 Didelphia, 345, 352-359; definition, 352 

 Didelphidse, 354-355 

 Didelphis virginiana, 354, 355 * 

 Dimetrodon, 215 *, 216 

 Dingo dog, 366 

 Dinoceras, 343 * 

 Dinornis, 287 

 Dinornithiformes, 287 

 Dinosaurs, Carnivorous, 219, 220; 



Herbivorous, 220-223; extinction of, 



223, 224 



