496 



INDEX 



Dermal fin-ray, 51, 310 



— muscle, 133, 258, 278, 386 

 Dermatome, 270 



Dermis, 7, 256 



Dermoptera, 457 



Diaphragm, 142, 274 



— , devpt. of, 234 



Diaphysis, 140, 409 



Diapsida, 290, 441 



Diastataxy, 450 



Diastema, 138 



Dichocephalous rib, 308 



Didelphys, 456 



Diencephalon, 41 



Digital formula, 93 



Digitigrade, 319 



Dinosaurs, 290, 441 



Diphy cereal tail, 80, 324 



Diphyodont dentition, 138, 265 



Diplodocus, 441 



Dipnoi, 428 



Dip terns, 428 



Discontinuous distribution, 80, 428 



Distance-receptors, 379 



Dodo, 449 



Dogfish, blastopore of, 240 



Dorsal aorta, 13, 31, 58 



, devpt. of, 186, 218 



— mesentery, 2, 53, 271 



— mesocardium, 185 



— nerve, 365 



— rib, 307 



Dorso-lateral placode, 194 

 Down-feather, 119 



Ductus arteriosus, 97, 147, 197, 

 218, 223, 233, 334 



— Botalli, 97, 148, 197, 334 



— caroticus, 95, 109, 197, 334 



— cochlearis, 114, 158 



— Cuvieri, 13, 31, 58, 271, 327 

 , devpt. of, 187 



— endolymphaticus, 39, 191 



— venosus, 218 

 Dumb-bell-shaped bone, 297 

 Duodenum, 145 



Dura mater, 43, 155 

 Dwarf males, 430 



Ear, 39, 395 



— , devpt. of, 191 



" Ear-brain," 367 



Echidna, 454 



— , temperature of, 405 



Echinodermata, 422 



Ectopterygoid, 71, 73, 296, 300 



Edentates, 457 



— , teeth of, 269 



Edriolychnus, 430 



Effectors, 363 



Efferent branchial arteiy, 13, 31, 58, 



187 

 Egg-membranes, 172, 198 

 Egg-shell, 198, 402, 436 

 Egg- tooth, 224 

 Elastica (of notochord), 302 

 Electric organs, 277 

 Elephas, 458 

 Embolomeri, 304, 434 

 Embryos, temperature of, 407 

 Emu, 450 



Enamel, 37, 74, 257, 261, 265, 269 

 Endolymph, 113, 395 

 Endopterygoid, 71, 73, 300 

 Endostyle, 10, 29, 168, 399, 425 

 Enteroccel, 165, 276 

 Entypy, 254 

 Eoanthropus, 464 

 Eogyrinus, 431 

 — , ear of, 395 

 — , pectoral girdle of, 315 

 Eohippus, 457 

 Epaxonic muscles, 77 

 Epiboly, 163, 177 

 Epibranchial, 48, 69, 73, 300 



— placode, 194, 368 

 Epidermis, 7, 20, 256 

 Epididymis, 111,151,350 

 Epigamic characters, 351 

 Epigastric vein, 130 

 Epiglottis, 145 

 Epihyal, 71, 73, 300 

 Epiotic, 68, 73, 300 

 Epiphyses (of bone), 140, 409, 453 

 Epiphysis (of brain), 41 

 Epipleur, 12, 170 

 Epipterygoid, 105, 295, 300 

 Epipubic bone, 301, 317, 456 

 Epoophoron, 149 



Equus, 457 



Eryops, 315 



Ethmoid ligament, 49 



Eunotosaurus, 439 



Euparkeria, 441, 446 



Eustachian tube, 107, 145, 183, 338 



— valve, 333 

 Exciter neuron, 384 

 Exoccipital, 68, 72, 90, 104, 120, 



135, 286, 300 

 Exocoetus, 430 

 External auditory meatus, 117 



— gills, 183 



— rectus muscle, 46, 362 

 Exteroceptors, 363 

 Extrabranchial, 49 



