424 



INDEX. 



Dentary, 164. 

 Denticetae, 408. 

 Dentinal canals, 16. 

 Dentinal papilla, 92. 

 Dentine, 16, 19. 

 Dercetidae, 258* 

 Derma, 87. 

 Dermal glands, 89. 

 Dermal organs, 86. 

 Dermaptera, 385. 

 Dermochelys, 310. 

 Derotremata, 285. 

 Desmodus, 388. 

 Desmognathse, 347. 

 Desmognathus, 285. 

 Desmognathous skull, 334. 

 Deutoplasm, 205. 

 Devil fish, 240. 

 Devexa, 399. 

 Diaphragm, 106. 

 Diapophysis, 141. 

 Diatryma, 346. 

 Diceratherium, 395. 

 Dichobune, 398. 

 Diclonius, 317. 

 Dicotyles, 397. 

 Dicotylidae, 397. 

 Dicrocynodon, 380. 

 Dicynodon, 305. 

 Didelphia, 378. 

 Didelphidae, 379. 

 Didelphys, 379. 

 Didymodus, 237. 

 Didunculus, 350. 

 Didus, 350. 

 Diemyctylus, 285. 

 Diencephalon , 49. 

 Diffuse placenta, 373. 

 Digestive tract, 34. 

 Digitiform appendix, 36. 

 Digitigrade, 361. 

 Digits, 176. 

 Dimetrodon, 306. 

 Dimorphodon, 330. 

 Dimylidae, 385. 

 Dinichthys, 272. 

 Dinictis, 412. 

 Dinoceras, 400. 

 Dinocyon, 412. 

 Dinornithidas, 346. 

 Dinotheridae, 401. 

 Dinotherium, 401. 

 Diodon, 267. 

 Diomedia, 349. 



Diphycercal fin, 229. 

 Diphyodont, 366. 

 Diplarthra, 392. 

 Diplodocus, 316. 

 Diplosaurus, 328. 

 Diplospondyli, 238. 

 Diplurus, 249. 

 Dipneumonia, 273. 

 Dipneustes, 267. 

 Dipnoi, 267. 

 Dipodidae, 390. 

 Diprotodon, 380. 

 Diprotodonta, 380. 

 Diprotodontidae, 380. 

 Dipsas, 325. 

 Dipterus, 273. 

 Dipus, 390. 

 Discobolus, 260. 

 Discocephali, 263. 

 Discoidal placenta, 373. 

 Discus proligerus, 125. 

 Ditrema, 260. 

 Dinosauria, 314. 

 Doctor fish, 262. 

 Dodo, 350. 

 Dog, 412. 

 Dog fish, 239. 

 Dog sharks, 239. 

 Dolichosauria, 321. 

 Dolichosoma, 283. 

 Dolphins (mammals), 408. 

 Dolphin (fish), 263. 

 Dorcatherium, 398. 

 Dorosoma, 256. 

 Dorsal aorta, 182. 

 Dorsal fin, 177, 228. 

 Dorsal nerve roots, 46. 

 Dorsal region, 142. 

 Dove, 350. 

 Draco, 320. 

 Drill, 416. 



Dromaeognathi, 345. 

 Dromaeognathous skull, 334. 

 Dromaius, 346. 

 Dromatherium, 377. 

 Dromedary, 398. 

 Dryolestes, 380. 

 Duckbill, 376. 

 Ducks, 348. 

 Duct, cystic, 40. 



" Gartner's, 129. 



" hepatic, 41. 



" mesonephric, 119. 



" Miillerian, 126. 



Duct, Stenson's, 77. 



" urogenital, 126. 



" pronephric, 117. 



" Wolffian, 119, 126. 



" of Wirsung, 40. 

 Ductus Botallii, 187. 

 Ductus choledochus, 41. 

 Ductus Cuvierii, 183. 

 Ductus endolymphaticus,7o. 

 Dugong, 405. 

 Duodenal artery, 190. 

 Duodeno-hepatic omentum, 



105. 



Duodenum, 35. 

 Duplicidentata, 391. 

 Dura mater, 57. 



Eagle, 348. 



Eared seal, 413. 



Ears, 69. 



Ear stones, 71. 



Echidna, 377. 



Echidnidae, 377. 



Echineis, 264. 



Ectethmoid, 244. 



Ectoderm, 6. 



Ectodermal structures, 43. 



Edaphodon, 242. 



Edentata, 381. 



Educabilia, 361. 



Eel, Congo, 285. 



Eel, mud, 285. 



Eel pouts, 261. 



Eels, 256. 



Efferent nerves, 47. 



Egg, 5- 



Egg, development of, 205. 

 Egg tooth, 343. 

 Elapidae, 325. 

 Elaphus, 399. 

 Elaps, 325. 

 Elasmobranchii, 232. 

 Elassoma, 259. 

 Elastic tissue, 14. 

 Elastica exerna, 135. 

 Elastica interna, 134. 

 Electrical organs, 115. 

 Electric eel, 255. 

 Electric skate, 239. 

 Elephant, 401. 

 Elephantidae, 401. 

 Elephas, 401. 

 Elginia, 305. 

 Elotherium, 397. 



