792 



INDEX. 



Diplopoda = Millipedes, 



Diplotrophoblast, . 



Diplozoon, 



Dipneumones, 



Dipnoi, . 



Dipodidfe, 



Diprotodon, 



Diptera, 



Dipterus, 



Dipus, . 



Direct division, 



Discoidal segmentation, 



Discomedusfe, 



Discophora, . 



Distomum, 



Distribution, Geographical, 



,, of Lemurs, 



,, of Marsupials. 



,, of Tapirs, . 



,, Geological, 



Division of Labour, 

 Dochmius, 

 Doctrine of Descent, 

 Dodo, .... 



Dog 



Dogfish, 



Dogwhelk, 



Dolabella, 



Doliolum, 



Dolphin, 



Donkey, 



Dorcatherium, 



Doris, .... 



Dormouse, 



Dorsal lamina of Tunicate, 



Draco, .... 



Dracunculus, . 



Dragonet, 



Dragon-flies, . 



Dreissena, 



Drepanidium, 



Drepanophorus, 



Dromseognathce, 



Dromceus, 



Dromatherium, 



Dromia, 



Duckmole, 



Ductus endolymphaticus, 



Dugong, 



Duodenum, . 



. 292 



. 651 



. 170 



333- 336 



• 5" 



■ 711 

 . 688 



• 304 



• 5" 



• 7" 



• 45 



■ 65 

 . 156 



• 213 

 . 164 



■ 753 

 . 722 

 . 684 

 . 700 



• 74 

 . 15-16 

 . 183 

 5i, 765 

 . 618 



• 715 

 . 506 



• 357 



■ 357 

 409 



• 709 

 . 701 

 . 696 



■ 357 



• 7" 



■ 404 



■ 577 

 . 1S4 

 . 520 



• 305 



■ 372 

 . 104 

 . 176 

 . 620 

 . 619 

 . 640 



• 279 

 681, 682 



• 444 

 . 691 

 . 670 



401, 



PAGE 



Duplicidentata, . . • 7'' 

 Dura mater, .... 439 



Ear of Arenicola, . . . 203 

 ,, Crayfish, . . .260 



,, Myxine, . . . 4^7 



,, Vertebrates, . ■ 444 



Earthworm, .... 187 

 ,, Development of, 196-201 

 ,, Structure of, 187-196 



Earwigs, .... 305 



Ecardines, .... 226 

 Ecaudata, .... 555 

 Ecdysis or moulting of Ar- 

 thropods, . . . 254 

 Echidna, .... 681 

 Echinochrome, . . . 238 

 Echinococcus, . . .173 

 Echinoderma, . . 7, 227 

 ,, Contrast between the 



classes of, . -251 



,, Development of, . 247 



,, General characters of, 227 



,, Larv^ of, . . . 250 



,, Relationships of, . 250 



Echinoidea, .... 236 



,, Classification of, . 240 



Echinorhynchus, . . . 185 



Echinus, .... 236 



EchiuridiTe, . . . .211 



Ectoderm, ... 36, 68 



Ectoplasm, . . . .110 



Ectoprocta, .... 225 



Edentata, . . . .688 



,, Families of, . . 689 



Edriophthalmata, . . . 276 



Eel, 510 



Egg case of Skate, . . 493 



Egg cases of Buccinum, lan- 



thina. Purpura, 

 Eggs, sec Ova, 

 ,, of Birds, 

 Eimeria, 

 Elaps, . 

 Elasipoda, 

 Elasmobranchii, 

 Electric organ of Skate, 



,, organs of Teleoste 

 Eledone, 

 Elephant's tooth shells, . 



356 

 56 

 627 

 104 

 5S3 

 243 

 477, 505 

 478 

 478 

 386 

 362 



