828 INDEX. 



Dithyrocaris, 314. 



Diver, 603. 



Djiggetai, 701. 



Docophorus, 345. 



Dodo, 617, 618. 



Dog, 748. 



Dog-fishes, 497, 498, 499. 



Doliolum, 383, 387. 



Dolphins, 6S9. 



Donkey, 701. 



Dorcatherium, 722. 



Doridce, 413. 



Doris, 413. 



Dormice, 759. 



Dorsal vessel of Insects, 338. 



Dorsibranchiata (see Errantia). 



Dorylaimm, 247. 



Draco, 551, 565. 



Dracunculus, 245, 246. 



Dragon-flies, 351. 



Dremotherium, 722. 



Dromceognathce, 578. 



Dromceornis, 600. 



Dromaius, 696. 



Dromatherium, 669. 



Dromedary, 712. 



Dromia, 811. 



Dryopithecus, 782. 



Duck, 605, 606. 



Duck-mole, 641, 643, 648, 656, 657. 



Dugong, 680, 681, 682, 683. 



Dytiscidce, 343, 362. 



Eagle, 632. 



Eagle-rays, 500. 



Earthworm, 263. 



Earwig, 350. 



Echidna, 643, 648, 652, 656, 657, 658, 659. 



Echimys, 756. 



Echinococci, 235, 236. 



Echinodermata, 21 ; general characters 

 of, 190 ; development of, 191 ; divisions 

 of, 192; distribution of, in time, 2'22etseq. 



Echinodon, 554. 



Echinoidea, characters of, 193 ; test of, 

 ib.; ambulacral system of, 196; digest- 

 ive system of, 198; divisions of, 200; 

 distribution of, in space, 222 ; in time, 

 224. 



Echinops, 769. 



Echinorhynchus, 243. 



Echinothuria, 200. 



Echinothuridce, 193, 200. 



Echinus, 192, 195. 



Echiurus, 255, 256. 



Ectocyst, 374. 



Ectoderm, 107. 



Ectosarc, 63. 



Edaphodus, 497, 507. 



Edentata, 643, 651 ; general characters of, 

 672 ; distribution of, in time, 678. 



Edriophthalinata, 302. 



Edivardsia, 155, 156, 157, ISO. 



Eels, 486. 



Elapina, 542. 



Elaps, 543. 



Eider-duck, 606. 



Elasmobranchii, characters of, 494 et 

 seq. ; divisions of, 496-500 ; position of, 

 in the scale of Fishes, 500 ; distribution 

 of, in time, 504, 505. 



Elasmodus, 497, 507. 



Elaphurus, 717. 



Eiasmognathus, 60S. 



Elateridce, 362. 



Electric Eel, 4S6, 487. 



Electric Ray, 499. 



Elephant, 651, 728, 729, 730, 731, 733. 



Elephant-seal, 738. 



Elephant-shrew, 770. 



Elephas, 729. 730, 733. 



Elk, 716. 



Elysiadce, 413. 



Elytra, of Aphrodite, 270; of Coleoptera, 



335, 361. 



Emballonuridce, 764. 

 Emeu, 595, 596, 597. 

 Emydidce, 535, 537. 

 Emydium, 321. 

 Emys, 532. 

 Enaliosauria, 560. 

 Encephala (Mollusca), 396, 405. 

 Encrinus, 223. 

 Endocyst, 374. 

 Endoderm, 107. 

 Endopodite, 280. 

 Endosarc, 63. 

 Endostyle, 382. 

 Enhydris, 745. 

 Entomophaga, 665. 

 Entomostraca, 283 ; characters of, 292 ; 



divisions of, 292. 

 Entosolenia, 69. 

 Entozoa, 229. 

 Eocidaris, 200, 224. 

 Eocystites, 223. 

 Eohippus, 702. 

 Eophrynus, 327. 

 Eosaurus, 559. 

 Eoscorpius, 327. 

 Eosphora, 251. 

 Eotherium, 683. 

 Eozoon, 76. 

 Ephemeridce, 351. 

 Ephyra, 140. 

 Epicriurn, 515. 



Epidermis (of the shell of Mollusca), 369. 

 Epimera, 279. 

 Epipodite, 281. 

 Epipodium, 406 ; of Pteropoda, 416 ; of 



Cephalopoda, 420. 

 Episterna, 279. 



f~ istome, 376. 

 istylis, 99. 

 izoa, 283. 

 uidce, 699, 700, 702. 

 Equus, 700, 701, 702. 

 Erethizon, 755. 

 Erichthys, 306. 

 Ericulus, 769. 

 Erinaceidce, 769, 771. 

 Erinacevs. 771. 

 Ermine, 743. 



Errantia, 259; characters of, 266; gem- 

 ination of, 269 ; development of, ib. ; 

 distribution of, in time, 271. 

 Eschscholtzia, 180. 

 Esocidaz, 485. 

 Estheria, 296, 297. 

 Eucecryphalus, 78. 

 Eucharis, 180. 

 Eudendrium, 120. 

 Euglena, 100, 101. 

 Euglypha, 73. 





