INDEX. 



691 



Doris, 337, 341. 



Dormice, 691. 



Dorsal vessel, of Insects, 272. 



Dorsibranchiata, 213 (see Errant ia). 



Draco, 466, 476. 



Dracunculus, 196. 



Dreissena, 327. 



Dromaius, 512, 513. 



Dromatherium, 640, 615. 



Dromedary, 591. 



Dromia, 249. 



Di-yopithecus, 648. 



Duck, 498, 506. 



Duck-mole, 539, 540, 545, 548, 55', 555. 



556. 



Dugong. 539, 552, 570, 571. 

 Dytiscidie, 276. 



EAGLE, 530. 



Ecderon, 125. 



Echidna, 540, 545, 548, 549, 552, 556, 557. 



Echinidie, 1(5:1 



Echinococci, 189. 



Echinoconid(e, 163. 



Echinodermata, 154 ; general characters 



of, 15 i; development of, 156; divisions 



of, 157; distribution, of, in time, 181, 



et seq. 



Echinodon, 467. 

 Echinoidea, 156 ; characters of, 157 ; test 



of, ib. ; ambulacral system of, 160 ; 



digestive system of, Itjl ; families of. 



163; distribution of, in space, 180 ; in 



time, 182. 

 Echinoneid(e, 163. 

 Echinorhijnchus, 194. 

 Echinothuridx, 167. 

 Echinozoa, 154 (see Annuloida). 

 Echinus, 159, 161. 

 Echiurus, 284. 

 Ectocyst, 302. 

 Ectoderm, 87, 125. 

 Ectosarc, 54. 

 Edaphodus, 421, 430. 

 Edentata, 541, 548, 550, 552 ; general 



characters of, 565; distribution of, in 



time, 642. 

 Edriophthalmata, 226; characters and 



divisions of, 242. 

 Edwardsia, 128. 

 Elasmobranchii, characters of, 418, 419 ; 



divisions of, 420 ; position of, in the 



scale of Fishes, 424 ; distribution of, in 



time, 430. 



E/asmodas. 421,430. 

 Eledone, 357. 

 Elephant, 542, 54S, 553. 

 Elephant-shrew, 628. 

 Elephas. 601, 6u2, 616. 

 Elysia, 341. 

 Eiysiadce, 337, 341. 

 Elytra, of Aphrodite, 214 ; of Coleoptera, 



26-), 291. 



Emarginula, 310. 

 Emeu, 513. 

 Emydidce, 452, 453. 

 Emys, 450, 452. 

 Enaliosauria, 472. 

 Enallostega, 63. 



Encephala (Mollusca), 320, 329. 

 Encrinus, 18 1. 

 Euderon, 125. 



Endocyst, 302. 



Endoderm, 87, 125. 



Endopodite, 223. 



Endosarc, 5*. 



Endostyle, 3.j8. 



Enhydra, 611. 



Entcmophaga, 562. 



Entomostega, 63. 



Entomostraca, 226 ; characters of, 233 ; 

 divisions of, 234. 



Entosolenia, 61. 



Entozoa, 183. 



Eocystites, 182. 



Eosaurus, 472. 



Eosphora, 201. 



Eozoon, 65. 



Ephemeride, 231. 



Ephyra, 117* 



Epidermis (of the shell of Mollusca), 297. 



Epiinera^ 222. 



Epipodite, 224. 



Epipodium, 330 ; of Pteropoda, 342 ; of 

 Cephalopoda, 345. 



Epistema, 222. 



Epistome, 303, 306. 



Epistylis. 81. 



Epizoa, 2-25 ; characters of, 226. 



Equidie, 585, C44. 



Equus, 5b5. 644. 



Erethizon, 619. 



Erichthyx, 246. 



Erinaceidw, 628. 



Erinaceus, 62 4. 



Errantia, 207 ; characters of, 212 ; gem- 

 mation of, 214 ; development of, 2l5 ; 

 distribution of, in time, ib. 



Esocidce, 40^. 



Estheria, 253. 



Eudendrium>) 97. 



Kugereon, 292. 



Eulima, 339. 



Eunice, 215. 



Eunicea. 215; 



Siiomphalus, 314. 



Euplectella, 74. 



Eupsammidie, 152. 



Euryale, 169. 



Eurypterida, 241 ; distribution of, in, 

 time, 253. 



Eurypterus, 253. 



Eurystomata, 146. 



Exoccetus, 3y3. 



Exopodite, 222. 



Extracrinus, 181. 



FACIAL Suture of Trilobites, 239. 



Falconidae, 530. 



Favositidce, 152. 



Favospongia, 75. 



Feathers (structure of), 481. 



Feather-star, 174. 



J-Wtdoe, 541, 6 [4, 615. 



Felis, 615, 616. 



Fenestella, 318. 



.Fera, 603. 



^t6er, 620. 



Field-bug, 279. 



Filar ia, 196. 



File-fishes, 412. 



Finches, 525. 



Finner-whales, 576. 



Firola, 341. 



