INDEX 



819 



EoHiNus, 393 : General external features, 

 393, 394, 395 : Corona, 396 : Aristotle's 

 lantern, 397 : Nervous system, 398 : 

 Ambulacral system, 399 : Enteric canal, 

 399, 400 : Ca;lome, 399 : Blood-vascular 

 system, 400 : Reproductive organs, 

 400 : Development, 400 ; Systematic 

 position, 414 

 Echluroidea, 496*, 497, 498, 499, 502 

 Eehiuru.% 496, 497, 500, 501 

 Ectobranchiata, 415* 

 Ectocyst, 341* 



Ectoderm, 23*— See Body-wall 

 Ectoprocta, 347*, 348 : Structure of bo.ly- 

 wall, 351 . Alimentary canal, 351 : 

 Nervous system, 351 : Nephridia, 352 : 

 Avioularia, 352 : Vibracula, 352 : Re- 

 production and development, 352 : 

 Ethology and distribution, 353 

 Ectosarc, 46 



Edriasteroidea, 414*, 435 

 Edwardaia, 200, 202, 227, 229 

 Eggs — See Development 

 Eimeria, 84 

 Ejaculatory duct, 243 

 Elasipoda, 412*, 428, 434 

 Eledone moschata, 798 

 Elephant's tusk shells, 756 

 Eleutherozoa, 410* 

 Elk-horn coral, 156, 157 

 Elytra, of Cockroach, 622 : Polvchaeta, 



469: Coleoptera, 635, 640 

 Embryology, 3*^— See Development 

 Empis, 644 

 Emulsions, 34 

 Encystation, 45*, 46, 59 

 Endites, 530 

 Endocyst, 341* 

 Endoderm, 23* 



Endoderm-disc, of Adaciis, 558 

 Endoderm lamella, 136* 

 Eudogastric, 777* 



Endophragmal system, of Aslacua, 542 

 Endopodite, 538* 



Endoprocta, 340, 348*, 354 ; Vestibule, 

 354 : Nephridia, 354 : Cloaca, 354 : 

 Ganglion, 354 : Testes and ovaries, 

 354 : Foot-gland , 354 : Development, 

 .355 

 Endosarc, 46 

 Endoskeleton, 31* 

 Endosternite, 655, 667 

 End-sac, 534 



Enteric canal— See Digestive s\stem 

 Enteroco3le, 389 

 Enterozoa, 105 

 Entobranchlata, 415* 

 Entovalra, 711 

 Environment, 9* 

 Eocene, 7 



Eolis, 734, 742, 744 

 Epeira diadema, 664 

 Uphelota, IQO, 101 



Ephemera, 633 



Ephemeridce, 641, 653 



Ephippium, 597 



Ephyropsis, 179, 180 



Ephyrula, of Aurelin, 175* 



Epiblast, 23* 



Epibolic gastrulation, 275 



Epiboly, 218* 



Epioranium, 620*, 637 



Epidermis, 24, 31— See Body-vifall 



Epimerite of Gregarinida, 82, 83* 



Epineural canals, 398* 



Epipharynx, 641 



Epiphragm, 738 



Epiphysis, of Sea-urchin, 398 



Epipodite, 544* 



Epipodium, 740 



Epistoma, of Astacus, 542 



Epistome, 340, 351, 356 



Epistylis plicatilis, 92, 94 



Epislylis wmbeUaria, 93 



Epitheea, 205* 



Epithelia, 24* : Non-stratified, 24* ■ 

 Stratified, 24* 



Epithelium, enteric, 33* 



Equatorial plate, 18* 



Etjuivalve, 699* 



Ergasilua, 564, 575, 576 



Eslheria, 564, 571 



Ethiopian, 9* 



Ethology, 9* : of Platyhelminthes, 283 : 

 Rotifera, 335 : Ectoprocta, 353 : Echi- 

 nodermata, 434 : Chaitopoda, 488 : 

 Hirudinea, 522 : Crustacea, 600 : In- 

 secta, 651 : Arachnida, 672 : Pelecy- 

 poda, 710 : Amphineura, 720 ; Gastro- 

 poda, 755 

 Euchlanis, 328 

 Eachlora, 223 



Eucirripedia, 565*, 577, 579 

 Eucope, development, 152 

 Eucopepoda, 564*, 573, 574, 575, 602 

 Endendrium, 140 

 EuGLENA viRiDis, 67,. 68 : Systematic 



position, 70 

 Eulamellibrancliiata, 696*, 697, 698, 711, 



712 

 Eucarida, 568*, 587 

 Eucopella, 134 

 Euglenidm, 70 

 Euglenoidea, 70 

 EumalacoBtraca, 566*, 581 

 Eziphausia, 568, 595, 599 

 Euphausiacea, 568*, 587, 594, 596, 599, 



603 

 Euphrosyne, 468 

 Euphyllopoda, 596 

 Eupkctella, 120 

 Eiipomatus, 486 

 Euryalida, 417, 420, 421 

 Eurypterida, 662*, 666, 668, 673, 678 

 Eurypterus fischeri, 668 

 BuscoRPio— See Buthus 



