796 



INDEX 



Endopodite, 526* 



Endoprocta, 332, 341*, 347 : Vestibule, 

 347 : Nephridia, 347 : Cloaca, 347 : 

 Ganglion, 347 : Testes and ovaries, 

 347 : Foot -gland, 348 : Develop- 

 ment, 348 



Endosarc, 46* 



Endoskeleton, 32* 



Endosternite, 640*, 651 



End-sac, 522 



Entamcetia histolytica, 51 



Enteric canal See Digestive system 



Enteroco3le, 382 



Enterozoa, 106 



Entobranchiata, 406* 



Entovalva, 693 



Environment, 9* 



Eocene, 7 



Eolis. 715, 723, 724 



Epeira diadema, 648 



Ephelota, 102, 103 



Ephemera, 618 



Ephemeridce, 626, 637 



Ephippium, 582 



Ephyropsis, 178, 179 



Ephyrula, of Aurelia, 174* 



Epiblast, 24* 



Epibolic gastrulation, 270 



Epiboly, 216* 



Epicranium, 603*, 622 



Epidermis, 24*, 32 See Body-wall 



Epimerite of Gregarinida, 84, 85* 



Epineural canals, 391* 



Epipharynx, 627 



Epiphragm, 718 



Epiphysis, of Sea-urchin, 389 



Epipodite, 531* 



Epipodium, 720* 



Epistoma, of Astacus, 529 



Epistome, 333, 344, 349 



Epislylis plicatilis, 94, 96 



Epistylis umbellaria, 94, 95 



Epitheca, 202* 



Epithelia, 25, 26* : "N on -stratified, 25, 

 26* : Stratified, 25, 26* 



Epithelium, enteric, 34* 



Epithetosoma, 480, 482 



Equatorial plate, 19* 



Equivalve, 682* 



Ergasilus, 551, 561, 562 



Estheria, 550, 557 



Ethiopian, 9* 



Ethology, 9* : of Platyhelminthes, 279 : 

 Rotifera, 328 : Ectoprocta, 346 : 

 Echinodermata, 424 : Cha&topoda, 

 476 : Hirudinea, 509 : Crustacea, 

 585 : Insecta, 636 : Arachnida, 655 : 

 Pelecypoda, 692 : Amphineura, 701 : 

 Gastropoda, 735 



Eucarida, 554*, 572 



Euchlanis, 322 



Euchlora, 219 



Eucirripedia, 651*, 663, 565 



Eucope, development, 153 



Eucopella, 135 



Eucopepoda, 551*, 559, 560, 561 



Eudendrium, 140 



EUGLENA VIRIDIS, 69, 70, 92 : Syste- 



matic position, 71 

 Euglenidce, 71 

 Eugleno.dea, 71 

 Eutflypha, 52 

 Eulamellibranchiata, 678*, 679, 680, 



693, 694 



Eumalacostraca, 552*, 567 

 Euphan&a, 554, 580, 582, 584 

 Euphausiacea, 554*, 572, 579, 580, 584, 



588 



Euphrosyne, 458 

 Euphyllopoda, 581 

 Euplectella, 122 

 Eupolia, 287 

 Eupomatus, 474 

 Euryalida, 408, 411, 412 

 Eurypauropus, 598 

 Eurypterida, 646*, 650, 651, 652, 656, 



662 - u. 



Eurypterus ftacheri, 652 

 EUSCORPTO See BUTHTJS 

 Euscorpius carpal! icus, 644 

 Euscorpius itaiicns, 655, 656 

 Euspongia, 116i, 121 

 Euthyneura, 714*, 717, 722, 726, 728 

 Evolution, 6 

 Examples, of Rhizopoda, 46 : Myce- 



tozoa, 68 : Mastigophora, 69 : Sporo- 



zoa, 82 : Infusoria, 90 : Porifera, 

 Hydrozoa, 129 : Scyphozoa, 

 Actinozoa, 183 : Ctenophora, 

 Platyhelminthes, 233, 236, 

 Nematoda, 292 : Rotifera, 

 Polyzoa, 334 : Branchiopoda, 

 Asteroidea, 368 : Echinoidea, 

 Holothuroidea, 393 : Crino- 

 396 : Chsetopoda, 430, 443 : 



106 

 167 

 208 

 243 

 317 

 353 

 386 

 idea 



Sipunculoidea, 484 : Crustacea, 514, 

 527 Insecta, 603 : Arachnida, 638 : 

 Pelecypoda, 663 : Gastropoda, 702 : 

 Cephalopoda, 738, 754 



Excretion, 13*, 37 



Excretory aperture, 742* 



Excretory pores, 212, 293 



Excretory system, of Leptolinse, 151 : 

 Planaria, 235 : Liver-Flu ke, 238 : 

 Tcenia, 244 : Platyhelminthes, 263 : 

 Nemertinea, 287 : Ascaris, 296 : 

 Nematoidea, 302 : Echinorhynchus, 

 308 : Brachionus rubens, 320 : Roti- 

 fera, 327 : Bugula, 336 : Ectoprocta, 

 344 : Endoprocta, 347 : Phoronis, 

 349 : Magellania, 358 : Brachiopoda, 

 362 : Nereis, 437, 438 : Lumbricus, 

 449, 450 : Chsetopoda, 467, 468, 469 : 

 Sipunculus, 487 : Sipunculoidea, 

 489 : Hirudo, 498, 499, 500 : Hiru- 

 dinea, 506, 507 : Apus, 522 : Astacus, 



