INDEX 



819 



ECHINUS, 393 : General external features, 

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

 lantern, 397 : Nervous system, 398 : 

 Ambulacra! system, 399 : Enteric canal, 

 399, 400 : Ccelome, 399 : Blood-vascular 

 system, 400 : Reproductive organs, 

 idO: Development, 400: Systematic 

 position, 414 



Echiuroidea, 491)*, 497, 498, 499, 502 

 Erhhn-Hx, 496, 497, 500, 501 



Ectobranchiata, 41 5 : 



Kctocyst, 341* 



Ectoderm, 23* See Body-wall 



Ectoprocta, 347*, 348 : Structure of body- 

 wall, 351 : Alimentary canal, 351 : 

 Nervous system, 351 : Nephridia, 352 : 

 Avicularia, 352 : Vibracula, 352 : Re- 

 production and development, 352 : 

 Ethology and distribution, 353 



Ectosarc, 46 



Edriasteroidea, 414*, 435 



Edwardsia, 200, 202, 227, 229 



Eggs See Development 



Eimeria, 84 



Ejaculatory duct, 243 



Elasipoda, 412*, 428, 434 



Etedone mow hat a, 798 



Elephant's tusk shells, 756 



Eleutherozoa, 410* 



Elk-horn coral, 156, 157 



Elytra, of Cockroach, 622 : Polvcha-ta, 

 469: Coleoptera, 635, Ii4o 



Embryology, 3* See Development 



Empis, 644 



Emulsions, 34 



Encystation, 45*, 46, 59 



Endites, 530 



Endocyst, 341* 



Endoderm, 23* 



Kndoderm-disc, of Axfar/i*, 55S 



Endoderm lamella, 136* 



Endogastric, 777* 



Endophragmal system, of Ax/rim*, 542 



Endopodite, 53S* 



Endoprocta, 340, 348*, 354: Vestibule, 

 354 : Nephridia, 354 : Cloaca, 354 : 

 Ganglion, 354: Testes and ovaries, 

 354 : Foot-gland , 354 : Development. 

 355 



Endosarc, 46 



Endoskeleton, 3 1 * 



Endosternite, 655, 667 



End-sac, 534 



Enteric canal See Digestive svstmi 



Enteroca-le, 389 



Enterozoa, 105 



Entobranchiata, 415* 



Entorafi'tf, 711 



Environment, 9* 



Eocene, 7 



Eoli*, 734, 742, 744 



Epeira diadema, 664 



Ephdota, 100, 101 



'/, 633 

 Kphemerid', 641, 653 

 Ephippium, 597 



E}ilil/t'n/ii, 179, ISO 



Ephvrula, of Ann /in. 175' 

 Epiblast, 23* 



Epibolic gastrulation, 275 



Epiboly, 218* 



Epicranium, 620*, 637 



Epidermis, 24, 31 See Body-wall 



Epimerite of Gregarinida, 82, 83 T 



Epineural canals, 398* 



Epipharynx, 641 



Epiphragm, 738 



Epiphysis, of Sea-urchin, 398 



Epipodite, 544* 



Epipodium, 740 



Epistoma, of Aufarux, 512 



Epistome, 340, 351, 356 



Epixfi/li* pln-afUix, 92, 94 



Epistylis umbellaria, 93 



Epitheca, 205* 



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

 Stratified, 24* 



Epithelium, enteric, 33* 



Equatorial plate, 18* 



Equi valve, 699* 



Eryaailus, 564, 575, 576 



Estheria, 564, 571 



Ethiopian, 9* 



Ethology, 9* : of Platyhelminthes, 283 : 

 Rotifera, 335: Ectoprocta, 353: Echi- 

 nodermata, 434 : Cha;topoda, 488 : 

 Hirudinea, 522 : Crustacea, 600 : In- 

 secta, 651 : Arachnida, 672 : Pelec\'- 

 poda, 710: Amphineura, 720: Gastro- 

 poda, 755 



Eifli/tuiiy, 328 



Enchlora, 222 



Eucirripedia, 565", 577. 57!) 



Eucope, development, 152 



Eucopepoda, 564", 573, 574, 575, 6"2 



Effflendrium, 140 



EU(;JJ-;NA VJKTDIS, 67, 68: Systematic 

 position, 70 



Eulamellibranchiata, 696*, 697, 698, 711, 

 712 



Eucarida, 56S , ;,s7 



Elt<-t,/><//ri, 134 

 /'Jin// 1 n id n-. 7 ( > 

 Einjh iinidi n . 7<> 

 Eumalacostraca, 566''', 5sl 

 Euph'tiixin, 56S, 595. 5!t!) 

 Euphausiacea, 5liS , 5S7, 59 4, 596, 599, 

 (i< 13 



/Jii/tln-nxi/iifi, 46S 



Euphyllopoda. 59(5 

 Eiij,l-t,ll<i, 120 

 Kn/HHimhix, 485 

 Euryalida, 417. 42M. 421 

 Eurypterida, 662*. 666, 668, 1173, 7S 

 Enryplt rn* fi*<-1u.ri, 668 

 EUSCORPJO See BUTHUS 



