TNDEX 



819 



Echini s, 393: General external features, 

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

 lantern, 397 : Nervous system, 398 ■ 

 Ambulacra! system, 899: En terie canal, 

 999, 400 : ( '■! •iomc, 399 : Blood-vascular 

 system, 400 : Reproductive organs, 

 400 : Development , 400 : Systematic 

 position, 414 



Echiuroidea, 496*, 407. 498, 499, 502 



KcJtiwm*, 496, 497. 500, 501 



Ectobranchiata, 415* 



Bctocyst, 341* 



Ectoderm, 23*— See Body-wall 



Ectoprocta, 347*, 348 : Structure of body- 

 wall, 351 : Alimentary canal, 361 : 

 Nervous system, 351 : Nephridia, 302 : 

 Avicularia, 352; Vibraoala, 392: Re- 

 production and development, 352 : 

 Ethology and distribution, 353 



Ectosarc, 46 



Edriasteroidea. 414*. 435 



gdwardna, 200. 292, 227, •_ , -_".i 



Eggs — See Development 



Eimeria, 84 



Ejaculatory duct, '243 



Elasipoda, 412*, 428, 434 



SXedone moackata, 7i*<s 



Elephant's tusk shells, 7~>fi 



Eleutherozoa. 410* 



Elk-born coral, 156, 157 



Elytra, of Cockroach. 622: Polyclueta, 

 469: Coleoptera, 6*5, 640 



Embryology, 3*— See Development 



Km pis, 644 



Emulsions, 34 



Encystation, 45*, 46, 59 



Endites, 530 



Endocyst, 341* 



Endoderm, 23* 



Endoderm-disc, of A slant*, 558 



Endoderm lamella, 136* Z 



Kndogastric, 777* 



Endophragmal system, of Aetactu, 542 



Endopodite, 538* 



Endoprocta, 340, 348*, 354: Vestibule, 

 354 : Nephridia, 354 : Cloaca. 354 : 

 Oanglion, 354: Testes and ovaries, 

 3."»4 : Foot-gland , 354 : Development, 

 355 



Endosarc, 46 



Kndoskeieton. 31* 



Endosternite, 655, 667 



End-sac, 534 



Enteric canal— See Digestive system 



Enterocosle, 389 



Enterozoa, 105 



Entobranchiata, 415* 



Bntovahn, 711 



Environment, 9* 



Eocene, 7 



Eolis, 734, 742, 71 1 



Epeira diadema, 664 



Ephdota, 100, 101 



Ephemera, 633 



EphemeridAv, 641, 653 



Ephippium, 597 



Ephyropsis, 179, lsn 



Ephyrula, of Ann/in, 175* 



Kpiblast, 2a* 



Kpibolic gastrulation, 273 



Epiboly, 218* 



Epicranium, 620*, 637 



Epidermis, 24, 31 — See Body-wall 



Bpimerite of Gregarinida, 82, 83* 



Epineural canals, 398* 



Epipharynx, 641 



Epiphragm, 738 



Epiphysis, of Bsa-urohin,*398 



Epipodite, 544* 



Epipodium, 740 



Epistoma, of Antaeus, 542 



Epistome, 340, 351, 356 



Ejiixtylis plicati/is, 92, 94 



Epistylis iimhdlaria, 93 



Epitheca, 205* 



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

 Stratified, 24* 



Epithelium, enteric, 33* 



Equatorial plate, 18* 



Ecpii valve, 699* 



Brgeutttu, 564, 575, 576 



Eetheria, 564, 571 



Ethiopian, 9* 



Ethology, 9* : of Platyhelminthes, 283 : 

 Rotifera, 335 : Ectoprocta, 353 : Echi- 

 nodermata, 434 : Chajtopoda, 488 : 

 Hirudinea, 522 : Crustacea, 600 : In- 

 secta, 651 : Arachnida, 672 : Pelecy- 

 poda, 710: Amphineura, 720: Gastro- 

 poda, 755 



Eurhlatiis, 328 



Bvchlora, 222 



Eucirripedia, 56.")*, 577, 579 



Eucope, development, 152 

 Eucopepoda, 5f**> 573, 574, 575, 602 



Emh inlrium, 140 



Euglena viridis, 67, 68 : Systematic 



position, 70 

 Eulamellibranchiata, 696*, 697, 698, 711, 



712 

 Eucarida, 568*, 687 

 Europe/ fa, 134 

 Euglenida>, 70 

 En < ili uoidea, 70 

 Eumalacostraca. 568*, 581 

 Euphcmsia, 568, 595, 599 

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



603 

 E>i/i/ii-o*i//ie., 468 

 Euphyllopoda, 596 

 Euptfctella, 120 

 Enpomatus, 485 

 Euryalida, 417, 420, 421 

 Eurypterida, 662*, 666, 668, (573, 678 

 Eurypterus fischeri, 668 

 Euscorpjo — See Buthf/s 



