INDEX 



703 



Doll "tui /< ri'i, 66 

 Dona.c, 657 

 JJori*, 684, 687, 691 

 Doris (An-hidorix) tuberculata, 687 

 Dorsal cirri, oiAitfulon, 373 

 Dorsal organ, of Apii*, 485 

 Dorsal pores, of Earthworm, 418 

 Dracunnifus, 283, 289 

 Dragon flies, 58.3 

 _/>/-i /i'1/i/i/iii/ii, 78 

 Jtriln, ,),,(, in, 309 

 1'i-o/itia, 524. .",."i.") 

 596 



E 



, 37 



Ear- shells, 683 



Earthworm See L umbricun 



Karth worms, 403 



Earwigs, 584 



Ecdyses, of Apus, 497 



Eckinqcgccus, 246, 251, 262 



Echinocyamus pusillus, 398 



Echi,iodtrid<?, 296, 297 



Echinodermata, 346 : Examples, 346, 

 363, 369, 373 : Distinctive characters 

 and classification, 377 : Systematic 

 position of examples, 380 : General or- 

 ganisation, 381 : General form and 

 symmetry, 381 : Systems of plates, 38.4 : 

 Modifications of form, 384 : Cuelome, 

 392 : Ambulacral system, 393 : Blood - 

 vascular system, 394 : Enteric canal, 

 394 : Nervous system, 395 : Sexes, 395 : 

 Development and metamorphosis, 396 : 

 Echinopasdium, 396 : Ethology, &c., 



399 : Self-mutilation and regeneration, 



400 : Affinities, 401 



Echinoidea, example, 363 : Distinctive 

 characters and classification, 379 : 

 Apical system, 384 : Modifications of 

 form, 387 : Dermal branchite, 393 : 

 Stewart's organs, 393 : Ambulacral 

 system, 393 : Enteric canal, 394 : Ner- 

 vous system, 395 : Reproductive 

 organs, 395 : Development, 398 : Holo- 

 thuroidea, example, 369 : Distinc- 

 tive characters and classification, 379 : 

 Modifications of form, 390 : Ambulacral 

 system, 393 : Blood- vascular system, 

 394 : Enteric canal, 394 : Respiratory 

 trees, 394: Cuvieran organs, 394: 

 Nervous system, 395 : Reproductive 

 organs, 395 : Development and meta- 

 morphosis, 398 : Ethology, 399 



J'Ji-lii HO/HI -ilium, 396 



Echinorhynchus, 289, 290, 291, 292 



ECHINUS, 363 : General external features, 

 363, 364 : Corona, 364, 365 : Aristotle's 

 lantern, 366 : Nervous system, 367 : 



Ambulacral system, 367 : Ovoid gland, 



367 : Enteric canal, 367 : Oelome, 368 : 

 Blood- vascular system. 3(iS : Repro- 

 ductive organs, 368 : Development, 



368 : Systematic position, 381 

 Echiurus, 456, 458, 459, 460 

 Ectoderm, 21" See Body-wall. 

 Ectonephridia, 439" 



Ectoprocta, 320*, 321 : Structure of 

 body-wall, 323 : Alimentary canal, 



323 : Nervous system, 324 : Nephridia, 



324 : Avicularia, 324 : Vibracula, 324 : 

 Reproduction and development, 325 : 

 Ethology and distribution, 326 



EdwanUia, 185, 187, 188, 189 



Eggs See Development 



Eimeria, 78 



Elasipoda, 379, 393 



Eledone moschata, 744 



Elephant's tusk shells, 705 



Elk-horn coral, 145 



Elytra, of Cockroach, 574 : Polychseta, 



432 : Coleoptera, 587, 591 

 Embryology, 3* See Development 

 Enipi-i, 595 

 Emulsions, 32 

 Endites, 488 

 Endoderm, 21* 



Endoderm-disc, of Antaeus, 516 

 Endoderm lamella, 126, 128" 

 Endophragmal system, of A*f.ii<-tix, 



499 



Endopodite, 500* 

 Endoprocta, 312, 320*, 326 : Vestibule, 



326 : Nephridia, 326 : Cloaca, 327 : 

 Ganglion, 327 : Testes and ovaries, 



327 : Foot-gland, 327 : Development, 

 327 : Relationships, 328 



Endoskeleton, 29 



Endosternite, 606, 618 



Enteric canal See Digestive system 



Enteroccele, 359 



Entomostraca, 521, 547, 548, 551 



Entovalva, 661 



Environment, 9* 



Eocene, 7 



Eoli*, 684, 691, 693 



Epeira diadema, 615 



Ephelota, 91, 92 



Ephemera, 584, 592 



Ephippium, 551 



E/ihyra, 171 



Ephyrula, of Aurdia, 161*, 162 



Epiblast, 21* 



Epicranium*, 572 



Epidermis, 22, 29 See Body-wall 



Epimerite of Gregarinida, 77 



Epipharynx, 592 



Epiphragm, 686 



Epiphysis, of Sea-urchin. 3(i(i 



Epipodite, 501 



Epipodium, 688 



Epistoma, of Astams, 499 



