INDEX 



763 



Dollingeria, 66 



Donax, 657 



Doris, 684, 687, 691 



Doris (Archidoris) tuberculata, 687 



Dorsal cirri, oi An fdon, 373 



Dorsal organ, of Apus, 485 



Dorsal pores, of Earthworm, 418 



Dracuncvlus, 283, 289 



Dragon flies, 585 



Drepanidium, 78 



Drilophaga, 309 



Dromia, 524, 555 



Dytiscus, 596 



E 



E 



IAR, 37 



Ear- shells, 683 



Earthworm See Lumbricus 



Earthworms, 403 



Earwigs, 584 



Ecclyses, of Apus, 497 



Ecliinococcn*, 246, 231, 262 



Echinocyamtt* />t/xi//ttx, 398 



Echinodertdai, 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, 384 : 

 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 : 

 Echinopredium, 396 : Ethology, &c., 



399 ; Self -mutilation and regeneration, 



400 : Affinities, 401 



Ichinoidea* example, 363 : Distinctive 

 characters and classification, 379 : 

 Apical system, 384 : Modifications of 

 form, 387 : Dermal branchiae, 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 



Echinopwdium, 396 



Echirwrhynchus, 289, 290, 291, 292 



ECHINUS, 363 : General external features, 

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

 lantern, 366 : Nervous system, 367 : 



Arabulacral system, 367 : Ovoid gland, 



367 : Enteric canal, 367 : Ccvlome, 368 : 

 Blood- vascular system. 368 : Repro- 

 ductive organs, 368 : Development, 



368 : Systematic position, 381 

 E<-lnnni*, 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 : Vibraeula, 324 : 

 Reproduction and development, 325 : 

 Ethology and distribution, 326 



E'lH-ardxia, 185, 187, 188, 189 



Eggs See Development 



E "nutria, 78 



Elasipoda, 379, 393 



Eledone moxchata, 744 



Elephant's tusk shells, 705 



Elk-horn coral, 145 



Elytra, of Cockroach, 574 : Polychasta, 



432 : Coleoptera, 587, 591 

 Embryology, 3* See Development 

 Empis, 595 

 Emulsions, 32 

 Endites, 488 

 Endoderm, 21* 



Endoderm-disc, of Antaeus, 516 

 Endoderm lamella, 126, 128* 

 Endophragmal system, of Astacus, 



499 



Enclopodite, 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 



Enteroco?le, 359 



Entomostraca, 521, 547, 548, 551 



Entomlm, 661 



Environment, 9* 



Eocene, 7 



AW/*, 684, 691, 693 



Epeira diadema, 615 



Ephdota, 91, 92 



Ephemera, 584, 592 



Ephippium, 551 



Epliyra, 171 



Ephyrula, of Aurelia, 161*, 162 



Epiblast, 21* 



Epicranium*, 572 



Epidermis, 22, 29 See Body-wall 



Epimerite of Gregarinida, 77 



Epi pharynx, 592 



Epiphragm, 686 



Epiphysis, of Sea-urchin, 366 



Epipodite, 501* 



Epipodium, 688 



Epistoma, of Astacus, 499 



