INDEX 



763 



Dollinyeria, 66 



Donax, 657 



Doris, 684, 687, 691 



Doris (Archtdoris) tuberculata, 687 



Dorsal cirri, of Anfedoit, 373 



Dorsal organ, of Apns, 4S5 



Dorsal pores, of Earthworm, 418 



JJraonwulus, 283, 289 



Dragon flies, 585 



Drepanidium, 78 



Drilophaga, 309 



Dromia, 524, 555 



Dytixcus, 596 



E. 



I AH, 37 

 Ear- shells, 683 

 Earthworm See 

 Earthworms, 403 

 Earwigs, 584 

 Ecc 



Anabulacral system, 367 : Ovoid gland, 



367 : Enteric canal, 367 : Ccelome, 368 : 

 Blood -vascular system. 368 : Repro- 

 ductive organs, 368 : Development, 



368 : Systematic position, 381 

 Echiurua,W, 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 



Edu-ardia, 185, 187, 188, 189 



Eggs See Development 



Eimerid, 78 



Elasipoda, 379, 393 



Eh ilone moschata, 744 



Elephant's tusk shells, 705 



Elk-horn coral, 145 



Elytra, of Cockroach, 574 : Polychreta, 



Holothuroidea-For references to this see under Echinoidea, p. 



763. 



uo4 : Ambulacral system, 393 : Blood- 

 vascular system, 394 : Enteric canal, 

 394 : Nervous system, 395 : Sexes, 395 : 

 Development and metamorphosis, 396 : 

 Echinopsedium, 396 : Ethology, &c., 



399 : Self -mutilation and regeneration, 



400 : Affinities, 401 



Hchinoidea; 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 



Echinopcedium, 396 



Echinorhynchn*, 289, 290, 291, 292 



ECHINUS, 363 : General external features, 

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

 lantern, 366 : Nervous system, 367 : 



-ii^, 3^0*, 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 



Eolis, 684, 691, 693 



Epeira diadema, 615 



Ephelota, 91, 92 



Ephemera, 584, 592 



Ephippium, 551 



Ephyra, 171 



Ephyrula, of Aurelia, 161*, 162 



Epiblast, 21* 



Epicranium*, 572 



Epidermis, 22, 29 See Body-wall 



Epimerite of Gregarinida, 77 



Epipharynx, 592 



Epiphragm, 686 



Epiphysis, of Sea-urchin, 366 



Epipodite, 501* 



Epipodium, 688 



Epistoma, of Astacus, 499 



