INDEX 



-03 



Dollinyeria, 66 



Donax, (i.'iT 



Dorix, 684, 687, 691 



Dori* (A i-rh/i/ni -ix) tuberculata, 687 



Dorsal cirri, of Au?<:doi/, :>7-'> 



Dorsal organ, of Apit*, 485 



Dorsal pores, of Earthworm, 41 S 



Draru)K;,/ns, 283, 289 



Dragon flies, 585 



Dr&panidium, 78 



rtfilrvr^hnnn 309 



J)iri/niri, 524, 555 

 596 



E 



E 



37 



Ear- shells, 683 

 Earthworm See Lunibricus 

 Earthworms, 403 

 Earwigs, 584 

 Ecclyses, of Apus, 497 

 Eckmococcus, 246, 251. 262 



Ambulacral system, 367 : Ovoid gland, 



367 : Enteric canal, :!(i7 : < '-lome, 368 : 

 Blood-vascular system. 368 : 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 



Edirardxia, 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 

 595 



Holothuroidea For references to this see under Echinoidea, p. 763. 



392 : Ambulacral system, 393 : Blood- 

 vascular system, 394 : Enteric canal, 

 394 : Nervous system, 395 : Sexes, 395 : 

 Development and metamorphosis, 396 : 

 Echinopeedium, 396 : Ethology, &c., 

 399 : Self-mutilation and regeneration, 

 4( 10 : Affinities, 401 



Echinoidea, example, 363 : Distinctive 

 characters and classification, 379 : 

 Apical system, 384 : Modifications of 

 form, 387 : Dermal branchia?, 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 



Echinopcedimn, 396 



Echinorhynchus, 289, 290, 291, 292 



ECHINUS, 363 : General external features, 

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

 lantern, 366 : Nervous system, 367 : 



x.naoproct, 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 



Enterocrele, 359 



Entomostraca, 521, 547, 548, 551 



Entovalva, 661 



Environment, 9* 



Eocene, 7 



Eolix, 684, 691, 693 



E/n.!m diadema, 615 



Ephelota, 91, 92 



Ephemera, 584, 592 



Ephippium, 551 



Efthyra, 1"! 



Ephyrula, of Aurdin, 161*, 162 



Epiblast, 21* 



Epicranium*, 572 



Epidermis, 22, 29 See Body-wall 



Epimerite of Gregarinida, 77 



Epiphai'ynx, 592 



Epiphragm, 686 



Epiphysis, of Sea-urchin. 366 



Epipoilite, 501* 



Epipodium, 688 



Epistoma, of Astacus, 499 



