INDEX 



675 



587; o( Antedon rosacea, 545 ; otAsterias, 

 developmeut of, iu sulphooyauide of potas- 

 sium, 483 ; of Balanoglossiis davigerus, 

 570 ; of Callidina russeola, 418 ; of 

 Cerebratulus lacteus, constitution of, 126 ; 

 of Clavdina, 632 ; of Ctenophora, constitu- 

 tion of, 98 ; of Oynthia partita, 610 ; of 

 Dentaliuin, maturation of, 325 ; of 

 Distaplia, 632 ; of Dolichoglossus kowal- 

 evsMi, 582 ; of Echiuoidea, methods of 

 obtaining, 505, 506; of Hydromedusae, 

 constitution of, 98 ; oWphiothrixfrac/ilis, 

 485 ; of Planocera, 103 ; of Polygordius, 

 129 ; of Terebratulum septentrionalis, 408 



Egg-shell, outer, 3 (see Chorion) ; inner, 3 

 (see Vitelline membrane) 



Elaeoblast, formation of, iu embryo of Salpa, 

 636 



Blasmobranchii, 456, 564, 569 



Elevator muscles of larva of Polygordius 

 appendiculatus, 148 



Bmbolobranchiata, .221 



Embryo, definition of, 19 ; formed from 

 larva, 26 ; of Amphiura squamata, 498 ; 

 of Vertebrata, compared with Coelenterata, 

 53 



Embryology, scope of, 1 



Embryonic area, in egg of Blatta, 261 ; in 

 egg of Diptera, 266 ; in egg of Donacia, 

 249 ; in egg of Doryphora, 261 ; in egg 

 of Hemiptera, 266 ; in egg of Lepisma, 

 264 ; in egg of Odonata, 266 ; in egg of 

 Scolopendra, 283, 284 



Embryonic phase of development, definition 

 of, 19 ; interpretation of, 26, 655, 656 



Endoderm, definition of, 53 ; formation of, of 

 Agdena, 224 ; of Astacus, 180 ; in Cere- 

 bratulus lacteus, 119 ; in Clepsine, 161 ; 

 in Donacia, 248 ; of Euphausia, 192 ; 

 iu Hmnarus, 191; in Lepisina, 264; iu 

 Limulus, 236 ; in larva of Membranipora, 

 388 ; in Neplidis, 161 ; iu Palaemoii, 

 192 ; in Pallene, 243 ; in Peripatus 

 capensis, 170 ; in Phascolosoma, 375 ; in 

 Planocera, 109 ; in Polyphemus, 194 ; in 

 Scolopendra, 282 ; in Scorpion, 240 ; in 

 Tubularia, 55 



Endoderm lamella, erroneous theory of forma- 

 tion of, 64 ; formation of, mAurelia, 73 ; 

 in medusa of Podocoryne, 61 ; in medusa 

 of Tubularia, 68 



Eudodermal plate of Astacus, 189 



Bnilodermic groove in embryo of Astaev^, 

 181 



Endodermic streaks in embryo of Donacia, 

 254 



Eudopodite of antenna in Astacus, 186 



Endostyle, formation of, in \w\& oi AmpM- 

 oxus lanceolatus, 596 ; in Cyathozooid 

 einbryo of Pyrosonm, 635 ; in Pacific 

 Tornaria, 581, 582 ; in tadpole of simple 

 Ascidians, 620 



Enteleohy, 451, 483 ; definition of, 20 ; 

 theory of, 526 

 ■VOL. I 



Euteropneusta, 568, 592, 605, 606, 608, 

 646, 662 ;. development of, 569-586 



Entouiscidae, 219 



Ephemeridae, 655 



Ephemeroptera, 245, 272, 287 



Ephydatia, development of gemmule of, 47-50 



Bphyra larva oiAxirelia, 72 ; of Pdagia, 74 



Epibole, definition of, 92 ; in embryo of 

 Seroe, 92 ; in embryo of Patella, 297 ; 

 in embryo of Peripatus capensis, 171 ; 

 in embryo of Planocera, 109 



Bpicardial tubes, formation of, in Oiona 

 intestinaMs, 626 



Epigastric coelom in larva of Asterias, 469 ; 

 in larva of Asterina gibbosa, 475, 480 



Epimorpha, 284 



Bpinenral canals, formation of, in Echinus 

 esculentus, 514 



Bpineural flaps, formation of, in larva of 

 Ophiothrix fragilis, 495 



Bpineural ridges, formation of, in larva of 

 Echinus esculentus, 514 



Bpineural ring-caual, formation of, inSynapta 

 vivipara, 539 



Bpineural roof, formation of, in Ophiothrix 

 fragilis, 495 



Bpineural sinus, formation of, in Donacia, 

 254, 255 



Bpineural space, formation of, in larva of 

 Echinus esculentus, 514 ; in larva of 

 Ophiura brevispina, 502 



Bpineural veil, formation of, in larva of 

 Echinus esculentus, 514 



Epipodite in Limidus, 237 



Bpistome of larva of Pedicellina, 400 



Equating division, definition of, 6 



Equatorial plate, definition of, 6 



Brichthoidina stage in development of 

 Stomatopoda, 217 



Brichthus stage in development of Stomato- 

 poda, 218 



Bruciform type of Insect larva, 287 



Esperia, 47 ; development of, 44-46 



Bucarida, 177 



Euphausia, 192 



Buphausidacea, 177, 203, 208 



Eupomatus, 165, 313 ; development of, 164, 

 155 



Excretory canals, formation of, in Beroe, 96 



Excretory organs, formation o{,m Amphioxus 

 lanceolatus 600 {see also Kidney and 

 Nephridium) ; in Ascaris megaZocephala, 

 447 ; in Astacus, 188 ; in Qallidina rus- 

 seola, 426 ; in Peripatus capensis, 124 



Exopodite of antenna in Astacus, 186 



Exopodites of limbs of prosoma in Limulus, 

 236 



Experimental embryology, aim of, 29, 

 30 ; of simple Ascidians, 630, 631 ; 

 of Asteroidea, 482-484; of Calcareous 

 sponges, 51 ; of Coelenterata, 96-98 ; of 

 Echiuoidea, 522-529 ; of Mollusca, 305- 

 309, 329-332; of Nematoda, 448-454; 

 of Nemertinea, 124-126 



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