INDEX 



675 



587 ; of Ai/ff-t/ii/i rosacea, 545 ; of Asteri'.is, 

 development of, in sulphocyanide of potas- 

 sium, 483 ; of Balanoglossus clavigerus, 

 570 ; of Ctilliilinti russe< iJ a, 418 ; of 

 < ',-,Yh,-ittitlns lacteus, constitution of, 126 ; 

 of < In ci_ [ i,/i/, 632 ; of Ctenophora, constitu- 

 tion of, 98; of Cynthia partita, 610 ; of 

 Dentalium, maturation of, 325 ; of 

 Distaplia, 632 ; of Dofichogfossus koival- 

 eeskii, 5S2 ; of Echiuoidea, methods of 

 obtaining, 505, 506 ; of Hydromedusae, 

 constitution of, 98 ; ofOphiothrixfragilis, 

 485 ; of Planocera, 103 ; of PolygonUii*, 

 129 ; of Tercl'i-tit alii HI septentrionalis, 408 



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

 (see Vitelline membrane) 



Elaeoblast, formation of, in embryo of Salpn, 

 636 



Elasmobranehii, 456, 564, 569 



Elevator muscles of larva of P0///<//v>V/'.s 

 appendiculatus, 148 



Embolobranchiata, 221 



Embryo, deh'nition of, 19 ; formed from 

 larva, 26 ; of Am/ili i i< rn S'/tmi/n'ta, 498 ; 

 ofVertebrata, compared with Coelenterata, 

 53 



Embryology, scope of, 1 



Embryonic area, in egg of Blatta, 261 ; in 

 egg of Diptera, 266 ; in egg of DmHK'!", 

 249 ; in egg of Doryphom, 261 ; in egg 

 of Hemiptera, 266 ; in egg of Lepisma, 

 264 ; in egg of Odoiiata, 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 

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

 bratnli/s lacteus, 119 ; in Clepsine, 161 ; 

 in Doiiacia, 248 ; of Euphatisia, 192 ; 

 in Homarus, 191; in Lepisina, 264 ; in 

 Liiiiulus, 236 ; in larva of Membra nipon.i, 

 388 ; in Jfephelis, 161 ; in Palaemon, 

 192 ; in Pallcnc, 243 ; in Peripatus 

 capensis, 170 ; in Phascolosoma, 375 ; in 

 Planocera, 109 ; in Polyphemus, 194 ; in 

 Sc<'hi)>i:nilra, 282 ; in Scorpion, 240 ; in 

 Tubi'laria, 55 



Eudoderm lamella, erroneous theory of forma- 

 tion of, 64 ; formation of, in A urelia, 73 ; 

 in medusa of Podocoryne, 61 ; in medusa 

 of TuJ > i>/< T fa, 58 



Eudodermal plate of Astacus, 189 



Endodermic groove in embryo of 

 181 



Endodermic streaks in embryo of 

 254 



Eudopodite of antenna in Astacus, 186 



Eudostyle, formation of, in larva of A mphi- 

 o.-fus lanceolatits, 596 ; in Cyathozooid 

 embryo of Pyrosi.itn<t, 635 ; in Pacific 

 Tornaria, 581, 582 ; in tadpole of simple 

 Ascidians, 620 



Entelechy, 451, 483 ; definition of, 20 ; 

 theory of, 526 

 VOL. I 



Enteropneusta, 563, 592, 605, 606, 608, 



646, 662 ; development of, 569-586 

 Entouiscidae, 219 

 Ephemeridae, 655 

 Ephemeroptera, 245, 272, 287 

 Ephydiitia, development of gemnuile of, 47-50 

 Epbyra larva of Anrelia, 72 ; of /'</;//<-<, 74 

 Epibole, definition of, 92 ; in embryo of 



Beroe, 92 ; in embryo of Put, -II, i, 297 ; 



in embryo of I'cri^nlns capensis, 171 ; 



in embryo of Planocera, 109 

 Epicardial tubes, formation of, in dona 



!ittt'xtini<U,-i, 626 

 Epigastric coelom in larva of Asterius, 469 ; 



in larva of Asterina gibbosa, 475, 480 

 Epimorpha, 284 

 Epiueural canals, formation of, in Echinus 



esctili-iitH*. 514 

 K])ineuraly flaps, formation of, in larva of 



< >/,!/ i,ttln-i.i- fmyilis, 495 

 Epineural ridges, formation of, in larva of 



Echinus esc ufe lit us, 514 

 Epineural ring-canal, formation of, inSi/napta 



vivipara, 539 

 Epineural roof, formation of, in C>2)hiothrix 



fi'iigilis, 495 

 Epiueural sinus, formation of, in Donatia, 



25 1. 255 

 Epineural space, formation of, in larva of 



Kfliiiiiis esculentus, 514 ; in larva of 



Op/ti" i-" '< vispina, 502 

 Epineural veil, formation of, in larva of 



Echinus esculentus, 514 

 Epipodite in Li>iin/its, 237 

 Epistome of larva of J'cificflliiin, 400 

 Equating division, definition of, 6 

 Equatorial plate, definition of, 6 

 Erichthoidina stage in development of 



Stomatopoda, 217 

 Erichthus stage in development of Stomato-- 



poda, 218 



Eruciforni type of Insect larva, 2.^7 

 Esperia, 47 ; development of, 44-46 

 Eucarida, 177 

 Euphausia, 192 

 Euphausidacea, 177, 203, 208 

 Eupomatus, 165, 313 ; development of, 154, 



155 



Excretory canals, formation of, in Beroe, 95 

 Excretory organs, formation of, in A HIJI/I ioxus 



lanceolatus 600 (see also Kidney and 



Nephridiuni) ; in Ascaris megalocephala, 



447; in Asffici'd, 188; in CalHtlina rus- 



seola, 426 ; in Peripatus capensis, 124 

 Exopodite of antenna in Astacn.t, IM! 

 Exopodites of limlis of prosoma in Limulus, 



236 

 Experimental embryology, aim of, 29, 



30; of simple Ascidians, i' : '>0, 631; 



of Asteroidea, 482-484 ; of Calcareous 



sponges, 51; of Coeleiiteni -, '.'6-98; of 



i:. liinoidea, 522-529 ; of Mollusca, 305- 



309, 329-332; <>f Xematoda, 448-454; 



of Nemertinea, 124-126 



L' X -J 



