INDEX 



639 



Echinoid stage in the development of a 

 Holothuroid, 615 



Eehinoidea, 431, 503 f. ; compared with 

 Holothuroidea, 560 ; with Blastoidea, 

 580 ; mesenchyme of larva, 604 ; de- 

 velopment of, 607, 608, 609, 613, 614 ; 

 phytogeny of, 622 



JEch inola ijpas, 554 



Echinometras, 542 



Echinomuricea, 356 



Echinoneus, 553, 553 



Echinonidae, 553 



Echinopluteus, 607, 608 ; metamorphosis 

 of, 613, 614 



Echinosphaerites, 598 ; E. aurantium, 598 



Echinothuriidae, 530, 531, 532, 535, 558, 

 560 



Echinus, 533, 539 ; E. esculentus, 504 f. 

 505, 507, 511-515 ; locality, 504 ; 

 spines, 506 ; pedicellariae, 506 ; corona, 

 511 ; periproct, 513 ; peristome, 513 ; 

 alimentary canal, 516 ; water-vascnlar 

 system, 516 f. ; nervous system, 518 

 f. ; sphaeridia, 524 ; perihaemal spaces, 

 524 f. ; genital system, 528 ; blood- 

 system, 529 ; larva, 607 ; E. acutus, 

 540 ; pedicellariae, 509 ; E. alexandri, 

 pedicellaria, 510 ; E. elegans, 539, 540 ; 

 pedicellariae, 510 ; E.microtuberculatus, 

 540 ; E. miliaris, 540, 542, 549 ; E. 

 norvegicus, 539, 540 



Economic uses of Foramiuifera, 69 f. 



Ectocoele, 367 



Ectoderm, 246 



Ectoplasm ( = ectosarc), 6, 46 f., 50; of 

 Amoeba, 5 ; of Rhizopoda, 51 f. ; of 

 Heliozoa, 71 f. ; of Radiolaria, 79 f. (see 

 also Extracapsular protoplasm) ; re- 

 generation of, in Radiolaria, 35 ; cf 

 Collozoum inerme, 76 : of Gregarines, 96 

 f. ; of Ciliata, 141 f. ; of Stylonychia, 

 140 ; of Suctoria, 159 ; of Trachelius 

 ovum, 153 ; of Vorticella, 156 



Ectopleura, 268 



Ectosarc see Ectoplasm 



Ectosome, 170 



Ectyoninae, 217 



Edrioasteroidea, 5S0, 596 



Echvardsia, 328, 366,368, 376; E. alhnani, 

 377; E. beautempsii, 376, 377; E, 

 carnea, 377 ; E. goodsiri, 377; E. tecta, 

 377 ; E. timida, 376, 377 



Edwardsia stage of Zoantharia, 367 



Edwardsiidae, 377 



Edwardsiidea, 367, 371, 375, 395 



Egg, fertilised, 31 ; of Metazoa, 32 f. ; of 

 bird, 32 ; various meanings of, 34 ; of 

 affected Silkworm moths transmitters of 

 pebrine, 107 



Ehrenberg, on Protozoa, 45 f. ; on skele- 

 tons of Radiolaria, 87 f. ; on Ciliata, 

 146 ; on Suctoria, 162 



Eimer and Fickert, on classification of 

 Foraminifera, 58 n. 



Elasipoda, 569, 571, 577, 578 



Electric, currents, stimulus of, 19, 22 ; 

 shock, action on Amoeba, etc., 7 



Eleutheria, the medusa of Clavatella, 265 



Eleutheroblastea, 253 



Eleutheroplea, 279 



Eleutherozoa, 430, 560, 577, 579, 583 ; 

 development of, 602 f. ; larva of, 605 ; 

 phytogeny of, 621, 622 



Elevator muscles of compasses of Echinus 

 esculentus, 527 



Ellipsactinia, 283 



Ellis, 167 



Embryonic type of development, 601 



Encystment, 37, 39 ; of animal cells, 37 ; 

 of vegetal cells, 37, 39 ; growth during, 

 37 ; of zygote, general in Protista, 34 ; 

 of Rhizopoda, 57 ; temporary, of Rhizo- 

 poda, 57 (see also Hypnocyst) ; of 

 Heliozoa, 72 f. ; of A ctinophrys, 72 ; of 

 Actinosphaerium, 73 f. ; of Proteomyxn, 

 88, 89 ; of Myxomycete zoospores, 

 90 f. ; of Sporozoa, 96 f. ; of zygote of 

 Sporozoa, 95 f. ; of Gregarines, 95 f., 

 98 ; of Lankesteria, 95 ; of Monocystis, 

 96 ; of Coccidiidae, 97 f. ; of Coccidium, 

 100, 101 ; of archespore or pansporo- 

 blast of Myxosporidiaceae, 107 ; of Fla- 

 gellates, 115, 117 f. ; of zygote of Bodo 

 saltans, 117 ; of Opalina, 123 f. ; of 

 oosperm of Volvocaceae, 127 f., 129 f. ; 

 of Dinoflagellates, 131 ; of Ciliata, 147 ; 

 of Colpoda cucullus, 147, 153 



Endocyclica, 529, 530 f., 556, 559 



Eudoderm, 246 



Endogamy, in Amoeba coli, 57 ; in Actino- 

 sphaerium, 73 f., 75- (diagram) ; in 

 Stephanosphaera, 128 



Endogenous budding in Suctoria, 160 f., 

 162 



Endoparasitic Suctoria, 86, 160 f. 



Endoplasm ( = endosarc, q.v.), 6 see also 

 Intracapsular protoplasm (Radiolaria) 



Endoral, cilia, 139 ; undulating membrane, 

 139 



Endosarc ( = endoplasm), 6 ; of Gregarines, 

 95 f. ; branching, of Noctilum, 110, 

 133 ; of Loxodes and Trachelius, 144 

 153 ; of Ciliata, 143 f. ; of Stylonychia, 

 140 ; of Suctoria, 161 



Endosphaera, 159, 161 



Energy, changes of, in living organism, 8, 

 13 ; sources of, 13 f. 



Entocnemaria, 394 



Entocoele, 367 



Entosolenia, 66 



Entz, Geza, on Choanoflagellates, 121 n. : 

 on structure of Vorticella, 157 n. 



Eocene Foraminifera, 70 



Eolis (=Aeolis), 248 



