698 



INDEX 



Dorsal cirrus, 265 ; lamina, 680 ; organ, 

 334 ; pores, 287 ; shield, 334 and n. ; 

 siphon, 574; tubercle, 672 



"Dorsal" plates of Ophiuroidea, 639 



Dorsolateral antennae, 240 



Drag line, 533 



Dreissensia, 546, 582 



Drift net of Physalia, 166 



Drosophila, 437 



Ductus communis, 210, 211, 230 



Dysderciis, 476 



Dytisciis, 429, 439, 444, 493; fnar- 

 ginalis, 447 



Earthworms, 287 



Ecardines, 618 



Ecdyonurus, 481 



Ecdysis, see Moulting 



Echinaster sentus, 636 



Echinohothrium, 229 



Echinocardimn, 648 ; cordatum, 648 



Echinocyamus, 647 ; pusiUus, 647 



Echinodermata, 623 ; 2, 136, 142, 143 



Echinoidea, 640; 623 



Echinopluteus, 633 



Echinorhynchus proteus, 259 



Echinosphaera, 659 



Echinus, 647. See also E. escidentus; 

 esculentus, 640, 644; miliaris, 641, 

 642 



Echiuroidea, 301 ; 261 



Echiurus, 302; 301, 302 



Ectoderm, 128; i, 129, 130, 132, 136, 

 139, 141, 142, 143, 146, 150, 152, 

 156, 176, 183, 201, 204, 235, 237, 

 244, 281, 282 



Ectoneural system, 630 ; of Crinoidea, 

 656 



Ectoplasm, 12 ; 19, 44, 68, 70, 76, 95, 

 102, 104, 105 



Ectoprocta, 613; 611 



Edrioaster, 658 ; bigsbyi, 657 



Edrioasteroidea, see Thecoidea 



Edivardsia, 187; 188 



Effectors, 137, 138 



Efferent canals, see Exhalant canals 



Egg sac, 373 



Eggs and Egg laying, of Arachnida*, 

 524, 529, 533; of Arthropoda, 316; 

 of Balanoglossus, 668 ; of Chaeto- 

 gnatha, 619, 620; of Ciona, 675 ; of 

 Cnidaria*, 152, 156, 159, 162, 174, 

 178, 183; of Crustacea*, 352, 356, 

 359, 362, 367, 373, 376, 379, 385, 



410; of Ctenophora, 196; of Dino- 

 philus, 296 ; of Echinodermata, 630, 

 631 ; ofHirudinea,30o; of Insecta*, 

 452, 468, 471, 472, 476, 478, 481, 

 483. 484, 485, 486, 491, 500, 503, 

 504n., 511, 513; of /z//u^, 424 ; of 

 Myriapoda*, 422, 424; of Mol- 

 lusca*, 555, 561, 566, 572, 585, 

 598; of Nematoda*, 250, 254, 255, 

 256, 257, 259 ; of Oligochaeta, 289 ; 

 of Pantopoda, 539; of Peripatus, 

 321 ; of Platyhelminthes*, 210, 212, 

 215, 219, 220, 222, 228; of Poly- 

 chaeta, 275 ; of Rotifera, 241 ; of 

 Thaliacea, 685 



Eimeria, 89 ; 96 ; schubergi, 27. 89, 

 90 



Ejaculatory duct, 447 



Elasipoda, 652 



Eledone, 596 



Eleutherozoa, 658; 625 



Elytra, of Coleoptera*, 429, 492, 495 ; 

 of Polychaeta, 268 



Embia major, 471 



Embioptera, 471 



Embryo, 144 



Embryology (.?. str.), 145 ; of Arach- 

 nida, 516, 520; of Arthropoda, 

 316; of Asterias, 631 ; of Brachio- 

 poda, 617, 618; of Chaetognatha, 

 619, 620; of Chordata, 660; of 

 Ciona, 675 ; of Coelenterata*, 152, 

 156, 162, 178 n., 196; of Crustacea, 

 352; of Echinodermata, 631; of 

 Insecta, 452, 453, 457, 458, 459 ; of 

 Lumbricus, 289, 290; oi Peripatus, 

 321; of Polyzoa, 611; of Tardi- 

 grada, 450 ; of Thaliacea, 685 ; of 

 trochospheres, 281 



Embryonic fission, see Polyembryony 



Enchylema, 12 



End gut, see Hind gut 



End sac, 315, 346 



Endites, 337, 338 



Endocyclica, 647 



Endoderm, 128; i, 129, 130, 136, 

 139, 141, 142, 143, 281 ; of Coelen- 

 terata*, 146, 147, 150, 152, 155, 

 158, 161, 174, 181, 182, 183, 195. 

 See also Enteron 



Endoderm lamella, 150; 179 



Endomixis, 35; 26 



Endophragmal skeleton, 340 



Endoplasm, 13 



