542 



INDEX 



life-history, 72; J), ringeri ( = D. pul- 

 monale), 63 ; JJ. signatum, life-history, 

 72 ; D. sinense, 70 ; D. spathulatum, 

 63 ; JJ. squamida, life-history, 72 ; JJ. 

 trigonocephaluvi, life -history, 72 ; JJ. 

 westermanni ( = 1). pulmonale), 63 



Distyla, 225 



JJithyridium, 91 



JJitrupa, 301 



JJiurella, 225, 226 



Dochmius, 133, 135, U2, 160, 163 ; JJ. 

 cemua, 143 ; JJ. duodenalis, 143, 163 ; 

 D. stenocephalia, 143 ; D. trigonocephala, 

 143 



JJodecaceria, 287, 326, 327 



Dog, parasites of, 80 f., 90, 125, 140, 142, 

 143, 145 



Dolichoplana, 37, 42 



Domestic animals, Trematodes of, 67, 68, 

 70, 72 ; Cestodes of, 81, 89 ; Nema- 

 todes of, 139 f., 163 ; Acanthocephala 

 of, 184 



Domopora, 531, 532 



Dorsal ciliated organ, 247, 254, 256 



Dorsal pores, 348 



Dorylaimus, 131, 157, 160 



Dracunculus, 131, 135, 147 



Drepanidotaenia, 91 ; D. auatiua, life- 

 history, 84, 85 ; JJ. gracilis, D. infun- 

 dibtdiformis, JJ. setigera, life-history, 84 



JJrepanophorus, excretory system, 108 ; 

 British species, 110 



Drilophagidae, 224 



Drilophagus, 204, 210, 212, 224, 227 



Duges, on Planarians, 6, 10 ; on Oligo- 

 chaeta, 368 



Dnjardin, on Rotifers, 198 ; on Gastro- 

 tricha, 231 ; on Kinorhyncha, 236 



Dnplicatnre, 499, 500 



JJuthiersia, 91 



Dwarf males, of Myzostoma, 344 ; of 

 Gephyrea, 438 



Ear-cockle, 155 



Earthworms, 347, 365 ; senses, 354 ; food, 

 359 ; effect on the soil, 368 ; distribu- 

 tion, 369 f.; classification, 380 f.; British, 

 390 see also Oligochaeta 



Ebrard, on Hirudinea, 393 



Kcheneibothriwn, 91 



Echinella, 73 



Kchinobothrium, 74, 75, 85, 91 



Kchinococcus, 80, 83 



Echinocotyle, 91 



hkhinoderes, 236 f., 236 



Echinorhynchidae, 182 



Echinorhynchus acus, 175, 179 ; E. angus- 

 tatus, 174, 183; E. clavula, 183; E. 

 haeruca, 176 ; E. linstoivi, 183 ; E. 

 lutzii, 183 ; E. monilifopnis, 183 ; E. 

 proteus, 174, 180, 181, 182, 182 



Echinosiphon, 424, 429 



Echiuroidea, 241 n., 412, 434, 446 ; an- 

 atomy, 434 f. ; classification, 44" ' de- 

 velopment, 439 ; parasites, 444 ; habits, 

 442 



Echiurus, 336, 411, 435, 440, 44 1 : de- 

 velopment, 439 



Eckstein, on Rotifers, 198 



Eclipidrilus, 380 



Economic uses, of Polychaeta, 296, 297 



Ectocyst, 469, 470, 523; of Phylact 

 laemata, 496 f., 503 



Ectoderm, of Mesozoa, 93, 95 



Ectoparasitic Trematodes, 4, 52, 53 



Ectoprocta, 4~<?, 518 ; structure, 469 ; 

 lophopbore, 476 ; reproduction, 506 f. ; 

 larva, 509, 510, 511 ; compared with 

 Entoprocta, 488 



Effects, of parasites on their hosts, 56, 68, 

 69, 80, 94, 162 



Eggs, of Leptoplana, 10, 16 ; of Polyclads, 

 28 ; of Triclads, 33, 40 ; of Rhabdo- 

 coels, 47, 48 ; of Termatodes, 52 ; of 

 ectoparasitic Trematodes, 54, 58, 60, 61; 

 of endoparasitic Trematodes, 63, 69 ; of 

 Cestodes, 87 ; of Orthonectidae, 95 ; of 

 Nemertinea, 116 ; of Nematoda, 185, 

 162 ; of Gordius, 171 ; of Acantho- 

 cephala, 179 ; of Chaetognatha, 189 ; 

 of Rotifera, 200, 216 f. ; of Gastro- 

 tricha, 234 ; of Nereis, 256 ; of Poly- 

 chaeta, 274, 275 ; of Phyllodocids, 314 ; 

 of Scoloplos, 321 ; of Myzostoma, 343 ; 

 of Polyzoa, 506, 507 



Ehrenberg, on Turbellaria, 3, 6 ; on Roti- 

 fers, 198, 220 n., 228 ; on Gastrotriclm, 

 231 ; on Polyzoa (Bryozoa), 475 



Eichhorn, on Rotifers, 197 



Eisen, on Oligochaeta, 380, 390 



Eisig, on Capitellidae, 373 ; on Bonellia, 

 443 



JJlectra, 481, 518, 523, 530 ; larva, 509, 

 510 ; variation, 516 



Elytra, of Polynoids, 265, 292, 294, 298, 

 299, 309, 310, 311 ; phosphorescent, 

 295, 296 ; as brood -pouch, 275 ; of 

 Aphroditidae, 266 ; arrangement of, 309 ; 

 of Sigalionina, 313 



Enantia, 16 n., 19 



Enantiidae, 19 



Enchelidium, 157 



Enchytraeidae, 359, 360, 361, 366, 367, 

 370, 375 



Enchytraeus, host of Gordius, 173 



Encotylabe, 73 ; eggs of E. pagelli, 58 



Endocyst, 471 



Endoderm, of Mesozoa, 93, 95 



Endoparasitic Trematodes, 4, 52, 62 



Enopla, 109 



Enoplidae, 157 



Enoplus, 157, 160 



Entalophora, 518, 532 



Eateroploea, 224 



