542 



INDEX 



life-history, 72; D. rinyeri ( = />. pul- 

 monale), 63 ; 1). siyiiatum, life-history, 

 72 ; D. sitiense, 70 ; D. spathulatum, 

 63 ; D. sqtuimnla, life-history, 72 ; />. 

 trigonocephaltim, life-liistory, 72 ; D. 

 toestermatini (=/>. pulmoitale), 63 



Di'sfyfa, 235 



Dithyridium, 91 



Ditrupa, 301 



Diurella, 225, 226 



Dochmius, 133, 135, 7-f2, 160, 163 ; D. 

 cernitn, 143 ; 7>. dnodenalls, 143, 163 ; 

 Z>. stenoceplnda, 143 ; Z>. triyonocephala, 

 143 



Dodecaceritt, 287, .?2, 327 



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

 143, 145 



Dntichoplana, 37, 43 



Domestic animals, Trematodes of, 67, 68, 

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

 todes of, 139 f., 163 ; Aeanthocephala 

 of, 184 



Jtomopom, 531, 532 



Dorsal ciliated organ, 247, 254, 256 



Dorsal pores, 348 



Dorylaimns, 131, 157, 160 



Draamculus, 131, 135, 147 



J)repanidotae>ii((, 91 ; D. anati)ui, life- 

 history, 84, 85 ; D. yrncilis, D. infun- 

 dibiiUformis, 1). setiyera, life-history, 84 



Jlrepatwphofus, excretory system, 108 ; 

 British species, 110 



Drilophagidae, '334 



Itrilophayus, 204, 210, 212, 324, 227 



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

 chaeta, 368 



Dujanlin, on Rotifers, 198 ; on Gastro- 

 tricha, 231 ; on Kinorhyucha, 236 



Duplieature, 499, 500 



Inuhiersia, 91 



Dwarf males, of Myzostoma, 344 ; of 

 Gephyrea, 438 



EAR-COCKLE, "i55 



Earthworms, 347, 365 ; seiises, 354 ; food, 

 359 ; effect on the soil, 368 ; distribu- 

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

 390 see also Oligochaeta 



Ebrard, on Hirudinea, 393 



Eclieiteilmtli riitm, 91 



Jirhi ne flu, 73 



KchiHotffitki-inw, 91 



/:</, ;,io,;,,rits, 80, 83 



Kchi'itooityle. 91 



Kchiaotlens, 236 f., 236 



Echinorhynehidae, 183 



Jicliiiufrhitnr.il HS HCHX, 175, 179 ; K. anyiift- 

 tutn.f, 174, 1M\ K. ductile', IX.) ; K. 

 linn-lien, 176 ; K. linstuwi, 183 ; K. 

 liitzii, IS.} ; E. m i m'di for mis, 183 ; K. 

 l>foteus, 174, 180, 181, 182, 182 



Echinosiplion, 424, 429 



Echiuroidea, 241 11., 412, 434, 446 ; an- 

 atomy, 434 f. ; classification, 440 ; de- 

 velopment, 439 ; parasites, 444 ; habits, 

 442 



Jichiurus, 336, 411, 435, 440, 441 ; de- 

 velopment, 439 

 Eckstein, on Rotifers, 198 

 Edipidrilns, 380 



Economic nses, of Polychaeta, 296, 297 



Ectocyst, 469, 470, 523; of Phylacto- 

 laemata, 496 f., 503 



Ectoderm, of Mesozoa, 93, 95 



Ectoparasitic Trematodes, 4, 52, 53 



Ectoprocta, 475, 518 ; structure, 469 ; 

 lophophore, 476 ; reproduction, 506 f. ; 

 larva, 509, 510, 511 ; compared with 

 Entoprocta, 488 



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

 69, 80, 94, 162 



Eggs, of Leptuplana, 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, 135, 

 162 ; of Gordins, 171 ; of Aeantho- 

 cephala, 179 ; of Chaetognatha, 189 ; 

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

 tricha, 234 ; of Xereis, 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 Gastrotricha, 

 231 ; on Polyzoa (Bryozoa), 475 



Eichhorn, on Rotifers, 197 



Eisen, on Oligochaeta, 380, 390 



Eisig, on Capitellidae, 373 ; on Jhmellia, 

 443 



Electro, 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 



Knchelidium, L r >7 



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

 370, 375 



Encliytraeiut, host of tinnitus, 173 



Kitattylahe, 73 ; eggs of E. jxcjelli, 58 



Endocyst, 471 



Endoderm, of Mesozoa, 93, 95 



Endoparasitic Trematodes, 4, 52, 62 



Enopla, 109 



Enoplidae, 157 



A'y, 157, 160 



Xiitttliiphorii, '~>1S, 532 



Eitteruploed, 2M t 



