540 



INDEX 



Colony, of Myrianida, 281 ; of Syllis \ 

 ramosa, 282 ; of Polyzoa, 466 



Colour of Polyclads, 20 ; of Land Planarians, 

 33; of Nemertinea, 102; of Polychaeta, 

 291, 314, 340 



Coluridae, 207, 225 



Colurus, 225, 22b 



Gomatxda, as host, 342 



Commensal, Polychaeta, 297 f., 323, 325 ; 

 Gephyrea, 428, 429 ; Polyzoa, 489 



Conn, on development of Gephvrea, 419 n., 

 441, 444, 447 



Gonoceros, 19 



Conochilus, 202, 203, 205, 215, 221, 226 



Conocyema, hosts of, 94 



Gonvoluta, 45 ; British species, 43, Ifi ; C. 

 henseni, pelagic habit, 43 ; C. roscqfensis, 

 assimilating tissue, 43 



Copepoda, on Polychaeta, 299 



Gopeus, 215, 224 



Coral reefs, Polychaeta in, 293 



Gorallina ( = Coralline Alga), 14, 488, 516 



Coralline, 465 



Coralline Crag, 465, 521 



Gorallobothrium, 91 



Gorethra, host of Gordius, 172 



Cori, on Phoronis, 451 f. 



Gomulites, 302 



Cotylea, 16 f., 17, 18 



Gotylogaster, 73 



Cotyloplana, 35 



Crater omorpha, as host, 282 



Crayfish, Temnocephala associated with, 

 53 



Creeper, 317 



Grepina, 450 



Cretaceous, Polyzoa, 520, 521 



Gribrilina, 518, 524, 528 



Crinoids, as hosts, 341 



Criodrilus, 3.">8, 366, 386 



Grisia, 471, 478, 479, 480, 507, 518, 531 



Crisiidae, 517 



Crisp, on Parasites, 164 



Gristatella, 494 f., 495, 499, 501, 503-505, 

 512, 518 ; attacked by Planarians, 486 ; 

 movements, 494, 496, 498 ; fission, 496, 

 506 ; statoblast, 502, 503 ; larva, 512 



Grossopodia, 302 



Crotchets, 266, 267, 305, 322 



Crustacea, parasites of, 174, 179, 182 



Gryptocelis, 19, 24 



Cryptocephala, 258, 303, 305; vascular 

 system, 252 ; prostoinium, 259 ; tenta- 

 cles, 263 ; eyes, 272 ; food, 296 



Cryptodrilidae, 357, 362, 373, 382 



Gryptodrilus, 372, 382 f. 



Gtenodrilus, 373 



Ctenophores, as hosts, 298 



Ctenostomata, 470, 477, 479, 480, 518, 

 532 ; occurrence, 478 ; in fresh water, 

 492 ; external characters, 480 ; repro- 

 duction, 507 ; larva, 511 ; relation to 



Phylactolaemata, 493, 502 f. ; lbs 



521 n. 

 Gucidlanus, 136, 142, 163 ; C. el eg an 



143, 161 

 Gucumaria, as host, 298 

 Cuenot, on Gephyrea, 416 n. 

 Cuticle, of Nemathelminthes. 125, 16f 



175 ; of Rotifera, etc., 205, 233, 236 ; 



Polyzoa, 470 see also Epidermis 

 Cuvier, on Oligochaeta, 352 ; on Gephy] 

 Cyclatella, 489 [41 



Cyclicobdella, 392 

 Gycloporus, 19, 22, 24 

 Gyclops, parasites of, 143, 148, 161 

 Cyclorhagae, 238 

 Cyclostomata, 477, 479, 506, 517, 518, 



525, 531 ; occurrence, 478 ; external 



characters, 480 ; ovicells, 507 ; repro- 

 duction, 507, 511 ; larva, 511 ; fossil, 



520, 521 

 Gydippe, as host, 298 

 Gylindroecium, 533 



Gylindrostoma, 46 ; British species, 50 

 Cyphonautes, 509, 510, 512, 520 

 Gyprina, Malacdbdella found on, 119 

 Gyrtonia, 224 

 Cyst, of Land - Planarians, 33 ; of My^ 



stoma, 342, 343, 344 ; (capsules), 



Aeolosoma, 370, 375 

 Cystibranchns, 395, 406 

 Cysticercoid-larva, 83, 85, 88 

 Cysticercus-laxva, 79, 80 ; list of, 83 ; C. i 



lulosae, 79, 80; C. pisif oralis, develop 



ment, 81, 85, 89 

 Cysticolous, Myzostomaria, 344 

 Cystoidotaeninae, 91 

 Cystotaeninae, 91 



Dactylogyrus, 73 



Dalyell, on habits of Turbellaria, 6, 10, 



20 ; on regeneration in Polychaeta, 283 ; 



on tubes of Polychaeta, 287 ; on Hiru- 



dinea, 405 n. ; on larvae of Flustra, 466 ; 



on Cristatella, 496 

 Danielssen and Korcn, on Gephyrea, 442, 



444 

 Daphnia, Rotifers attached to, 227 

 Dapidia, 225 



Darwin, on Earthworms, 354, 359, 368 

 Dasybranchus, 331 ; gill, 268 

 Dasychone, 338 ; gills, 261 ; eyes. 272 ; 



regeneration, 283 

 Dasydetes, 232, 235 

 Davaine, on Nematoda, 140, 145 

 Davainea, 91 ; J), friedbergeri, 84 ; IK 



Madagascar iensis, 80, 84 ; J), proglottina, 



life-history, 84 

 Davenport, on Umatella, 491 

 Davis, on Rotifers, 227 

 Deep-sea, Polychaeta, 300 ; Polyzoa, 478 

 Deinodrilus, 351, 384 

 Delagia, 478 n. 



