544 



INDEX 



62 ; iu Cestodes, 86 ; in Nemertinea, 

 108, 109 ; in Rotifers, 213 ; in Urna- 

 tella, 491 



Fletcherodrilus, 382 



Floscularia, 200, 203, 205, 220, 221, 22G 



Flosculariaceae, 202, 211, 213, 220 



Flosculariidae, 201, 203, 205, 220 n., 221, 

 230 



Flukes, 51 



Flustra, 465, 466, 467, 472, 473, 477, 515, 

 51S, 526 ; avicularia, 482 



Flustrella, 467, 477, 518, 532 ; larva, 513 



Flustrina, o!8 



Food, of Turbellaria, 4 ; of Leptoplana, 

 10 ; of Folyclads, 24 ; of Trichwls, 37 ; 

 of Acoela, 43 f. ; of Rhabdocoela, 45 ; 

 of Trematodes, 4, 52, 62 ; of Temnoce- 

 phala, 53 ; of Cestoda, 5 ; of Nemer- 

 tinea, 115 ; of Ncmatodes, 131 ; of 

 Acanthocei>hala, 177 ; of Chaetognatha, 

 190 ; of Rotifera, 207, 212 ; of Gastro- 

 triclia, 234 ; of Polychaeta, 296 ; of 

 Earthworms, 359 ; of Leeches, 393, 

 406 f. ; of Gephyrea, 422, 443 ; of 

 Polyzoa, 467 



Foot, in Rotifers, 200, 201 



Foraminifera, as food of Polychaeta, 296 



Forceps, of Eunice, 270 



Forcipate, 210, 211 



Formula, for Nematoda, 138 



Foruix, 481, 617, 525 



Fossil, Polychaeta, 301 ; Polyzoa, 520 ; 

 Nemertinea, absence of, 119 



Fredericella, 476, 494, 502-505, 518, 519 ; 

 lophophore, 495 ; statoblast, 502, 503 



Frenzel, on Trematoda, 62 ; on Salindla, 

 96 



Fresh -water, Turbellaria, compared with 

 marine, 46 ; Nemertinea, 101, 118 ; 

 Polychaeta, 284 ; Polyzoa, 492 



Friend, on Oligochaeta, 388 n. 



Frogs, Trematodes of, 55, 58, 62, 71 f. ; 

 Nematodes of, 140, 142, 160, 173 



Frontal organ, of Nemertinea, 107 



Frontal palps, of Eunicidae, 318 f. 



Frontal ridge, 260 



FrullaniM, inhabited by Rotifers, 227 



Fulcrum, in Rotifers, 210 



Funicular tissue, 471 



Funiculus, 469, 471, 472, 499, 501 



Farcidaria, 216, 224, 226 



GAMBLE, on Platyhelminthes, 3 f . ; on 

 Mesozoa, 92 f. 



(taiiimarus, Rotifers attached to, 227 



Gapes, cause of, 144 



Gardiner, on development of Acoela, 44 n. 



Gasterostomatidae, T3 



Gtixfrroxtowinn, 7J ', Cf. fimbriatniii, life- 

 history, 72 ; G. ijracilexcens, 72 



(/'atit.ruf.iityle, 73 

 ii, 73 



Gastrothylax, 73 



Gastrotricha, 231 f. 



Gegeubaur, on Nemertine development, 

 99 



Gemellaria, 51S, 526 



Gemmation, 281 ; in Syllidae, 278 f., 279, 

 280 



Geobia, 37 



Geodesmus, 34, 42 



Geographical distribution, of Turbellaria, 

 32 f.; of Nemertinea, 117 ; of Chaeto- 

 gnatha, 191, 534 ; of Gastrotricha, 235 ; 

 of Polychaeta, 299 f. ; of Oligochaeta, 

 369 f. ; of Leeches, 405 ; of Gephyrea, 

 426 f., 432, 441 f. ; of Phoronis, 460 ; 

 of Polyzoa, 492 f., 504, 519 



Geonemertes, 101 ; description of G. chali- 

 cophora, 117 



Geoplana, 33, 38, 42 



Geoplanidae, 35, 42 



Geoscolicidae, 351, 362, 386 



Gephyrea, 411 f . ; history, 411 ; external 

 characters, 412, 420 f., 430 f., 434 f., 

 444 ; body -wall, 414, 436 ; digestive 

 system, 414, 422, 430, 436, 445 ; vas- 

 cular system, 415, 421, 436 ; respira- 

 tory system, 416 ; lx>dy- cavity, 416, 

 41-7, 445 ; nervous system, 416, 431, 

 437, 445 ; excretory system, 417, 423, 

 431, 437, 445 ; reproductive system, 

 418, 431, 437, 445 ; development, 419, 

 439 ; food, 422, 443 ; commensalism, 

 429 ; affinities, 241 n., 336, 445 f., 

 512 ; British, 449 



Germarium, of Rotifers, 216 



Germ-yolk-gland, 47 



Giard, on Oligochaeta, 368 



Gid, induced by Voenurus, 82 



Gigantorhynchidae, 183 



Giffantvrkynchus ffiyas, 174, 177, 184 \ 

 G. echinodiscus, G. spira, G. taenioides, 



1S4 



Gills, of Polychaeta, 252, 265, 268 f. ; of 

 Arenicola, 333 ; of Chlorhaemidae, 334 ; 

 of Cirratidus, 326 ; of Huphrosyne, 266, 

 318 ; of Euuicidae, 318 ; of Jfereis, 246 ; 

 of Sabelliformia, 260, 261 ; development 

 of, 275 ; of Sabella, 286 ; colour of, 294 ; 

 of Sabellaria, 263 ; of Serpulidae, 261 ; 

 of Sternaspis, 336 ; of Sigalionina, 313 ; 

 of Terebellidae, 329 ; of Oligochaeta, 

 352, 363 ; of Leeches, 396 ; of Gephyrea, 

 416 



Gizzard, in Rotifers, 199, 210 ; in Poly- 

 chaeta, 271, 307 ; in Oligochaeta, 358 ; 

 in Polyzoa, 477, 480, 532 f. 



Glands, on parapodia, 249 ; of Pliyllodocids, 

 314 ; oesophageal, 271, 272, 3*58 ; tul>e- 

 forming, 287, 304, 327 



Gland shields, 287, 304, 306 ; of Sabcllids, 

 337 ; of Terebellids, 327 



Glandular papillae, of I'olyg&rdius, 244 



