INDEX 



559 



Pectinaria, 285, 288, 330 ; of Polydora, 

 323 ; of Polynoids, 285 ; qf Panthalis, 

 313; of Sabella, 287 f.; of Sabellaria, 

 287 ; of Sabellidae, 337 ; of Serpulidae, 

 290, 339 f., 340 ; of Terebellidae, 286, 

 287, 288, 289, 327 f.; of Priapuloidea, 

 433 ; of Echiurus, 44 4 



Tube-forming glands, 304 



Tube-making, of Polychaeta, 287 f. 



Tubicolous Polvchaeta, 285, 300, 304, 306 



Tubifex, 351, "367, 369, 378; chaetae, 

 350 



Tubificidae, 350, 361, 366, 378 



Tubidipora, 518, 531, 532 



Turbellaria, 3 f. 



Turtles, parasites of, 142 



Tylenchus, 131, 154, 155, 157, 160, 163 



Tylosoma, 422, 423, 426, 430, 447 



Typhloscolecidae, 258, 291, 321 ; nuchal 

 organ, 273 n. 



Typhloscolex, 321 



Typosyllis, regeneration of head, 283 n. 



Udekem, D\ on Oligochaeta, 365 



Udonella, 73 ; U. caligorum, 55 ; U. 

 pollachii, eggs of, 58 



Udonellinae, 73 



Umbonula, 531 



U urinaria, 143 



Uncinate, 210, 211 



Uncini, of Polychaeta, 266, 267, 304, 305 



Uncus, 210 



Urnatella, 490, 493, 518 



Urobenus, 388 



Uteriporus, 4% 



Uterus, of Leptoplana, 8, 14 ; of Planaria, 

 38, 39 ; of Triclads, 40 ; of Rhabdo- 

 coela, 48 ; of Temnocephala, 54 ; of 

 Polystomum, 57, 59 ; of Diplozoon, 60 ; 

 of Didymozoon, 71 ; of Calliobothrium, 

 75 ; of Taenia, 79 ; of Schistocephalus, 

 86 ; in Bothriidae, 87 ; of Rotifers, 216 



Vagina, of Leptoplana, 16 ; in ectoparasitic 

 Trematodes, 57 f. ; in Cestodes, 86, 87 



Vaillant, on Hirudinea, 392, 405 



Valencinia, 113 ; V. lineformis, 112 



Valkeria, 533 



Vallentin, on Rotifers, 198 



Vatt is nia, 73 



Yanadis, 315 



Varme, 297 



Vasa deferentia, of Leptoplana, 14, 15 ; of 

 Planaria, 38, 39 ; of Acoela and Alloeo- 

 coela, 47 : of Diplozoon, 60 ; of Schisto- 

 cephalus, 86 



Vasa efferentia, of Leptoplana, 14, 15 ; of 

 Triclads, 38 



Vascular System, of Nemertinea, 106, 

 107 ; of Archiannelida, 244 ; of Nereis, 

 251 f.; of Polychaeta, 251 f.; of Crypto- 

 cephala, 252 ; of Scoleciformia, 252 ; of 



Terebellifbrmia, 252 ; absence of, in 

 certain Polychaeta, 253 ; of Oligochaeta, 

 355 ; of Leeches, 396 ; of Gephyrea, 

 415, 436, 447 ; of Phoronis, 455 



Vaucheria, Rotifers in, 227 



Vejdovsky, on Rhabdocoels, 46 ; on Gor- 

 dius, 164, 166 ; on Oligochaeta, 365, 

 369, 374, 400 



Vermes, 347 



Vermiculus, 378 



Vermiformia, 461 



Verrill, on Chaetognatha, 534 



Vertebrates, parasites of, 163, 174, 179, 183 



Verworn, on statoblasts, 501 



Vesicula seminalis, of Planaria, 39 



Vesicularia, 481, 518, 533 



Vesicularina, 518, 523 



Vestibule, 488, 490 ; of larva, 509 



Vibracular zooecium, 485, 486, 517, 524 



Vibraculum, 477, 484, 485, 517, 524 ; 

 movements, 487 ;. function, 486 



Vicarious avicularia, 482 



Victorella, 492, 501, 505, 518, 533 



Villot, on life-history of Gordius, 172 



Yinella, 521 n. 



Virgate, 210 



Visceral nervous system, of Nereis, 255 



Vitellarium = Yolk-gland, q.v. 



Vitello-intestinal canal, in Polystomatidae, 

 57 



Viviparous, Nemertinea, 109, 117 ; Roti- 

 fers, 200, 216 f.; Polychaeta, 256, 276 



Volvox, Rotifers in, 227 



Vortex, 44 ; British species, 50 ; body- 

 cavity, 43 



Vorticellids, on Polychaeta, 299 



Vorticeros, British species, 45, 46, 50 



Vorticidae, 50 



Vuillemin (misprinted in text), on Nema- 

 todes in desert?, 156 



Walford, on Polyzoa, 521 



Ward, on Nectonema, 168 ; on Sipuncidus, 

 417 



Warning colours, in Polychaeta, 294, 314 



Waters, on Polyzoa, 517 



Wheeler, on Myzostomaria, 344 



Whelk, shell occupied by Nereis-, 298 



White Cat, 317 



Whitman, on Dicyemidae, 94 ; on Hiru- 

 dinea, 395 f., 402, 405 f. 



Willemoes-Suhm, von, on Tetrastemma 

 !,ricola, 101, 115, 117, 118 



Willey, on affinities of Nemertinea, 120 n. ; 

 on Oligochaeta, 382 



Wings, of Cfutetopterus, 295, 324 



Winter-eggs, of Mesostoma. 48 ; of Roti- 

 fers, 217 ; compared with statoblasts, 

 493 



Woodworth, on yolk-glands, 38 n. 



W T reath, in Rotifers, 200 



Wright, on Phoronis, 450, 456 



