706 



INDEX 



Thyca, 596 



T. cristallina, 597 



T. ectoconcha, 597 



Thyone, 97, 224, 378, 381, 393 



T. briareus, 285 



thyroid, 155 



Thysanoessa, 639 



Thysanozoon brocchii, 30 



tidal pools, 5, 6 



Tiedemannia, 513 



T. neapolitana, 101 



tintinnids, 205 



Tisbe reticulata, 493 



tissue fluids, 85 



Tivela, 173, 219 



toadfish. See Opsanus, Thalassophryne 



Tomopteris, 203, 238, 274, 322, 431 



tonus, 377, 392 



tornaria larvae, feeding, 223 



Torpedo, 153, 244, 287, 395, 396, 397, 398, 



400 

 T. nobi liana, 397 

 T. ocellata, 103 

 T. occidentalis, 397 



T. torpedo, 91, 396, 398, 399, 519, 520, 678 

 Toxeuma, 312 

 Trachinus vipera, 497, 510 

 Trachurus trachurus, 587 

 transport, of food, 273 

 Travisia, 173 

 trematodes, 593, 610 



parasitism, 592 

 trichocysts, 371 

 Trichodina patellae, 616 

 Tridachia crispata, 614 

 Tridacna, 615, 617, 620, 662 

 T. crocea, 618 

 T. derasa, 615 



Tridacnidae, symbiosis, 614, 616, 619 

 trigger-fish, 635 

 Trigla, 406, 507 

 T, gurnardus, 491 

 T. lineata, 242 

 T. lucerna, 329, 485 

 T. lyra, 491 



trimethylamine oxide, 283, 289, 291, 300 

 Triopa fulgurans, 546 

 trochophore, 223 

 Trochopus, 593 

 tropic birds, feeding, 247 

 tropisms, 320 

 tropo-taxis, 321 

 trout. See Salmo, Salvelinus 

 trunk fishes. See Ostraciidae 

 Trygon, 665 

 Tryphosa pinguis, 633 

 trypsin, 266, 273 

 tube feet, 97, 139,428 

 tubes, 653 

 Tubicinella, 602 

 tubicolous animals — 



defaecation, 276 



ventilation, 145 



Tubipora,A9\, 636, 637 

 T. purpurea, 632 

 tubular hearts, 104, 119 

 tuna (tunny), 353 

 tunicates, 23 



circulation, 106 



digestion, 264 



test, 653 



vanadium chromogens, 180 

 tunicin, 653 

 Turbellaria — 



digestion, 255 



feeding, 238 



nephridium, 297 



nutrition, 618 



osmotic relations, 41 



symbiosis, 613, 617 

 Turbo cornutus, 487 

 turnstone. See Arenaria 

 Tursiops truncal us, 186, 345, 407 

 T. tursio, 179, 186 

 turtle- 

 excretion, 289 



haemoglobin, 179, 186 



respiration, 170 



See also Caretta, Chelonia 

 Typton, 590 

 tyramine, 113, 255 

 Tyrian purple, 481 



Uca, 149, 155, 316, 341, 406, 460, 507, 515, 



517, 518, 530, 531, 638, 644 

 U. crenulata, 47 

 U. minax, 124 



U.pugilator, 517, 528, 529, 531 

 U. pugnax, 529 

 Udonella, 593 



Upogebia, 146, 228, 515, 601 

 Uranoscopus, 244, 318 

 urea, 282, 288, 289, 294, 618 



elasmobranchs, 300 

 urease, 295 

 Urechis, 156, 173, 191 

 U. caupo, 88, 145, 147, 152, 165, 169, 179, 



183, 186, 224, 229, 588. 589 

 ureotelism, 282, 289 

 Uria aalge, 186 

 U.grylle, 170 

 uric acid, 282, 288,482, 618 



molluscs, 292, 293 

 uricase, 295 



uricotelism, 282, 288, 292 

 urine-formation, 297, 300 

 uroporphyrin, 288. 479 

 Urosalpinx, 155, 235 

 utriculus, 341 



vagus nerve, 92, 108, 274, 397, 403 



Vampyroteuthis infernalis, 574 



Vanadis, 310 



vanadium, blood, 175 



vanadium chromogens, 174, 175, 180 



vanadocytes, 175 



