702 



INDEX 



Pygoscelis adeliae, 170 



Pylocheles, 663 



pyloric caeca, 265 



pyramidellids, parasitism, 598 



Pyrgoma, 663 



Pyrocypris, 562 



pyrimidines, 282, 288 



Pyrosoma, 106, 320, 536, 540, 552, 554 



560, 564, 573, 622, 653 

 P. atlanticum, 568, 570 

 pyrrolic pigments, 476 

 Pyura, 653 



Radiolaria — 



feeding, 204 



skeleton, 630 

 radula, 73, 233, 239, 240, 255 

 Raja, 91, 92, 110, 121, 295, 318, 356, 395, 



396, 398, 400, 494, 520, 678 

 R. batis, 397, 418, 519 

 R. binocalata, 88, 179 

 R. clavata, 88, 179, 343, 397, 400, 519 

 R. erinacea, 88, 179 

 R. laevis, 124, 179 

 R. ocellata, 91, 179, 183, 186 

 R. pulchra, 396 

 R. punctata, 91 

 R. rhina, 88 

 Ranzania, 310 

 ratfish. See Hydrolagus 

 razor-billed auk. See Ale a tor da 

 receptors, 305 

 redia, 593 

 red tides, 664 

 reflex activity, 403, 447 

 refractory period, muscle, 383 

 remora, 584 



See also Echeneis 

 Ren i era, 612 



Renilla, 564, 565, 569, 571 

 R. kollikeri, 421, 568 

 repellents, 355 

 reptiles — 



haemoglobin, 186 



respiration, 170 

 respiration, 135 



diving vertebrates, 168 

 respiratory mechanisms, 137 

 respiratory pigments, 172 

 respiratory rhythms, 164 

 retina, 312, 326 

 retinal action potentials, 333 

 retinal photomechanical changes, 318 

 retinal pigments, 314, 318 

 retinene, 329 

 Rhineodon, 230 

 Rhizocephala, 602 



biliverdin, 479 



nutrition, 248 

 Rhizostoma, 584 

 R. cuvieri, 587 

 R. pulmo, 152 

 rhodopsin, 329, 487 



Rhopalura ophiocomae, 595 

 Rhopilema, All 

 rhythmic activity, 450, 528 

 rock-borers, 658 

 rockling. See Onos 

 rock lobster, 9 



See also Palinurus, Panulirus 

 rods, 313, 326 

 Rondeletia, 558 

 rosefish. See Sebastes 

 Rossia, 622 



Sabella, 137, 143, 147, 187, 208, 275. 



454 

 S.pavonina, 35, 101, 148, 164, 165, 169, 



188, 209, 656, 657 

 S. spallanzanii. See Spirographis 



spallanzanii 

 Sabellaria, 598, 656 

 Saccoglossus, 220, 307, 320, 427 

 Saccopharynx harrisoni, 546, 555 

 Sacculina, 602, 603, 604, 608 

 sacculus, 341 

 Sagitta, 241 

 saline media, 675 

 salinity, 6, 9, 29 

 salivary glands, 240, 255, 256 

 Salmacina, 605, 655 

 S. dysteri, 607 

 Salmo, 526 

 S. salar, 186 

 S. shasta, 169 

 S. trutta, 179 

 salmon, 290, 354 



See also Oncorhvnchus, Sal 'mo 

 Salpa, 221,552, 592 

 S. fusiformis, 101 

 S. vagina, 153 

 salps, circulation, 106 

 Salvelinus fontinalis, 186 

 sand crab. See Emerita 

 sand flea. See Talor chest ia 

 sand shark. See Carcharias 

 Sapphirina, 484 

 S. maculosa, 493 

 S. nigromaculata, 493 

 sarcolemma, 378 

 Sargus annularis, 343 

 S. rondeleti, 153 

 Sarsia, 308 

 sawfish. See Prist is 

 Saxidomus nuttalli, 285 

 scales, fish, 635 

 scallop. See Pec ten 

 Scaphander, 239, 256 

 Scaridae, 236 

 Schizothaerus nuttalli, 285 

 Sciaenidae, 344, 406 

 scleroblasts, 631, 636 

 Sclerophytum, 616 

 S. capitale, 613 

 Scleroplax granulata, 588 

 sclerotin, 641 



