INDEX 



753 



Ptfi-aspidae, 5a)7, 530 



I'/craspi'x, 527, 530, 149 ; P. rostrata, 527 



JHmcUhi/s, 534, 149 ; P. millei'i, 533 



Pterobranchia, 21 f., 6, 31 



Ptavis, 695 



Pleroph}-yne, 720 



Pterophyllum, 67 1 



Pleroplatea, 464 ; P. micrura, intra- 

 uterine nutrition, 435 



Pteropsanon, 582 



Pteropsaron, 705 



Pterothrissus, 54S 



Ptei-ycomhus, 682 



Pterygocephalvs, 709 



Pterygoplichthys, 595 



Ptilichthys, 709 



Ptychobarbus, 582 



Ptycliodera, 17, 5, 13, 16, 25 n. ; P. 

 bahamensis, 5, 10 ; P.Jlava, 10, 11 



Ptychoderidae, 17 



Ptj'ctodontidae, 4^^ 



Plyclodvs, 468 



Puffers, 726 



Punnett, 17 n., 21 n. 



Putnam, 619 n., 625 



Pycnodontidae, 498, 497 



Pycnodus, 498 



Pycnosterinx, 656 



Pygochord, 15 



Pyloric caeca, 274, 275 



Pyrosoma, 91, 91, 36, 37, 70, 86, 108 ; 

 structure, 91 f., 92 ; developnnent and 

 life-history, 93, 94 ; occurrence, 94 ; 

 P. aherniosum, 94 ; P. atlanticum, 94 ; 

 P. elegans, 94 ; P. excelsior, 95 ; P. 

 cjiganteum, 94 ; P. minatum, 94 ; P. 

 spinosum, 94 



Pyrosomatidae, 91, 81, 110 



Pyrrhulina, 575 



Pythonichthys, 605 



Quiunat Salmon, 566, 569 



Raad, 591 



Paconda, 563 



Racovitzaia, 706 



Raderorgan, 129 



Eaffaele, 614 n. 



Rag-Fishes, 644 



Paia, 461 ; dermal spines, 184 ; pectoral 

 tin, 243 ; teeth, 251 ; spiral valve, 265, 

 266 ; inter-renal bodies, 347 ; electric 

 organs, 365 ; distribution, 461 ; colora- 

 tion, 461 ; sexual dimorphism, 462 ; 

 R. abyssicola, 462 ; P. alba, 462 ; R. 

 batis, 462 ; R. circulo,ris, 462 ; R. 

 davaia, 462 ; R. fullonica, 462 ; R. 

 macrorhynchus, 462 ; R. maxulata, 267, 

 462 ; R. mamillidens, 462 ; R. microeel- 

 laia, 462 ; R. murrayi, 461 ; R. oxy- 

 rhynchus, 462 ; R. radiata, 462 



Raiidae, 4^1 

 VOL. VII 



Ramsay, 635 



Raniceps, 648 



Ranmiiia, 7%7 



Rasbora, 582 



RaUtbuiiella, 661 



Rays = i?ui(«, q.v. 



Rectal gland, 276 



Red-curraut Squirter, 74 



Red Mullets, 665 



Regaleeus, 715 ; R. banksii, prehensile 



tail, 16S ; R. glesne, 715 

 Regan, 642, 595 n., 643 n., 646, 702, 



721 

 Reinhardt, 579, 594 

 Remora, 691 ; cephalic sucker, 161 ; Ru 



hraehypteru, 691 

 Renal organ, of Ascidians, 54 ; of Fishes — 



see Kidneys 

 Reproductive organs, of Hemichordata,, 



16, 25 ; of Tunicata, 65, 67, 76, 93, 97, 



105 ; of Amphioxus, 129 ; of Fishes, 



402 f. , 400, 403 

 Jlespiratiou, mechanism of, 288 

 Respiratory organs — Elasmobrancbii, 276, 



278 ; Cyclostomata, 279, 280, 281 ;"" 



Holocephali, 282, 283 ; Teleostomi, 282, 



283 ; Dipnoi, 285, 286 ; mechanism of 



respiration, 288 ; larval gills, 289, 290 ; 



air-bladder as a respiratory organ, 291 ; 



accessory organs of respiration, 292, 



293, 294, 295 

 Retropuina, 566, 665 

 Retzius, 113 



Rhabdocynthia, 75 ; spicules, 87 

 Rhahdopleura, 21 f., 5, 26 f . ; li. com- 



pacta, 23 ; R. grimaldii, 23 ; R, 



inanubialis, 23 ; R, normani, 22, 23, 



26 

 Rhachicentridae, 677, 676 

 PJiachkentru-m, 678 

 Rhamphichthys, 579 

 Rhamphocottidae, 697, 694 

 Rhaviphocotlus ricliardsonii, 697 

 Rhaviphognathus, 64O 

 Rhamphosternarchus, 579 ', R. curvirostriSf 



580 ; R, tamandua, 580 

 Rhampliosus, 633 



Rhina, 4^7 ; R. squatina, 456, 457 

 Rhineaster, 589 

 Rhinelepis, 595 

 Rhinellus, 611 

 Rhinichthys, 582 

 Rhinidae, 456, 458 ; persistent nephro- 



stomes, 401 

 Rhinobatidae, 46O, 458 

 RhinobaUis, 46O ; R. granulalus, 460 

 Rhinodon, 454 ; R. typicus, gill-rakers, 



287 

 Rhinodontidae, 4^^ 

 Rhinodoraa, 359 

 Rhinogobio, 582 

 Rhinoptera, 4(>5, 466 



3 c 



