INDEX 
Pteraspidae, 627, 530 
Pteraspis, 527, 530, 149 ; P. rostrata, 527 
Pterichthys, 534, 149 ; P. milleri, 533 
Pterobranchia, 27 f., 5, 31 
Pterois, 695 
Pterophryne, 720 
Pterophyllum, 672 
Pteroplatea, 464; P. 
uterine nutrition, 435 
Pteropsarion, 582 
Pteropsaron, 705 
Pterothrissus, 548 
Pterycombus, 682 
Pterygocephalus, 709 
Pterygoplichthys, 595 
Ptilichthys, 709 
Ptychobarbus, 582 
iPiychowera, 17, 5, 13, 16, 25 ne;--P: 
bahamensis, 5,10; P. flava, 10, 11 
Ptychoderidae, 77 
Ptyctodontidae, 468 
Ptyctodus, 468 
Puffers, 726 
Punnett, 17 n., 21 n. 
Putnam, 619 n., 625 
Pycnodontidae, 498, 497 
Pycnodus, 498 
Pycnosterinx, 656 
Pygochord, 15 
Pylorie caeca, 274, 275 
Pyrosoma, 91, 91, 36, 37, 70, 86, 108 ; 
structure, 91 f., 92; development and 
life-history, 93, 94; occurrence, 94 ; 
P. aherniosuin, 94; P. atlanticum, 94 ; 
P. elegans, 94; P. excelsior, 95; P. 
giganteum, 94; P. minatum, 94; P. 
spinosum, 94 
Pyrosomatidae, 97, 81, 110 
Pyrrhulina, 575 
Pythonichthys, 605 
micrura, intra- 
Quinnat Salmon, 566, 569 
Raad, 591 
Raconda, 563 
Racovitzaia, 706 
Riiderorgan, 129 
Raffaele, 614 n. 
Rag-Fishes, 644 
Raia, 461; dermal spines, 184 ; pectoral 
fin, 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; R. alba, 462; R. 
batis, 462; R. circularis, 462; R. 
clavata, 462; R. fullonica, 462; R. 
macrorhynchus, 462; R. maculata, 267, 
462; R. mamillidens, 462 ; R. microcel- 
lata, 462; R. murrayi, 461; R. oxy- 
rhynchus, 462; R. radiata, 462 
Raiidae, 461 
VOL. VII 
133 
Ramsay, 635 
Raniceps, G48 
Ranznia, 727 
Rashora, 582 
Rathbunella, 661 
Rays = Raia, q.v. 
Rectal gland, 276 
Red-currant Squirter, 74 
Red Mullets, 665 
Regalecus, 715; R. banksii, prehensile 
tail, 163; R. glesne, 715 
Regan, 542, 595n., 648 n., 
721 
Reinhardt, 579, 594 
Remora, 6913; cephalic sucker, 161; &. 
brachyptera, 691 
Renal organ, of Ascidians, 54 ; of Fishes— 
see Kidneys 
Reproductive organs, of Hemichordata,, 
16, 25 ; of Tunicata, 55, 67, 76, 93, 97, 
105 ; of Amphioxus, 129; of Fishes, 
402 f., 400, 403 
Respiration, mechanism of, 288 
Respiratory organs—Elasmobranchii, 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 
Retropinna, 566, 565 
Retzius, 113 
Rhabdocynthia, 75 ; spicules, 87 
Rhabdopleura, 21 t., 5, 26 f.; R. com- 
pacta, 23; MR. grimaldii, 23; R. 
manubialis, 23; R. normani, 22, 23, 
26 
Rhachicentridae, 677, 676 
Rhachicentrum, 678 
Rhamphichthys, 579 
Rhamphocottidae, 697, 694 
Rhamphocottus richardsonii, 697 
Rhamphognathus, 640 
Rhamphosternarchus, 579; R. curvirostris, 
580; R. tamandua, 580 
Rhamphosus, 633 
Rhina, 457 ; R. squatina, 456, 457 
Rhineaster, 589 
Rhinelepis, 595 
thinellus, G11 
Rhinichthys, 582 
Rhinidae, 456, 458; persistent nephro- 
stomes, 401 
Rhinobatidae, 460, 458 
Rhinobatus, 460; R. granulatus, 460 
Rhinodon, 454; R. typicus, gill-vakers, 
287 
Rhinodontidae, 454 
Rhinodoras, 359 
Rhinogobio, 582 
Rhinoptera, 465, 466 
646, 702, 
OO 
Q 
