INDEX 
Piramutana, 588 
Piranha, 578 
Pirate Perch, 656 
Piratinga, 361 
Pirinampus, 588 
Pit-organs, 383 
Pituitary body, 129 
Placenta, of Voliolum, 98 ; of Hemimyaria, 
101, 107 ; of Fishes, 434 
Plagiostomi, 442 f., 148 
Plagusia, 687 
Plagyodus, 614 
Plaice, 687 
Platax, 668 
Platycephalidae, 699, 694, 650 
Platycephalus, 699, 698 
Platychaerops, 673 
Platycormus, 643 
Platyglossus, 673 
Platylaemus, 674 
Platypoecilus, 616 
Platyrhinoidis, 460 
Platysomatichthys, 687, 685 
Platysomidae, 487, 485 
Platysomus, 488 
Platystoma, 594; air-bladder and its ex- 
trinsic muscles, 360, 361, 362 ; P. corus- 
cans, 594 
Platytroctes, 570 
Plecodus, 672 
Plecoglossus, 566, 569 
Plecostomus, 595, 256, 292; (Hypostoma) 
seales, 190 ; P. commersonti, 192 
Plectognathi, 727 f., 548, 651, 205, 231, 
275, 306, 354, 418 
Plectromus, G56 
Plectropoma, G59 ; P. richardsoni, colora- 
tion, 165 
Plesiops, 659 
Plethodus, 549 
Pleuracanthidae, 440 
Pleuracanthus, 440, 159, 235, 236, 438 ; 
vertebral column, 197; pectoral and 
pelvic girdles, 239 ; pectoral fin, 242; 
pelvic fins, 245; P. ducheni, 439 
Pleuragramma, FOS; P. antarcticum, 
705 
Pleurogrammus, 696 
Pleuronectes, 687 ; P. flesus, 687 ; colora- 
tion elements, 167, 170; P. limanda, 
687 ; P. platessa, 686, 687 
Pleuronectidae, 684, 683, 152, 264, 275, 
284, 302, 412; protective coloration, 
172 
Pleuropholis, 945 
Pleuroplax, 445 
Pleuropterygii, 456, 148 
Plication, of branchial sac, 48 
Plotosus, 588, 587, 408 
Podateles, 714; P. indicus, pectoral arch 
of, 714 
Podatelidae, 773, 704 
N 
in 
~ 
Poecilia, G16 
Poecilodos, 445 
Poecilopsetta, G87 
Poey, 713 n. 
Pogge, 700 
Pogonias, 668 
air - bladder, 
sounds, 362 
Poison, of Trachinus, 705 
Poison glands, 176 
Pollack, 649 
Pollan, 568 
Polyacanthonotus, 625 
Polyacanthus, G69, 293; P. opercularis, 
669 
Polyandry, 413 
Polycarpa, 74, 76; reproductive organs, 
55; P. aurata, 76; dorsal tubercle, 
79; P. comata, 76; P. glomerata, larva, 
183 BP: pedata, 76; P. tunctor, 76; 
dorsal tubercle, 79 
Polyearps, 76 
Polycaulus, G95 
Polycentropsis, GOS 
Polycentrus, 658 
Polyclinidae, 87, 81, 83, 110 ; ascidiozooid, 
82 
Polyclinum, 88 + P. iolle, stomach, 88 
Polycyclus reniert, larva, 78 
Polygamy, 413 
Polyipnus, 571 
Polymixia, 656 
Polynemidae, 640, 637 
Polynemus, 641; P. quadrifilis, 641 ; 
shoulder-girdle and pelvis of, 640; J’. 
vereker, coloration, 165 
Polyodon, 491, 154, 284, 405; vestigial 
dermal denticles, 188 ; ribs, 201 ; skull, 
225; pelvic fin, 245; teeth, 249; 
pyloric caeca, 274, 276; gills, 282; 
spiracle, 283; gill-rakers, 288; LP. 
folium, 491; habits and distribution, 
491 ; breeding, 492 
Polyodontidae, 491, 486, 489 
; P. chromis, 
304, 305; 
663, 361; 
drumming 
* Polyphyodont, 250 
Polyprion. G59 
Polypteridae, 487 ; distribution, 483 
Polypterus, 482, 149, 323; scales, 185, 
187 ; vertebral column, 202 ; ribs, 206 ; 
skull, 226, 227, 229 ; median fins, 235 ; 
pelvic girdle, 241; }ectoral fin, 243 ; 
tongue, 252; spiral valve, 268 ; pyloric 
caecum, 274; spiracle, 283; psendo- 
branch, 284; larval gills, 290; air- 
bladder, 298; arteries to air- bladder, 
337; sounds, 362; habits and food, 
482; breeding, 483; P. bichir, 482: 
P. congicus, 290; P. lapradei, 483 ; 
larvae, 483, 484; P. senegalus, 482, 
483 
Polyrhizodus, 446 
Polystyelidae, 89, 81, 110 
