INDEX 



751 



J'irKiiiiitioia, 5SS 



Piranha, 578 



Pirate Percli, 0."i6 



riri/tiiKja, 361 



Pirinaiiipns, 5SS 



Pit-organs, 383 



Pituitary body, '129 



Placenta, of Ihilioliim, 98 ; of Hemimyaria, 



101, 107 ; of Fishes, 434 

 Plagiostomi, U~ 1-, 148 

 Phiijiisia, 687 

 Phl'jljvdus, 6I4 

 Plaice, 687 

 Platao:, 66S 



Platycephalidae, 699, 694, 650 

 Plahjcephcdus, 699, 693 

 PlaiycliaeT&ps, 673 

 Platyconnus, 643 

 Platyglossus, 673 

 Platylaevius, 674 

 Pkitypoecilus, 616 

 Plaiyrhinoidis, 4^0 

 Platysomatichthys, 687, 685 

 Platysomidae, 487, 485 

 Platysmnus, 4S8 



PlatystowM, 594 ; air-bladder and its ex- 

 trinsic muscles, 360, 361, 362 ; P. amis- 

 cans, 594 

 Platytmctes, 570 

 Plecodus, 6'7~ 

 Plecoglossus, 566, 569 

 Plecostumus, 595, 256,292; (Hypostoma) 



scales, 190 ; P. commersonii, 192 

 Plectognathi, 7S1 f., 543, 651, 205, 231, 



275, 306, 354, 418 

 Plectroimis, 656 



Pledropoma, 659 : P. richardsoni, colora- 

 tion, 165 

 PUsiops, 659 

 Plethodus, 549 

 Pleuracanthidae, ^^0 

 Pleuracanthus, 44O, 159, 235, 236, 438 ; 

 vertebral column, 197 ; pectoral and 

 pelvic girdles, 239 ; pectoral fin, 242 ; 

 pelvic fins, 245 ; P. ducheni; 439 

 Pleuragrwmma, 705 ; P. an'arcticum, 



705 

 Pleurograminvs, 696 



Pleuronectes, 687 ; P. flesus, 687 ; colora- 

 tion elements, 167, 170 ; P- limanda, 

 687 ; P. platessa, 686, 687 

 Pleiironectidae,. 684, 683, 152, 264, 275, 

 284, 302, 412 ; protective coloration, 

 172 

 Pleuropholis, 545 

 Plevroplux, 44-^ 

 Fleuropterygii, .^56', 148 

 Plication, of branchial sac, 48 

 Plotosus, 688, 587, 408 

 Pndateles, 714 ; P- indicus, pectoral arch^ 



of, 714 

 Podatelidae, 713, 704 



Poecilia, 610 



Pvecilodos, 445 



Poecilopsetta , 687 



Poey, 713 n. 



Pogge, 700 



Pogonias, 66S ; P. chromis, 663, 361 ; 

 air-bladder, 304, 305; drumming 

 sonnds, 362 



Poison, of Truchhiits, 705 



Poison glands, 176 



Pollack, 649 



Pollan, 568 



Polyacanthofiotus, 625 



Polyacanthus, 669, 293 ; P. opjercularis, 

 669 



Polyandry, 413 



Polycarpa, 74, 76 ; reproductive organs, 

 55 ; P. aurata, 76 ; dorsal tubercle, 

 79 ; P. comata, 76 ; /'. glomerata, larva, 

 78 ; /'. pedata, 76 ; P. tinctor, 76 ; 

 dorsal tubercle, 79 



Polycarps, 76 



I^olyraulus, 695 



Polyci'iUropsis, 658 



T'olyci^idrus, 658 



Polycliuidae, 87, 81, 83, 110 ; ascidiozooid, 

 82 



Polycliniiiii, 88; P. nwlle, stomach, 88 



Polycydus renieri, larva, 78 



Polygamy, 413 



Polyipnits, 571 



Polyiiiixia, 656 



Polynemidae, 64O, 637 



Polyiienms, 64I ', -f- qiiadrifiUs, 641 ; 

 shoulder-girdle and [lelvis of, 640 ; P. 

 vereker, coloration, 16rj 



Polyodon, 491, 154, 284, 405 ; vestigial 

 ilermal dent-icles, 188 ; ribs, 201 ; skull, 

 225 ; pelvic fin, 245 ; teeth, 249 : 

 pyloiic caeca, 274, 276 ; gills, 282 : 

 .spiracle, 283 ; gill - rakers, 288 ; P. 

 fnliuiii, 491 ; habits and di-tributiou, 

 '491 ; breediug, 49^ 



Polyodontidae, 491, 486, 489 



JPolyphyodont, 250 



Polyprion. 659 



Polypteridae, 48I ; distribution, 483 



Polypterus, 482, 149, 323 ; scales, 185, 

 187 ; vertebral column, 202 ; ribs, 206 ; 

 skull, 226, 227, 229 ; median flns, 235 ; 

 pelvic girdle, 241 ; ] ectoral fin, 243 ; 

 tongue, 252 ; spiral valve, 268 ; jiyloric 

 caecum, 274 ; spiracle, 283 ; pseudo- 

 branch, 284 ; larval gills, 290 ; air- 

 bladder, 298 ; arteries to air-bladder, 

 337 ; sonnds, 362 ; habits and food, 

 482 ; breeding, 483 ; P. bichir,- 482 : 

 P. congicus, 290 ; P. lapradei, 483 ; 

 larvae, 483, 484 ; P. senegalus, 482, 

 483 



Polyrhizodns, 44^ 



Polystyelidae, 89, 81, 110 



