GENERAL INDEX. 



901 



PIS 



Pisces continued. 



cerebellum, i. 274 



brain, i. 275 



developmental characters, i. 4 



electric organs of, i. 350 



generative products and development, 



i. 589 



sperm-cells, spermatoa, and sperm- 

 atozoa, i. 589 

 ovulation in Osseous Fishes, i. 



592 



stages of development, i. 593 

 outer coat of the roe, i. 594 

 ovulation in Cartilaginous Fishes, 



i. 597 



fecundation, i. 599 

 development, i. 601 

 growth and nests, i. 611 

 metamorphoses, i. 611 

 marsupial pouches, i. 613, 614 

 generative system, i. 568 

 male organs, i. 568 

 female organs, i. 571 

 varieties of forms, i. 576 

 hearing, organs of, i. 342 

 heart, i. 470 

 kidneys, i. 533 

 shape, i. 534 

 tissue, i. 534 

 circulation, i. 537 

 liver, i. 4 '2 5 



texture, i. 425 

 size, i. 425 

 forms, i. 426 

 gall-bladder, i. 427 

 locomotion, i. 243 



effects of cutting off fins, i. 259 

 muscular system, i. 202 

 nerves, i. 297 

 nervous system, i. 268 



myelencephalon, i. 268 

 osseous system 



dermoskeleton, i. 193 

 pectoral limb, i. 163 

 pelvic arch and limb, i. 179 

 skull, i. 92 



vertebral column, i. 34 

 pancreas, i. 284 



proportion of hard and soft mat- 

 ter, i. 19 



pyloric appendages, i. 428 

 reproduction of parts, i. 567 

 respiratory system, i. 475 

 gills, i. 475 



purpose, i. 479 

 modifications, i. 484 

 mechanism of branchial re- 

 spiration, i. 488 



views respecting homologips and 

 analogies of respiratory organs, 



498 



sight, organs of, i. 331 

 smell, organ? of. i. 328 



PLA 



Pisces continu d, 



spleen, i. 490 



teeth, i. 368 



teguments, i. 546 

 skin, i. 546 

 scales, i. 546, 547 

 lubricating mucus, i. 5oO 



thyroid body or gland, i. 564 



touch, organs of, i. 325 



urinary bladder, i. 535 



veins, i. 464 



why turn upside down in death, i. 258 

 Pithecia crysocephala, teeth of, iii. 315 

 Pithecus sa'iyrus, characters of, i. xx ; ii. 

 272, 273 



alimentary canal, iii. 434 



arteries, iii. 536 



brain, iii. 127, 131 



feet, ii. 553 



larynx, iii. 600 



locomotion, iii. 70 



lungs, iii. 582 



mammary organs, iii. 780 



osseous system, ii. 520 

 skull, ii. 534 

 clavicle, ii. 544 



teeth, iii. 316 

 Placentalia, iii. 285 

 Placodus, characters of, i. 16 



teeth, i. 387 



Placoganoidei, characters of, i. xxxviii, 12 

 Plagiaulax, dentition of, iii. 790 



skull, ii. 350 



teeth, iii. 294, 314 

 Plagiostomi, characters of, i. 7, 8 



locomotion, i. 253, 255 

 Plagiostomi, characters of, i. 8, 13 



skull, i. 76 



Planirostra (syn. Spatularia) spatula, ali- 

 mentary canal of, i. 410, 411, 415, 

 416, 421 



gills, i. 482, 486 



skull, i. 75 



Platalea, dorsal vertebrae and sternum of, 

 ii. 23 



beak, ii. 148 



pelvic limbs, ii. 82 

 Platanista, limb-bones of, ii. 427, 428 



skull, ii. 425 



Platax, changes accompanving growth of, 

 i. 612 



teeth, i. 371 



vertebral column, i. 39 

 Platurus, teguments of, i. 554 

 Platycephalus, vertebral column of, i. 4-3 

 Platydactylus guttatus, larynx of, i. 529 



liver, i. 449 



Platydactylus vittatus, larynx of, i. 529 

 Platy mantis plicifera, teguments of, i. o-3'2 

 Platypeltis ferox, alimentary canal of, i. 446 



fecundation, i. 615 

 Platyrhina, characters of, ii. 291. 295 



alimentary canal, iii. 432 



