INDEX 



829 



Rana temporaria 



migration of retinal pigment, 614, 615 

 pupillary contraction, 340 

 retina, 343 

 triple cones, 308, 342 

 visual cells, 344 

 Ranatra, telotaxis in, 56 

 Ranzania truncata, eyes of, 273 

 Rat, 445 



blood supply to eye, 498 

 colour blindness of, 633 

 cornea, 453 



epithelium of, 452 

 distance, judgment of, 704 

 eye of, 605 



lacrimal passages, 494 

 Moll's glands lacking, 492 

 neuro -secretory cells, 551 

 ocular movements, 696 

 optic axis, 688 

 retina, rod-rich, 610 

 threshold to light, difference, 618 

 visual acuity, 663, 665 

 cells, 483 

 Ratita-, 397 



annular pad, 409 

 pecten, 411, 413 

 See also Apteryx, Struihio, etc. 

 Rattlesnake. See Crotalus. 

 Rattus. See Rat. 

 Raven, 402 



eye, shape of, 402 

 See also Corvidae. 

 Ray. See Raja. 



Reflexes, conditioned. See Conditioned 

 reflexes, 

 pvipillary. See Pupillary reactions. 

 Refraction of vertebrates, 638 

 amphibians, 638 

 birds, 639 

 cyclostomes, 638 

 fishes, 638 

 mammals, 639 

 reptiles, 639 

 Reptiles, 353 



accommodation in, 648, 649 

 brain, 533 



transection of, 534 

 cerebral cortex, 543 

 ciliary ganglion, 501 

 colour changes in, 82 

 control of, 98, 558 

 mechanism of, 87 



Reptiles, colour changes in, rhythmic, 20 

 colour vision of, 628 

 diurnal, 603 

 eyes of, 353 ff. 



degenerate, 731 



median, 715, 716 

 fore-brain, 543 



removal of, 545 

 lateral geniculate body, 541 

 median eyes, 715, 716 

 mid-brain, 535 

 migration of retinal pigment, 614 



of visual cells, 616 

 movement, perception of, 705 

 neuro -endocrine system, 557 

 nocturnal, 603 

 ocular movements of, 694 

 optic thalamvis, 540 

 primitive, 234, 235 

 pupillary reactions, 700 

 refraction of, 639 

 reproductive cycle in, 17 



control of, 559 

 spatial judgments of, 702 

 tectum, 535 

 telencephalon, 543 

 vision of, 599 

 visual acuity of, 661 



field, binocular, 682 



pathways, 538, 544 

 Respiration rate and colour vision, 623, 



625 

 Rete of Hiirlimann, 500 

 Retina, characteristics in 



Anableps, 325 



anurans, 341, 343 



birds, 418, 419 



cei^halopods, 145 



chelonians, 372, 373 



chimseras, 290 



chondrosteans, 318 



crocodilians, 377 



dipnoans, 313 



holosteans, 322 



invertebrates. See Retinule, Visual 

 cells, etc. 



lacertilians, 361, 363 



lamjarey, 268 



Latinieria, 315 



marsupials, 439 



monotremes, 435, 436 



placentals, 482, 483, 484 



Pterocera, 142 



