780 



INDEX 



Alciopa, 192 



accommodation in, 591 

 ocelli of, 143, 192 

 Alligator, 375 

 brain, 533 

 visual acuity, 665 

 field, binocular, 682 

 chinensis, fundus, PI. VIII 

 mississippiensis, visual cells, 377 

 Allolohophora, conditioning of, 573 

 Alouatta. See Monkey, howling. 

 Alytes obstetricans, 334 



colour blindness of, 628 

 pupil of, 339 

 Amhlyomma pomposum, 217 

 Amblyopsidse, 725 

 Amhlyopsis, degenerate eyes in, 726 

 Amblyrhynchus cristahis, 356 

 Ambystoma tigrinum, 334, 346 

 eyes of, 346, 728 

 larva. See Axolotl. 

 Ameiurus, 307 



colour changes in, 97 

 eyes of, 725 



larvae, phototaxis in, 46 

 optic nerve, 310 

 visual cells, 307 



migration of, 616 

 Amia, 279, 321 



choroidal gland, 321 

 colour vision in, 624 

 cornea, 295 

 eye of, 276, 321 

 median eye of, 713 

 visual cells, 321 



migration of, 614 

 Ammocoetes, 92, 260 

 colour changes in, 92 

 eyes of, 261 



light-sensitive cells in tail, 132, 263 

 median eye of, 717 

 optic nerve, 270 

 Amtnomanes, camouflage in. 83 

 Ammophila, mnemotaxis in, 79 

 Amoeba proteus, 179, 180 



diffuse sensitivity of, 113 

 photokinesis in, 35 

 Amphibians, 333 



accommodation in, 647 

 brain, 533 



transection of, 534 

 ciliary ganglion, 501 

 cochlea, 534 



Amphibians, colour changes in, 82 

 control of, 97, 558 

 mechanism of, 86 

 pineal organ and, 719 

 rhythmic, 20 

 colour vision in, 627 

 ojitomotor reaction and, 623 

 dermatoptic sensitivity of, 32 

 eyes of, 334 j^. 



degenerate, 726, 730 

 fore-brain, 543 



removal of, 545 

 iris, contraction to light, 89 

 lateral geniculate body, 541 

 mid-brain, 535 

 migration of retinal pigment, 614 



visual cells, 616 

 movement, perception of, 705 

 neuro -endocrine system, 557 

 nocturnality of, 603 

 ocular movements of, 694 

 optic thalamvis, 540 

 pineal apparatus, 714 



function of, 719 

 primitive, 234, 235 

 pupillary reactions, 89, 700 

 refraction of, 638 

 reproductive cycle in, 17 

 rods, thickening of, 611 

 spatial judgiuent of, 702 

 tectum, 534 

 telencephalon, 543 

 vision of, 599 

 visual acuity of, 661 

 field, binocular. 682 

 pathways of, 537, 544 

 I^igments of, 121 

 See also Anurans, Cfecilians, Urodeles. 

 Amphibious eyes in fishes, 324 



vertebrates, accommodation in, 654 

 duplicated optical system, 641 

 Amphioxus, 229 



cells of Joseph, 229 

 infundibular organ, 229 

 nerve-cord, 239^ 530 

 nervous system, 530 

 organs of Hesse, 230 

 vertebrate eye developed from, 244 

 Amphiporus, 189 



ocelli of, 189 

 Amphisbcena punctata, degenerate eyes of, 



733 

 Amphisbaenidse, 733 



