782 



INDEX 



Anterior chamber angle, characteristics in 

 chondrosteans, 317, 319 

 coelacanth, 315 

 crocodilians, 376 

 dipnoans, 313 

 holosteans, 321 

 lacertilians, 359 

 marsupials, 439 

 placentals, 464, 465 

 selachians, 285 

 snakes, 386 

 Sphenodon, 380, 381 

 teleosts, 303 

 urodeles, 347 

 pad of lens, in snakes, 389 

 Antholoha, phototactic reaction of, 571 

 Anthozoa, 182 



See also Sea-anemone, Coelenterates. 

 Anthrohia, eyes lacking in, 724 

 Anthropoidea, 443 

 area centralis, 485 

 colour vision in, 635 

 diurnal, 604 

 fovea, 659 



nocturnal. See Nyctipithecus. 

 optic axis, 688 

 orbit, 498 



visual field, binocular, 689 

 See also Apes, Primates. 

 Antilocapra. See Pronghorn. 

 Anurans, 334 



accomniodation in, 648 



colour vision in, 627 



eyes of, ZMff., 336, PI. Ill 



lateral line organs, 534 



migration of retinal pigment, 614 



visual cells, 616 

 ocular movements in, 694 

 pineal organ, 714 

 refraction of, 638 

 vision of, 599 

 visual acuity of, 661 



field, binocular, 682 

 Seealso Hyla, Rana, Xenopiis, etc. 

 Apes, anthropoid, 443 



ciliary region, 461, 463 

 Harder 's gland, 494 

 Moll's gland, 492 

 pectinate ligament, 464 

 vision of, 602 

 colour, 635 

 visual field, binocular, 689 

 See also Primates, Chimpanzee, etc. 



Aphaniptera, 219, 220 

 Aphid, 225 



eyes of, 224, 225 

 Aphis forbesi, reproductive cycle in, 17 

 Aphrophora spumaria larva, ocellus of, 



140 

 Aphyonus, degenerate eyes of, 724 

 Apis, 58 



colour vision in, 587, 588 

 conditioning of, 583, 588 

 cornea, transparency of, 584 

 luminosity-curve of, 585 

 ommatidial angle of, 172, 173 

 orientation to jDolarized light, 66, 70 

 spectral sensitivity of, 585 

 telotaxis in, 56, 58 

 vision of, 584, 585 

 Aplocheilichthys, iris, PI. II 

 Apoda, 333 



eyes, rudimentary, of, 730 

 pineal organ, 714 

 vision of, 599 

 Apodernus. See Mouse, field- 

 Apposition eye, 169, 173 

 Apteryx, 397, 398, 604 

 annular pad, 409 

 extinction of, 604 

 eyes of, 401 

 fundus, 410, PI. XII 

 pecten, 411, 413, 414 

 refraction of, 639 

 Apus (Triops), 76, 208 



dorsal light reaction in, 75 

 eyes of, 209 

 Aquatic placentals, 502 

 choroid, 457 



keratinization of cornea, 456 

 lacrimal passages absent, 494 

 lens, 474 



ocular adnexa, 501 

 sclera, 450 

 shape of eye, -448 

 sphincter muscle, 468 

 See also Cetaceans, Pinnipedes, etc. 

 vertebrates, lateral line, 534 

 Aqueous humour, drainage of, in mam- 

 mals, 472 

 origin of, in cyclostomes and fishes, 

 267 

 Arachnids, 211 

 eyes of, 211 



compound, 160 

 inverted retinae in, 149 



I 



