810 



INDEX 



Lacerta, accommodation in, 651 

 embryo, median eye, 712, 713 

 extra-ocular muscles, 368 

 lens, 360 



median eye, 715, 718 

 transverse muscle, 357 

 visual field, binocular, 680, 682 

 galloti, fundus, 361 

 monitor. See Varanus. 

 muralis, 355 

 conus, 362 

 viridis, conus, 363 

 iris, 358 



ocular movements of, 694 

 visual responses, 665 

 vivipara, colour vision in, 629 

 vulgaris, conus, 362 

 Lacertilians, 353 



accommodation in, 651 

 colour changes in, 88 

 vision in, 623, 628 

 eyes of, 355 j^^., 356 



degenerate, 733 

 fundi, PI. VI 

 irides, PI. V 



migration of retinal pigment in, 614 

 ocvilar movements in, 694 

 olfactory sense of, 599 

 parietal eye, 715, 716 



function of, 719 

 pupils, contractile, 612 

 refraction of, 639 

 retina, pure-cone, 611 

 vision of, 599 

 visual acviity of, 661 



fields, binocular, 680, 682 

 uniocvilar, 672 

 See also Iguana, Lacerta, Chameleon, 

 etc. 

 Lacewings, 219, 220 

 Lacrimal glands, characteristics in 

 anurans, 345 

 birds, 425 

 chelonians, 375 

 crocodilians, 378 

 lacertilians, 367 

 marsupials, 441 

 monotremes, 437 

 placentals, 493 

 urodeles, 349 

 passages, characteristics in 

 anurans, 345 

 birds, 425 



Lacrimal passages, characteristics in 

 crocodilians, 378 

 placentals, 494 

 snakes, 393 

 Lcemargus, 281 



scleral cartilage, 281 

 Lagomorpha, 445 

 angle gamma, 677 

 retinal vascularization, 479 

 vision of, 601 

 See also Hare, Rabbit. 

 Lagostomus. See Vizcacha. 

 Lamellibranchs. See Bivalves. 

 Lamina cribrosa, in placentals, 487,488,489 



ganglionaris, in arthropods, 524 

 Lamna cornubica, 283 

 iris, 285 

 pupils, 287 

 tapetum, 283 

 Lampanyctus, visual cells of, 305, 611 

 Lampetra, 260 

 activity of, 34 

 colour changes in, 95 



nervous control of, 537, 558 

 rhythmic, 20 

 fluviatilis, 260 

 eyes of, 265 



median, 716, 717 

 optic nerve, 270 

 retina, 268 

 visual cells, 269 

 planeri, eye of, 264 

 Lamprey, 260 

 eyes of, 263 



median, 713, 714, 716, 717 

 larva. See Ammocoetes. 

 visual field, binocular, 678 

 See also Cyclostomes, Lampetra, 

 Petromyzon. 

 Lamprocolius chalybeus, iris, 407 

 Lampropeltis getulus, iris, 387 



optic disc, 390 

 Lamp -shells. See Brachiopods. 

 Lampyridae. See Lampyris, Photinus. 

 Lainpyris, bioluminescence in, 746 

 compound eyes of, 168, 172 

 nod Hit ca, 740 



splendidula, luminous organs of, 736, 

 742 

 Lancelets, 228 



See also Amphioxus. 

 Langur, 607 



colour vision in, 635 



