INDEX AND GLOSSARY 



753 



embryonic circulation of, 112-113 

 epithelium 



special extent of, 446 



special function of, 648 

 evolutionary origin of, 129-133 

 fibers, formation of, I 1 0- 1 I I 

 flatness index (diameter divided by thiclc- 



taxonomically: [ness) of 



fishes and amphibians, 266, 432, 435, 



chelonians, 610, 620, 669 [597, 602 



Alligator, 620 



Sphenodon, 620 



lizards, 620, 624 



snakes, 630 



birds, 642, 647 



monotremes, 669 



marsupials, 674 



anthropoids, 669, 683 



sirenians, 409 



whales, 414, 683 



seals, 445, 683 

 fluorescence and absorption of ultra-violet 

 location of, 592-593 [by, 196, 375 



migration of, 401-403 

 movement, consequences of, 265, 442 

 placode, 106, 109*-l 10, 124-125, 129-130 

 refractive index of, 29, 160, 265, 436, 647 

 regeneration of, 130-131 

 relative sizes and shapes of, 173, 212-214, 

 563, 590, 601-602, 673-674, 

 683-684 

 softness of, 436-438, 440, 610, 624, 647 

 spherical, 213-214, 407, 409, 445-446, 



604, 610, 683-684 

 spherical aberration of, 156, 160, 211 

 suturing of, 20, 110-112, III 

 taxonomically: 



lampreys, 191, 199-200, 557, 559-560 

 elasmobranchs, 200, 255, 563, 564-565 

 chondrosteans, 570 

 holosteans, 575 

 teleosts, 185, 213, 261, 387, 400-401, 



431,433-434,454,577,583 

 dipnoans, 590 



amphibians, 266, 592-593, 597, 601-602, 

 chelonions, 277, 437, 609-610 [606 



crocodilians, 614 

 Sphenodon, 618-620 



lizards, 173, 200-201, 623-624, 630, 632 

 snakes, 186, 201, 282-283, 438, 456, 630- 



631, 628, 633 

 birds, 173, 213, 441, 643, 645, 647-648 

 monotremes, 667, 669 

 marsupials, 173, 673-674 

 placentals, 173 201, 213, 255, 409, 413, 

 446, 678-684, 683 



man, 7, 10, 19-22, 31, 194 

 ienticonus, anterior, 436*-437 



lentiflavin, 199*, 515, 518 

 leopard frog: Rana pipiens, q.v. 

 Lepidosiren (dipnoan: South American 

 lungfish), 136 



dermal color changes in, 525, 537 



eye of, 263 



oculorotatory muscles of, 589 



optic nerve of, 591 



pigment epithelium of, 590 



pupil of, 223 



retinal photomechanical changes (claimed 



visual cells of, 216, 591 [for), 223 



vitreal vessels of, 653 

 Lepisosteus (holostean: gar) 



annular ligament of, 574-575 



chorioid of, 574 



falciform process (?) in, 575, 582 



iris of, 575 



lens of, 575 



lens-muscle papilla of, 264, 273, 575 



optic nerve and disc of, 576 



relationships of, 137 



retina of, 200, 576 



sclera of, 574 



size and shape of eye in, 381, 574 

 leptocephalus, 406* 

 Lepomis (teleost: a centrarchid) 



annular ligament of, 581 



color vision in, 484-486 



cornea of, 580 



twin cone of, 59 

 Leptodeira (reptile: a colubrid snake) 



closable pupil of, 162, 166 



retina of, 167, 638 



rhodopsin in, 166 



visual cells of, 638, 640 

 Leptophis (reptile: a colubrid snake), optic 



axes of, 294 

 Leptotyphlopida (reptiles: a fossorial snake 



eyes of, 627 [family) 



spectacles of, 450 

 Lepus (mammal: European brown hare), 

 habits, vision, anterior blind 

 field of, 296 

 Leuckart, law or ratio of, 174*, 346 

 Leydig, 542, 589 

 Lichanotus (mammal: an indrisine lemur), 



nocturnality of, 515 

 Lichanura (reptile: California rosy boa) 



canal of Schlemm in, 629-630 



ciliary body of, 629 



scleral pigment in, 628 

 Lichia (teleost: a scombroid), binocular 



field of, 292 

 lids (see also nictitating membrane, spectacle) 



adipose, 118, 381-384, 382-383 

 'imperforate', 459 

 as source of spectacle, 383, 450, 460-461 



