760 



INDEX AND GLOSSARY 



Myliobatis — cont'd 



tapetum lucidum (lacking) in, 243, 568 

 visual cells of, 243, 518, 561, 568 

 Myocastor: Myopotamus, q.v. 

 myoepithelial: said of epithelial cells which 



are strongly contractile 

 myoid, 54*, 54-55 

 myopia, 27*, 27, 252-253, 547* 



as normal for animals, 286 

 Myopotamus {-Myocastor; mammal: a 



rodent; coypu), pupil of, 221 

 Mysticeti (mammals: baleen whales; see 



whales) 

 Myxine (cyclostome: a hag) , eye of, 387, 562 



N 



Nagel, 490, 506 



narwhal: Monodon; 412 



nasad: toward the nose 



nasad asymmetry, 173, 300*, 643, 678-679 



carried to logical conclusion, 403 

 nasolacrimal duct (see lacrimal system) 

 Natrix (reptile: a colubrid snake) 



amphibious species of, soft lens in, 438 



dermal color changes in, 542 



eye and accommodation in, 438, 456 



scleral pigment in, 628 



spectacle of, 456 



development of, 454-455 



visual cells of, 59, 63, 165, 637 



visual fields of, 294 

 Nautilus (mollusc: chambered nautilus) 



eye of, 3 



development of, 119 



pinhole pupil of, 256 

 Navy, U.S., color-filters of, 198 

 near point, 252-253* 

 near-sightedness: myopia, q.v. 

 neck, importance of , in vision, 303,305,307, 

 309,311,318,342,377,419,432 

 NectuTus (amphibian: a proteid urodele; 

 mud -puppy ) 



eye and adnexa of, 405-407, 601 



lens index of, 602 



retinal elements of 

 counts of, 603 

 size of, 603 



scleral cartilages of, 602 

 needlefish: Belone, q.v. 

 Nematalosa (teleost: a clupeoid), adipose 



lids of, 383 

 Nemestrinus (mammal: a macaque) 



color vision in, 515 



cerebral 'color cells' in, 523 

 Neobalccna (mammal: a baleen whale), 411 

 Neoceratodus (dipnoan: Australian lung- 

 fish), 136-137 



eye size and habits of, 263 



falciform process (?) in, 590 



need for investigation of, 263, 589-590 



optic nerve of, 591, 632 



possible accommodation of, 263, 273 



visual cells of, 591, 688 

 Neognathce higher birds), 650*; pecten in, 



649-650 

 nerves associated with eye (see also optic 

 nerve) 



vertebrates in general, 172, 422 



taxonomically: 



lampreys, 556 



teleosts, 597 



amphibians, 597 



crocodilians, 422 



Sphenodon, 617 



lizards, 423 



birds, 172 



man, 38 

 neuroglia: ectodermal elements which serve 

 as the special conneaive tissue of 

 the central nervous system (see 

 also pecten, conus papillaris); 48- 

 49, 560, 569, 591, 631-632 

 neurohumors, 529* 

 neutral point, 98*, 470, 493, 516 

 Newton, 88 



Newton-Miiller-Gudden, law of, 319-320* 

 newts (see Urodela) 

 Nicolai, 506 

 Nicolas, 156, 312 



nictitans: nictitating membrane, q.v. 

 nictitating membrane, 118*, 420 



consensual reflex of, 325 



development of, 118 



false, 383-384* 



functions of, 420, 449, 452 



lens-like action of, 273, 440 



taxonomically: 



elasmobranchs, 382, 429, 563 



anurans, 266, 421,429, 593 



urodeles, 601 



chelonians, 42 1 -422 



crocodilians, 421 



Sphenodon, 421,617 



lizards, 421,423,617 



snakes, 455 



birds, 118, 325, 420-421, 424-425 

 amphibious, 273, 440 



mammals, 118, 412, 426-427, 443, 445, 

 665, 671 

 man, 38 

 night lizards: Xantusiidae, q.v. 

 night monkey: Aotus, q.v. 

 night-blindness: nyctalopia, q.v. 

 nighthawk, eyeshine of, 646 

 nightingale: Luscinia, q.v. 

 Noback, 665 



