766 



INDEX AND GLOSSARY 



placental mammals — cont'd 

 eyes of, 676-689 



habits of, 143, 145, 169-171, 176-178, 

 201, 203-204, 208-210, 227-228, 

 296, 310-312, 677, 684-689 

 imitation of, by marsupials, 664 

 intraocular color-filters of, 143, 191, 199, 

 ins in, 648, 679 [201, 204-205 



lens in, 674, 680-684 



yellow coloration of, 143, 199, 201, 

 204-205 

 movement-perception of, 342-365 

 nasad asymmetry in, 173, 300 

 ocular proportions in, 171-175, 173, 211- 

 214, 213, 255, 300, 672, 677-678 

 optic axes in, 296-297 

 optic chiasma in, 52, 319-320, 330 

 optic disc in, 179-180 



multiple, 367 

 origin and evolution of, 134-135, 138-139, 



284, 675-676, 686-689 

 pineal gland (epiphysis) of, 339 

 pupils of, 150, 154-158, 162-163, 218- 

 219, 221, 227-228, 245, 256-257, 

 corpora nigra of, 219 [299 



retina in, 49-50, 176-178, 187, 217, 

 684-689 

 circulation of, 50-51, 191, 201, 204, 

 654, 684 

 sclera in, 678 

 tapetum lucidum and eyeshine in, 232-233, 



228-235, 238-239, 241, 243-246 

 vision of, 145, 168, 211-212, 215-216, 



245-246, 338 

 visual acuity in, 207, 245-246 

 visual cells of, 56-58, 166, 176-178, 201, 



215-217, 245, 588, 684-689 

 visual fields of, 289-292, 296-298 

 Platanista (mammal: a blind dolphin; susa), 

 habitat and degenerate eye of, 210, 

 Plateau, 357 [412 



Plath, 499-500 

 Platichthys (teleost: a flounder), pupillary 



operculum in, 386 

 platinic chloride, as test for rhodopsin, 75 

 platypus: Ornithorhynchus, q.v. 

 Platyrrhina (mammals: New-World anthro- 

 poids), taxonomy and color vision 

 of, 516-517, 521 

 platysma (see muscles) 

 Platytroctes (deep-sea teleost), shape of eye 



in, 402 

 Plecostomus (teleost: an armored catfish), 



operculate pupil of, 158, 222, 386 

 plectognaths (teleosts), 580* 

 corneal laminations in, 580* 

 falciform process (lacking) in, 582 

 vitreal vessels in, 582-583 



Plethodon (amphibian: slimy salamander), 



retinal summation of, 603 

 PlethodontidsE (amphibians: a urodele fam- 

 sclera in, 601 [ily) 



taxonomic position of, 600 

 PleuTonectes (teleost: a flounder), dermal 



color changes in, 534 

 Pleuronectidae (teleosts: right-handed floun- 

 ders), turreted eyes and pupils of, 

 386 

 PleuTOsauTus (reptile: extinct rhynchoceph- 



alian), scleral ossicles (lacking) 

 plica semilunaris, 38* [in, 274 



plumula Halleria: campanula, q.v. 

 Podargus (bird: frogmouth) 



adaptation for bright retinal image in, 642 

 crepuscularity of, 208 

 eye-closing habit in, 546-547 

 eyeshine in, 240 

 feeding method of, 169 

 as owl ancestor, 309 

 pecten of, 656 

 scleral ossicles of, 644 

 tubular eye of, 212, 642 

 P6tzl, 364 



poikilochromic: capable of changing color 

 poikilothermous : said of so-called cold-blood- 

 ed animals — i.e., those whose body 

 temperature is not under physiol- 

 ogical control and hence approxi- 

 mates that of the environment 

 polar bear (see bears) 

 polecat: Putorius, q.v. 



Polistotrema (cyclostome: a hag), eye of, 

 Pollachius (teleost: pollack) [562 



falciform process in, 582 

 visual cells of, 586 

 pollack: Pollachius, q.v. 

 Polydactylus (teleost: a polynemid), cornea 



and spectacle in, 450, 460 

 Polyipnus (deep-sea teleost), branched optic 



nerve of, 367 

 PolynemidsE (teleosts: a percoid family), 



spectacles in, 460 

 Polyodon (chondrostean: spoonbill), 137, 



264, 569; binocular vision in, 292 

 Polypedates (amphibian: Javanese flying- 

 frog), pupil of, 223 

 Polypedatida (amphibians: an anuran fam- 

 oil-droplets (lacking) in, 599-600 [ily) 

 pupils of, 223-224 

 Polyprion (teleost: a serranid), guanin in 



retina of, 585 

 Polypterus (cladistian: bircher) 

 eye of, 263, 589 



eyeshine and tapetum lucidum in, 240 

 habitat of, 136, 588 

 multiple optic papilla of, 367, 589, 606 



