764 



INDEX AND GLOSSARY 



passerine birds: Passeriformes, q.v. 

 Patella (mollusc: limpet), eye of, 3 

 Pauli, 538 

 Pavlov, 507 



pearl-fish: Encheliophis, q.v. 

 pearls, artificial, 235 



pecten (see also conus papillaris), 118, 180, 

 188, 308, 365-367, 625, 643, 649 



significance of, 648-659 



size of, 655-657 

 Pedetes (mammal: a rodent, not a lago- 

 morph; Cape jumping 'hare' ) , pin- 

 hole pupil of, 162, 221, 228, 257 

 Pegel, 491 

 Pelagosaurus (reptile: extinct crocodilian), 



scleral ossicles of, 274 

 Pelecus (telecst: a cyprinid), retinal tapetum 

 pelicans [lucidum of, 236 



eye mobility in, 307 



feeding method of, 439 

 Pelobates (amphibian: an anuran) 



pupil of, 223 



scleral cartilage of, 595 

 Pelobatidce (amphibians: an anuran family), 

 oil-droplets (lacking) in, 599-600 

 penguins 



binocular vision in, 291, 295 



depth of diving by, 226 



feeding habits of, 439-440 



lacrimal system of, 425 



orbit of, 307 



pupilsof, 221,226, 439 



reaction to movement by, 344 



seasonal changes of iris color in, 550 



taxonomic position of, 650 



vision of, 273, 344, 439, 448 

 Perameles (mammal: a bandicoot), conus 



papillaris of, 672 

 Perca (teleost: perch), visual-cell mosaic of, 

 Percidae (teleosts: perch family) [587 



binocular field in, 292 



horizontal cells in, 585 



retinal tapetum lucidum in, 236-237, 240, 

 percoids: Percidae et al [585 



optic nerve and disc in, 179 



spertacles in, 460 

 perimeter: a clinical instrument for mapping 



the visual field of the eye 

 Periophthalmus (teleost: mud-skipper), 431 



annular ligament of, 581 



eye and habits of, 43 1 -43 3 



flatness index of lens in, 435 



sphincter pupillee of, 160 

 periscopy, 214, 291, 297, 376-377*, 414 



agility as substitute for, 445 (c/. 444, 



horizontal pupil and, 293, 443 [bottom) 

 Perissodactyla (mammals: odd-toed 'ungu- 



avascular retinze of, 684 [lates'), 676* 



ciliary processes of, 681 



cones of, 688 



corpora nigra of, 679 

 Perlia, nucleus of, 302* 



Perodicticus (mammal: a lemuroid), color 

 vision and cerebral 'color cells' 

 (lacking) in, 523 

 persistence-time (see retinal image) 

 perspective, 314* 



aerial, 314* 

 Petaurus (mammal: a flying phalanger; 

 marsupial 'flying-squirrel'), 664 



possible tapetum lucidum of, 241, 672 

 Peters, 404 



Petit, canal of, 7, 19* 

 Petit, 692 (entry for p. 409) 

 petrels, feeding method of, 439 

 Petromyzon (cyclostome: a lamprey) 



chorioid of, 558 



size of eye in, 556 



visual cells of, 560-561 

 Petromyzonida (cyclostomes: northern lam- 

 prey family), 555*, 562 

 Phalacrocorax (bird: cormorant) 



accommodation in, 273, 440-441 



anterior segment of, 441 



coloration of eye and vicinity in, 547-548 



depth of swimming in, 226 



and guano, 235 



habits and eye of, 439-441 



orbit of, 307 



ringwulst of, 647 

 phalangers: an assemblage of marsupial 



ecology of, 664 [mammals 



flying-: Petaurus {q.v.), et al; 664 

 Pheophilaktova, 506 

 Phelsuma (reptile: a lidded gecko) 



diurnality of, 203, 465, 627 



possible color vision of, 465, 520 



pupil of, 203, 220, 627 



visual cells of, 203, 520, 627 

 phi-phenomenon (see movement, strobo- 



scopic apparent) 

 Phoca (mammal: a seal) 



diagonal slit pupil in, 221, 228, 448 



ocular structure and vision in, 445-448, 



optic axes of, 297 [446 



tapetum lucidum in, 234 

 Phoccena (mammal: porpoise), eye of, 413 

 Phocidae (mammals: true seals; see Pinni- 

 P holts (teleost), fovea in, 304 [pedia) 



Photoblepharon (teleost), photophore associ- 

 ated with eye in, 396-397, 405 

 photochemical substances in vision (see also 

 iodopsin, porphyropsin, rhodopsin, 

 zapfensubstanz), 464 

 photochromatic interval, 92* 

 photocyte, 53* 



