INDEX AND GLOSSARY 



769 



birds, 500-501 



mammals, 509-511 

 Putorius (mammal: a mustelid carnivore; 



polecat), sensory capacities of, 508 

 Pygopodidae (reptiles: snake-lizard family) 



contrasted with snakes, 634, 636 



habits of, 200 



loss of fovea by, 621, 625 



pupils of, 220 



spectacles of, 450 



visual cells of, 200, 626 

 Pygopus (reptile: leaf- footed lizard) 



conus papillaris of, 653 



evolution of, 636 

 pyriform : pear-shaped 

 Python (reptile: a pythonine boid snake) 



canal of Schlemm in, 629-630 



ciliary body of, 629 



hyaloid vein of, 629 



optic axes of, 294 



retina of, 636 



scleral pigment of, 628 

 pythons: Pythoninas (a boid sub-family) 



rabbits (and hares) 



ciliary muscle of, 286 



color change in, 524 



color vision in, 511-512, 521 



electroretinography of, 521 



eye-movements of, 310, 312 



fixation by, 310 



laterality of, 291, 296 

 optic axes and, 297 



lid-reflex, non-consensual, of, 425 



optic chiasma in, 320 



speed -sense of, 345 



visual fields of, 296-298 

 Rabl, 655 



raccoon, color vision in, 507-508 

 racers: Coluber and related genera 



iris 'C ^f, 549 



yellow lenses of, 199 

 Radford, 198 

 Rahn, 542 

 rainbow snakes: the colubrids Abastor and 



Farancia, qq.v. 

 Raja (elasmobranch: a ray), 692 (entry for 

 p. 386) 



eye of, 158, 255 



retraaibility of, 429 



operculate pupil in, 158, 222 



stenopaic aaion of, 224-225, 256, 386 



range of, 394 



retina in, 568 



ramp arrangement of, 255 



toleration of light by, 429 

 Ramon y Cajal, 322 



Rana (amphibian: common frog: see also 



color vision in, 491-494 [Anura) 



cornea of, 601 



dermal color changes of, 535-537 



eye of, 594-595 



eye-mask in, 545 



iris folds of, 596 



pupillary nodules of, 595-596 



retina in, 148 



photomechanical changes of, 148 



scleral cartilage of, 595 



scotopic spectrum of, 101 



visual cells of, 54-55, 59, 148, 599 

 rhodopsin in, 101 

 Ranidae (amphibians: common frog family) 



habits of, 436 



taxonomic position of, 593 



visual cells in, 598-599 

 rapid peering, 341* 



Rastrelliger (teleost: a scombrid), adipose 

 rat: Rattus sp. [lids of, 383 



color vision in, 508-510 



eye-movements of, 312 



optic axes of, 297 



optic chiasma of, 319 



vision of, without cortex, 337 



visual acuity of, 207, 312, 353 



visual cells of, 215-217 

 Ratites (ostrich-like birds), binocular fields 



of, 295 

 rat's-tails: Coryphasnoididas, q.v. 

 rattlesnakes: Crotalus {q.v.) , Sistrurus 

 Rayleigh effect, 197* 

 rays: Batoidei (in part), q.v. 

 Redfield, 540 

 Reeves, 481, 483-487, 489 

 reflection coefficient, 244* (see also albedo) 

 refraaion (see also accommodation, dioptrics) 



of eye: the condition (or the determin- 

 ation of the condition) of an eye 

 with regard to astigmatism, hyper- 

 metropia, myopia, etc.; 272-273 

 (Table VIII), 286-287 



TAXONOMICALLY: 



lampreys, 258 

 elasmobranchs, 260 

 teleosts in general, 263 

 Periophthalmus, ^llA^i 

 Anabas, 431 

 amphibians, 436 

 chelonians, 436-438 

 crocodilians, 436 

 birds, 439-442 



mammals in general, 444, 669 

 sirenians, 409 

 seals, 447-448 

 of light, 22*, 22-23, 24 



index of, 22*, 29, 183-184, 265, 436 



