. The fundus oculi of birds, especially as viewed by the ophthalmoscope; a study in the comparative anatomy and physiology . Fig. 132. Tawny Owl (Syrnium aluco) Fig. 133. Greater Sulphur-crested Cockatoo {Cacalua galerita) Appearances of the Fundus Oculi in the Preserved Eyes of Birds. 94 THE FUNDUS OCULI OF BIRDS Burrowing Owl. Spcotyto cuniculariahypogoea. The ocular fundus of this species isirregularly round, as in all the Owls, andin prepared specimens the details show dis-tinctly. The single, temporal, oval macular regionlies above and about a disc length and a halffro
. The fundus oculi of birds, especially as viewed by the ophthalmoscope; a study in the comparative anatomy and physiology . Fig. 132. Tawny Owl (Syrnium aluco) Fig. 133. Greater Sulphur-crested Cockatoo {Cacalua galerita) Appearances of the Fundus Oculi in the Preserved Eyes of Birds. 94 THE FUNDUS OCULI OF BIRDS Burrowing Owl. Spcotyto cuniculariahypogoea. The ocular fundus of this species isirregularly round, as in all the Owls, andin prepared specimens the details show dis-tinctly. The single, temporal, oval macular regionlies above and about a disc length and a halffrom the upper end of the papilla. In thecenter of the macula is the fovea— a darkpigmented spot with fine granules arrangedcap-like above it. Outside this, again, is theovoid circumference of this region, incom-pletely edged with fine dots. These are morenumerously distributed below the maculathan above it. Connected with the macularregion is a light colored and rather broad bandthat extends horizontally to the center of thevisible background. It is unevenly dividedinto two strips by a parallel arrangement ofminute pigment dots. Seen from above the relatively
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Keywords: ., boo, bookcentury1900, bookdecade1910, booksubjecteye, bookyear1917
