. The fundus oculi of birds, especially as viewed by the ophthalmoscope; a study in the comparative anatomy and physiology . oscopically. These findings havebeen mostly pictured in the text or by ap-pended colored plates, and will now bedescribed. A. RATITAE Struthioniformes Nubian or Northern Ostrich. Struthiocamelus. (Figs. 116 and 77; macroscopicview). The black and white drawing of thisfundus shows a large, regularly oval papillasprinkled with pigmented dots and circled bya well-defined border. The foreshortened view of the pecten givesone the impression of an octopus-like figurelying upon
. The fundus oculi of birds, especially as viewed by the ophthalmoscope; a study in the comparative anatomy and physiology . oscopically. These findings havebeen mostly pictured in the text or by ap-pended colored plates, and will now bedescribed. A. RATITAE Struthioniformes Nubian or Northern Ostrich. Struthiocamelus. (Figs. 116 and 77; macroscopicview). The black and white drawing of thisfundus shows a large, regularly oval papillasprinkled with pigmented dots and circled bya well-defined border. The foreshortened view of the pecten givesone the impression of an octopus-like figurelying upon and almost covering the surface ofthe optic disc, which is plainly visible beneathand sprinkled with pigment dots. There arereadily counted twenty-four pectinate con-volutions (12 double folds) that meet aboveand are joined to an irregularly ovoid body —the crest or free margin of the marsupium —apparently by a sort of purse-string folds of the pecten are extremely thin andentirely unlike the great majority of the con-volutions in carinate birds. [64J THE FUNDUS APPEARANCES IN VARIOUS ORDERS OF BIRDS 65. Fig. 116. Nubian Ostrich (Struthio camelus) X3.
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Keywords: ., boo, bookcentury1900, bookdecade1910, booksubjecteye, bookyear1917
