CARINATuE 

 Accipitriformes 



Bald Eagle. Haliaetus leucocephalus. Plate XXXIII. 



The fundus is mostly a dark reddish-brown, the lower half chang- 

 ing to a dull orange-red. The lower eyeground is covered with 

 choroidal vessels, and is dotted with brown pigment grains, giving 

 it a rough, granular appearance. A gray sheen pervades the upper 

 part of the fundus. On the temporal side and some distance from 

 the upper end of the optic nerve is a brilliant, white, round dot sur- 

 rounded by a small, light-green reflex ring, which is itself enclosed in 

 a brilliant, narrow, green macular region. On the nasal side of the 

 disc, and on a level with this macula is another area, of a gray color, 

 surrounded by a fan-shaped, luminous reflex. 



The optic nerve entrance is distinctly white, and along its centre 

 is strewn a large number of minute pigment dots. The outer margin 

 of the disk is bordered with black pigment, as if a shadow were cast 

 upon it by the pecten. 



White-bellied Sea Eagle. Heliaetus leucogaster. Plate XXXIV. 



The coloration of the eyeground is mostly dull-brown, the lower 

 quadrants of the field being covered with dull, orange-red, choroidal 

 blood-vessels. The disc is a long white oval, whose centre is tinted 

 with orange and covered with tiny pigment dots. The papillary 

 margins are white bordered with black pigment. 



The upper half of the fundus is covered by a mass of dull gray 

 dots. There is a well defined reflex near both macula?. 



The pecten is very large and comes well forward towards the 

 posterior surface of the lens. Both extremities of the organ are 

 clearly visible through the ophthalmoscope. There are very opaque 

 nerve fibres to be seen in any part of the eyeground. 



152 



