COLORED DRAWINGS OF THF FUNDUS OCULI OF 



REPTILES. 



REPTILIA 



Turkish Gecko. Hemidactylus turcica.?. Plate LIX. 



The orange-red fundus is uniformly dotted with dark spots, 

 while the circular papilla is completely obscured by the chocolate- 

 brown pecten, whose pointed free end projects a medium distance 

 into the vitreous. Clearly defined, white linear medullated nerve- 

 fibres radiate from the disc margins, giving the effect of a halo about 

 the central zone of the picture. 



Horned Toad. Phrynosoma cornutum. Plate LX. 



The general coloration of the eyeground is a dark slate, irregu- 

 larly strewn with minute, whitish dots of various sizes. There is 

 an ill-defined macular region. The pear-shaped, grayish papilla 

 has a white margin, from which short fibres of unequal length radiate 

 towards the periphery. A single central (?) artery seems to originate 

 from the nerve-head and with its six branches — two on one side of 

 the disc, four on the other — is supplied mostly to the lower half of 

 the field. A small branch anastomoses above with a twig that runs 

 from the periphery of the fundus. 



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