130 
FOSSIL REPTILIA OF THE LIASSIC FORMATIONS. 
If the distant expanse of waters was to be scanned, the resumption of the normal position 
of the sclerotic ring and of the relaxed relations of the overlapping plates would coincide 
with an expansion of the pupil and flattening of the cornea, whereby the eye would thus 
acquire a telescopic range. Moreover, the wide transparent corneal aperture of the con- 
spicuously large organ of vision would enable the predatory Saurian to take advatage of 
the least amount of light penetrating the depths of its marine environment. 
