488 PROCEEDINGS OF THE INDIANA ACADEMY OF SCIENCE. 



The Map Turtle is usually free from growths of algae or other organisms. 

 The young differ from the older in being decidedly more strongly keeled, 

 the portions of the carapace each side of the keel being rather straight, so 

 that the shell of the young turtle lookh somewhat like a roof. The young 

 are covered with delicate reticulations which give pleasing color patterns, 

 but which disappear more or less completely in the adult. This is one of the 

 mo»t inoffensive of the turtles and can hardly be induced to bite. 



Carapace ovate, broadest behind, the margins flaring outward, highest 

 near the middle and not strongly convex; carapace strongly notched behind 

 and usually decidedly keeled. Color, dark olive brown, with greenish and 

 yellowish streaks and reticulations, especially distinct on neck, legs and edge 

 of carapace; plastron yellowish. 



