The ink turtle is the name of the grass turtle when it grows up. Turtle, also known as grass turtle, Chinese grass turtle. The head is moderately large. The end of the snout is cut obliquely downward toward the inner side; the horny sheath of the rostral margin is weak. The angle of intersection between the right and left denticles of the lower jaw is less than 90 degrees. Dorsal armor with 3 longitudinal ribs. Males smaller, head and neck, ventral armor, dorsal armor, tail are black, tail longer, with odor; females larger, head greenish olive, close to brown, neck side with irregular yellowish or white short stripes, ventral armor, dorsal armor brownish yellow or brown, tail shorter, no odor.