Category:Trionyx

Tri*on"yx, n. Etym: [nl., fr. Gr. Tri-) + (zoöl.)

Defn: a genus of fresh-water or river turtles which have the shell Imperfectly developed and covered with a soft leathery skin. They are Noted for their agility and rapacity. Called also soft tortoise, Soft-shell tortoise, and mud turtle.

Note: the common american species (trionyx, or aspidonectus, ferox) Becomes over a foot in length and is very voracious. Similar species Are found in asia and africa.