Scinax is a genus of frogs (snouted treefrogs) in the family Hylidae. These frogs live in eastern and southern Mexico to Argentina and Uruguay, Trinidad and Tobago, and Saint Lucia. These are small to medium-sized tree frogs. Duellman and Wiens brought this genus back into use in 1992. The name originates from the Greek word "skinos", meaning fast-moving or nimble.