Wikipedia
Plestiodon
Plestiodon is the name for a genus of lizards formerly referred to as Eumeces, except those now placed in Mesoscincus.
The genus Plestiodon are skinks ( family Scincidae). They are secretive, agile animals with a cylindrical body covered with smooth, shiny scales.
The common name for these lizards with a blue tail is the common five-lined skink.