What is "rhagamys"

Rhagamys is an extinct genus of rodents in the subfamily Murinae, the Old World mice and rats. The genus was established by the Swiss zoologist Charles Immanuel Forsyth Major to accommodate Rhagamys orthodon, commonly known as Hensel's field mouse or the Tyrrhenian field rat, which is the only species in the genus. It was endemic to the Mediterranean islands of Corsica and Sardinia, where it first appeared in the fossil record in the Late Pleistocene, and was relatively large in size, weighing up to 50 g.