Gerbilliscus vallinus is a rodent of dry country in southern Namibia and northwestern South Africa. A species account describes a reddish-brown to dark grey-brown back, with a white belly, forelimbs, and feet.
The back is reddish brown or dark grey-brown; the belly, forelimbs, and feet are white.
The EWT assessment places it on gravel plains, dry riverbeds, and shallow sand, and describes branched burrows.
An extinction-risk assessment has not been added yet.