Dipus Aegyptius

from The Collaborative International Dictionary of English v.0.48

Jerboa \Jer*bo"a\, n. [Ar. yarb[=u]`.] (Zool.)
   Any small jumping rodent of the genus {Dipus}, esp. {Dipus
   Aegyptius}, which is common in Egypt and the adjacent
   countries. The jerboas have very long hind legs and a long
   tail. [Written also {gerboa}.]
   [1913 Webster]

   Note: The name is also applied to other small jumping
         rodents, as the {Pedetes Caffer}, of the Cape of Good
         Hope.
         [1913 Webster]

   {Jerboa kangaroo} (Zool.), small Australian kangaroo
      ({Bettongia penicillata}), about the size of a common
      hare.
      [1913 Webster]