48 



SKETCH OF THE HISTORY OF MAMMALIA. 



its eyes are full and black ; the ears are large, rounded, 

 and almost naked. The general fur is bright bay, 

 variegated on the back with pencil-like strokes of dark 

 brown ; the under parts are white; the tail is cylindrical, 

 thickly covered with short hair, except at the tip, which 

 is somewhat tufted, and of a dark brown. 



Mitchell's Gerboa. 



This animal, a native of Australia, and described by 

 Mr. Ogilby under th6 name of Dipus Mitchellii (' Linn. 





30.— Mitchell's Gerboa. 



