108 HALLOMYS AUDEBERTI. 



body , in and outsides fo forearms and thighs slate- 

 colored near the base , on the head , back and sides of 

 the body each hair having a black tip , separated from 

 the slate-coloured base by a rather broad yellowish brown 

 ring; whilst the hairs of the fore-arms and thighs are only 

 broadly tipped with reddish broAvn : intermixed are some enti- 

 rely black ones. Chin , lower parts of cheeks , throat , 

 chest , and middle of belly and abdomen pure white : along 

 the sides of that white streak the hairs are colored like 

 those of the forearms and thighs. Hairs of hands and 

 feet dark brown. Whiskers black, tho foremost pure 

 white. The hairs of the upper parts of the tail near its 

 root are black, for the rest they are uniformly brown, 

 except those of the tip of the fail , which are pure white. 



Ears oblong and broadly naked , blackish brown , well 

 rounded towards the tip. 



Whiskers very long, projecting beyond the tip of the 

 ear; the foremost are short. 



Tail closely behaired , shorter than head and body. 



The feet are comparatively much longer and more develo- 

 ped than in any other species of Mice hitherto known , nay 

 comparatively longer than in the much larger Hypogeomys 

 antimena — thus showing its leaping habit. — The toes also 

 resemble those ol Pedetes , Scirtetes and Meriones , the three 

 middle toes — and especially the midmost — being very 

 elongated. The outerones are much shorter and attached 

 very high up : the first toe is the shortest. The fingers 

 also are more developed than usually, the thumb is the 

 shortest , the third finger the longest , the second and fourth 

 finger being of the same size. 



The claws of the fingers about half the size of those of 

 the feet; the latter being very strong. Long curved rigid 

 hairs, growing at the root of the nails, are overhanging 

 the almost straight claws. The claws are brownish white 

 colored. 



Cutting- teeth smooth , white towards the points ; upper 

 ones brownish orange, lower ones yellowish. 



Notes from the Leyden UXXuseuxn. 



