MAMMALIA. 
39 
6 . MUS LONGICAUDATUS. 
Plate XI. 
Mus longicaudatus, Bennett , Proceedings of the Committee of Science and Correspondence of the Zoological 
Society of London for January, 1832, p. 2. 
M. pallid £ Jlavescenti-fuscus ; corpore subtiis albo, leviter Jlavo lavato ; pedibus albis ; 
tarsis permagnis ; caudd perlonga ; auribus parvulis. 
Description. — Fur long and soft; general colour pale yellow-brown, the hairs 
of the ordinary fur being fulvous near the apex, and the longer hairs brown. 
On the sides of the body, cheeks, and external side of limbs, the fulvous hue 
prevails. The inner side of the limbs and the under parts of the body are 
white, but have an indistinct yellowish hue. All the hairs of the body are 
of a deep gray colour at the base. The ears are small, well clothed with 
hairs ; those on the inner side are chiefly yellow ; externally, on the fore part 
they are brown, and posteriorly whitish. The feet are of a flesh-colour, and 
furnished above with white hairs ; the tarsi are but sparingly provided with 
minute hairs on the upper side, and are naked beneath : they are of unusually 
large size. The fore feet are of moderate * size, and furnished with a very 
large carpal tubercle. The tail is very nearly double the length of the body, 
if the latter be measured in a straight line ; it is of a brownish flesh-colour 
above, paler beneath, and sparingly furnished with minute bristly hairs ; 
those on the upper surface being brown, and on the under side white. The 
hairs of the moustaches are long, of a black colour, and grayish at the 
apex. 
Length from nose to root of tail 
of tail 
from nose to ear 
Habitat, Chile. 
In. Lines. 
. 3 9 Length of tarsus (claws included) . 
. 5 3 of ear ... 
. 0 10 $ 
In. Lines. 
. 1 1 
. 0 4> 
* As I shall have occasion to use the terms moderate , long , short, large, &c. it may be well to state that 
I take the common mouse, ( Mus Musculus,) as my standard of comparison. The ears, feet, tail, length of the 
fur, general proportions, &c. are in that animal what I term moderate. 
