72 
ZOOLOGY OF THE VOYAGE OF THE BEAGLE. 
This species is of a darker colour than the last, its ears are much larger and 
the tarsi are shorter. It has the same rabbit-like appearance. The molar teeth 
of the lower jaw are figured in Plate 33, fig. 4, a. 
“ This mouse, when alive, from its very large eyes and ears, had a singular 
appearance, somewhat resembling that of a little rabbit. It frequents small 
thickets in the open grassy savannahs near Maldonado, and was caught with 
facility by means of traps baited with cheese. ’ — D. 
3. Reithrodon chinchilloides. 
Plate XXVII. 
R. vellere longissimo et mollissimo ; corpore supra et ad latera cinereo ,flavescenti-fusco 
lavato, subtus Jlavescenti-albo ; caudd corpore breviore, supra fused, subtus alba : 
auribus parvulis : tarsis mediocribus. 
Description. — Ears small; tail shorter than the body; tarsus moderate; fur 
long and extremely soft. General hue of the upper parts of the head and 
body ashy-brown ; the lower part of the cheeks and sides of the body are 
of a delicate yellow colour ; the under parts of the head and body and the 
rump are cream colour. The ears are blackish ; * the tail is tolerably well 
clothed with longish hairs, which are, however, not so thickly set as to hide 
the scales —on the upper side they are blackish brown; on the sides and 
beneath they are white. The feet are white. All the fur is of a deep gray 
colour at the base ; the hairs of the back are of a very pale yellow colour 
(almost white) near the tip, and brown at the tip ; the longer hairs are black 
at the apex. The incisors are yellow ; the hairs of the moustaches are 
numerous and very long — some of them are whitish, and others are black at 
the root, and gray at the apex. 
In. Lines 
Length from nose to root of tail . .50 
of tail . ... 2 4 
from nose to ear . .12 
Habitat, South shore of the Strait of Magellan, near the Eastern entrance. 
This little animal was preserved in spirit, and has since been mounted, it is 
* They are naked, but I suspect the hair has been rubbed off. 
Length of tarsus (claws included) 
of ear 
In. Lines. 
1 0 
0 5 | 
