MAMMALIA. 
53 
mouse {Mus Musculus ), its colour is much darker. In possessing a glossy fur it 
differs from most of its congeners ; its head is also proportionately larger, and the 
incisors are much stronger. 
The molars of the upper jaw are figured in plate 34, fig. 9, a , — and fig. 9, b, 
represents those of the under jaw. 
“Very abundant in gardens and hedges, far from houses; and was easily 
caught in traps baited either with cheese or meat.” — D. 
16. Mus XANTHORHINUS. 
Plate XVII.— Fig. 1. 
Mus xanthorhinus, Waterh., Proceedings of the Zoological Society of London, for January 1837, p. 17. 
31. supra fuscus flavo lavatus ; subtus albus ; rhinario jiavo ; auribus parvulis, intiis 
pilis Jlavis obsitis ; mystacibus longis, canis, ad basin nigrescentibus : caudd corpore 
breviore , suprh fused, ad latera jlavescente, subtus sordidb alba : pedibus anticis , tar- 
sisque Jlavis, digitis albis : vellere longo, molli. 
Description. — Fur moderately long and loose ; ears rather small ; tail shorter 
than the body ; general colour gray washed with yellow, the yellow colour 
prevailing, especially on the sides of the body ; muzzle, inner side of ears, 
and tarsus, of a rich yellow colour ; toes, chin, throat, under parts of body, 
and rump, white ; all the fur deep gray at the base ; the hairs on the 
upper parts and sides of the body broadly annulated near the apex with 
rich yellow, and at the apex dusky ; on the under parts of the body the 
hairs are broadly tipped with white. Tail rather sparingly furnished with 
hair, that on the upper surface brown, on the sides yellow, and on the under 
surface whitish. The hairs of the moustaches are white — some of them 
dusky at the base. The incisor teeth are rather slender, and of a pale yellow 
colour. 
Length from nose to root of tail 
of tail 
from nose to ear 
In. Lines. 
. 3 6 Length of tarsus (claws included) . 
. 17^ of ear ... 
. 0 10 
Habitat, Hardy Peninsula, Tierra del Fuego, {February.) 
In. Lines. 
. 0 9 
. 0 3f 
The white, which is usually confined to the under parts of the body, in this 
