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, WaterL, Proceedings of the Zoological Society of London, for January 1837, p. 17. 



M. supra fuscus flavo lavatus ; subtus albus ; rhinario flavo ; auribus parvulis, intiis 

 pilisflavis obsitis ; mystacibus longis, canis, ad basin nigrescentibus : caudd corpore 

 breviore, supra fused, ad lateraflavescente, subtus sordide alba : pedibus anticis, tar- 

 sisque flavis, 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 



1 7| 



10 



Length of tarsus (claws included) 

 of ear 



In. 



Lines 







9 







31 



Habitat, Hardy Peninsula, Tierra del Fuego, {February.) 



The white, which is usually confined to the under parts of the body, in this 



