215 
in. lin, 
Length of the nasal bones. . SLAPS Pa BE: 
SON DUG MMOIE TADOG oc ee emcee ose 0 22 
—— — from anterior edge of first molar to Ee 
of imeisor °o... . : 0 4 
of lower jaw, from point of incisor to ex- 
MGUMALY OL COMGVIE 25 i o's wae yinet siscen dries sfaiebis 0 9 
— of molar range .... 0 25 
Height from angular process to ‘top of coronoid 
BIMBO a hi ania dalaciiae <2 Sterna ts ty) OL 4 
Obs. This species may readily be distinguished by its short head, 
broad feet, long and but slightly tapering tail with its terminal tuft 
of hairs, and by the clear line of demarcation of the colours of the 
upper and under parts. These peculiarities tend to give it less of a 
rat-like appearance than its congeners, and induced me at first sight 
to regard it as referable to some other genus,—an illusion that was 
dispelled by an examination of the cranium. 
11. H. minutws, n. s. 
It is with some hesitation that I proceed to name and describe 
this species, not from any doubt as to its being perfectly distinct, but 
on account of the only specimen received being a young animal, so 
that the description might not apply with exactness to one perfectly 
adult. However, it is probable that it has attained nearly, if not 
quite, its full size, as the teeth, although unworn, exhibit a propor- 
tionate degree of prominence compared with those of other species ; 
and its cranium, although rounded posteriorly as in young Muride, 
is yet firmly united at its sutures. I find that very nearly full- 
grown individuals of H. longicaudatus have more distinct indications 
of immaturity than the specimen in question. 
It is a rather remarkable species, scarcely larger than the smallest 
of our British quadrupeds (the Harvest Mouse), but with a tail nearly 
twice the length of its own body, and very long and soft fur, in 
colour like that of the Water Vole, both above and below. 
The ears are short, but rather broad, almost black, and a little 
hairy near their margins. The*whiskers are long, fully as long as 
those of H. renggeri, and the upper surfaces of the fore feet are 
clothed with short white hairs; the nails rather small, and white. 
The hind-feet, including the tarsus, are very long, much longer rela- 
tively than the same parts in H. longicaudatus, or indeed than in 
any other species with which it has been compared. They are spa- 
ringly covered with short hairs of a silvery-white colour, tinged with 
dusky on the middle of the foot, but near the claws very white. 
The: tail tapers evenly to a very fine point, and is finely annulated 
with small scales, and suffused with fine short hairs, much as in the 
Common Mouse, Mus musculus. It is of a dark grey-brown colour, 
a little paler beneath 
On all parts the fur is very long, fine, and glossy, as long as or even 
longer than that of H. longicaudatus or H. renggeri, and it almost 
conceals the ears, giving the creature the appearance of an Arvicola. 
