- 
263 
the two as distinct ; and after the examination of a large number of 
specimens undoubtedly referable to H. renggeri, and comparison of 
these with M. Pictet’s figure and description, I have arrived at the 
same conclusion. The species now under notice may be seen in col- 
lections with the name of H. arvicoloides attached; and, as it accords 
well with the figure and description of that species (and is certainly 
distinct from H. renggeri), I shall for the present adopt that name. 
13. HESPEROMYS CALIGINOSUS, 0. S. 
The present remarkable looking species takes its place under the 
division of the genus which I have in my former ‘ Notes’ proposed 
for the reception of two new species forwarded by Mr. Fraser, and 
which I have called H. latimanus and H. bicolor. Agreeing with 
these species in the more essential points of structure, it yet differs 
from them in the shortness of the tail, and in the kind of fur. 
Head and face short, much as in the Arvicolide ; eyes small and 
concealed in the fur; muffle very small, and without prominences 
beneath the nostrils ; ears small, ovoid, and naked. Fore feet short 
and moderately broad, with the toes naked, and the claws short and 
rather stout ; hind feet short and moderately broad, with the claws 
rather strong, and the toes nearly naked on their upper surface, the 
tarsus even being only sparingly sprinkled with short hairs. Tail 
about as long as the body, exclusive of the head, sparingly clothed 
with very short and stout hairs. All the naked parts nearly black, 
claws pale brown. Whiskers few and short. 
The general colour of the fur may be described as black, thickly 
powdered with darkish chestnut, with a greater mixture of the latter 
colour beneath than above; on the abdomen slightly tinged with 
greyish. Each hair is blackish grey at the root, and tipped with chest- 
nut; but there is an unusual number of rather longer.black hairs 
mixed with these, which gives the species the appearance of black, 
finely dotted with rufous. 
The skull of this species has the same conformation as those of 
Hi, latimanus and H. bicolor. 
= 
= 
Length of the head and body............ 0 
Ol the tan ess oe cicheee «ails Hes steve 3 0 
Of GWG PREAG fae nS. Srieeace adele le) 08 0.0 oe 1 3 
of the ears, behind .............. 0 5 
froma TOse GLEYE « : (2). wie ais ets a 0 6 
from nose to ear......... is aa! She 1 0 
of fore foot and claws............ 0 6 
of hind foot and claws ...... Set seals 0 
Breadth of carjmMeamly: 605. .ci2 ewe sss ss 0 5 
across the middle of the tarsus.... 0 25 
Diameter of theiepes. oF e806). ee es Bone 
These dimensions, having been taken from a specimen preserved 
in spirits, are pretty accurate. 
