OSTEOLOGY AND DENTITION OF HYLOMYS. 455 
rather short, and is bare downwards from the middle of the tibia and fibula, being only 
sparsely covered with short hairs, as in the corresponding part of the fore limb. The 
whole under surface of the heel, however, has a covering of short, somewhat rigid, 
dark brown hairs, directed backwards; but the sole is quite naked, and has tubercles 
distributed over it as on the palm, and over the toes as on the fingers. The claws are 
more curved than those of the fingers. 
The tail is mouse-like, short, only one sixth the length of the trunk and head; it is 
almost nude, having only a sparse covering of short brown hairs, as on the tail of a rat, 
and the skin is thrown into little eminences, which are arranged in an annular manner. 
Above the root of the tail (dorsal aspect) there is a rather large surface, which is all 
but bare, having only a few minute hairs. This surface is covered with a brownish 
substance, probably an exudation from the skin; it is continuous with a similar but 
tumid surface surrounding the anus, and reaching forwards to the genitalia. Imme- 
diately before the anus, and in the female occupying the narrow interval between 
the opening of the vagina and anus, there are two nipple-like structures side by side, 
with a slight eminence before them and an obscure rounded eminence between and 
behind them. Each of the nipple-like bodies has an apical pore, with a fine bristle 
protruding from it. From the external margin of the vaginal surface a faint fold or 
linear eminence passes backwards to the root of the tail, where it is continuous with 
another slight fold that runs over the base of that organ. The former bears from four 
to six pores in a longitudinal series. I can observe only one pair of inguinal, and one 
pair of thoracic mamme. 
Length from tip of snout to vent 4 inches 11 lines; vent to tip of tail 11 lines. 
Anterior angle of eye to tip of snout 10 lines; posterior angle of eye to anterior margin 
of ear 6 lines; greatest length of ear 7 lines; greatest breadth of ear 7 lines; length of 
fore foot 8 lines; length of hind foot 1 inch. 
The general colour above is rusty brown, and on the underparts a pale yellowish 
white, the seminude portions of the limbs and tail being brownish yellow. The fur 
consists of three kinds of hairs:—Ist, a very delicate fine hair, the basal half of which 
is either succeeded by blackish or yellowish tipped with black; 2nd, stronger erect 
hairs, their dark basal halves succeeded by a broad rufous yellow band, which may be 
either terminal or tipped with black; and 3rd, a still stronger kind of almost bristly 
hair, with the terminal halves wholly black. The fur of the under surface is much 
shorter than that of the back and sides, and is mouse-coloured in its basal half, termi- 
nating in pale yellowish white. . 
The whiskers are black, and not very long. 
The skull (figs. 2, 3, & 4) differs from that of Tupaia in being less tapered both 
anteriorly and posteriorly, but more especially in the latter direction. The facial 
portion (snout) of the skull, although long, is not so attenuated as in Tupaia; and 
the nasal bones are not so much arched downwards as in the species of that genus, 
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