In. Lines. 6 0
4 9
1 3 |
Lengtli of tarsus (claws included)
of ear . . .
Lines.
27
Length from nose to root of tail
of tail
from nose to ear
Habitat, Chatham Island, Galapagos Archipelago, Pacific Ocean, (October.)
This species is less than 3Ius Rattus. The upper parts of the body have a
slightly variegated appearance.
The skull of 3Ius Galapagoensis (Plate 33, fig. 8, a,) is rather smaller than
that of 31. Rattus, the nasal portion is proportionately longer, the cranial
shorter, and the interparietal bone is smaller, especially in antero-posterior
extent; its length is 15 lines, and its breadth is 84 lines. The lower jaw is
figured in Plate 34, fig. 14, a. Fig. 8, b, of Plate 33, represents the molars of the
upper jaw, and fig. 8, c, those of the lower jaw.
“ This mouse or rat is abundant in Chatham Island, one of the Galapagos
Archipelago. I could not find it on any other island of the group. It frequents
the bushes, which sparingly cover the rugged streams of basaltic lava, near the
coast, where there is no fresh water, and where the land is extremely sterile.”—D.
2 7. M us F u s c ip e s .
P l a t e X X V .
31. suprà fusco-nigrescens, subtus griseus ; pedibus fuscis ; aurihus mediocribus,
caudâ, quoad longitudinem, caput corpusque fere oequante: vellere longissimo, molli.
D e s c r ip t io n .— Form stout ; ears moderate ; tail equal to the body in length ;
tarsi moderate; fur very long. General tint of the upper part and sides of
the head and body blackish brown with an admixture of gray ; of the under
parts grayish white ; feet brown, the hairs grayish at the tip : tail black and
but sparingly clothed with short bristly hairs : ears rather sparingly clothed
with hairs, which are for the most part of a brownish gray colour. The ordinary
fur of the back is about | of an inch in length and very soft—of a deep
gray colour, broadly annulated with brownish yellow near the tip and blackish
at the tip ; the longer hairs which are black, measure upwards .of 1-]; inches
in length. The upper incisors are of an orange colour and the lower are
black.
In. Lines.
Length from nose to root of tail
of tail
from nose to ear
Length of ear .
of tarsus (claws included)
In. Lines. 0 C4
1 1
Habitat, Australia, King George’s Sound, (3Iarch.)