lowish grizelled, with longer black hairs; sides
yellowish grey, beneath grey lead colour, under fur lead colour; ears
with scattered short adpressed hairs; whiskers black; front teeth yellow;
tail with short black adpressed bristles; length of body and head 7, tail
4, hind-feet 1 1-4 inches. The water-rat of the South Australian
Colonist. Inhabits South Australia, River Torrens, Bass Strait, New South
Wales; Musquito Islands and Macdonald's River, Van Diemen's Land,
Tasman's Peninsula. J. Gould, Esquire.

Number 85. Mus greyii, Gray.

Fur brown, with close long slender pale-tipped black hairs; sides
yellowish-brown; throat and beneath yellowish; feet whiteish; ears nearly
naked, with close-pressed short greyish hairs; tail with close-pressed
brown hairs. Variety; belly rather more greyish-white. Inhabits South
Australia, June. Length, body and head 6, tail 4 3/4, hind-feet 1 1/12 of
an inch.

Number 86. Mus adelaidensis.

Fur soft, brown, with scattered rather longer black tipped hairs, beneath
pale grey brown; the under fur lead coloured; whiskers black; ears
moderate, covered with short close-pressed hairs; tail elongate, brown;
cutting teeth pale yellow, compressed; body and head 3, tail 3 inches,
hind-feet 8-12. Inhabits South Australia. J. Gould, Esquire.

In examining the Geographical distribution of the Genera, as exhibited in
the foregoing table, as far as our present knowledge of these animals
extends we may state that the genera Choeropus, Acrobates, Petaurista,
Lagorchestes, Phascolarctos, Hapalotis, and Pseudomys, are peculiar to
New South Wales. The genus Petaurus is also found in New South Wales, but
not in the Island of Van Diemen's Land and the rest of the continent, but
one of the species living there is also said to be an inhabitant of
Norfolk Island, where it may probably have been introduced.

The species of the genera Petrogale and Bettongia are common to New South
Wales, South Australia, and the North-west Coast; but they are not found
in Van Diemen's Land, and the genus Myrmecobius appears to be peculiar to
Western Australia, for it is not by any means certain that the red
shrew-mouse discovered in Australia Felix by Sir T. Mitchell belongs to
this genus.

The Genera Thylacinus, Diabolus, and Dromicia, are peculiar to Van
Diemen's Land.

The species of the genera Dasyurus and Perameles are very abundant in Van
Diemen's Land, but they have also representatives which are found in New
Holl