Mr.
Gunn remarks that H.billardieri is common in the locality indicated by M.Desmarest.
Number 67.

Petrogale brachyotis.
This species was discovered by Captain G.Grey, in his expedition, and the specimens he collected he gave to Mr.Gould, who described them, and is now about to figure them in his forthcoming monograph of the species of kangaroos: a work which will be as far superior to any other published on Mammalia in beauty of design and accuracy in the execution of the plates as his work on Birds has been to any that has hitherto appeared either in England or on the Continent.

The specimens are now in the collection of the British Museum.
Number 84.

Mus lutreola.
Back black and yellowish 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.