426 Zoological Society. 



Hub. Open plains, Darling Downs, New South Wales. 



Fur long and very soft ; the hairs of the back of a deep slate- grey, 

 M'ith the exposed portion of a dirty yellowish hue, and the points 

 black; long interspersed black pointed hairs are abundant on the 

 l>ack, and give a deep general tint to that part ; sides of the body 

 greyish yellow, under parts grey-white, faintly suffused with yel- 

 lowish ; the hairs on these parts of a deepish grey, excepting at the 

 point ; hairs of the moustaches rather small and black ; eye encircled 

 with black ; ears of moderate size and well- covered with minute hairs ; 

 those on the outer side black, excepting on the hinder part, where 

 they assume a greyish white tint, like those on the inner side of the 

 ear ; feet rather small and white ; the fore-ones greyish at the WTist, 

 and the tarsi indistinctly suffused with yellowish ; tail about equal 

 in length to the head and body, well-clothed with smallish hairs, 

 which do not perfectly hide the scales ; those on the upper surface 

 chiefly brownish black, slightly pencilled with whitish m parts ; on 

 the sides and under part white. 



Mus GRACiLiCAUDATUs. M, vellere longo molli cinerascenti-fusco ; 

 cbrpore subtHs alba, indistinct^ flavo-lavato ; miribus parvulis pilis 

 obscuris plerumque obsitis ; pedibus sordid^ albis ; cauddfusco- 

 nigrd, subtiis sordide albd. 



Bnc. lin. 

 Longitude ab apice rostri ad caudae basin. ... 5 



caudfE 3 5 



ab apice rostri ad basin auris .... 1 2^ 



auris , 5 



tarsi digitorumque 1 1 



Hab. Oakley Creek, Darling Downs, east coast of Australia. 

 This species greatly resembles the Mus lineolatus, but differs in 

 having the ears smaller, and clothed internally with dusky hairs in- 

 stead of white ; the incisor teeth rather broader ; the tarsi smaller ; 

 the fore-feet much smaller; the tail more sparingly clothed with 

 hairs, which are of a less pure white on the under side, and the darker 

 hairs of the upper surface extending somewhat on to the sides of 

 the tail, and in not presenting that strongly-marked line of separa- 

 tion between the colouring of the upper and under surface. The fur 

 is rather less soft, less tinted with yellow on the upper parts, and 

 more so on the sides of the body. 



Mus ALBociNEREus. M. vellerc longo permolli, pallid"^ cinereo, in 

 dorsum pallide fusco tincto ; corpore subtus, caudd, pedibusque 

 albis ; caudd suprct indistincfk nigro penicillatd ; auribus medio- 

 cribus pilis albescentibus vestitis. 



unc. lin. 



Ix)ngitudo ab apice rostri ad caudse basin. ... 3 9 



» Cauda 3 6 



^ ab apice rostri ad basin auris .... 1 l^ 



auris 5^ 



• tarsi digitorumque 10 



Hab. Moore's River, in the interior of Western Australia. 

 This mouse is rather larger than the Mus musculus, and consider- 

 ably stouter in proportion ; has the head large, the ears moderate ; 



