108 MUS. 
Note.—Gould (l.c.) gives Mus greyi, Gray, in Grey’s Travels in 
Australia (App. ii. p. 410, 1841), as a synonym of Mus gouldi ; 
this, however, appears to be an error, Gray’s species being, 
according to Thomas and Collett, valid. 
12. Mus oreyi, Gray (1841). 
Grey’s Rat. 
General color above intense reddish-brown, interspersed with 
long, slender, pale tipped, black hairs ; sides yellowish-brown ; 
lower surfaces yellowish ; feet reddish-brown ; ears nearly naked, 
with short grayish hairs ; tail brown, much shorter than the head 
and body. 
Dimensions.—Head and body to six inches; tail to four and 
three-fourths inches. 
Habitat.—From South Australia to North-eastern Queensland. 
feferences.— Waterhouse, Voy. Beagle, i. p. 67, pl. xxxiv. fig. 
18 (molars); Gould, Mamm. Austr. iii. pl. xix. 
feferences.—Gray, Grey’s Trav. Austr. App. ii. p. 410; Collett, 
Zool. Jahr. ii. 1886-7, p. 837. 
Note.—Prof. Collett observes that this species ‘“ takes the 
place in houses of Mus decumanus” in the Herbert River 
District. 
13. Mus nanus, Gould (1857). 
Little Rat. 
Fur coarse. General color above and the outer sides of the 
limbs brown, with numerous interspersed fine black hairs ; below 
grayish-white, becoming lighter and forming a conspicuous patch 
beneath the tail ; feet light brown ; base of the fur bluish-gray ; 
tail brown, shorter than the head and body. 
Dimensions.—Head and body to four inches ; tail to three and 
a fourth inches. 
Habitat.—West Australia. 
Reference.—Gould, Mamm. Austr. ili. pl. xx. 
14. Mus ALBocInEREUS, Gould (1845). 
Grayish-white Mouse. 
Habit rather stout ; ears moderate ; tail nearly equal in length 
to the head and body ; tarsi very slender ; fur very long and 
soft. General color pale ashy-gray, with a slight brownish tint 
on the hinder part of the back ; below white with a faint grayish 
tinge ; head grayish-white, pencilled with black ; feet and tail 
white, the latter with scattered black hairs above. 
