Ou a Collection of Mammals from Central and Northern Queensland. 839 



The orbital crest is formed as in M. greyi, and is similarly bent 

 outwards on the crown. 



The greatest width between the crests is equal to the greatest 

 height of the skull (just above the auditory bulla). 



The OS interparietale is short and broad (greatest length 8 mm, 

 breadth 4 mm), with the lateral angles obtuse. — The buUae osseae 

 are very small, their greatest length barely 7 mm, and is thus con- 

 tained in the length of the skull 6,14 times; they are considerably 

 shorter than the length of the orbital margin from the nasalia to the 

 anterior angle of the parietale (12 mm). 



The nasalia, which are strongly depressed along the middle, are 

 long, and extend forwards beyond the roots of the incisors. 



The foramina incisiva do not extend backwards beyond the front 

 margin of m ^. 



The dentition is: i|m| (16). 



The crowns of the molars are much worn, deeply concave, and 

 supplied in the centre with crescent shaped or elliptical rings of 

 enamel. — In the upper jaw m^ has two such rings, m^ has one, 

 and m ^ only exhibits a slightly elevated point in the centre. In the 

 lower jaw all the teeth have a Single oval or slightly curved ring in 

 the centre. 



Length of dental series: upper jaw 7 mm, lower jaw 7 mm. 



4. Mus Tnusculus Lin. 1766. 

 Mus tnusculus Lin. Syst. Nat. ed. XII, p. 83 (1766). 



A. Coomooboolaroo, Jan. 1884 (skin with skull). 



B. Rockhampton, Nov. 1883 (preserved in spirit). 



The first specimen, of which the skin and skull are before me, 

 belongs to one of the pale varieties of M. Musculus^ the colouring 

 of which dififers considerably from the normal hue of the European 

 species. 



The entire upper surface is greatly mixed with reddish brown 

 hairs, the feet are reddish grey, the under surface almost white. (The 

 tail is broken at the tip.) 



The Identification of this specimen is due to Mr. Oldfield 

 Thomas. 



