Mai'idit from Cratral Aastralia. 125 



.Skull. 



Greatest lengtli - . . ? 36-5 



Basal length ? 31-0 



Greatest breadth - - - - 20 8 



Nasals, length - - - - - 12-2 



Nasals, greatest breadth - - - 3-8 



Interorbital breadth - - - 5"0 



Interparietal length - - - - 4-9 



Interparietal breadth - - - 9"7 



Brain-case, breadth - - - - ? 160 



Anterior zygoma root - - - 4-6 



Diastema - - - - - 10 "8 



Palate, length - - - - - 19-8 



Anterior palatina foramina - - 6-9 



Upper molars, lengtli - - - 7"1 



Lower molars, length - - - 7"0 



Condyle to incisor tip - - - 25-9 



Coronoid tip to angle - - - 13-0 



Mus villosissimus, nom. nov. 



Mi/s loiigipi/is. Gould, Mamm. Aust., III., 1863, pi. 13. 



Not Waterhouse, Proc. Zcol. 8oc., 1837, p. 16. 



It is gratifying to find that this rat has again been obtained ; 

 the type, preserved in the Australian Museum, is somewhat 

 faded ; advantage has therefore been taken of fresh examples, 

 wherefrom to supplement the original description. 



In consecpience of the preoccupation of the original name as 

 above indicated, it has been necessai-y to redesignate the species ; 

 and in selecting the name, M7ts vi7/osissi///?/s, I have endeavoured 

 to preserve the reference to the most striking feature presented 

 by the species. 



Fur, long, close, harsh, generally of a sandy color but 

 apparently darker owing to the numei'ous black hairs which 

 are mostly just tipped with white : the color at the base ttf 

 the upper hairs is dark grey, that of the lower surface somewhat 

 lighter. The feet are white haii'ed, the tail is not so long as 

 the head and body together, and the hairs are short, black and 

 stiff: scales average ten to the centimetre. Mammte, 2'3 = 10. 

 Two examples have been received, one of each sex. 



