740 OLDFIELD THOMAS. 



Head and body 91 mm.; tail 102; hindfoot 21.3; ear. 16. 



Skull, greatest length 26.5; basai length 23.7; zygomatic breadth 14.7; interorbital 

 breadth 4.5; maxillary tooth-row 10; three anterior molariform teeth 5.1. 



Hab. Aru Islands. 



Type. Adult female in spirit. B. M. N°. 22. 2. 2. j6. Original number XX. 



The genus to which this animal belongs has not.been hitherto recorded from the Aru 

 Islands, but there is no spécial reason it should not occur there, as in Australia it ranges 

 quite to the north, both in Queensland and in the Northern Territory. As a species 5. rufi- 

 <renis is very distinct, its red cheeks separating it at once from ail other forms except 5. vir- 

 giniœ, which is a far larger animal. 



