Wolffsohn. — DESCRIPTION OF A NEW RODENT 
7 
breast an irregular pale cinnamon coloured patch. Tail densely 
covered with shorter hairs of the same general colour as body, 
without slaty grey base, under side of tail fur dirty white. Upper 
surface of hands and feet covered with purewhite hairs, not dirty 
white as in A. Bennettii, under surface bare with same granular 
tubercles. Ears, measured from notch at base to tip, of the 
same size as in A. Bennettii, are in reality much larger, as the 
lower lobe reaches far below the notch. Also much broader, 
same breadth as length, roughly semicircular in shape. 
The type specimen being intended for Mr. Oldfield Thomas, 
I have resisted the temptation of cleaning the skull, in which 
he may find differences from that of A. Bennettii, though the 
molars of upper and lower jaw have the same appearance and 
size as those of that species. Outer surface of incisors much 
paler yellow than in A. Bennettii. 
Dimensions of type, measured in the flesh: 
Head and body 195 mm.; tail 133; hind foot 32; ear 30. 
Hub. Vallenar, Alt. 600 m. 
Type, adult male. Original number 535. 
