160 NORTHERN ZOOLOGY. 
they are blackish at the roots, then yellowish-brown for a short space, then brownish-black 
for more than half their length ; and, lastly, tipped with pale brownish-white. 
Extremities—There is a tuft of four or five longer hairs on the posterior part of the 
fore-leg. The toes are well separated, and are covered above with short adpressed hairs. 
They are naked beneath, and have a callous enlargement at the roots of the claws. The 
palms are also naked, and have similar callous eminences to those mentioned in the 
description of A. Richardsonii. The very small thumb is protected and almost entirely 
covered by a short, convex, rounded nail, and is situated onthe inner side of a large 
tubercle at the posterior part of the palm. The toes and claws have the same relative 
length to each other as those of the A. Richardsonii, but the claws are larger in proportion. 
The hind-feet are also similar in form to those of the animal just-mentioned. About half 
an inch of the sole, next the heel, is well clothed with hair, the remainder is naked. 
DIMENSIONS. 
Inches. Lines. Inches. Lines. 
Length of head and bod : 12 to 14 0 Length of the palm and middle fore-toe . 1 4 
> Ss head ‘ ‘ ° 0 3 the middle fore-claw . - 0 7 
» tail (vertebrz) ane 3 0 55 from heel to point of middle hind- 
9 tailincluding fur. . 4 6 claw . ‘ we + 2 2 
5» from the orbit to end of the nose 1 0 55 the middle hind-claw . + 0 4 
9 orbit . ’ 0 5 
