320 APPENDIX. 



shoulder, and terminating abruptly on the flanks ; it is about two 



inches in length, and four lines wide. 



Length of head and body, 6 inches 2 lines. 

 " tail (vertebra?,) 3 " 6 " 



" " including fur, 5 " 

 " ears posteriorly, 3 " 



" " including fur, 5 " 



" sole and middle hind claw, 9 " " 



Downy Squirrel. 



Scivrus lanuginosvs, (Bach.) Journal Acad. Nat. Sciences, 

 vol. 8, part I. 



" A singular and beautiful little quadruped, to which I have 

 conceived the above name appropriate, was sent to me with the 

 collection of Mr. Townsend. 



The head is broader than the S. hudsonicus, and the forehead 

 much arched ; the ears short and oval ; whiskers longer than 

 the head ; feet and toes short, thumb armed with a broad, flat 

 nail ; nails slender, compressed, and acute ; the third on the fore 

 feet is the longest, as in the squirrels. The tail, which bears 

 some resemblance to that of the flying squirrel, is composed of 

 hairs a little coarser than those of the back, and much shorter 

 than the body. On the fore feet the palms are nearly naked; 

 the under surface of the toes being only partially covered with 

 hair, but on the hind feet, the under surface, from the heel even 

 to the extremity of the nails is thickly clothed with short soft hairs. 



The fur is softer and more downy than that of any other of 

 our species, and the whole covering of the animal indicates it 

 to be a native of a cold region. 



The teeth are dark orange ; whiskers brown ; the fur oh the 

 back, from the roots to near the extremities, light plumbeous, 

 tipped with light chestnut-brown ; on the sides with silver gray ; 

 there is a broad band of white around the eyes ; a spot of white 

 on the hind part of the head, a little in advance of the anterior 

 portion of the ears. The nose is white, which color extends 

 along the forehead till above the eyes, where it is gradually 

 blended with the colors on the back. The whole of the under 

 surface, including the feet and the inner surface of the legs, pure 



