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SCIURUS EUBICAUDATUS.—Aud. and Bach. 
Red-Tailed SauiRKEL. 
PLATE L V. Natural Size. 
S. supra sub rufus canomistus, subtus sordide flavus, magnitudine inter 
s. cinereum et s. migratorium ; cauda auriculisque rufis. 
CHARACTERS. 
Intermediate in size between the cat squirrel {S. Cinereus) and the North- 
ern gray squirrel {S. Migratorius) ; ears and tail, red ; body, light-brown 
mixed with gray above, soiled buff beneath. 
DESCRIPTION. 
In form this species resembles the northern gray squirrel, possessing 
evidently all its activity ; its proportions are more delicate, and it weighs 
less, than the cat squirrel. It is considerably smaller than the great-tailed 
squirrel of Say, (<S. Sayi). Although a little larger than the northern gray 
squirrel, its tail is shorter, and its fur a little coarser. The only specimen 
in which we were enabled to examine the dentition, had but twenty teeth ; 
the small front molars which appear to be permanent in the northern gray 
squirrel, and deciduous in several other species, were here entirely wanting. 
COLOUR. 
The fur on the back is in half its length from the roots, plumbeous, suc- 
ceeded by a narrow marking of light brown, then black, tipped with 
whitish, a few interspersed hairs are black at the apical portion ; on the 
under surface the hairs are yellowish-white at the roots, and reddish-buff 
at the tips. The long hairs on the under .surface of the tail are red through 
theii whole extent. On the upper surface of the tail the hairs are reddish 
with three black annulations, tipped with red. Moustaches, black ; ears, 
around the eye, sides of face, throat and neck, inner surface of legs, upper 
surface of feet and belly, dull buff ; tail, rufous. 
