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SCIURUS MIGRATORIUS .— Aud. a.nd Bach. 



Migratory Gray SauiRREL. — Northern Gray Squirrel. 

 PLATE XXXV. Male, Female, and Yoong. Natural size. 



S. S. Caroliiiense robustior, S. cinereo minor ; cauda corporc mullo 

 longiore ; variis coloribus. 



characters. 



Larger than the Carolina gray squirrel; smaller than llie caL-squirrel ; 

 tail, much longer than the body ; subject to many varieties of colour. 



SYNONTMES. 



Gray Squirrel, Pennant, Arct. Zool., vol. i., p. 185, Hist. Quad., No. 273. 

 SciBRDs CiNEREUs, Harlan, Fauna, p. 173. 



" Carolinensis, Godman, non Gmel. 



" Leccotis, Gapper, Zool. Journ., London, to!, v., p. 206, (published about 1830.) 



" " Bach., Proceedings of the Zoological Society, p. 91, London, 1838. 



Common, or Little Gray Squirrel, Emmons, Report, 1842, p. 66. 

 SciuRus Leccotis, Dekay, Nat. Hist. N. Y., p. 57. 



" VuLPINUs, do. do. do. p. 59. 



DESCRIPTION. 



This Squirrel seems to have permanently twenty-two teeth. A large 

 number of specimens procured at different seasons of the year, some of 

 which from the manner in which their teeth were w^om appeared to be 

 old animals, presented the small front molars in the upper jaw. Even 

 in an old male, obtained in December, with tufted ears, (the measure- 

 ments of which will be given in this article,) the small molar existed. 

 This permanency in teeth that have been usually regarded as deciduous, 

 would seem to require an enlargement of the characters given to this 

 genus ; it will moreover be seen that several of our species are similar to 

 this in their dental arrangement. 



Incisors, strong, and compressed, a little smaller than those of the 

 cat-squirrel, convex, and of a deep orange colour anteriorly. The upper 



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