Geogr. Distr. Virginia to Florida east of the AUeghanies, and 

 Gulf coast to Louisiana. 



Genl. Char. Large; color variable; nose and ears white. Pelage 

 harsh. 



Color. Varying from glossy black to clay color mingled with 

 black above, clay color below. Tail mixed black and clay color. 

 Nose and ears always white. Top of head usually black. 



Measurements. Total length, 638.46; tail vertebrfe, 304.13; hind 

 foot, 87.81. 



72. ludovicianus. {.Saun/s), Custis, Bart. Med. Phys. Jour., 11, 1806, 



P- 43- 

 rufiventer, Desm. Mamm., 11, 1822, p. 332. (New Orleans). 

 macroura, Say, Long's Expedition Rocky Mountains, i, 1823, p. 

 115. (Kansas). 



magnicaudaius, Harlan, Faun. Am., 1825, p. 178. 



subauratus, Bachm. Proc. Zool. Soc, 1838, p. 87. 



audiiboni, Bachm. Proc. Zool. Soc, 1838, p. 97. 



occidentalis, Aud. & Bachm. Journ. Acad. Nat. Sci. Phila., 1842, 



P- 317- 



rubricauda/iis, \\i<l. & Bachm. Quad. N. Am., 11, 1851. p. 30, 

 pi. Iv. 



sayi, Aud. & Bachm. Quad. N. Am., 11, 1851, p. 274, pi. l.xxxix. 



Type locality. Red River of Louisiana. 



Geogr. Distr. Mississippi Valley from Louisiana to South 

 Dakota and Michigan, and from Western AUeghanies to eastern 

 border of plains. 



Genl. Char. Smaller than .S. niger; ears and nose never white; 

 colors variable: winter pelage soft, ears tufted. 



Color. Above, whollj' black, to a mixed black and rufous; under- 

 parts bright ferruginous; deepest on upper surface of feet and lower 

 surface of tail. 



Measurements. Average total length, 541.5; tail vertebra'. 252; 

 hind feet, 73.7. 



a. — vicinus. (Sciurus), Bangs, Proc. Biol. Soc. Wash., i8g6, p. 150. 



cinereus, Le Conte, App. McMurt. Cuv., 1831, p. 433. 



vulpinus, Schreb. Saugth., iv, 1792, p. 772. (nee. Gmel). 



Type locality. White Sulphur Springs, West Virginia. 



Geogr. Distr. Formerly from northern Virginia to southern New 

 England; now from mountains of W^est Virginia northward into west- 

 ern Pennsylvania. 



Genl. Char. Size larger than S. ludovicianus; less ferruginous; 

 belly usually white; tail beneath ferruginous. 



