Co/or. Ears never white, but nose sometimes of that hue; above 

 mixed black and rusty; beneath pale ferruginous or rusty white; ears 

 and tail beneath ferruginous. 



Measurements. Total length, about 587; tail vertebra;, 271; hind 

 foot, 73. 



h.—limitis. {Sdiirus), Baird, Proc. Acad. Nat. Scien. Phil., 1855, 



P- 331- 



Type locality. Devil's River, Texas. 



Geogr. Distr. Texas, southward into Mexico. 



Gent. Char. Smaller than .S'. carolinensis : hairs short and close 

 pressed. Upper molars four. Feet small. 



Color. Upper parts mixed cinnamon and black; sides of head, 

 limbs and under parts, light cinnamon brown; feet above tinged with 

 rusty; tail above similar to back but more yellowish, beneath uniform 

 cinnamon darker than belly. The color of ventral surface varies 

 from pure white to deep orange among individuals. 



Measurements. Total length, 532; tail to end of hairs, 280; hind 

 foot, 64.5. 



B. Neosciurus, Trouess. 



Premolars, ^^. Skull lengthened; rostrum long, compressed; 

 nasals cjuite long, not extending to posterior end of premaxillaries 

 and narrowed posteriorly; zygomata ascending obliquely, the process 

 of the squamosal abruptly descending. Cranium generally length- 

 ened and narrow. Molar series moderately heavy. 



73. carolinensis. (.Sciurus), Gmel. Syst. Nat., i, 1788, p. 148. 



Ty/>e locality. Carolina. 



Geoi^r. Distr. Eastern United States from southern New York 

 to northern Florida, and westward south of Pennsylvania to Missouri, 

 Indian Territory and to edge of the plains. 



Gen/. Char. Medium; colors constant dark yellowish rusty 

 above, white below; pelage soft. 



Color. Above dark yellowish rusty; hairs of tail yellow at base, 

 then black, and tips white; under parts white; ear yellowish white. 



Measurements. Total length above, 450; tail vertebra', 212; hind 

 foot, 60.8. 



a.—leucotis. (.Sciurus), Gapper, Zool. Journ., 1830, v, p. 206. 

 cinereus. Schreb. Siiugth., 1792, iv, p. 766, pi. ccxcii. 

 pennsylvaniius and hiemalis. O'cd, Guth. Geog., 2nd Am. ed., 1815, 



II, p. 292. 

 niger, Godman, (nee Linn.). .\m. Nat. Hist., 1826, 11, p. 133. 

 vulpinus, DeKay, N. Y. Zool., 1842, i, p. 59, (nee Gmel., nee 

 Schreb). 



