718 MONOGRAPHS OF NORTH AMERICAN RODENTIA. 



Var. LUDOVICIANUS. 

 Western Fox Squirrel. 



Sciurut ludoririanus Custis, Barton's Med. and Phys. Joiirn. ii, 1800, 4'.! (from Red River of " Louisiana"). — 

 Harlan, Faun. Amer. 1825, 186.— H. Smith, Griffith's Cuvier's An. King, v, 1827, 254.— Les- 

 son, Man. de Mam. 1827, 234.— Fischer, Synop. Main. 1829, :if>l.— Baird, Mam. N. Am. ia57, 

 251.—! Tomes, Proc. Zool. Soc. Lond. 1861, 281 (Costa Rica).— Hayden, Trans. Am. Phil. Soc. 

 Phila. xii, 1803, 144.— Allen, Proc. Bost. Soc. Nat. Hist, xiii, 18(39, 188. 



Sciurus hidovicianua var. alroivntris Engelmann, Trans. Acad. Sci. St. Louis, i, 1859, 329 (melanistic). 



Sciurus cincrcus var. liidovivianus Allen, Proc. Bost. Soc. Nat. Hist, xvi, 1874, 287. 



Macroxus ludoricianus Gray, Ann. aud Mag. Nat. Hist. 3d ser. xx, 1867, 426. 



Sciurus rufiventer " GEOFFROY, Mub. Par."; Nouv. Diet. d'Hist. Nat. x, 103.— Desmarest, Mam. ii, 1822, 

 332.— Harlan, Faun. Amer. 1825, 176 (New Orleans).— Lesson, Man. de Mam. 1827, 233.— 

 Fischer, Synop. Mam. 1829, 351.— Schinz, Synop. Mam. ii, 1845,6 (specimen from Mis- 

 souri). — Maximilian, Wiegm. Arch. f. Naturg. 1861, 70. 



Sciurus macroura Say, Long's Exped. R. Mts. i, 1823, 115 (Kansas). 



Sciurus maerourut Doughty, Cab. Nat. Hist, i, 1830, 265, pi. xxiii.— " F. Cuvier, Suppl. Buffon's Hist. Nat. 

 i, Mam. 1831, 297." 



Sciurus macroureus Godman, Am. Nat. Hist, ii, 1826, 134— Woodhouse, Sitgreavos's Col. and Zuni Riv- 

 ers, 1853, 53. 



Sciurus magnicaudatus Harlan, Faun Amer. 1825, 178.— H. Smith, Griffith's Cuvier's An. King. 1827, 255. — 

 Lesson, Man. de Mam. 1827, 235.— Fischer, Synop. Mam. 1829, 351.— Bachman, Proc. Zool. 

 Soc. Lond. 1838,88; Charlesworth's Mag. Nat. Hist, iii, 1839, 156; Silliman's Am. Journ. 

 Sci. and Arts, xxxvii, 1839, 296.— Wagner, Suppl. Schreber's Siiuget. iii, 1843, 166.— Schinz, 

 Synop. Mam. ii, 1845, 11.— Kennicott, U. S. Pat. Off. Rep. Agr. 1856 (1857), 56, pi. vi. 



Sciurus subauratus Bachman, Proc. Zool. Soc. Lond. 1838, 87; Charlesworth's Mag. Nat. Hist, iii, 1839, 

 155; Silliman's Am. Journ. Sci. and Arts, xxxvii, 1839, 295. — Wagner, Suppl. Schreber's 

 Siiuget. iii, 1843, 164.— Audubon & Bachman, Quad. N. Am. ii, 1851, 67, lviii. 



Sciurus auduboni Bachman, Proc. Zi 51. Soc. Lond. vi, 1838, 97 (Louisiana ; dusky variety) ; Charlesworth's 

 Mag. Nat. Hist, iii, 1839, 378.— Wagner, Suppl. Schreber's Siiuget. iii, 1843, 182.— Schinz, 

 Synop. Mam. ii, 1845, 12.— Audubon & Bachman, Quad. N. Am. iii, 1854, 26Q, pi. clii, fig. 2. 



Sciurus occidetitalis Audubon & Bachman, Journ. Acad. Nat. Sci. Phila. viii, 1842, 317. 



Sciurus rubicaudatus Audubon & Bachman, Quad. N. Am. ii, 1851, 30, pi. lv. 



Sciurus sayi Audubon & Bachman, Quad. N. Am. ii, 1851, 274, pi. lxxxix. 



Sciurus limitis Baird, Proc. Acad. Nat. Sci. Phila. vii, 1855, 331 ; Mam. N. Am. 1857, 256 (Texas ; immature). 



Var. cinereus. 

 Northern Fox Squirrel. 



Varietal chars. — Length of body 12 to 13 inches, varying from 11 to 14 

 or more ; tail-vertebra? about 10, varying from 9 to 11 ; tail to end of hairs 12, 

 varying from 1 1 to 14. Color variable, but with the nose and ears generally con- 

 color with the dorsal surface Commonly whitish-gray above, yellowish-white 

 below, with the edges and under surface of the tail fulvous, varying to rufous. 

 Often with a fulvous or rufous cast above, and strongly fulvous or rufous 

 below. Varies to dusky above, with the ventral surface, legs, and feet 

 blackish or black. Maryland and Virginia specimens are rather larger, 

 grading into var. niger, with generally the tail more ferruginous. 



Of this variety, called by them the Cat Squirrel, Audubon and Bachman 



